1 files changed, 78 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/elements/gen-private-method-static/yield-spread-obj.js b/js/src/tests/test262/language/statements/class/elements/gen-private-method-static/yield-spread-obj.js
new file mode 100644
index 0000000000..a98fdf4aad
--- /dev/null
+++ b/js/src/tests/test262/language/statements/class/elements/gen-private-method-static/yield-spread-obj.js
@@ -0,0 +1,78 @@
+// This file was procedurally generated from the following sources:
+// - src/generators/yield-spread-obj.case
+// - src/generators/default/class-decl-static-private-method.template
+/*---
+description: Use yield value in a object spread position (Static generator private method as a ClassDeclaration element)
+esid: prod-GeneratorPrivateMethod
+features: [object-spread, generators, class-static-methods-private]
+flags: [generated]
+info: |
+    ClassElement :
+      static PrivateMethodDefinition
+
+    MethodDefinition :
+      GeneratorMethod
+
+    14.4 Generator Function Definitions
+
+    GeneratorMethod :
+      * PropertyName ( UniqueFormalParameters ) { GeneratorBody }
+
+
+    Spread Properties
+
+    PropertyDefinition[Yield]:
+      (...)
+      ...AssignmentExpression[In, ?Yield]
+
+---*/
+
+var callCount = 0;
+
+class C {
+    static *#gen() {
+        callCount += 1;
+        yield {
+            ...yield,
+            y: 1,
+            ...yield yield,
+          };
+    }
+    static get gen() { return this.#gen; }
+}
+
+// Test the private fields do not appear as properties before set to value
+assert(
+  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
+  "Private field '#gen' does not appear as an own property on C prototype"
+);
+assert(
+  !Object.prototype.hasOwnProperty.call(C, "#gen"),
+  "Private field '#gen' does not appear as an own property on C constructor"
+);
+
+var iter = C.gen();
+
+iter.next();
+iter.next({ x: 42 });
+iter.next({ x: 'lol' });
+var item = iter.next({ y: 39 });
+
+assert.sameValue(item.value.x, 42);
+assert.sameValue(item.value.y, 39);
+assert.sameValue(Object.keys(item.value).length, 2);
+assert.sameValue(item.done, false);
+
+assert.sameValue(callCount, 1);
+
+// Test the private fields do not appear as properties before set to value
+assert(
+  !Object.prototype.hasOwnProperty.call(C.prototype, "#gen"),
+  "Private field '#gen' does not appear as an own property on C prototype"
+);
+assert(
+  !Object.prototype.hasOwnProperty.call(C, "#gen"),
+  "Private field '#gen' does not appear as an own property on C constructor"
+);
+
+reportCompare(0, 0);