1 files changed, 67 insertions, 0 deletions
diff --git a/js/src/tests/non262/TypedArray/test-integrity-level.js b/js/src/tests/non262/TypedArray/test-integrity-level.js
new file mode 100644
index 0000000000..c382b4967c
--- /dev/null
+++ b/js/src/tests/non262/TypedArray/test-integrity-level.js
@@ -0,0 +1,67 @@
+const EMPTY = 0;
+const INLINE_STORAGE = 10;
+const NON_INLINE_STORAGE = 1024;
+
+// Empty typed arrays can be sealed.
+{
+    let ta = new Int32Array(EMPTY);
+    Object.seal(ta);
+
+    assertEq(Object.isExtensible(ta), false);
+    assertEq(Object.isSealed(ta), true);
+    assertEq(Object.isFrozen(ta), true);
+}
+
+// Non-empty typed arrays cannot be sealed.
+for (let length of [INLINE_STORAGE, NON_INLINE_STORAGE]) {
+    let ta = new Int32Array(length);
+    assertThrowsInstanceOf(() => Object.seal(ta), TypeError);
+
+    assertEq(Object.isExtensible(ta), false);
+    assertEq(Object.isSealed(ta), false);
+    assertEq(Object.isFrozen(ta), false);
+}
+
+// Empty typed arrays can be frozen.
+{
+    let ta = new Int32Array(EMPTY);
+    Object.freeze(ta);
+
+    assertEq(Object.isExtensible(ta), false);
+    assertEq(Object.isSealed(ta), true);
+    assertEq(Object.isFrozen(ta), true);
+}
+
+// Non-empty typed arrays cannot be frozen.
+for (let length of [INLINE_STORAGE, NON_INLINE_STORAGE]) {
+    let ta = new Int32Array(length);
+    assertThrowsInstanceOf(() => Object.freeze(ta), TypeError);
+
+    assertEq(Object.isExtensible(ta), false);
+    assertEq(Object.isSealed(ta), false);
+    assertEq(Object.isFrozen(ta), false);
+}
+
+// Non-extensible empty typed arrays are sealed and frozen.
+{
+    let ta = new Int32Array(EMPTY);
+    Object.preventExtensions(ta);
+
+    assertEq(Object.isExtensible(ta), false);
+    assertEq(Object.isSealed(ta), true);
+    assertEq(Object.isFrozen(ta), true);
+}
+
+// Non-extensible non-empty typed arrays are neither sealed nor frozen.
+for (let length of [INLINE_STORAGE, NON_INLINE_STORAGE]) {
+    let ta = new Int32Array(length);
+    Object.preventExtensions(ta);
+
+    assertEq(Object.isExtensible(ta), false);
+    assertEq(Object.isSealed(ta), false);
+    assertEq(Object.isFrozen(ta), false);
+}
+
+
+if (typeof reportCompare === "function")
+    reportCompare(true, true);