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index.js
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/**
* Copyright (c) 2014-present, Facebook, Inc. All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @flow
*/
'use strict';
import type {Config} from 'types/Config';
import type {Environment} from 'types/Environment';
import type {TestResult} from 'types/TestResult';
import type Runtime from '../../jest-runtime/src';
const JasmineReporter = require('./reporter');
const jasmineAsync = require('./jasmine-async');
const snapshot = require('jest-snapshot');
const fs = require('graceful-fs');
const path = require('path');
const vm = require('vm');
const CALL_PRINT_LIMIT = 3;
const LAST_CALL_PRINT_LIMIT = 1;
const JASMINE_PATH = require.resolve('../vendor/jasmine-2.4.1.js');
const JASMINE_CHECK_PATH = require.resolve('./jasmine-check');
const jasmineScript = new vm.Script(fs.readFileSync(JASMINE_PATH, 'utf8'), {
displayErrors: true,
filename: JASMINE_PATH,
});
function isSpyLike(test) {
return test.calls && test.calls.all !== undefined;
}
function isMockLike(test) {
return test.mock !== undefined;
}
function getActualCalls(reporter, calls, limit) {
const count = calls.length - limit;
return (
`\nActual call${calls.length === 1 ? '' : 's'}:\n` +
calls.slice(-limit).map(
call => reporter.getFormatter().prettyPrint(call),
).reverse().join(',\n') +
(count > 0
? `\nand ${count} other call${count === 1 ? '' : 's'}.` : ''
)
);
}
function jasmine2(
config: Config,
environment: Environment,
runtime: Runtime,
testPath: string,
): Promise<TestResult> {
const reporter = new JasmineReporter(config, environment, testPath);
environment.runScript(jasmineScript);
const requireJasmine = environment.global.jasmineRequire;
const jasmine = requireJasmine.core(requireJasmine);
const jasmineBuildExpectationResult = jasmine.buildExpectationResult;
// https://github.com/facebook/jest/issues/429
jasmine.buildExpectationResult = function(options) {
if (!options.passed) {
function shallowCopy(object) {
if (
typeof object !== 'object' ||
object === null || (
environment.global.Node &&
object instanceof environment.global.Node &&
object.nodeType > 0
)
) {
return object;
}
return jasmine.util.clone(object);
}
options.expected = shallowCopy(options.expected);
options.actual = shallowCopy(options.actual);
}
return jasmineBuildExpectationResult.apply(jasmine, arguments);
};
const env = jasmine.getEnv();
const jasmineInterface = requireJasmine.interface(jasmine, env);
Object.assign(environment.global, jasmineInterface);
env.addReporter(jasmineInterface.jsApiReporter);
jasmineAsync.install(environment.global);
environment.global.test = environment.global.it;
if (config.setupTestFrameworkScriptFile) {
runtime.requireModule(config.setupTestFrameworkScriptFile);
}
if (!jasmine || !env) {
throw new Error('jasmine2 could not be initialized by Jest');
}
runtime.setMock(
'',
'jest-check',
() => {
const jasmineCheck = runtime.requireInternalModule(JASMINE_CHECK_PATH);
return jasmineCheck(environment.global, config.testcheckOptions);
},
{virtual: true},
);
env.beforeEach(() => {
jasmine.addMatchers({
toMatchSnapshot: snapshot.matcher(
testPath,
config,
snapshotState,
),
});
jasmine.addMatchers({
lastCalledWith: util => ({
compare(actual) {
const isSpy = isSpyLike(actual);
if (!isSpy && !isMockLike(actual)) {
throw Error(
'lastCalledWith() should be used on a mock function or ' +
'a jasmine spy.',
);
}
const calls = isSpy
? actual.calls.all().map(x => x.args)
: actual.mock.calls;
const expected = Array.prototype.slice.call(arguments, 1);
const pass = util.equals(calls[calls.length - 1], expected);
if (!pass) {
return {
pass,
// $FlowFixMe - get/set properties not yet supported
get message() {
return (
`Wasn't last called with the expected values.\n` +
'Expected call:\n' +
reporter.getFormatter().prettyPrint(expected) +
getActualCalls(reporter, calls, LAST_CALL_PRINT_LIMIT)
);
},
};
}
return {
pass,
// $FlowFixMe - get/set properties not yet supported
get message() {
return (
`Shouldn't have been last called with\n` +
reporter.getFormatter().prettyPrint(expected)
);
},
};
},
}),
toBeCalledWith: util => ({
compare(actual) {
const isSpy = isSpyLike(actual);
if (!isMockLike(actual) && !isSpy) {
throw Error(
'toBeCalledWith() should be used on a mock function or ' +
'a jasmine spy.',
);
}
const calls = isSpy
? actual.calls.all().map(x => x.args)
: actual.mock.calls;
const expected = Array.prototype.slice.call(arguments, 1);
const pass = calls.some(call => util.equals(call, expected));
if (!pass) {
return {
pass,
// $FlowFixMe - get/set properties not yet supported
get message() {
return (
'Was not called with the expected values.\n' +
'Expected call:\n' +
reporter.getFormatter().prettyPrint(expected) +
getActualCalls(reporter, calls, CALL_PRINT_LIMIT)
);
},
};
}
return {
pass,
// $FlowFixMe - get/set properties not yet supported
get message() {
return (
`Shouldn't have been called with\n` +
reporter.getFormatter().prettyPrint(expected)
);
},
};
},
}),
});
if (config.resetModules) {
runtime.resetModules();
}
});
const snapshotState = snapshot.getSnapshotState(jasmine, testPath);
env.addReporter(reporter);
// `jest-matchers` should be required inside test environment (vm).
// Otherwise if they throw, the `Error` class will differ from the `Error`
// class of the test and `error instanceof Error` will return `false`.
runtime.requireInternalModule(
path.resolve(__dirname, './extendJasmineExpect.js'),
);
if (config.timers === 'fake') {
environment.fakeTimers.useFakeTimers();
}
runtime.requireModule(testPath);
env.execute();
return reporter.getResults().then(results => {
const currentSnapshot = snapshotState.snapshot;
const updateSnapshot = config.updateSnapshot;
const uncheckedCount = currentSnapshot.getUncheckedCount();
if (updateSnapshot) {
currentSnapshot.removeUncheckedKeys();
}
const status = currentSnapshot.save(updateSnapshot);
results.snapshot.fileDeleted = status.deleted;
results.snapshot.added = snapshotState.added;
results.snapshot.matched = snapshotState.matched;
results.snapshot.unmatched = snapshotState.unmatched;
results.snapshot.updated = snapshotState.updated;
results.snapshot.unchecked = !status.deleted ? uncheckedCount : 0;
return results;
});
}
module.exports = jasmine2;