1 files changed, 71 insertions, 0 deletions
diff --git a/dom/webgpu/tests/cts/checkout/src/unittests/check_contents.spec.ts b/dom/webgpu/tests/cts/checkout/src/unittests/check_contents.spec.ts
new file mode 100644
index 0000000000..1a722a1b86
--- /dev/null
+++ b/dom/webgpu/tests/cts/checkout/src/unittests/check_contents.spec.ts
@@ -0,0 +1,71 @@
+export const description = `Unit tests for check_contents`;
+
+import { Fixture } from '../common/framework/fixture.js';
+import { makeTestGroup } from '../common/internal/test_group.js';
+import { ErrorWithExtra } from '../common/util/util.js';
+import { checkElementsEqual } from '../webgpu/util/check_contents.js';
+
+class F extends Fixture {
+  test(substr: undefined | string, result: undefined | ErrorWithExtra) {
+    if (substr === undefined) {
+      this.expect(result === undefined, result?.message);
+    } else {
+      this.expect(result !== undefined && result.message.indexOf(substr) !== -1, result?.message);
+    }
+  }
+}
+
+export const g = makeTestGroup(F);
+
+g.test('checkElementsEqual').fn(t => {
+  t.shouldThrow('Error', () => checkElementsEqual(new Uint8Array(), new Uint16Array()));
+  t.shouldThrow('Error', () => checkElementsEqual(new Uint32Array(), new Float32Array()));
+  t.shouldThrow('Error', () => checkElementsEqual(new Uint8Array([]), new Uint8Array([0])));
+  t.shouldThrow('Error', () => checkElementsEqual(new Uint8Array([0]), new Uint8Array([])));
+  {
+    t.test(undefined, checkElementsEqual(new Uint8Array([]), new Uint8Array([])));
+    t.test(undefined, checkElementsEqual(new Uint8Array([0]), new Uint8Array([0])));
+    t.test(undefined, checkElementsEqual(new Uint8Array([1]), new Uint8Array([1])));
+    t.test(
+      `
+ Starting at index 0:
+   actual == 0x: 00
+   failed ->     xx
+ expected ==     01`,
+      checkElementsEqual(new Uint8Array([0]), new Uint8Array([1]))
+    );
+    t.test(
+      'expected ==     01 02 01',
+      checkElementsEqual(new Uint8Array([1, 1, 1]), new Uint8Array([1, 2, 1]))
+    );
+  }
+  {
+    const actual = new Uint8Array(280);
+    const exp = new Uint8Array(280);
+    for (let i = 2; i < 20; ++i) actual[i] = i - 4;
+    t.test(
+      '00 fe ff 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 00',
+      checkElementsEqual(actual, exp)
+    );
+    for (let i = 2; i < 280; ++i) actual[i] = i - 4;
+    t.test('Starting at index 1:', checkElementsEqual(actual, exp));
+    for (let i = 0; i < 2; ++i) actual[i] = i - 4;
+    t.test('Starting at index 0:', checkElementsEqual(actual, exp));
+  }
+  {
+    const actual = new Int32Array(30);
+    const exp = new Int32Array(30);
+    for (let i = 2; i < 7; ++i) actual[i] = i - 3;
+    t.test('00000002 00000003 00000000\n', checkElementsEqual(actual, exp));
+    for (let i = 2; i < 30; ++i) actual[i] = i - 3;
+    t.test('00000000 00000000 ...', checkElementsEqual(actual, exp));
+  }
+  {
+    const actual = new Float64Array(30);
+    const exp = new Float64Array(30);
+    for (let i = 2; i < 7; ++i) actual[i] = (i - 4) * 1e100;
+    t.test('2.000e+100 0.000\n', checkElementsEqual(actual, exp));
+    for (let i = 2; i < 280; ++i) actual[i] = (i - 4) * 1e100;
+    t.test('6.000e+100 7.000e+100 ...', checkElementsEqual(actual, exp));
+  }
+});