summaryrefslogtreecommitdiffstats
path: root/js/src/tests/test262/language/statements/generators/dstr/dflt-ary-ptrn-rest-id-exhausted.js
diff options
context:
space:
mode:
Diffstat (limited to 'js/src/tests/test262/language/statements/generators/dstr/dflt-ary-ptrn-rest-id-exhausted.js')
-rw-r--r--js/src/tests/test262/language/statements/generators/dstr/dflt-ary-ptrn-rest-id-exhausted.js61
1 files changed, 61 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/generators/dstr/dflt-ary-ptrn-rest-id-exhausted.js b/js/src/tests/test262/language/statements/generators/dstr/dflt-ary-ptrn-rest-id-exhausted.js
new file mode 100644
index 0000000000..8daf7bb3cf
--- /dev/null
+++ b/js/src/tests/test262/language/statements/generators/dstr/dflt-ary-ptrn-rest-id-exhausted.js
@@ -0,0 +1,61 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-ptrn-rest-id-exhausted.case
+// - src/dstr-binding/default/gen-func-decl-dflt.template
+/*---
+description: RestElement applied to an exhausted iterator (generator function declaration (default parameter))
+esid: sec-generator-function-definitions-runtime-semantics-instantiatefunctionobject
+features: [Symbol.iterator, generators, destructuring-binding, default-parameters]
+flags: [generated]
+info: |
+ GeneratorDeclaration : function * ( FormalParameters ) { GeneratorBody }
+
+ [...]
+ 2. Let F be GeneratorFunctionCreate(Normal, FormalParameters,
+ GeneratorBody, scope, strict).
+ [...]
+
+ 9.2.1 [[Call]] ( thisArgument, argumentsList)
+
+ [...]
+ 7. Let result be OrdinaryCallEvaluateBody(F, argumentsList).
+ [...]
+
+ 9.2.1.3 OrdinaryCallEvaluateBody ( F, argumentsList )
+
+ 1. Let status be FunctionDeclarationInstantiation(F, argumentsList).
+ [...]
+
+ 9.2.12 FunctionDeclarationInstantiation(func, argumentsList)
+
+ [...]
+ 23. Let iteratorRecord be Record {[[iterator]]:
+ CreateListIterator(argumentsList), [[done]]: false}.
+ 24. If hasDuplicates is true, then
+ [...]
+ 25. Else,
+ b. Let formalStatus be IteratorBindingInitialization for formals with
+ iteratorRecord and env as arguments.
+ [...]
+
+ 13.3.3.6 Runtime Semantics: IteratorBindingInitialization
+ BindingRestElement : ... BindingIdentifier
+ 1. Let lhs be ResolveBinding(StringValue of BindingIdentifier,
+ environment).
+ 2. ReturnIfAbrupt(lhs). 3. Let A be ArrayCreate(0). 4. Let n=0. 5. Repeat,
+ [...]
+ b. If iteratorRecord.[[done]] is true, then
+ i. If environment is undefined, return PutValue(lhs, A).
+ ii. Return InitializeReferencedBinding(lhs, A).
+
+---*/
+
+var callCount = 0;
+function* f([, , ...x] = [1, 2]) {
+ assert(Array.isArray(x));
+ assert.sameValue(x.length, 0);
+ callCount = callCount + 1;
+};
+f().next();
+assert.sameValue(callCount, 1, 'generator function invoked exactly once');
+
+reportCompare(0, 0);