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Diffstat (limited to 'js/src/tests/test262/built-ins/Promise/race/invoke-then.js')
-rw-r--r-- | js/src/tests/test262/built-ins/Promise/race/invoke-then.js | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/Promise/race/invoke-then.js b/js/src/tests/test262/built-ins/Promise/race/invoke-then.js new file mode 100644 index 0000000000..3f1ecab814 --- /dev/null +++ b/js/src/tests/test262/built-ins/Promise/race/invoke-then.js @@ -0,0 +1,57 @@ +// Copyright (C) 2015 the V8 project authors. All rights reserved. +// This code is governed by the BSD license found in the LICENSE file. + +/*--- +description: > + Invocation of the instance's `then` method +es6id: 25.4.4.3 +info: | + 11. Let result be PerformPromiseRace(iteratorRecord, C, promiseCapability). + + [...] + + 25.4.4.3.1 Runtime Semantics: PerformPromiseRace + + 1. Repeat + [...] + j. Let result be Invoke(nextPromise, "then", + «promiseCapability.[[Resolve]], promiseCapability.[[Reject]]»). + k. ReturnIfAbrupt(result). +---*/ + +var p1 = new Promise(function() {}); +var p2 = new Promise(function() {}); +var p3 = new Promise(function() {}); +var callCount = 0; +var currentThis = p1; +var nextThis = p2; +var afterNextThis = p3; + +p1.then = p2.then = p3.then = function(a, b) { + assert.sameValue(typeof a, 'function', 'type of first argument'); + assert.sameValue( + a.length, + 1, + 'ES6 25.4.1.3.2: The length property of a promise resolve function is 1.' + ); + assert.sameValue(typeof b, 'function', 'type of second argument'); + assert.sameValue( + b.length, + 1, + 'ES6 25.4.1.3.1: The length property of a promise reject function is 1.' + ); + assert.sameValue(arguments.length, 2, '`then` invoked with two arguments'); + assert.sameValue(this, currentThis, '`this` value'); + + currentThis = nextThis; + nextThis = afterNextThis; + afterNextThis = null; + + callCount += 1; +}; + +Promise.race([p1, p2, p3]); + +assert.sameValue(callCount, 3, '`then` invoked once for every iterated value'); + +reportCompare(0, 0); |