add log capture and reporting in tests

examples/events.js

@@ -37,7 +37,7 @@ Example.events = function() {
 
     // an example of using composite events on the world
     Events.on(world, 'afterAdd', function(event) {
-        console.log('added to world:', event.object);
+        // do something with event.object
     });
 
     // an example of using beforeUpdate event on an engine

test/ExampleWorker.js

@@ -9,7 +9,7 @@ const stubBrowserFeatures = M => {
   M.Render.run = M.Render.lookAt = noop;
   M.Runner.create = M.Runner.run = noop;
   M.MouseConstraint.create = M.Mouse.create = noop;
-  M.Common.log = M.Common.info = M.Common.warn = noop;
+  M.Common.info = M.Common.warn = M.Common.log;
   return M;
 };
 
@@ -24,16 +24,19 @@ const { engineCapture } = require('./TestTools');
 const MatterDev = stubBrowserFeatures(require('../src/module/main'));
 const MatterBuild = stubBrowserFeatures(require('../build/matter'));
 const Example = require('../examples/index');
-const decomp = require('poly-decomp');
 
 const runExample = options => {
   const Matter = options.useDev ? MatterDev : MatterBuild;
   const consoleOriginal = global.console;
+  const logs = [];
 
-  global.console = { log: () => {} };
   global.document = global.window = { addEventListener: () => {} };
-  global.decomp = decomp;
   global.Matter = Matter;
+  global.console = { 
+    log: (...args) => {
+      logs.push(args.join(' '));
+    }
+  };
 
   reset(Matter);
 
@@ -79,13 +82,13 @@ const runExample = options => {
   global.console = consoleOriginal;
   global.window = undefined;
   global.document = undefined;
-  global.decomp = undefined;
   global.Matter = undefined;
 
   return {
     name: options.name,
     duration: totalDuration,
     overlap: overlapTotal / (overlapCount || 1),
+    logs,
     ...engineCapture(engine)
   };
 };

test/Examples.spec.js

@@ -3,7 +3,12 @@
 
 jest.setTimeout(30 * 1000);
 
-const { comparisonReport, toMatchExtrinsics, toMatchIntrinsics } = require('./TestTools');
+const { 
+    comparisonReport, 
+    logReport, 
+    toMatchExtrinsics, 
+    toMatchIntrinsics 
+} = require('./TestTools');
 
 const Example = require('../examples/index');
 const MatterBuild = require('../build/matter');
@@ -47,7 +52,11 @@ afterAll(async () => {
     // Report experimental capture comparison.
     const dev = await capturesDev;
     const build = await capturesBuild;
-    console.log(comparisonReport(dev, build, MatterBuild.version, saveComparison));
+
+    console.log(
+        logReport(dev) + '\n'
+        + comparisonReport(dev, build, MatterBuild.version, saveComparison)
+    );
 });
 
 describe(`Integration checks (${examples.length})`, () => {

test/TestTools.js

@@ -202,6 +202,25 @@ const equals = (a, b) => {
     return true;
 };
 
+const logReport = captures => {
+    let report = '';
+
+    for (const capture of Object.values(captures)) {
+        if (!capture.logs.length) {
+            continue;
+        }
+
+        report += `  ${capture.name}\n`;
+
+        for (const log of capture.logs) {
+            report += `    ${log}\n`;
+        }
+    }
+
+    return report ? `Output logs on last run\n\n${report}`
+        : 'Output logs on last run\n\n  None\n';
+};
+
 const comparisonReport = (capturesDev, capturesBuild, buildVersion, save) => {
     const similaritys = captureSimilarityExtrinsic(capturesDev, capturesBuild);
     const similarityEntries = Object.entries(similaritys);
@@ -284,6 +303,6 @@ const comparisonReport = (capturesDev, capturesBuild, buildVersion, save) => {
 };
 
 module.exports = {
-    engineCapture, comparisonReport,
+    engineCapture, comparisonReport, logReport,
     toMatchExtrinsics, toMatchIntrinsics
 };