1 files changed, 63 insertions, 0 deletions
diff --git a/js/src/tests/test262/language/statements/class/elements/static-field-anonymous-function-length.js b/js/src/tests/test262/language/statements/class/elements/static-field-anonymous-function-length.js
new file mode 100644
index 0000000000..17c4b304b2
--- /dev/null
+++ b/js/src/tests/test262/language/statements/class/elements/static-field-anonymous-function-length.js
@@ -0,0 +1,63 @@
+// This file was procedurally generated from the following sources:
+// - src/class-elements/static-field-anonymous-function-length.case
+// - src/class-elements/default/cls-decl.template
+/*---
+description: Anonymous function in field initilizer have length properly set (field definitions in a class declaration)
+esid: prod-FieldDefinition
+features: [class-static-fields-private, class-static-fields-public, class]
+flags: [generated]
+info: |
+    Updated Productions
+
+    ClassElement :
+      ...
+      static FieldDefinition ;
+
+    FieldDefinition :
+      ClassElementName Initializer_opt
+
+    ClassDefinitionEvaluation:
+      ...
+
+      27. Let staticFields be a new empty List.
+      28. For each ClassElement e in order from elements,
+        a. If IsStatic of e is false, then
+        ...
+        b. Else,
+          i. Let field be the result of performing PropertyDefinitionEvaluation for m ClassElementEvaluation for e with arguments F and false.
+        c. If field is an abrupt completion, then
+          ...
+        d. If field is not empty,
+          i. If IsStatic of e is false, append field to instanceFields.
+          ii. Otherwise, append field to staticFields.
+
+      34. For each item fieldRecord in order from staticFields,
+        a. Perform ? DefineField(F, field).
+      ...
+
+    DefineField(receiver, fieldRecord)
+      1. Assert: Type(receiver) is Object.
+      2. Assert: fieldRecord is a Record as created by ClassFieldDefinitionEvaluation.
+      3. Let name be fieldRecord.[[Name]].
+      4. Let initializer be fieldRecord.[[Initializer]].
+      5. If initializer is not empty, then
+        a. Let initValue be ? Call(initializer, receiver).
+      ...
+
+---*/
+
+
+class C {
+  static #field = (a, b) => undefined;
+  static field = function() {};
+
+  static accessPrivateField() {
+    return this.#field;
+  }
+
+}
+
+assert.sameValue(C.accessPrivateField().length, 2);
+assert.sameValue(C.field.length, 0);
+
+reportCompare(0, 0);