diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/for-of/dstr/let-ary-ptrn-elem-ary-rest-iter.js')
-rw-r--r-- | js/src/tests/test262/language/statements/for-of/dstr/let-ary-ptrn-elem-ary-rest-iter.js | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/for-of/dstr/let-ary-ptrn-elem-ary-rest-iter.js b/js/src/tests/test262/language/statements/for-of/dstr/let-ary-ptrn-elem-ary-rest-iter.js new file mode 100644 index 0000000000..8fc2c4e9ad --- /dev/null +++ b/js/src/tests/test262/language/statements/for-of/dstr/let-ary-ptrn-elem-ary-rest-iter.js @@ -0,0 +1,70 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-elem-ary-rest-iter.case +// - src/dstr-binding/default/for-of-let.template +/*--- +description: BindingElement with array binding pattern and initializer is not used (for-of statement) +esid: sec-for-in-and-for-of-statements-runtime-semantics-labelledevaluation +features: [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 + + BindingElement : BindingPatternInitializer opt + + 1. If iteratorRecord.[[done]] is false, then + a. Let next be IteratorStep(iteratorRecord.[[iterator]]). + [...] + e. Else, + i. Let v be IteratorValue(next). + [...] + 4. Return the result of performing BindingInitialization of BindingPattern + with v and environment as the arguments. +---*/ +var values = [2, 1, 3]; +var initCount = 0; + +var iterCount = 0; + +for (let [[...x] = function() { initCount += 1; }()] of [[values]]) { + assert(Array.isArray(x)); + assert.sameValue(x[0], 2); + assert.sameValue(x[1], 1); + assert.sameValue(x[2], 3); + assert.sameValue(x.length, 3); + assert.notSameValue(x, values); + assert.sameValue(initCount, 0); + + iterCount += 1; +} + +assert.sameValue(iterCount, 1, 'Iteration occurred as expected'); + +reportCompare(0, 0); |