1 files changed, 63 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/elements/redeclaration.js b/js/src/tests/test262/language/statements/class/elements/redeclaration.js
new file mode 100644
index 0000000000..adefc1b2ac
--- /dev/null
+++ b/js/src/tests/test262/language/statements/class/elements/redeclaration.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/class-elements/redeclaration.case
+// - src/class-elements/default/cls-decl.template
+/*---
+description: Redeclaration of public fields with the same name (field definitions in a class declaration)
+esid: prod-FieldDefinition
+features: [class-fields-public, computed-property-names, class]
+flags: [generated]
+includes: [propertyHelper.js, compareArray.js]
+info: |
+    2.13.2 Runtime Semantics: ClassDefinitionEvaluation
+
+    ...
+    30. Set the value of F's [[Fields]] internal slot to fieldRecords.
+    ...
+
+    2.14 [[Construct]] ( argumentsList, newTarget)
+
+    ...
+    8. If kind is "base", then
+      ...
+      b. Let result be InitializeInstanceFields(thisArgument, F).
+    ...
+
+    2.9 InitializeInstanceFields ( O, constructor )
+
+    3. Let fieldRecords be the value of constructor's [[Fields]] internal slot.
+    4. For each item fieldRecord in order from fieldRecords,
+      a. If fieldRecord.[[static]] is false, then
+        i. Perform ? DefineField(O, fieldRecord).
+
+---*/
+var x = [];
+
+
+class C {
+  y = (x.push("a"), "old_value");
+  ["y"] = (x.push("b"), "another_value");
+  "y" = (x.push("c"), "same_value");
+  y = (x.push("d"), "same_value");
+}
+
+var c = new C();
+
+assert(
+  !Object.prototype.hasOwnProperty.call(C.prototype, "y"),
+  "y does not appear as an own property on C prototype"
+);
+assert(
+  !Object.prototype.hasOwnProperty.call(C, "y"),
+  "y does not appear as an own property on C constructor"
+);
+
+verifyProperty(c, "y", {
+  value: "same_value",
+  enumerable: true,
+  writable: true,
+  configurable: true
+});
+
+assert.compareArray(x, ["a", "b", "c", "d"]);
+
+reportCompare(0, 0);