diff options
Diffstat (limited to 'js/src/tests/test262/language/statements/let/dstr/ary-ptrn-rest-id-elision.js')
-rw-r--r-- | js/src/tests/test262/language/statements/let/dstr/ary-ptrn-rest-id-elision.js | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/let/dstr/ary-ptrn-rest-id-elision.js b/js/src/tests/test262/language/statements/let/dstr/ary-ptrn-rest-id-elision.js new file mode 100644 index 0000000000..7c4b92ee9e --- /dev/null +++ b/js/src/tests/test262/language/statements/let/dstr/ary-ptrn-rest-id-elision.js @@ -0,0 +1,40 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-rest-id-elision.case +// - src/dstr-binding/default/let-stmt.template +/*--- +description: Rest element following elision elements (`let` statement) +esid: sec-let-and-const-declarations-runtime-semantics-evaluation +features: [destructuring-binding] +flags: [generated] +info: | + LexicalBinding : BindingPattern Initializer + + 1. Let rhs be the result of evaluating Initializer. + 2. Let value be GetValue(rhs). + 3. ReturnIfAbrupt(value). + 4. Let env be the running execution context's LexicalEnvironment. + 5. Return the result of performing BindingInitialization for BindingPattern + using value and env as the arguments. + + 13.3.3.6 Runtime Semantics: IteratorBindingInitialization + ArrayBindingPattern : [ Elisionopt BindingRestElement ] + 1. If Elision is present, then + a. Let status be the result of performing + IteratorDestructuringAssignmentEvaluation of Elision with + iteratorRecord as the argument. + b. ReturnIfAbrupt(status). + 2. Return the result of performing IteratorBindingInitialization for + BindingRestElement with iteratorRecord and environment as arguments. +---*/ +var values = [1, 2, 3, 4, 5]; + +let [ , , ...x] = values; + +assert(Array.isArray(x)); +assert.sameValue(x.length, 3); +assert.sameValue(x[0], 3); +assert.sameValue(x[1], 4); +assert.sameValue(x[2], 5); +assert.notSameValue(x, values); + +reportCompare(0, 0); |