1 files changed, 84 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/elements/same-line-async-gen-static-private-fields.js b/js/src/tests/test262/language/statements/class/elements/same-line-async-gen-static-private-fields.js
new file mode 100644
index 0000000000..534bf0f6aa
--- /dev/null
+++ b/js/src/tests/test262/language/statements/class/elements/same-line-async-gen-static-private-fields.js
@@ -0,0 +1,84 @@
+// |reftest| async
+// This file was procedurally generated from the following sources:
+// - src/class-elements/static-private-fields.case
+// - src/class-elements/productions/cls-decl-after-same-line-async-gen.template
+/*---
+description: static private fields (field definitions after an async generator in the same line)
+esid: prod-FieldDefinition
+features: [class-static-fields-private, class, class-fields-public, async-iteration]
+flags: [generated, async]
+includes: [propertyHelper.js]
+info: |
+    ClassElement :
+      ...
+      static FieldDefinition ;
+
+    FieldDefinition :
+      ClassElementName Initializer_opt
+
+    ClassElementName :
+      PrivateName
+
+    PrivateName :
+      # IdentifierName
+
+---*/
+
+
+class C {
+  async *m() { return 42; } static #x; static #y;
+  static x() {
+    this.#x = 42;
+    return this.#x;
+  }
+  static y() {
+    this.#y = 43;
+    return this.#y;
+  }
+}
+
+var c = new C();
+
+assert(
+  !Object.prototype.hasOwnProperty.call(c, "m"),
+  "m doesn't appear as an own property on the C instance"
+);
+assert.sameValue(c.m, C.prototype.m);
+
+verifyProperty(C.prototype, "m", {
+  enumerable: false,
+  configurable: true,
+  writable: true,
+}, {restore: true});
+
+c.m().next().then(function(v) {
+  assert.sameValue(v.value, 42);
+  assert.sameValue(v.done, true);
+
+  function assertions() {
+    // Cover $DONE handler for async cases.
+    function $DONE(error) {
+      if (error) {
+        throw new Test262Error('Test262:AsyncTestFailure')
+      }
+    }
+    // Test the private fields do not appear as properties before set to value
+    assert(!Object.prototype.hasOwnProperty.call(C.prototype, "#x"), "test 1");
+    assert(!Object.prototype.hasOwnProperty.call(C, "#x"), "test 2");
+    assert(!Object.prototype.hasOwnProperty.call(c, "#x"), "test 3");
+
+    assert(!Object.prototype.hasOwnProperty.call(C.prototype, "#y"), "test 4");
+    assert(!Object.prototype.hasOwnProperty.call(C, "#y"), "test 5");
+    assert(!Object.prototype.hasOwnProperty.call(c, "#y"), "test 6");
+
+    // Test if private fields can be sucessfully accessed and set to value
+    assert.sameValue(C.x(), 42, "test 7");
+    assert.sameValue(C.y(), 43, "test 8");
+
+    // Test the private fields do not appear as properties before after set to value
+    assert(!Object.prototype.hasOwnProperty.call(C, "#x"), "test 9");
+    assert(!Object.prototype.hasOwnProperty.call(C, "#y"), "test 10");
+  }
+
+  return Promise.resolve(assertions());
+}).then($DONE, $DONE);