Test non-configurable descriptor & valid index

test/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/BigInt/key-is-numericindex-desc-not-configurable-throws.js

@@ -0,0 +1,39 @@
+// Copyright (C) 2021 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-integer-indexed-exotic-objects-defineownproperty-p-desc
+description: >
+  Throws TypeError for valid index & non-configurable descriptor.
+info: |
+  [[DefineOwnProperty]] ( P, Desc )
+
+  [...]
+  3. If Type(P) is String, then
+    a. Let numericIndex be ! CanonicalNumericIndexString(P).
+    b. If numericIndex is not undefined, then
+      [...]
+      ii. If Desc has a [[Configurable]] field and if Desc.[[Configurable]] is false, return false.
+includes: [testBigIntTypedArray.js]
+features: [align-detached-buffer-semantics-with-web-reality, BigInt, TypedArray]
+---*/
+
+testWithBigIntTypedArrayConstructors(function(TA) {
+  var sample = new TA([0n]);
+
+  assert.throws(TypeError, function() {
+    Object.defineProperty(sample, "0", {
+      configurable: false,
+    });
+  }, "partial descriptor");
+
+  assert.throws(TypeError, function() {
+    Object.defineProperty(sample, "0", {
+      value: 42n,
+      writable: true,
+      enumerable: true,
+      configurable: false,
+    });
+  }, "complete descriptor");
+
+  assert.sameValue(sample[0], 0n, "side effect check");
+});

test/built-ins/TypedArrayConstructors/internals/DefineOwnProperty/key-is-numericindex-desc-not-configurable-throws.js

@@ -0,0 +1,39 @@
+// Copyright (C) 2021 Alexey Shvayka. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-integer-indexed-exotic-objects-defineownproperty-p-desc
+description: >
+  Throws TypeError for valid index & non-configurable descriptor.
+info: |
+  [[DefineOwnProperty]] ( P, Desc )
+
+  [...]
+  3. If Type(P) is String, then
+    a. Let numericIndex be ! CanonicalNumericIndexString(P).
+    b. If numericIndex is not undefined, then
+      [...]
+      ii. If Desc has a [[Configurable]] field and if Desc.[[Configurable]] is false, return false.
+includes: [testTypedArray.js]
+features: [align-detached-buffer-semantics-with-web-reality, TypedArray]
+---*/
+
+testWithTypedArrayConstructors(function(TA) {
+  var sample = new TA([0]);
+
+  assert.throws(TypeError, function() {
+    Object.defineProperty(sample, "0", {
+      configurable: false,
+    });
+  }, "partial descriptor");
+
+  assert.throws(TypeError, function() {
+    Object.defineProperty(sample, "0", {
+      value: 42,
+      writable: true,
+      enumerable: true,
+      configurable: false,
+    });
+  }, "complete descriptor");
+
+  assert.sameValue(sample[0], 0, "side effect check");
+});