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Diffstat (limited to 'js/src/tests/test262/language/statements/for-of/dstr/let-ary-ptrn-rest-ary-empty.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for-of/dstr/let-ary-ptrn-rest-ary-empty.js | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-of/dstr/let-ary-ptrn-rest-ary-empty.js b/js/src/tests/test262/language/statements/for-of/dstr/let-ary-ptrn-rest-ary-empty.js new file mode 100644 index 0000000000..dea5af639f --- /dev/null +++ b/js/src/tests/test262/language/statements/for-of/dstr/let-ary-ptrn-rest-ary-empty.js @@ -0,0 +1,73 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-rest-ary-empty.case +// - src/dstr-binding/default/for-of-let.template +/*--- +description: Rest element containing an "empty" array pattern (for-of statement) +esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation +features: [generators, destructuring-binding] +flags: [generated] +info: | + IterationStatement : + for ( ForDeclaration of AssignmentExpression ) Statement + + [...] + 3. Return ForIn/OfBodyEvaluation(ForDeclaration, Statement, keyResult, + lexicalBinding, labelSet). + + 13.7.5.13 Runtime Semantics: ForIn/OfBodyEvaluation + + [...] + 3. Let destructuring be IsDestructuring of lhs. + [...] + 5. Repeat + [...] + h. If destructuring is false, then + [...] + i. Else + i. If lhsKind is assignment, then + [...] + ii. Else if lhsKind is varBinding, then + [...] + iii. Else, + 1. Assert: lhsKind is lexicalBinding. + 2. Assert: lhs is a ForDeclaration. + 3. Let status be the result of performing BindingInitialization + for lhs passing nextValue and iterationEnv as arguments. + [...] + + 13.3.3.6 Runtime Semantics: IteratorBindingInitialization + + BindingRestElement : ... BindingPattern + + 1. Let A be ArrayCreate(0). + [...] + 3. Repeat + [...] + b. If iteratorRecord.[[done]] is true, then + i. Return the result of performing BindingInitialization of + BindingPattern with A and environment as the arguments. + [...] + + 13.3.3.6 Runtime Semantics: IteratorBindingInitialization + + ArrayBindingPattern : [ ] + + 1. Return NormalCompletion(empty). + +---*/ +var iterations = 0; +var iter = function*() { + iterations += 1; +}(); + +var iterCount = 0; + +for (let [...[]] of [iter]) { + assert.sameValue(iterations, 1); + + iterCount += 1; +} + +assert.sameValue(iterCount, 1, 'Iteration occurred as expected'); + +reportCompare(0, 0); |