1 files changed, 63 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/generators/yield-identifier-spread-non-strict.js b/js/src/tests/test262/language/statements/generators/yield-identifier-spread-non-strict.js
new file mode 100644
index 0000000000..824ea2f763
--- /dev/null
+++ b/js/src/tests/test262/language/statements/generators/yield-identifier-spread-non-strict.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/generators/yield-identifier-spread-non-strict.case
+// - src/generators/non-strict/declaration.template
+/*---
+description: Mixed use of object spread and yield as a valid identifier in a function body inside a generator body in non strict mode (Generator function declaration - valid for non-strict only cases)
+esid: prod-GeneratorDeclaration
+features: [Symbol, object-spread, generators]
+flags: [generated, noStrict]
+info: |
+    14.4 Generator Function Definitions
+
+    GeneratorDeclaration[Yield, Await, Default]:
+      function * BindingIdentifier[?Yield, ?Await] ( FormalParameters[+Yield, ~Await] ) { GeneratorBody }
+
+
+    Spread Properties
+
+    PropertyDefinition[Yield]:
+      (...)
+      ...AssignmentExpression[In, ?Yield]
+
+---*/
+var s = Symbol('s');
+
+var callCount = 0;
+
+function *gen() {
+  callCount += 1;
+  yield {
+       ...yield yield,
+       ...(function(arg) {
+          var yield = arg;
+          return {...yield};
+       }(yield)),
+       ...yield,
+    }
+}
+
+var iter = gen();
+
+var iter = gen();
+
+iter.next();
+iter.next();
+iter.next({ x: 10, a: 0, b: 0, [s]: 1 });
+iter.next({ y: 20, a: 1, b: 1, [s]: 42 });
+var item = iter.next({ z: 30, b: 2 });
+
+var value = item.value;
+
+assert.sameValue(item.done, false);
+assert.sameValue(value.x, 10);
+assert.sameValue(value.y, 20);
+assert.sameValue(value.z, 30);
+assert.sameValue(value.a, 1);
+assert.sameValue(value.b, 2);
+assert.sameValue(value[s], 42);
+assert(Object.prototype.hasOwnProperty.call(value, s), "s is an own property");
+assert.sameValue(Object.keys(value).length, 5);
+
+assert.sameValue(callCount, 1);
+
+reportCompare(0, 0);