1 files changed, 54 insertions, 0 deletions
diff --git a/js/src/tests/test262/built-ins/DataView/prototype/byteOffset/resizable-array-buffer-auto.js b/js/src/tests/test262/built-ins/DataView/prototype/byteOffset/resizable-array-buffer-auto.js
new file mode 100644
index 0000000000..f80d175bc4
--- /dev/null
+++ b/js/src/tests/test262/built-ins/DataView/prototype/byteOffset/resizable-array-buffer-auto.js
@@ -0,0 +1,54 @@
+// |reftest| shell-option(--enable-arraybuffer-resizable) skip-if(!ArrayBuffer.prototype.resize||!xulRuntime.shell) -- resizable-arraybuffer is not enabled unconditionally, requires shell-options
+// Copyright (C) 2021 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-dataview.prototype.byteoffset
+description: |
+  throws a TypeError if the underlying ArrayBuffer is resized beyond the
+  boundary of the dynamically-sized DataView instance
+features: [resizable-arraybuffer]
+---*/
+
+// If the host chooses to throw as allowed by the specification, the observed
+// behavior will be identical to the case where `ArrayBuffer.prototype.resize`
+// has not been implemented. The following assertion prevents this test from
+// passing in runtimes which have not implemented the method.
+assert.sameValue(typeof ArrayBuffer.prototype.resize, "function");
+
+var ab = new ArrayBuffer(4, {maxByteLength: 5});
+var dataView = new DataView(ab, 1);
+
+assert.sameValue(dataView.byteOffset, 1);
+
+try {
+  ab.resize(5);
+} catch (_) {}
+
+assert.sameValue(dataView.byteOffset, 1, "following grow");
+
+try {
+  ab.resize(3);
+} catch (_) {}
+
+assert.sameValue(dataView.byteOffset, 1, "following shrink (within bounds)");
+
+try {
+  ab.resize(1);
+} catch (_) {}
+
+assert.sameValue(dataView.byteOffset, 1, "following shrink (on boundary)");
+
+var expectedError;
+try {
+  ab.resize(0);
+  expectedError = TypeError;
+} catch (_) {
+  expectedError = Test262Error;
+}
+
+assert.throws(expectedError, function() {
+  dataView.byteOffset;
+  throw new Test262Error('the operation completed successfully');
+});
+
+reportCompare(0, 0);