1 files changed, 86 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/elements/async-gen-private-method/yield-identifier-spread-strict-strict.js b/js/src/tests/test262/language/statements/class/elements/async-gen-private-method/yield-identifier-spread-strict-strict.js
new file mode 100644
index 0000000000..ae61f6aca5
--- /dev/null
+++ b/js/src/tests/test262/language/statements/class/elements/async-gen-private-method/yield-identifier-spread-strict-strict.js
@@ -0,0 +1,86 @@
+// |reftest| error:SyntaxError
+'use strict';
+// This file was procedurally generated from the following sources:
+// - src/async-generators/yield-identifier-spread-strict.case
+// - src/async-generators/default/async-class-decl-private-method.template
+/*---
+description: It's an early error if the AssignmentExpression is a function body with yield as an identifier in strict mode. (Async Generator method as a ClassDeclaration element)
+esid: prod-AsyncGeneratorPrivateMethod
+features: [object-spread, async-iteration, class-methods-private]
+flags: [generated, onlyStrict]
+negative:
+  phase: parse
+  type: SyntaxError
+info: |
+    ClassElement :
+      PrivateMethodDefinition
+
+    MethodDefinition :
+      AsyncGeneratorMethod
+
+    Async Generator Function Definitions
+
+    AsyncGeneratorMethod :
+      async [no LineTerminator here] * PropertyName ( UniqueFormalParameters ) { AsyncGeneratorBody }
+
+
+    Spread Properties
+
+    PropertyDefinition[Yield]:
+      (...)
+      ...AssignmentExpression[In, ?Yield]
+
+---*/
+$DONOTEVALUATE();
+
+
+var callCount = 0;
+
+class C {
+    async *#gen() {
+        callCount += 1;
+        return {
+             ...(function() {
+                var yield;
+                throw new Test262Error();
+             }()),
+          }
+    }
+    get gen() { return this.#gen; }
+}
+
+const c = new C();
+
+// Test the private fields do not appear as properties before set to value
+assert(
+  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
+  "#gen does not appear as an own property on C prototype"
+);
+assert(
+  !Object.prototype.hasOwnProperty.call(C, "#gen"),
+  "#gen does not appear as an own property on C constructor"
+);
+assert(
+  !Object.prototype.hasOwnProperty.call(c, "#gen"),
+  "#gen does not appear as an own property on C instance"
+);
+
+var iter = c.gen();
+
+
+
+assert.sameValue(callCount, 1);
+
+// Test the private fields do not appear as properties after set to value
+assert(
+  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
+  "#gen does not appear as an own property on C prototype"
+);
+assert(
+  !Object.prototype.hasOwnProperty.call(C, "#gen"),
+  "#gen does not appear as an own property on C constructor"
+);
+assert(
+  !Object.prototype.hasOwnProperty.call(c, "#gen"),
+  "#gen does not appear as an own property on C instance"
+);