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Diffstat (limited to 'test/language/statements/let/dstr-ary-ptrn-elem-ary-rest-init.js')
-rw-r--r-- | test/language/statements/let/dstr-ary-ptrn-elem-ary-rest-init.js | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/test/language/statements/let/dstr-ary-ptrn-elem-ary-rest-init.js b/test/language/statements/let/dstr-ary-ptrn-elem-ary-rest-init.js new file mode 100644 index 000000000..18c6533a6 --- /dev/null +++ b/test/language/statements/let/dstr-ary-ptrn-elem-ary-rest-init.js @@ -0,0 +1,41 @@ +// This file was procedurally generated from the following sources: +// - src/dstr-binding/ary-ptrn-elem-ary-rest-init.case +// - src/dstr-binding/default/let-stmt.template +/*--- +description: BindingElement with array binding pattern and initializer is used (`let` statement) +esid: sec-let-and-const-declarations-runtime-semantics-evaluation +es6id: 13.3.1.4 +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 + + BindingElement : BindingPatternInitializer opt + + [...] + 2. If iteratorRecord.[[done]] is true, let v be undefined. + 3. If Initializer is present and v is undefined, then + a. Let defaultValue be the result of evaluating Initializer. + b. Let v be ? GetValue(defaultValue). + 4. Return the result of performing BindingInitialization of BindingPattern + with v and environment as the arguments. +---*/ +var values = [2, 1, 3]; + +let [[...x] = 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); |