1 files changed, 102 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/typedarray/construct-with-resizable-arraybuffer.js b/js/src/jit-test/tests/typedarray/construct-with-resizable-arraybuffer.js
new file mode 100644
index 0000000000..33f7a4f6c6
--- /dev/null
+++ b/js/src/jit-test/tests/typedarray/construct-with-resizable-arraybuffer.js
@@ -0,0 +1,102 @@
+// |jit-test| --enable-arraybuffer-resizable; skip-if: !ArrayBuffer.prototype.resize
+
+// Test TypedArray constructor when called with resizable ArrayBuffers.
+
+function testArrayBuffer() {
+    function test() {
+        var ab = new ArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: 5 * Int32Array.BYTES_PER_ELEMENT});
+        for (var i = 0; i < 200; ++i) {
+            var ta = new Int32Array(ab);
+            assertEq(ta.length, 4);
+
+            // Ensure auto-length tracking works correctly.
+            ab.resize(5 * Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 5);
+
+            ab.resize(2 * Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 2);
+
+            // Reset to original length.
+            ab.resize(4 * Int32Array.BYTES_PER_ELEMENT);
+        }
+    }
+    for (var i = 0; i < 2; ++i) {
+        test();
+    }
+}
+testArrayBuffer();
+
+function testArrayBufferAndByteOffset() {
+    function test() {
+        var ab = new ArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: 5 * Int32Array.BYTES_PER_ELEMENT});
+        for (var i = 0; i < 200; ++i) {
+            var ta = new Int32Array(ab, Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 3);
+
+            // Ensure auto-length tracking works correctly.
+            ab.resize(5 * Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 4);
+
+            ab.resize(2 * Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 1);
+
+            // Reset to original length.
+            ab.resize(4 * Int32Array.BYTES_PER_ELEMENT);
+        }
+    }
+    for (var i = 0; i < 2; ++i) {
+        test();
+    }
+}
+testArrayBufferAndByteOffset();
+
+function testArrayBufferAndByteOffsetAndLength() {
+    function test() {
+        var ab = new ArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: 5 * Int32Array.BYTES_PER_ELEMENT});
+        for (var i = 0; i < 200; ++i) {
+            var ta = new Int32Array(ab, Int32Array.BYTES_PER_ELEMENT, 2);
+            assertEq(ta.length, 2);
+
+            // Ensure length doesn't change when resizing the buffer.
+            ab.resize(5 * Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 2);
+
+            // Returns zero when the TypedArray get out-of-bounds.
+            ab.resize(2 * Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 0);
+
+            // Reset to original length.
+            ab.resize(4 * Int32Array.BYTES_PER_ELEMENT);
+        }
+    }
+    for (var i = 0; i < 2; ++i) {
+        test();
+    }
+}
+testArrayBufferAndByteOffsetAndLength();
+
+function testWrappedArrayBuffer() {
+    var g = newGlobal();
+
+    function test() {
+        var ab = new g.ArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: 5 * Int32Array.BYTES_PER_ELEMENT});
+        for (var i = 0; i < 200; ++i) {
+            var ta = new Int32Array(ab);
+            assertEq(ta.length, 4);
+
+            // Ensure auto-length tracking works correctly.
+            ab.resize(5 * Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 5);
+
+            ab.resize(2 * Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 2);
+
+            // Reset to original length.
+            ab.resize(4 * Int32Array.BYTES_PER_ELEMENT);
+        }
+    }
+    for (var i = 0; i < 2; ++i) {
+        test();
+    }
+}
+testWrappedArrayBuffer();