1 files changed, 81 insertions, 0 deletions
diff --git a/js/src/jit-test/tests/typedarray/construct-with-growable-sharedarraybuffer.js b/js/src/jit-test/tests/typedarray/construct-with-growable-sharedarraybuffer.js
new file mode 100644
index 0000000000..29696f0860
--- /dev/null
+++ b/js/src/jit-test/tests/typedarray/construct-with-growable-sharedarraybuffer.js
@@ -0,0 +1,81 @@
+// |jit-test| --enable-arraybuffer-resizable; skip-if: !ArrayBuffer.prototype.resize||!this.SharedArrayBuffer
+
+// Test TypedArray constructor when called with growable SharedArrayBuffers.
+
+function testSharedArrayBuffer() {
+    function test() {
+        var N = 200;
+        var sab = new SharedArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: (5 + N) * Int32Array.BYTES_PER_ELEMENT});
+        for (var i = 0; i < N; ++i) {
+            var ta = new Int32Array(sab);
+            assertEq(ta.length, 4 + i);
+
+            // Ensure auto-length tracking works correctly.
+            sab.grow((5 + i) * Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 5 + i);
+        }
+    }
+    for (var i = 0; i < 2; ++i) {
+        test();
+    }
+}
+testSharedArrayBuffer();
+
+function testSharedArrayBufferAndByteOffset() {
+    function test() {
+        var N = 200;
+        var sab = new SharedArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: (5 + N) * Int32Array.BYTES_PER_ELEMENT});
+        for (var i = 0; i < N; ++i) {
+            var ta = new Int32Array(sab, Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 3 + i);
+
+            // Ensure auto-length tracking works correctly.
+            sab.grow((5 + i) * Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 4 + i);
+        }
+    }
+    for (var i = 0; i < 2; ++i) {
+        test();
+    }
+}
+testSharedArrayBufferAndByteOffset();
+
+function testSharedArrayBufferAndByteOffsetAndLength() {
+    function test() {
+        var N = 200;
+        var sab = new SharedArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: (5 + N) * Int32Array.BYTES_PER_ELEMENT});
+        for (var i = 0; i < N; ++i) {
+            var ta = new Int32Array(sab, Int32Array.BYTES_PER_ELEMENT, 2);
+            assertEq(ta.length, 2);
+
+            // Ensure length doesn't change when resizing the buffer.
+            sab.grow((5 + i) * Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 2);
+        }
+    }
+    for (var i = 0; i < 2; ++i) {
+        test();
+    }
+}
+testSharedArrayBufferAndByteOffsetAndLength();
+
+function testWrappedSharedArrayBuffer() {
+    var g = newGlobal();
+
+    function test() {
+        var N = 200;
+        var sab = new g.SharedArrayBuffer(4 * Int32Array.BYTES_PER_ELEMENT, {maxByteLength: (5 + N) * Int32Array.BYTES_PER_ELEMENT});
+        for (var i = 0; i < N; ++i) {
+            var ta = new Int32Array(sab);
+            assertEq(ta.length, 4 + i);
+
+            // Ensure auto-length tracking works correctly.
+            sab.grow((5 + i) * Int32Array.BYTES_PER_ELEMENT);
+            assertEq(ta.length, 5 + i);
+        }
+    }
+    for (var i = 0; i < 2; ++i) {
+        test();
+    }
+}
+testWrappedSharedArrayBuffer();