diff --git a/lighthouse-core/gather/computed/metrics/lantern-first-contentful-paint.js b/lighthouse-core/gather/computed/metrics/lantern-first-contentful-paint.js index fcec9ff7d281..1f6cc7f6edd7 100644 --- a/lighthouse-core/gather/computed/metrics/lantern-first-contentful-paint.js +++ b/lighthouse-core/gather/computed/metrics/lantern-first-contentful-paint.js @@ -20,8 +20,8 @@ class FirstContentfulPaint extends MetricArtifact { */ get COEFFICIENTS() { return { - intercept: 600, - optimistic: 0.6, + intercept: 0, + optimistic: 0.5, pessimistic: 0.5, }; } diff --git a/lighthouse-core/gather/computed/metrics/lantern-first-cpu-idle.js b/lighthouse-core/gather/computed/metrics/lantern-first-cpu-idle.js index a72b17750447..df89c1009e04 100644 --- a/lighthouse-core/gather/computed/metrics/lantern-first-cpu-idle.js +++ b/lighthouse-core/gather/computed/metrics/lantern-first-cpu-idle.js @@ -14,6 +14,18 @@ class LanternFirstCPUIdle extends LanternInteractive { return 'LanternFirstCPUIdle'; } + /** + * @return {LH.Gatherer.Simulation.MetricCoefficients} + */ + get COEFFICIENTS() { + return { + intercept: 0, + optimistic: 1, + pessimistic: 0, + }; + } + + /** * @param {LH.Gatherer.Simulation.Result} simulation * @param {Object} extras diff --git a/lighthouse-core/gather/computed/metrics/lantern-first-meaningful-paint.js b/lighthouse-core/gather/computed/metrics/lantern-first-meaningful-paint.js index ca0b0228d27b..9bbcbe262002 100644 --- a/lighthouse-core/gather/computed/metrics/lantern-first-meaningful-paint.js +++ b/lighthouse-core/gather/computed/metrics/lantern-first-meaningful-paint.js @@ -20,9 +20,9 @@ class FirstMeaningfulPaint extends MetricArtifact { */ get COEFFICIENTS() { return { - intercept: 900, - optimistic: 0.45, - pessimistic: 0.6, + intercept: 0, + optimistic: 0.5, + pessimistic: 0.5, }; } diff --git a/lighthouse-core/gather/computed/metrics/lantern-interactive.js b/lighthouse-core/gather/computed/metrics/lantern-interactive.js index de20e19fece7..b4789611d554 100644 --- a/lighthouse-core/gather/computed/metrics/lantern-interactive.js +++ b/lighthouse-core/gather/computed/metrics/lantern-interactive.js @@ -24,9 +24,9 @@ class Interactive extends MetricArtifact { */ get COEFFICIENTS() { return { - intercept: 1600, - optimistic: 0.6, - pessimistic: 0.45, + intercept: 0, + optimistic: 0.5, + pessimistic: 0.5, }; } diff --git a/lighthouse-core/lib/dependency-graph/simulator/dns-cache.js b/lighthouse-core/lib/dependency-graph/simulator/dns-cache.js new file mode 100644 index 000000000000..82dce0f9b9a0 --- /dev/null +++ b/lighthouse-core/lib/dependency-graph/simulator/dns-cache.js @@ -0,0 +1,83 @@ +/** + * @license Copyright 2018 Google Inc. All Rights Reserved. + * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 + * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. + */ +'use strict'; + +// A DNS lookup will usually take ~1-2 roundtrips of connection latency plus the extra DNS routing time. +// Example: https://www.webpagetest.org/result/180703_3A_e33ec79747c002ed4d7bcbfc81462203/1/details/#waterfall_view_step1 +// Example: https://www.webpagetest.org/result/180707_1M_89673eb633b5d98386de95dfcf9b33d5/1/details/#waterfall_view_step1 +// DNS is highly variable though, many times it's a little more than 1, but can easily be 4-5x RTT. +// We'll use 2 since it seems to give the most accurate results on average, but this can be tweaked. +const DNS_RESOLUTION_RTT_MULTIPLIER = 2; + +class DNSCache { + /** + * @param {{rtt: number}} options + */ + constructor(options) { + this._options = Object.assign( + { + rtt: undefined, + }, + options + ); + + if (!this._options.rtt) { + throw new Error('Cannot create DNS cache with no rtt'); + } + + this._rtt = this._options.rtt; + /** @type {Map} */ + this._resolvedDomainNames = new Map(); + } + + /** + * @param {LH.Artifacts.NetworkRequest} request + * @param {{requestedAt: number, shouldUpdateCache: boolean}=} options + * @return {number} + */ + getTimeUntilResolution(request, options) { + const {requestedAt = 0, shouldUpdateCache = false} = options || {}; + + const domain = request.parsedURL.host; + const cacheEntry = this._resolvedDomainNames.get(domain); + let timeUntilResolved = this._rtt * DNSCache.RTT_MULTIPLIER; + if (cacheEntry) { + const timeUntilCachedIsResolved = Math.max(cacheEntry.resolvedAt - requestedAt, 0); + timeUntilResolved = Math.min(timeUntilCachedIsResolved, timeUntilResolved); + } + + const resolvedAt = requestedAt + timeUntilResolved; + if (shouldUpdateCache) this._updateCacheResolvedAtIfNeeded(request, resolvedAt); + + return timeUntilResolved; + } + + /** + * @param {LH.Artifacts.NetworkRequest} request + * @param {number} resolvedAt + */ + _updateCacheResolvedAtIfNeeded(request, resolvedAt) { + const domain = request.parsedURL.host; + const cacheEntry = this._resolvedDomainNames.get(domain) || {resolvedAt}; + cacheEntry.resolvedAt = Math.min(cacheEntry.resolvedAt, resolvedAt); + this._resolvedDomainNames.set(domain, cacheEntry); + } + + /** + * Forcefully sets the DNS resolution time for a record. + * Useful for testing and alternate execution simulations. + * + * @param {string} domain + * @param {number} resolvedAt + */ + setResolvedAt(domain, resolvedAt) { + this._resolvedDomainNames.set(domain, {resolvedAt}); + } +} + +DNSCache.RTT_MULTIPLIER = DNS_RESOLUTION_RTT_MULTIPLIER; + +module.exports = DNSCache; diff --git a/lighthouse-core/lib/dependency-graph/simulator/simulator.js b/lighthouse-core/lib/dependency-graph/simulator/simulator.js index d020693ff35c..8a4c5f4ba6ee 100644 --- a/lighthouse-core/lib/dependency-graph/simulator/simulator.js +++ b/lighthouse-core/lib/dependency-graph/simulator/simulator.js @@ -8,6 +8,7 @@ const BaseNode = require('../base-node'); const TcpConnection = require('./tcp-connection'); const ConnectionPool = require('./connection-pool'); +const DNSCache = require('./dns-cache'); const mobile3G = require('../../../config/constants').throttling.mobile3G; /** @typedef {BaseNode.Node} Node */ @@ -66,6 +67,7 @@ class Simulator { /** @type {Map} */ this._numberInProgressByType = new Map(); this._nodes = {}; + this._dns = new DNSCache({rtt: this._rtt}); // @ts-ignore this._connectionPool = /** @type {ConnectionPool} */ (null); } @@ -260,20 +262,26 @@ class Simulator { * @return {number} */ _estimateNetworkTimeRemaining(networkNode) { + const record = networkNode.record; const timingData = this._getTimingData(networkNode); let timeElapsed = 0; if (networkNode.fromDiskCache) { - // Rough access time for seeking to location on disk and reading sequentially + // Rough access time for seeking to location on disk and reading sequentially = 8ms + 20ms/MB // @see http://norvig.com/21-days.html#answers - const sizeInMb = (networkNode.record.resourceSize || 0) / 1024 / 1024; + const sizeInMb = (record.resourceSize || 0) / 1024 / 1024; timeElapsed = 8 + 20 * sizeInMb - timingData.timeElapsed; } else { // If we're estimating time remaining, we already acquired a connection for this record, definitely non-null - const connection = /** @type {TcpConnection} */ (this._acquireConnection(networkNode.record)); + const connection = /** @type {TcpConnection} */ (this._acquireConnection(record)); + const dnsResolutionTime = this._dns.getTimeUntilResolution(record, { + requestedAt: timingData.startTime, + shouldUpdateCache: true, + }); + const timeAlreadyElapsed = timingData.timeElapsed; const calculation = connection.simulateDownloadUntil( - networkNode.record.transferSize - timingData.bytesDownloaded, - {timeAlreadyElapsed: timingData.timeElapsed, maximumTimeToElapse: Infinity} + record.transferSize - timingData.bytesDownloaded, + {timeAlreadyElapsed, dnsResolutionTime, maximumTimeToElapse: Infinity} ); timeElapsed = calculation.timeElapsed; @@ -318,9 +326,14 @@ class Simulator { const record = node.record; // If we're updating the progress, we already acquired a connection for this record, definitely non-null const connection = /** @type {TcpConnection} */ (this._acquireConnection(record)); + const dnsResolutionTime = this._dns.getTimeUntilResolution(record, { + requestedAt: timingData.startTime, + shouldUpdateCache: true, + }); const calculation = connection.simulateDownloadUntil( record.transferSize - timingData.bytesDownloaded, { + dnsResolutionTime, timeAlreadyElapsed: timingData.timeElapsed, maximumTimeToElapse: timePeriodLength - timingData.timeElapsedOvershoot, } @@ -386,6 +399,7 @@ class Simulator { // initialize the necessary data containers this._flexibleOrdering = !!options.flexibleOrdering; + this._dns = new DNSCache({rtt: this._rtt}); this._initializeConnectionPool(graph); this._initializeAuxiliaryData(); diff --git a/lighthouse-core/lib/dependency-graph/simulator/tcp-connection.js b/lighthouse-core/lib/dependency-graph/simulator/tcp-connection.js index 56c41c0c2297..2ec8ca4d7cfa 100644 --- a/lighthouse-core/lib/dependency-graph/simulator/tcp-connection.js +++ b/lighthouse-core/lib/dependency-graph/simulator/tcp-connection.js @@ -121,7 +121,8 @@ class TcpConnection { * @return {DownloadResults} */ simulateDownloadUntil(bytesToDownload, options) { - const {timeAlreadyElapsed = 0, maximumTimeToElapse = Infinity} = options || {}; + const {timeAlreadyElapsed = 0, maximumTimeToElapse = Infinity, dnsResolutionTime = 0} = + options || {}; if (this._warmed && this._h2) { bytesToDownload -= this._h2OverflowBytesDownloaded; @@ -133,6 +134,8 @@ class TcpConnection { let handshakeAndRequest = oneWayLatency; if (!this._warmed) { handshakeAndRequest = + // DNS lookup + dnsResolutionTime + // SYN oneWayLatency + // SYN ACK @@ -188,6 +191,7 @@ module.exports = TcpConnection; /** * @typedef DownloadOptions + * @property {number} [dnsResolutionTime] * @property {number} [timeAlreadyElapsed] * @property {number} [maximumTimeToElapse] */ diff --git a/lighthouse-core/test/audits/__snapshots__/load-fast-enough-for-pwa-test.js.snap b/lighthouse-core/test/audits/__snapshots__/load-fast-enough-for-pwa-test.js.snap new file mode 100644 index 000000000000..76513e9d6c82 --- /dev/null +++ b/lighthouse-core/test/audits/__snapshots__/load-fast-enough-for-pwa-test.js.snap @@ -0,0 +1,3 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`PWA: load-fast-enough-for-pwa audit overrides with simulated result when throttling is modified 1`] = `3427`; diff --git a/lighthouse-core/test/audits/__snapshots__/metrics-test.js.snap b/lighthouse-core/test/audits/__snapshots__/metrics-test.js.snap new file mode 100644 index 000000000000..1628771b1d7e --- /dev/null +++ b/lighthouse-core/test/audits/__snapshots__/metrics-test.js.snap @@ -0,0 +1,38 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Performance: metrics evaluates valid input correctly 1`] = ` +Object { + "estimatedInputLatency": 104, + "estimatedInputLatencyTs": undefined, + "firstCPUIdle": 3351, + "firstCPUIdleTs": undefined, + "firstContentfulPaint": 911, + "firstContentfulPaintTs": undefined, + "firstMeaningfulPaint": 1355, + "firstMeaningfulPaintTs": undefined, + "interactive": 3427, + "interactiveTs": undefined, + "observedDomContentLoaded": 560, + "observedDomContentLoadedTs": 225414732309, + "observedFirstContentfulPaint": 499, + "observedFirstContentfulPaintTs": 225414670885, + "observedFirstMeaningfulPaint": 783, + "observedFirstMeaningfulPaintTs": 225414955343, + "observedFirstPaint": 499, + "observedFirstPaintTs": 225414670868, + "observedFirstVisualChange": 520, + "observedFirstVisualChangeTs": 225414692015, + "observedLastVisualChange": 818, + "observedLastVisualChangeTs": 225414990015, + "observedLoad": 2199, + "observedLoadTs": 225416370913, + "observedNavigationStart": 0, + "observedNavigationStartTs": 225414172015, + "observedSpeedIndex": 605, + "observedSpeedIndexTs": 225414776724, + "observedTraceEnd": 12540, + "observedTraceEndTs": 225426711887, + "speedIndex": 1656, + "speedIndexTs": undefined, +} +`; diff --git a/lighthouse-core/test/audits/__snapshots__/predictive-perf-test.js.snap b/lighthouse-core/test/audits/__snapshots__/predictive-perf-test.js.snap new file mode 100644 index 000000000000..6b830375716f --- /dev/null +++ b/lighthouse-core/test/audits/__snapshots__/predictive-perf-test.js.snap @@ -0,0 +1,24 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Performance: predictive performance audit should compute the predicted values 1`] = ` +Object { + "optimisticEIL": 101, + "optimisticFCP": 911, + "optimisticFMP": 1211, + "optimisticSI": 605, + "optimisticTTFCPUI": 3351, + "optimisticTTI": 3351, + "pessimisticEIL": 158, + "pessimisticFCP": 911, + "pessimisticFMP": 1498, + "pessimisticSI": 1630, + "pessimisticTTFCPUI": 3502, + "pessimisticTTI": 3502, + "roughEstimateOfEIL": 104, + "roughEstimateOfFCP": 911, + "roughEstimateOfFMP": 1355, + "roughEstimateOfSI": 1656, + "roughEstimateOfTTFCPUI": 3351, + "roughEstimateOfTTI": 3427, +} +`; diff --git a/lighthouse-core/test/audits/byte-efficiency/__snapshots__/byte-efficiency-audit-test.js.snap b/lighthouse-core/test/audits/byte-efficiency/__snapshots__/byte-efficiency-audit-test.js.snap new file mode 100644 index 000000000000..a4a33dd54b97 --- /dev/null +++ b/lighthouse-core/test/audits/byte-efficiency/__snapshots__/byte-efficiency-audit-test.js.snap @@ -0,0 +1,12 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Byte efficiency base audit should allow overriding of computeWasteWithTTIGraph 1`] = ` +Object { + "default": 1330, + "justTTI": 950, +} +`; + +exports[`Byte efficiency base audit should create load simulator with the specified settings 1`] = `1330`; + +exports[`Byte efficiency base audit should create load simulator with the specified settings 2`] = `22950`; diff --git a/lighthouse-core/test/audits/byte-efficiency/byte-efficiency-audit-test.js b/lighthouse-core/test/audits/byte-efficiency/byte-efficiency-audit-test.js index 330e33b28163..598eee70c121 100644 --- a/lighthouse-core/test/audits/byte-efficiency/byte-efficiency-audit-test.js +++ b/lighthouse-core/test/audits/byte-efficiency/byte-efficiency-audit-test.js @@ -218,12 +218,14 @@ describe('Byte efficiency base audit', () => { let settings = {throttlingMethod: 'simulate', throttling: modestThrottling}; let result = await MockAudit.audit(artifacts, {settings}); // expect modest savings - assert.equal(result.rawValue, 1480); + expect(result.rawValue).toBeLessThan(5000); + expect(result.rawValue).toMatchSnapshot(); settings = {throttlingMethod: 'simulate', throttling: ultraSlowThrottling}; result = await MockAudit.audit(artifacts, {settings}); // expect lots of savings - assert.equal(result.rawValue, 22350); + expect(result.rawValue).not.toBeLessThan(5000); + expect(result.rawValue).toMatchSnapshot(); }); it('should allow overriding of computeWasteWithTTIGraph', async () => { @@ -251,8 +253,8 @@ describe('Byte efficiency base audit', () => { const settings = {throttlingMethod: 'simulate', throttling: modestThrottling}; const result = await MockAudit.audit(artifacts, {settings}); const resultTti = await MockJustTTIAudit.audit(artifacts, {settings}); - // expect more savings from default - assert.equal(result.rawValue, 1480); - assert.equal(resultTti.rawValue, 800); + // expect less savings with just TTI + expect(resultTti.rawValue).toBeLessThan(result.rawValue); + expect({default: result.rawValue, justTTI: resultTti.rawValue}).toMatchSnapshot(); }); }); diff --git a/lighthouse-core/test/audits/byte-efficiency/render-blocking-resources-test.js b/lighthouse-core/test/audits/byte-efficiency/render-blocking-resources-test.js index d3bc695fa1c5..e1a71999a033 100644 --- a/lighthouse-core/test/audits/byte-efficiency/render-blocking-resources-test.js +++ b/lighthouse-core/test/audits/byte-efficiency/render-blocking-resources-test.js @@ -51,7 +51,7 @@ describe('Render blocking resources audit', () => { beforeEach(() => { requestId = 1; record = props => { - const parsedURL = {securityOrigin: 'http://example.com'}; + const parsedURL = {host: 'example.com', securityOrigin: 'http://example.com'}; return Object.assign({parsedURL, requestId: requestId++}, props); }; }); diff --git a/lighthouse-core/test/audits/load-fast-enough-for-pwa-test.js b/lighthouse-core/test/audits/load-fast-enough-for-pwa-test.js index be5e5147f815..283f9bccf45e 100644 --- a/lighthouse-core/test/audits/load-fast-enough-for-pwa-test.js +++ b/lighthouse-core/test/audits/load-fast-enough-for-pwa-test.js @@ -67,6 +67,7 @@ describe('PWA: load-fast-enough-for-pwa audit', () => { const settings = {throttlingMethod: 'provided', throttling: {rttMs: 40, throughput: 100000}}; const result = await FastPWAAudit.audit(artifacts, {settings}); - assert.equal(Math.round(result.rawValue), 4309); + expect(result.rawValue).toBeGreaterThan(2000); + expect(Math.round(result.rawValue)).toMatchSnapshot(); }); }); diff --git a/lighthouse-core/test/audits/metrics-test.js b/lighthouse-core/test/audits/metrics-test.js index 7fced6377d7d..2d6bc31a6a1a 100644 --- a/lighthouse-core/test/audits/metrics-test.js +++ b/lighthouse-core/test/audits/metrics-test.js @@ -7,7 +7,6 @@ const Audit = require('../../audits/metrics.js'); const Runner = require('../../runner.js'); -const assert = require('assert'); const pwaTrace = require('../fixtures/traces/progressive-app-m60.json'); const pwaDevtoolsLog = require('../fixtures/traces/progressive-app-m60.devtools.log.json'); @@ -27,41 +26,6 @@ describe('Performance: metrics', () => { const settings = {throttlingMethod: 'simulate'}; const result = await Audit.audit(artifacts, {settings}); - - assert.deepStrictEqual(result.details.items[0], { - firstContentfulPaint: 1038, - firstContentfulPaintTs: undefined, - firstMeaningfulPaint: 1949, - firstMeaningfulPaintTs: undefined, - firstCPUIdle: 4309, - firstCPUIdleTs: undefined, - interactive: 4309, - interactiveTs: undefined, - speedIndex: 1461, - speedIndexTs: undefined, - estimatedInputLatency: 104, - estimatedInputLatencyTs: undefined, - - observedNavigationStart: 0, - observedNavigationStartTs: 225414172015, - observedFirstPaint: 499, - observedFirstPaintTs: 225414670868, - observedFirstContentfulPaint: 499, - observedFirstContentfulPaintTs: 225414670885, - observedFirstMeaningfulPaint: 783, - observedFirstMeaningfulPaintTs: 225414955343, - observedTraceEnd: 12540, - observedTraceEndTs: 225426711887, - observedLoad: 2199, - observedLoadTs: 225416370913, - observedDomContentLoaded: 560, - observedDomContentLoadedTs: 225414732309, - observedFirstVisualChange: 520, - observedFirstVisualChangeTs: 225414692015, - observedLastVisualChange: 818, - observedLastVisualChangeTs: 225414990015, - observedSpeedIndex: 605, - observedSpeedIndexTs: 225414776724, - }); + expect(result.details.items[0]).toMatchSnapshot(); }); }); diff --git a/lighthouse-core/test/audits/metrics/__snapshots__/first-meaningful-paint-test.js.snap b/lighthouse-core/test/audits/metrics/__snapshots__/first-meaningful-paint-test.js.snap new file mode 100644 index 000000000000..779d6b85fb55 --- /dev/null +++ b/lighthouse-core/test/audits/metrics/__snapshots__/first-meaningful-paint-test.js.snap @@ -0,0 +1,12 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Performance: first-meaningful-paint audit computes FMP correctly for simulated 1`] = ` +Object { + "displayValue": Array [ + "%10d ms", + 1354.506000038469, + ], + "rawValue": 1354.506000038469, + "score": 1, +} +`; diff --git a/lighthouse-core/test/audits/metrics/first-meaningful-paint-test.js b/lighthouse-core/test/audits/metrics/first-meaningful-paint-test.js index 162ee9cc9fe6..9aeee36c295a 100644 --- a/lighthouse-core/test/audits/metrics/first-meaningful-paint-test.js +++ b/lighthouse-core/test/audits/metrics/first-meaningful-paint-test.js @@ -39,8 +39,10 @@ describe('Performance: first-meaningful-paint audit', () => { const context = {options, settings: {throttlingMethod: 'simulate'}}; const fmpResult = await FMPAudit.audit(artifacts, context); - assert.equal(fmpResult.score, 0.96); - assert.equal(Util.formatDisplayValue(fmpResult.displayValue), '1,950\xa0ms'); - assert.equal(Math.round(fmpResult.rawValue), 1949); + expect({ + score: fmpResult.score, + rawValue: fmpResult.rawValue, + displayValue: fmpResult.displayValue, + }).toMatchSnapshot(); }); }); diff --git a/lighthouse-core/test/audits/predictive-perf-test.js b/lighthouse-core/test/audits/predictive-perf-test.js index 8d07e0a25be1..4eab2c36bd23 100644 --- a/lighthouse-core/test/audits/predictive-perf-test.js +++ b/lighthouse-core/test/audits/predictive-perf-test.js @@ -7,7 +7,6 @@ const PredictivePerf = require('../../audits/predictive-perf.js'); const Runner = require('../../runner.js'); -const assert = require('assert'); const acceptableTrace = require('../fixtures/traces/progressive-app-m60.json'); const acceptableDevToolsLog = require('../fixtures/traces/progressive-app-m60.devtools.log.json'); @@ -25,20 +24,12 @@ describe('Performance: predictive performance audit', () => { }, Runner.instantiateComputedArtifacts()); return PredictivePerf.audit(artifacts).then(output => { - assert.equal(output.score, 0.86); - assert.equal(Math.round(output.rawValue), 4309); - assert.equal(output.displayValue, '4,310\xa0ms'); + const metrics = output.details.items[0]; + for (const [key, value] of Object.entries(metrics)) { + metrics[key] = Math.round(value); + } - const valueOf = name => Math.round(output.details.items[0][name]); - assert.equal(valueOf('roughEstimateOfFCP'), 1038); - assert.equal(valueOf('optimisticFCP'), 611); - assert.equal(valueOf('pessimisticFCP'), 611); - assert.equal(valueOf('roughEstimateOfFMP'), 1949); - assert.equal(valueOf('optimisticFMP'), 911); - assert.equal(valueOf('pessimisticFMP'), 1198); - assert.equal(valueOf('roughEstimateOfTTI'), 4309); - assert.equal(valueOf('optimisticTTI'), 2451); - assert.equal(valueOf('pessimisticTTI'), 2752); + expect(metrics).toMatchSnapshot(); }); }); }); diff --git a/lighthouse-core/test/fixtures/lantern-master-computed-values.json b/lighthouse-core/test/fixtures/lantern-master-computed-values.json index c128d855c651..7727a77304ed 100644 --- a/lighthouse-core/test/fixtures/lantern-master-computed-values.json +++ b/lighthouse-core/test/fixtures/lantern-master-computed-values.json @@ -1,103 +1,103 @@ { "sites": [ - {"url": "https://flipkart.com", "roughEstimateOfFCP": 2819, "optimisticFCP": 2017, "pessimisticFCP": 2017, "roughEstimateOfFMP": 6108, "optimisticFMP": 4960, "pessimisticFMP": 4960, "roughEstimateOfTTI": 12534, "optimisticTTI": 9513, "pessimisticTTI": 11613, "roughEstimateOfTTFCPUI": 12534, "optimisticTTFCPUI": 9513, "pessimisticTTFCPUI": 11613, "roughEstimateOfSI": 6223, "optimisticSI": 3687, "pessimisticSI": 2017, "roughEstimateOfEIL": 766, "optimisticEIL": 957, "pessimisticEIL": 957}, - {"url": "https://vine.co/", "roughEstimateOfFCP": 1977, "optimisticFCP": 1251, "pessimisticFCP": 1251, "roughEstimateOfFMP": 3204, "optimisticFMP": 1251, "pessimisticFMP": 2901, "roughEstimateOfTTI": 8901, "optimisticTTI": 6372, "pessimisticTTI": 7727, "roughEstimateOfTTFCPUI": 8901, "optimisticTTFCPUI": 6372, "pessimisticTTFCPUI": 7727, "roughEstimateOfSI": 3707, "optimisticSI": 2246, "pessimisticSI": 1251, "roughEstimateOfEIL": 961, "optimisticEIL": 1202, "pessimisticEIL": 1202}, - {"url": "https://weather.com/", "roughEstimateOfFCP": 5617, "optimisticFCP": 4561, "pessimisticFCP": 4561, "roughEstimateOfFMP": 5689, "optimisticFMP": 4561, "pessimisticFMP": 4561, "roughEstimateOfTTI": 25785, "optimisticTTI": 20854, "pessimisticTTI": 25939, "roughEstimateOfTTFCPUI": 25785, "optimisticTTFCPUI": 20854, "pessimisticTTFCPUI": 25939, "roughEstimateOfSI": 6301, "optimisticSI": 2561, "pessimisticSI": 4561, "roughEstimateOfEIL": 1648, "optimisticEIL": 2060, "pessimisticEIL": 2060}, - {"url": "http://www.4399.com/", "roughEstimateOfFCP": 3554, "optimisticFCP": 2685, "pessimisticFCP": 2685, "roughEstimateOfFMP": 3719, "optimisticFMP": 2685, "pessimisticFMP": 2685, "roughEstimateOfTTI": 5551, "optimisticTTI": 2696, "pessimisticTTI": 5185, "roughEstimateOfTTFCPUI": 5551, "optimisticTTFCPUI": 2696, "pessimisticTTFCPUI": 5185, "roughEstimateOfSI": 3554, "optimisticSI": 350, "pessimisticSI": 2685, "roughEstimateOfEIL": 13, "optimisticEIL": 16, "pessimisticEIL": 16}, - {"url": "http://www.4shared.com/", "roughEstimateOfFCP": 4380, "optimisticFCP": 3437, "pessimisticFCP": 3437, "roughEstimateOfFMP": 4509, "optimisticFMP": 3437, "pessimisticFMP": 3437, "roughEstimateOfTTI": 6302, "optimisticTTI": 4192, "pessimisticTTI": 4860, "roughEstimateOfTTFCPUI": 6302, 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"optimisticTTI": 5002, "pessimisticTTI": 5752, "roughEstimateOfTTFCPUI": 5002, "optimisticTTFCPUI": 5002, "pessimisticTTFCPUI": 5752, "roughEstimateOfSI": 11137, "optimisticSI": 6630, "pessimisticSI": 3239, "roughEstimateOfEIL": 85, "optimisticEIL": 106, "pessimisticEIL": 106}, + {"url": "http://www.thestar.com.my", "roughEstimateOfFCP": 6037, "optimisticFCP": 5960, "pessimisticFCP": 6114, "roughEstimateOfFMP": 6531, "optimisticFMP": 5960, "pessimisticFMP": 7101, "roughEstimateOfTTI": 15401, "optimisticTTI": 12009, "pessimisticTTI": 18793, "roughEstimateOfTTFCPUI": 12009, "optimisticTTFCPUI": 12009, "pessimisticTTFCPUI": 18793, "roughEstimateOfSI": 11724, "optimisticSI": 5714, "pessimisticSI": 6114, "roughEstimateOfEIL": 275, "optimisticEIL": 344, "pessimisticEIL": 344}, + {"url": "http://www.tianya.cn/", "roughEstimateOfFCP": 1894, "optimisticFCP": 1894, "pessimisticFCP": 1894, "roughEstimateOfFMP": 1894, "optimisticFMP": 1894, "pessimisticFMP": 1894, "roughEstimateOfTTI": 7217, "optimisticTTI": 6062, "pessimisticTTI": 8371, "roughEstimateOfTTFCPUI": 6062, "optimisticTTFCPUI": 6062, "pessimisticTTFCPUI": 8371, "roughEstimateOfSI": 9288, "optimisticSI": 5933, "pessimisticSI": 1894, "roughEstimateOfEIL": 2076, "optimisticEIL": 2595, "pessimisticEIL": 2595}, + {"url": "http://www.torrentz.com/", "roughEstimateOfFCP": 605, "optimisticFCP": 605, "pessimisticFCP": 605, "roughEstimateOfFMP": 605, "optimisticFMP": 605, "pessimisticFMP": 605, "roughEstimateOfTTI": 995, "optimisticTTI": 972, "pessimisticTTI": 1017, "roughEstimateOfTTFCPUI": 972, "optimisticTTFCPUI": 972, "pessimisticTTFCPUI": 1067, "roughEstimateOfSI": 1225, "optimisticSI": 773, "pessimisticSI": 605, "roughEstimateOfEIL": 13, "optimisticEIL": 16, "pessimisticEIL": 16}, + {"url": "http://www.tumblr.com/", "roughEstimateOfFCP": 6914, "optimisticFCP": 6914, "pessimisticFCP": 6914, "roughEstimateOfFMP": 6914, "optimisticFMP": 6914, "pessimisticFMP": 6914, "roughEstimateOfTTI": 12007, "optimisticTTI": 11712, "pessimisticTTI": 12302, "roughEstimateOfTTFCPUI": 11712, "optimisticTTFCPUI": 11712, "pessimisticTTFCPUI": 12302, "roughEstimateOfSI": 6914, "optimisticSI": 1280, "pessimisticSI": 6914, "roughEstimateOfEIL": 2035, "optimisticEIL": 2544, "pessimisticEIL": 2544}, + {"url": "http://www.twitpic.com/", "roughEstimateOfFCP": 2177, "optimisticFCP": 2177, "pessimisticFCP": 2177, "roughEstimateOfFMP": 6139, "optimisticFMP": 6139, "pessimisticFMP": 6139, "roughEstimateOfTTI": 7864, "optimisticTTI": 7789, "pessimisticTTI": 7939, "roughEstimateOfTTFCPUI": 7789, "optimisticTTFCPUI": 7789, "pessimisticTTFCPUI": 7939, "roughEstimateOfSI": 3168, "optimisticSI": 1431, "pessimisticSI": 2177, "roughEstimateOfEIL": 981, "optimisticEIL": 1226, "pessimisticEIL": 1226}, + {"url": "http://www.typepad.com/", "roughEstimateOfFCP": 3182, "optimisticFCP": 2126, "pessimisticFCP": 4238, "roughEstimateOfFMP": 3343, "optimisticFMP": 2447, "pessimisticFMP": 4238, "roughEstimateOfTTI": 4421, "optimisticTTI": 3726, "pessimisticTTI": 5117, "roughEstimateOfTTFCPUI": 3726, "optimisticTTFCPUI": 3726, "pessimisticTTFCPUI": 5117, "roughEstimateOfSI": 3852, "optimisticSI": 962, "pessimisticSI": 4238, "roughEstimateOfEIL": 108, "optimisticEIL": 16, "pessimisticEIL": 253}, + {"url": "http://www.verizonwireless.com/", "roughEstimateOfFCP": 2901, "optimisticFCP": 2901, "pessimisticFCP": 2901, "roughEstimateOfFMP": 3654, "optimisticFMP": 3654, "pessimisticFMP": 3654, "roughEstimateOfTTI": 15968, "optimisticTTI": 13945, "pessimisticTTI": 17991, "roughEstimateOfTTFCPUI": 13945, "optimisticTTFCPUI": 13945, "pessimisticTTFCPUI": 17991, "roughEstimateOfSI": 3827, "optimisticSI": 1565, "pessimisticSI": 2901, "roughEstimateOfEIL": 931, "optimisticEIL": 1164, "pessimisticEIL": 1164}, + {"url": "http://www.vevo.com/", "roughEstimateOfFCP": 2111, "optimisticFCP": 2111, "pessimisticFCP": 2111, "roughEstimateOfFMP": 2968, "optimisticFMP": 2968, "pessimisticFMP": 2968, "roughEstimateOfTTI": 23106, "optimisticTTI": 19123, "pessimisticTTI": 27089, "roughEstimateOfTTFCPUI": 19123, "optimisticTTFCPUI": 19123, "pessimisticTTFCPUI": 4548, "roughEstimateOfSI": 4367, "optimisticSI": 2318, "pessimisticSI": 2111, "roughEstimateOfEIL": 2218, "optimisticEIL": 2772, "pessimisticEIL": 2772}, + {"url": "http://www.weather.com/", "roughEstimateOfFCP": 6576, "optimisticFCP": 6576, "pessimisticFCP": 6576, "roughEstimateOfFMP": 6576, "optimisticFMP": 6576, "pessimisticFMP": 6576, "roughEstimateOfTTI": 28787, "optimisticTTI": 24955, "pessimisticTTI": 32619, "roughEstimateOfTTFCPUI": 24955, "optimisticTTFCPUI": 24955, "pessimisticTTFCPUI": 32619, "roughEstimateOfSI": 8517, "optimisticSI": 3209, "pessimisticSI": 6576, "roughEstimateOfEIL": 1338, "optimisticEIL": 1672, "pessimisticEIL": 1672}, + {"url": "http://www.wikipedia.org/", "roughEstimateOfFCP": 1234, "optimisticFCP": 1234, "pessimisticFCP": 1234, "roughEstimateOfFMP": 1234, "optimisticFMP": 1234, "pessimisticFMP": 1234, "roughEstimateOfTTI": 4416, "optimisticTTI": 4370, "pessimisticTTI": 4461, "roughEstimateOfTTFCPUI": 4370, "optimisticTTFCPUI": 4370, "pessimisticTTFCPUI": 4461, "roughEstimateOfSI": 2494, "optimisticSI": 1387, "pessimisticSI": 1234, "roughEstimateOfEIL": 1682, "optimisticEIL": 2102, "pessimisticEIL": 2102}, + {"url": "http://www.ynet.com/", "roughEstimateOfFCP": 2344, "optimisticFCP": 2344, "pessimisticFCP": 2344, "roughEstimateOfFMP": 2344, "optimisticFMP": 2344, "pessimisticFMP": 2344, "roughEstimateOfTTI": 9248, "optimisticTTI": 4413, "pessimisticTTI": 14083, "roughEstimateOfTTFCPUI": 4413, "optimisticTTFCPUI": 4413, "pessimisticTTFCPUI": 4099, "roughEstimateOfSI": 5079, "optimisticSI": 2718, "pessimisticSI": 2344, "roughEstimateOfEIL": 152, "optimisticEIL": 190, "pessimisticEIL": 190}, + {"url": "http://www.youdao.com/", "roughEstimateOfFCP": 3063, "optimisticFCP": 3063, "pessimisticFCP": 3063, "roughEstimateOfFMP": 3063, "optimisticFMP": 3063, "pessimisticFMP": 3063, "roughEstimateOfTTI": 3063, "optimisticTTI": 3063, "pessimisticTTI": 3063, "roughEstimateOfTTFCPUI": 3063, "optimisticTTFCPUI": 1531, "pessimisticTTFCPUI": 1577, "roughEstimateOfSI": 6467, "optimisticSI": 3376, "pessimisticSI": 3063, "roughEstimateOfEIL": 13, "optimisticEIL": 16, "pessimisticEIL": 16}, + {"url": "http://www.zol.com.cn/", "roughEstimateOfFCP": 2924, "optimisticFCP": 1941, "pessimisticFCP": 3907, "roughEstimateOfFMP": 2924, "optimisticFMP": 1941, "pessimisticFMP": 3907, "roughEstimateOfTTI": 11501, "optimisticTTI": 6545, "pessimisticTTI": 16457, "roughEstimateOfTTFCPUI": 6545, "optimisticTTFCPUI": 6545, "pessimisticTTFCPUI": 2407, "roughEstimateOfSI": 14233, "optimisticSI": 8531, "pessimisticSI": 3907, "roughEstimateOfEIL": 249, "optimisticEIL": 83, "pessimisticEIL": 539} ] } \ No newline at end of file diff --git a/lighthouse-core/test/gather/computed/metrics/__snapshots__/estimated-input-latency-test.js.snap b/lighthouse-core/test/gather/computed/metrics/__snapshots__/estimated-input-latency-test.js.snap new file mode 100644 index 000000000000..2217fa45756b --- /dev/null +++ b/lighthouse-core/test/gather/computed/metrics/__snapshots__/estimated-input-latency-test.js.snap @@ -0,0 +1,9 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Metrics: EIL should compute a simulated value 1`] = ` +Object { + "optimistic": 101, + "pessimistic": 158, + "timing": 104, +} +`; diff --git a/lighthouse-core/test/gather/computed/metrics/__snapshots__/first-contentful-paint-test.js.snap b/lighthouse-core/test/gather/computed/metrics/__snapshots__/first-contentful-paint-test.js.snap new file mode 100644 index 000000000000..36371a798a5c --- /dev/null +++ b/lighthouse-core/test/gather/computed/metrics/__snapshots__/first-contentful-paint-test.js.snap @@ -0,0 +1,9 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Metrics: FCP should compute a simulated value 1`] = ` +Object { + "optimistic": 911, + "pessimistic": 911, + "timing": 911, +} +`; diff --git a/lighthouse-core/test/gather/computed/metrics/__snapshots__/first-cpu-idle-test.js.snap b/lighthouse-core/test/gather/computed/metrics/__snapshots__/first-cpu-idle-test.js.snap new file mode 100644 index 000000000000..22efa0102e25 --- /dev/null +++ b/lighthouse-core/test/gather/computed/metrics/__snapshots__/first-cpu-idle-test.js.snap @@ -0,0 +1,9 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`FirstInteractive computed artifact: should simulate when settings specify 1`] = ` +Object { + "optimistic": 3351, + "pessimistic": 3502, + "timing": 3351, +} +`; diff --git a/lighthouse-core/test/gather/computed/metrics/__snapshots__/first-meaningful-paint-test.js.snap b/lighthouse-core/test/gather/computed/metrics/__snapshots__/first-meaningful-paint-test.js.snap new file mode 100644 index 000000000000..073b65db0383 --- /dev/null +++ b/lighthouse-core/test/gather/computed/metrics/__snapshots__/first-meaningful-paint-test.js.snap @@ -0,0 +1,9 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Metrics: FMP should compute a simulated value 1`] = ` +Object { + "optimistic": 1211, + "pessimistic": 1498, + "timing": 1355, +} +`; diff --git a/lighthouse-core/test/gather/computed/metrics/__snapshots__/interactive-test.js.snap b/lighthouse-core/test/gather/computed/metrics/__snapshots__/interactive-test.js.snap new file mode 100644 index 000000000000..6a7b6fdf287d --- /dev/null +++ b/lighthouse-core/test/gather/computed/metrics/__snapshots__/interactive-test.js.snap @@ -0,0 +1,9 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Metrics: TTI should compute a simulated value 1`] = ` +Object { + "optimistic": 3351, + "pessimistic": 3502, + "timing": 3427, +} +`; diff --git a/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-estimated-input-latency-test.js.snap b/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-estimated-input-latency-test.js.snap new file mode 100644 index 000000000000..8b76d120edea --- /dev/null +++ b/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-estimated-input-latency-test.js.snap @@ -0,0 +1,9 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Metrics: Lantern EIL should compute a simulated value 1`] = ` +Object { + "optimistic": 101, + "pessimistic": 158, + "timing": 104, +} +`; diff --git a/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-first-contentful-paint-test.js.snap b/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-first-contentful-paint-test.js.snap new file mode 100644 index 000000000000..74cb6de2587b --- /dev/null +++ b/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-first-contentful-paint-test.js.snap @@ -0,0 +1,9 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Metrics: Lantern FCP should compute predicted value 1`] = ` +Object { + "optimistic": 911, + "pessimistic": 911, + "timing": 911, +} +`; diff --git a/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-first-cpu-idle-test.js.snap b/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-first-cpu-idle-test.js.snap new file mode 100644 index 000000000000..557f245565a0 --- /dev/null +++ b/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-first-cpu-idle-test.js.snap @@ -0,0 +1,9 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Metrics: Lantern TTFCPUI should compute predicted value 1`] = ` +Object { + "optimistic": 3351, + "pessimistic": 3502, + "timing": 3351, +} +`; diff --git a/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-first-meaningful-paint-test.js.snap b/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-first-meaningful-paint-test.js.snap new file mode 100644 index 000000000000..ac3469f508ee --- /dev/null +++ b/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-first-meaningful-paint-test.js.snap @@ -0,0 +1,9 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Metrics: Lantern FMP should compute predicted value 1`] = ` +Object { + "optimistic": 1211, + "pessimistic": 1498, + "timing": 1355, +} +`; diff --git a/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-interactive-test.js.snap b/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-interactive-test.js.snap new file mode 100644 index 000000000000..df27af4e3e39 --- /dev/null +++ b/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-interactive-test.js.snap @@ -0,0 +1,9 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Metrics: Lantern TTI should compute predicted value 1`] = ` +Object { + "optimistic": 3351, + "pessimistic": 3502, + "timing": 3427, +} +`; diff --git a/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-speed-index-test.js.snap b/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-speed-index-test.js.snap new file mode 100644 index 000000000000..7b4ceed389a0 --- /dev/null +++ b/lighthouse-core/test/gather/computed/metrics/__snapshots__/lantern-speed-index-test.js.snap @@ -0,0 +1,9 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Metrics: Lantern Speed Index should compute predicted value 1`] = ` +Object { + "optimistic": 605, + "pessimistic": 1630, + "timing": 1656, +} +`; diff --git a/lighthouse-core/test/gather/computed/metrics/__snapshots__/speed-index-test.js.snap b/lighthouse-core/test/gather/computed/metrics/__snapshots__/speed-index-test.js.snap new file mode 100644 index 000000000000..61a193fc7b46 --- /dev/null +++ b/lighthouse-core/test/gather/computed/metrics/__snapshots__/speed-index-test.js.snap @@ -0,0 +1,9 @@ +// Jest Snapshot v1, https://goo.gl/fbAQLP + +exports[`Metrics: Speed Index should compute a simulated value 1`] = ` +Object { + "optimistic": 605, + "pessimistic": 1630, + "timing": 1656, +} +`; diff --git a/lighthouse-core/test/gather/computed/metrics/estimated-input-latency-test.js b/lighthouse-core/test/gather/computed/metrics/estimated-input-latency-test.js index c4bcabd55164..8276233cb440 100644 --- a/lighthouse-core/test/gather/computed/metrics/estimated-input-latency-test.js +++ b/lighthouse-core/test/gather/computed/metrics/estimated-input-latency-test.js @@ -20,9 +20,11 @@ describe('Metrics: EIL', () => { const settings = {throttlingMethod: 'simulate'}; const result = await artifacts.requestEstimatedInputLatency({trace, devtoolsLog, settings}); - assert.equal(Math.round(result.timing), 104); - assert.equal(Math.round(result.optimisticEstimate.timeInMs), 101); - assert.equal(Math.round(result.pessimisticEstimate.timeInMs), 158); + expect({ + timing: Math.round(result.timing), + optimistic: Math.round(result.optimisticEstimate.timeInMs), + pessimistic: Math.round(result.pessimisticEstimate.timeInMs), + }).toMatchSnapshot(); }); it('should compute an observed value', async () => { diff --git a/lighthouse-core/test/gather/computed/metrics/first-contentful-paint-test.js b/lighthouse-core/test/gather/computed/metrics/first-contentful-paint-test.js index ec162bf352f4..8333c634952b 100644 --- a/lighthouse-core/test/gather/computed/metrics/first-contentful-paint-test.js +++ b/lighthouse-core/test/gather/computed/metrics/first-contentful-paint-test.js @@ -19,9 +19,11 @@ describe('Metrics: FCP', () => { const settings = {throttlingMethod: 'simulate'}; const result = await artifacts.requestFirstContentfulPaint({trace, devtoolsLog, settings}); - assert.equal(Math.round(result.timing), 1038); - assert.equal(Math.round(result.optimisticEstimate.timeInMs), 611); - assert.equal(Math.round(result.pessimisticEstimate.timeInMs), 611); + expect({ + timing: Math.round(result.timing), + optimistic: Math.round(result.optimisticEstimate.timeInMs), + pessimistic: Math.round(result.pessimisticEstimate.timeInMs), + }).toMatchSnapshot(); assert.equal(result.optimisticEstimate.nodeTimings.size, 2); assert.equal(result.pessimisticEstimate.nodeTimings.size, 2); assert.ok(result.optimisticGraph, 'should have created optimistic graph'); diff --git a/lighthouse-core/test/gather/computed/metrics/first-cpu-idle-test.js b/lighthouse-core/test/gather/computed/metrics/first-cpu-idle-test.js index c09e891034c3..4d0602972b8d 100644 --- a/lighthouse-core/test/gather/computed/metrics/first-cpu-idle-test.js +++ b/lighthouse-core/test/gather/computed/metrics/first-cpu-idle-test.js @@ -63,9 +63,11 @@ describe('FirstInteractive computed artifact:', () => { const artifacts = Runner.instantiateComputedArtifacts(); const result = await artifacts.requestFirstCPUIdle({trace, devtoolsLog, settings}); - assert.equal(Math.round(result.timing), 4309); - assert.equal(Math.round(result.optimisticEstimate.timeInMs), 2451); - assert.equal(Math.round(result.pessimisticEstimate.timeInMs), 2752); + expect({ + timing: Math.round(result.timing), + optimistic: Math.round(result.optimisticEstimate.timeInMs), + pessimistic: Math.round(result.pessimisticEstimate.timeInMs), + }).toMatchSnapshot(); assert.equal(result.optimisticEstimate.nodeTimings.size, 19); assert.equal(result.pessimisticEstimate.nodeTimings.size, 79); assert.ok(result.optimisticGraph, 'should have created optimistic graph'); diff --git a/lighthouse-core/test/gather/computed/metrics/first-meaningful-paint-test.js b/lighthouse-core/test/gather/computed/metrics/first-meaningful-paint-test.js index f3cb850289fc..51accdf4b39d 100644 --- a/lighthouse-core/test/gather/computed/metrics/first-meaningful-paint-test.js +++ b/lighthouse-core/test/gather/computed/metrics/first-meaningful-paint-test.js @@ -39,9 +39,11 @@ describe('Metrics: FMP', () => { const result = await artifacts.requestFirstMeaningfulPaint({trace, devtoolsLog, settings}); - assert.equal(Math.round(result.timing), 1949); - assert.equal(Math.round(result.optimisticEstimate.timeInMs), 911); - assert.equal(Math.round(result.pessimisticEstimate.timeInMs), 1198); + expect({ + timing: Math.round(result.timing), + optimistic: Math.round(result.optimisticEstimate.timeInMs), + pessimistic: Math.round(result.pessimisticEstimate.timeInMs), + }).toMatchSnapshot(); assert.equal(result.optimisticEstimate.nodeTimings.size, 4); assert.equal(result.pessimisticEstimate.nodeTimings.size, 7); assert.ok(result.optimisticGraph, 'should have created optimistic graph'); diff --git a/lighthouse-core/test/gather/computed/metrics/interactive-test.js b/lighthouse-core/test/gather/computed/metrics/interactive-test.js index 32826f6e8571..390f9573f3cc 100644 --- a/lighthouse-core/test/gather/computed/metrics/interactive-test.js +++ b/lighthouse-core/test/gather/computed/metrics/interactive-test.js @@ -34,9 +34,11 @@ describe('Metrics: TTI', () => { const settings = {throttlingMethod: 'simulate'}; const result = await artifacts.requestInteractive({trace, devtoolsLog, settings}); - assert.equal(Math.round(result.timing), 4309); - assert.equal(Math.round(result.optimisticEstimate.timeInMs), 2451); - assert.equal(Math.round(result.pessimisticEstimate.timeInMs), 2752); + expect({ + timing: Math.round(result.timing), + optimistic: Math.round(result.optimisticEstimate.timeInMs), + pessimistic: Math.round(result.pessimisticEstimate.timeInMs), + }).toMatchSnapshot(); assert.equal(result.optimisticEstimate.nodeTimings.size, 19); assert.equal(result.pessimisticEstimate.nodeTimings.size, 79); assert.ok(result.optimisticGraph, 'should have created optimistic graph'); diff --git a/lighthouse-core/test/gather/computed/metrics/lantern-estimated-input-latency-test.js b/lighthouse-core/test/gather/computed/metrics/lantern-estimated-input-latency-test.js index c6b1391c9861..918448457ffc 100644 --- a/lighthouse-core/test/gather/computed/metrics/lantern-estimated-input-latency-test.js +++ b/lighthouse-core/test/gather/computed/metrics/lantern-estimated-input-latency-test.js @@ -6,7 +6,6 @@ 'use strict'; const Runner = require('../../../../runner'); -const assert = require('assert'); const trace = require('../../../fixtures/traces/progressive-app-m60.json'); const devtoolsLog = require('../../../fixtures/traces/progressive-app-m60.devtools.log.json'); @@ -20,8 +19,10 @@ describe('Metrics: Lantern EIL', () => { const data = {trace, devtoolsLog, settings}; const result = await artifacts.requestLanternEstimatedInputLatency(data); - assert.equal(Math.round(result.timing), 104); - assert.equal(Math.round(result.optimisticEstimate.timeInMs), 101); - assert.equal(Math.round(result.pessimisticEstimate.timeInMs), 158); + expect({ + timing: Math.round(result.timing), + optimistic: Math.round(result.optimisticEstimate.timeInMs), + pessimistic: Math.round(result.pessimisticEstimate.timeInMs), + }).toMatchSnapshot(); }); }); diff --git a/lighthouse-core/test/gather/computed/metrics/lantern-first-contentful-paint-test.js b/lighthouse-core/test/gather/computed/metrics/lantern-first-contentful-paint-test.js index 3e98a2bf5e0b..4bbe3222d69f 100644 --- a/lighthouse-core/test/gather/computed/metrics/lantern-first-contentful-paint-test.js +++ b/lighthouse-core/test/gather/computed/metrics/lantern-first-contentful-paint-test.js @@ -18,9 +18,11 @@ describe('Metrics: Lantern FCP', () => { const result = await artifacts.requestLanternFirstContentfulPaint({trace, devtoolsLog, settings: {}}); - assert.equal(Math.round(result.timing), 1038); - assert.equal(Math.round(result.optimisticEstimate.timeInMs), 611); - assert.equal(Math.round(result.pessimisticEstimate.timeInMs), 611); + expect({ + timing: Math.round(result.timing), + optimistic: Math.round(result.optimisticEstimate.timeInMs), + pessimistic: Math.round(result.pessimisticEstimate.timeInMs), + }).toMatchSnapshot(); assert.equal(result.optimisticEstimate.nodeTimings.size, 2); assert.equal(result.pessimisticEstimate.nodeTimings.size, 2); assert.ok(result.optimisticGraph, 'should have created optimistic graph'); diff --git a/lighthouse-core/test/gather/computed/metrics/lantern-first-cpu-idle-test.js b/lighthouse-core/test/gather/computed/metrics/lantern-first-cpu-idle-test.js index 5bd08faf6631..9a3837277c4e 100644 --- a/lighthouse-core/test/gather/computed/metrics/lantern-first-cpu-idle-test.js +++ b/lighthouse-core/test/gather/computed/metrics/lantern-first-cpu-idle-test.js @@ -17,9 +17,11 @@ describe('Metrics: Lantern TTFCPUI', () => { const artifacts = Runner.instantiateComputedArtifacts(); const result = await artifacts.requestLanternFirstCPUIdle({trace, devtoolsLog, settings: {}}); - assert.equal(Math.round(result.timing), 4309); - assert.equal(Math.round(result.optimisticEstimate.timeInMs), 2451); - assert.equal(Math.round(result.pessimisticEstimate.timeInMs), 2752); + expect({ + timing: Math.round(result.timing), + optimistic: Math.round(result.optimisticEstimate.timeInMs), + pessimistic: Math.round(result.pessimisticEstimate.timeInMs), + }).toMatchSnapshot(); assert.equal(result.optimisticEstimate.nodeTimings.size, 19); assert.equal(result.pessimisticEstimate.nodeTimings.size, 79); assert.ok(result.optimisticGraph, 'should have created optimistic graph'); diff --git a/lighthouse-core/test/gather/computed/metrics/lantern-first-meaningful-paint-test.js b/lighthouse-core/test/gather/computed/metrics/lantern-first-meaningful-paint-test.js index 7c39aaa91d43..72adf25b475c 100644 --- a/lighthouse-core/test/gather/computed/metrics/lantern-first-meaningful-paint-test.js +++ b/lighthouse-core/test/gather/computed/metrics/lantern-first-meaningful-paint-test.js @@ -18,9 +18,11 @@ describe('Metrics: Lantern FMP', () => { const result = await artifacts.requestLanternFirstMeaningfulPaint({trace, devtoolsLog, settings: {}}); - assert.equal(Math.round(result.timing), 1949); - assert.equal(Math.round(result.optimisticEstimate.timeInMs), 911); - assert.equal(Math.round(result.pessimisticEstimate.timeInMs), 1198); + expect({ + timing: Math.round(result.timing), + optimistic: Math.round(result.optimisticEstimate.timeInMs), + pessimistic: Math.round(result.pessimisticEstimate.timeInMs), + }).toMatchSnapshot(); assert.equal(result.optimisticEstimate.nodeTimings.size, 4); assert.equal(result.pessimisticEstimate.nodeTimings.size, 7); assert.ok(result.optimisticGraph, 'should have created optimistic graph'); diff --git a/lighthouse-core/test/gather/computed/metrics/lantern-interactive-test.js b/lighthouse-core/test/gather/computed/metrics/lantern-interactive-test.js index d9f271a9acb3..3385ed6d2d89 100644 --- a/lighthouse-core/test/gather/computed/metrics/lantern-interactive-test.js +++ b/lighthouse-core/test/gather/computed/metrics/lantern-interactive-test.js @@ -18,9 +18,11 @@ describe('Metrics: Lantern TTI', () => { const result = await artifacts.requestLanternInteractive({trace, devtoolsLog, settings: {}}); - assert.equal(Math.round(result.timing), 4309); - assert.equal(Math.round(result.optimisticEstimate.timeInMs), 2451); - assert.equal(Math.round(result.pessimisticEstimate.timeInMs), 2752); + expect({ + timing: Math.round(result.timing), + optimistic: Math.round(result.optimisticEstimate.timeInMs), + pessimistic: Math.round(result.pessimisticEstimate.timeInMs), + }).toMatchSnapshot(); assert.equal(result.optimisticEstimate.nodeTimings.size, 19); assert.equal(result.pessimisticEstimate.nodeTimings.size, 79); assert.ok(result.optimisticGraph, 'should have created optimistic graph'); diff --git a/lighthouse-core/test/gather/computed/metrics/lantern-speed-index-test.js b/lighthouse-core/test/gather/computed/metrics/lantern-speed-index-test.js index f94612ef6eb8..92f269c22605 100644 --- a/lighthouse-core/test/gather/computed/metrics/lantern-speed-index-test.js +++ b/lighthouse-core/test/gather/computed/metrics/lantern-speed-index-test.js @@ -6,7 +6,6 @@ 'use strict'; const Runner = require('../../../../runner'); -const assert = require('assert'); const trace = require('../../../fixtures/traces/progressive-app-m60.json'); const devtoolsLog = require('../../../fixtures/traces/progressive-app-m60.devtools.log.json'); @@ -17,8 +16,10 @@ describe('Metrics: Lantern Speed Index', () => { const artifacts = Runner.instantiateComputedArtifacts(); const result = await artifacts.requestLanternSpeedIndex({trace, devtoolsLog, settings: {}}); - assert.equal(Math.round(result.timing), 1461); - assert.equal(Math.round(result.optimisticEstimate.timeInMs), 605); - assert.equal(Math.round(result.pessimisticEstimate.timeInMs), 1330); + expect({ + timing: Math.round(result.timing), + optimistic: Math.round(result.optimisticEstimate.timeInMs), + pessimistic: Math.round(result.pessimisticEstimate.timeInMs), + }).toMatchSnapshot(); }); }); diff --git a/lighthouse-core/test/gather/computed/metrics/speed-index-test.js b/lighthouse-core/test/gather/computed/metrics/speed-index-test.js index ed8ea26843cf..f5b2bad88e70 100644 --- a/lighthouse-core/test/gather/computed/metrics/speed-index-test.js +++ b/lighthouse-core/test/gather/computed/metrics/speed-index-test.js @@ -19,9 +19,11 @@ describe('Metrics: Speed Index', () => { const settings = {throttlingMethod: 'simulate'}; const result = await artifacts.requestSpeedIndex({trace, devtoolsLog, settings}); - assert.equal(Math.round(result.timing), 1461); - assert.equal(Math.round(result.optimisticEstimate.timeInMs), 605); - assert.equal(Math.round(result.pessimisticEstimate.timeInMs), 1330); + expect({ + timing: Math.round(result.timing), + optimistic: Math.round(result.optimisticEstimate.timeInMs), + pessimistic: Math.round(result.pessimisticEstimate.timeInMs), + }).toMatchSnapshot(); }); it('should compute an observed value', async () => { diff --git a/lighthouse-core/test/lib/dependency-graph/simulator/dns-cache-test.js b/lighthouse-core/test/lib/dependency-graph/simulator/dns-cache-test.js new file mode 100644 index 000000000000..ec0765c5051c --- /dev/null +++ b/lighthouse-core/test/lib/dependency-graph/simulator/dns-cache-test.js @@ -0,0 +1,64 @@ +/** + * @license Copyright 2018 Google Inc. All Rights Reserved. + * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 + * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. + */ +'use strict'; + +const DNSCache = require('../../../../lib/dependency-graph/simulator/dns-cache'); +const MULTIPLIER = DNSCache.RTT_MULTIPLIER; + +/* eslint-env jest */ + +describe('DependencyGraph/Simulator/DNSCache', () => { + let dns; + let request; + + beforeEach(() => { + dns = new DNSCache({rtt: 100}); + request = {parsedURL: {host: 'example.com'}}; + }); + + describe('.getTimeUntilResolution', () => { + it('should return the RTT multiplied', () => { + const resolutionTime = dns.getTimeUntilResolution(request); + expect(resolutionTime).toBe(100 * MULTIPLIER); + }); + + it('should return time with requestedAt', () => { + const resolutionTime = dns.getTimeUntilResolution(request, {requestedAt: 1500}); + expect(resolutionTime).toBe(100 * MULTIPLIER); + }); + + it('should not cache by default', () => { + dns.getTimeUntilResolution(request, {requestedAt: 0}); + const resolutionTime = dns.getTimeUntilResolution(request, {requestedAt: 1000}); + expect(resolutionTime).toBe(100 * MULTIPLIER); + }); + + it('should cache when told', () => { + dns.getTimeUntilResolution(request, {requestedAt: 0, shouldUpdateCache: true}); + const resolutionTime = dns.getTimeUntilResolution(request, {requestedAt: 1000}); + expect(resolutionTime).toBe(0); + }); + + it('should cache by domain', () => { + dns.getTimeUntilResolution(request, {requestedAt: 0, shouldUpdateCache: true}); + const otherRequest = {parsedURL: {host: 'other-example.com'}}; + const resolutionTime = dns.getTimeUntilResolution(otherRequest, {requestedAt: 1000}); + expect(resolutionTime).toBe(100 * MULTIPLIER); + }); + + it('should not update cache with later times', () => { + dns.getTimeUntilResolution(request, {requestedAt: 1000, shouldUpdateCache: true}); + dns.getTimeUntilResolution(request, {requestedAt: 1500, shouldUpdateCache: true}); + dns.getTimeUntilResolution(request, {requestedAt: 500, shouldUpdateCache: true}); + dns.getTimeUntilResolution(request, {requestedAt: 5000, shouldUpdateCache: true}); + + expect(dns.getTimeUntilResolution(request, {requestedAt: 0})).toBe(100 * MULTIPLIER); + expect(dns.getTimeUntilResolution(request, {requestedAt: 550})).toBe(100 * MULTIPLIER - 50); + expect(dns.getTimeUntilResolution(request, {requestedAt: 1000})).toBe(0); + expect(dns.getTimeUntilResolution(request, {requestedAt: 2000})).toBe(0); + }); + }); +}); diff --git a/lighthouse-core/test/lib/dependency-graph/simulator/simulator-test.js b/lighthouse-core/test/lib/dependency-graph/simulator/simulator-test.js index caa7ae143559..ac9bec7db2e1 100644 --- a/lighthouse-core/test/lib/dependency-graph/simulator/simulator-test.js +++ b/lighthouse-core/test/lib/dependency-graph/simulator/simulator-test.js @@ -8,6 +8,7 @@ const NetworkNode = require('../../../../lib/dependency-graph/network-node'); const CpuNode = require('../../../../lib/dependency-graph/cpu-node'); const Simulator = require('../../../../lib/dependency-graph/simulator/simulator'); +const DNSCache = require('../../../../lib/dependency-graph/simulator/dns-cache'); const assert = require('assert'); let nextRequestId = 1; @@ -21,7 +22,7 @@ function request(opts) { requestId: opts.requestId || nextRequestId++, url, transferSize: opts.transferSize || 1000, - parsedURL: {scheme, securityOrigin: url}, + parsedURL: {scheme, host: 'example.com', securityOrigin: url}, timing: opts.timing, }, opts); } @@ -35,6 +36,18 @@ function cpuTask({tid, ts, duration}) { /* eslint-env jest */ describe('DependencyGraph/Simulator', () => { + // Insulate the simulator tests from DNS multiplier changes + let originalDNSMultiplier; + + beforeAll(() => { + originalDNSMultiplier = DNSCache.RTT_MULTIPLIER; + DNSCache.RTT_MULTIPLIER = 1; + }); + + afterAll(() => { + DNSCache.RTT_MULTIPLIER = originalDNSMultiplier; + }); + describe('.simulate', () => { const serverResponseTimeByOrigin = new Map([['http://example.com', 500]]); @@ -50,9 +63,9 @@ describe('DependencyGraph/Simulator', () => { const rootNode = new NetworkNode(request({})); const simulator = new Simulator({serverResponseTimeByOrigin}); const result = simulator.simulate(rootNode); - // should be 2 RTTs and 500ms for the server response time - assert.equal(result.timeInMs, 300 + 500); - assertNodeTiming(result, rootNode, {startTime: 0, endTime: 800}); + // should be 3 RTTs and 500ms for the server response time + assert.equal(result.timeInMs, 450 + 500); + assertNodeTiming(result, rootNode, {startTime: 0, endTime: 950}); }); it('should simulate basic mixed graphs', () => { @@ -65,10 +78,10 @@ describe('DependencyGraph/Simulator', () => { cpuSlowdownMultiplier: 5, }); const result = simulator.simulate(rootNode); - // should be 2 RTTs and 500ms for the server response time + 200 CPU - assert.equal(result.timeInMs, 300 + 500 + 200); - assertNodeTiming(result, rootNode, {startTime: 0, endTime: 800}); - assertNodeTiming(result, cpuNode, {startTime: 800, endTime: 1000}); + // should be 3 RTTs and 500ms for the server response time + 200 CPU + assert.equal(result.timeInMs, 450 + 500 + 200); + assertNodeTiming(result, rootNode, {startTime: 0, endTime: 950}); + assertNodeTiming(result, cpuNode, {startTime: 950, endTime: 1150}); }); it('should simulate basic network waterfall graphs', () => { @@ -83,12 +96,12 @@ describe('DependencyGraph/Simulator', () => { const simulator = new Simulator({serverResponseTimeByOrigin}); const result = simulator.simulate(nodeA); - // should be 800ms each for A, B, C, D - assert.equal(result.timeInMs, 3200); - assertNodeTiming(result, nodeA, {startTime: 0, endTime: 800}); - assertNodeTiming(result, nodeB, {startTime: 800, endTime: 1600}); - assertNodeTiming(result, nodeC, {startTime: 1600, endTime: 2400}); - assertNodeTiming(result, nodeD, {startTime: 2400, endTime: 3200}); + // should be 950ms for A, 800ms each for B, C, D + assert.equal(result.timeInMs, 3350); + assertNodeTiming(result, nodeA, {startTime: 0, endTime: 950}); + assertNodeTiming(result, nodeB, {startTime: 950, endTime: 1750}); + assertNodeTiming(result, nodeC, {startTime: 1750, endTime: 2550}); + assertNodeTiming(result, nodeD, {startTime: 2550, endTime: 3350}); }); it('should simulate cached network graphs', () => { @@ -120,11 +133,11 @@ describe('DependencyGraph/Simulator', () => { }); const result = simulator.simulate(nodeA); // should be 800ms A, then 1000 ms total for B, C, D in serial - assert.equal(result.timeInMs, 1800); - assertNodeTiming(result, nodeA, {startTime: 0, endTime: 800}); - assertNodeTiming(result, nodeB, {startTime: 800, endTime: 900}); - assertNodeTiming(result, nodeC, {startTime: 900, endTime: 1500}); - assertNodeTiming(result, nodeD, {startTime: 1500, endTime: 1800}); + assert.equal(result.timeInMs, 1950); + assertNodeTiming(result, nodeA, {startTime: 0, endTime: 950}); + assertNodeTiming(result, nodeB, {startTime: 950, endTime: 1050}); + assertNodeTiming(result, nodeC, {startTime: 1050, endTime: 1650}); + assertNodeTiming(result, nodeD, {startTime: 1650, endTime: 1950}); }); it('should simulate basic network waterfall graphs with CPU', () => { @@ -146,8 +159,8 @@ describe('DependencyGraph/Simulator', () => { cpuSlowdownMultiplier: 5, }); const result = simulator.simulate(nodeA); - // should be 800ms each for A, B, C, D, with F finishing 400 ms after D - assert.equal(result.timeInMs, 3600); + // should be 950ms for A, 800ms each for B, C, D, with F finishing 400 ms after D + assert.equal(result.timeInMs, 3750); }); it('should simulate basic parallel requests', () => { @@ -162,8 +175,8 @@ describe('DependencyGraph/Simulator', () => { const simulator = new Simulator({serverResponseTimeByOrigin}); const result = simulator.simulate(nodeA); - // should be 800ms for A and 950ms for C (2 round trips of downloading) - assert.equal(result.timeInMs, 800 + 950); + // should be 950ms for A and 950ms for C (2 round trips of downloading, but no DNS) + assert.equal(result.timeInMs, 950 + 950); }); it('should not reuse connections', () => { @@ -178,24 +191,31 @@ describe('DependencyGraph/Simulator', () => { const simulator = new Simulator({serverResponseTimeByOrigin}); const result = simulator.simulate(nodeA); - // should be 800ms for A and 650ms for the next 3 - assert.equal(result.timeInMs, 800 + 650 * 3); + // should be 950ms for A and 650ms for the next 3 + assert.equal(result.timeInMs, 950 + 650 * 3); }); it('should adjust throughput based on number of requests', () => { const nodeA = new NetworkNode(request({})); const nodeB = new NetworkNode(request({})); - const nodeC = new NetworkNode(request({transferSize: 15000})); + const nodeC = new NetworkNode(request({transferSize: 14000})); const nodeD = new NetworkNode(request({})); nodeA.addDependent(nodeB); nodeA.addDependent(nodeC); nodeA.addDependent(nodeD); - const simulator = new Simulator({serverResponseTimeByOrigin}); + // 80 kbps while all 3 download at 150ms/RT = ~1460 bytes/RT + // 240 kbps while the last one finishes at 150ms/RT = ~4380 bytes/RT + // ~14000 bytes = 5 RTs + // 1 RT 80 kbps b/c its shared + // 1 RT 80 kbps b/c it needs to grow congestion window from being shared + // 1 RT 160 kbps b/c TCP + // 2 RT 240 kbps b/c throughput cap + const simulator = new Simulator({serverResponseTimeByOrigin, throughput: 240000}); const result = simulator.simulate(nodeA); - // should be 800ms for A and 950ms for C (2 round trips of downloading) - assert.equal(result.timeInMs, 800 + 950); + // should be 950ms for A and 1400ms for C (5 round trips of downloading) + assert.equal(result.timeInMs, 950 + (150 + 750 + 500)); }); it('should simulate two graphs in a row', () => { @@ -211,8 +231,8 @@ describe('DependencyGraph/Simulator', () => { nodeA.addDependent(nodeD); const resultA = simulator.simulate(nodeA); - // should be 800ms for A and 950ms for C (2 round trips of downloading) - assert.equal(resultA.timeInMs, 800 + 950); + // should be 950ms for A and 950ms for C (2 round trips of downloading, no DNS) + assert.equal(resultA.timeInMs, 950 + 950); const nodeE = new NetworkNode(request({})); const nodeF = new NetworkNode(request({})); @@ -222,8 +242,8 @@ describe('DependencyGraph/Simulator', () => { nodeE.addDependent(nodeG); const resultB = simulator.simulate(nodeE); - // should be 800ms for E and 800ms for F/G - assert.equal(resultB.timeInMs, 800 + 800); + // should be 950ms for E and 800ms for F/G + assert.equal(resultB.timeInMs, 950 + 800); }); it('should throw (not hang) on graphs with cycles', () => {