1 files changed, 72 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/generators/dstr/ary-init-iter-close.js b/js/src/tests/test262/language/statements/generators/dstr/ary-init-iter-close.js
new file mode 100644
index 0000000000..070211dc51
--- /dev/null
+++ b/js/src/tests/test262/language/statements/generators/dstr/ary-init-iter-close.js
@@ -0,0 +1,72 @@
+// This file was procedurally generated from the following sources:
+// - src/dstr-binding/ary-init-iter-close.case
+// - src/dstr-binding/default/gen-func-decl.template
+/*---
+description: Iterator is closed when not exhausted by pattern evaluation (generator function declaration)
+esid: sec-generator-function-definitions-runtime-semantics-instantiatefunctionobject
+features: [Symbol.iterator, generators, destructuring-binding]
+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.
+    [...]
+
+    13.3.3.5 Runtime Semantics: BindingInitialization
+
+    BindingPattern : ArrayBindingPattern
+
+    [...]
+    4. If iteratorRecord.[[done]] is false, return ? IteratorClose(iterator,
+       result).
+    [...]
+
+---*/
+var doneCallCount = 0;
+var iter = {};
+iter[Symbol.iterator] = function() {
+  return {
+    next: function() {
+      return { value: null, done: false };
+    },
+    return: function() {
+      doneCallCount += 1;
+      return {};
+    }
+  };
+};
+
+var callCount = 0;
+function* f([x]) {
+  assert.sameValue(doneCallCount, 1);
+  callCount = callCount + 1;
+};
+f(iter).next();
+assert.sameValue(callCount, 1, 'generator function invoked exactly once');
+
+reportCompare(0, 0);