1 files changed, 82 insertions, 0 deletions
diff --git a/dom/webgpu/tests/cts/checkout/src/common/internal/stack.ts b/dom/webgpu/tests/cts/checkout/src/common/internal/stack.ts
new file mode 100644
index 0000000000..5de54088c8
--- /dev/null
+++ b/dom/webgpu/tests/cts/checkout/src/common/internal/stack.ts
@@ -0,0 +1,82 @@
+// Returns the stack trace of an Error, but without the extra boilerplate at the bottom
+// (e.g. RunCaseSpecific, processTicksAndRejections, etc.), for logging.
+export function extractImportantStackTrace(e: Error): string {
+  let stack = e.stack;
+  if (!stack) {
+    return '';
+  }
+  const redundantMessage = 'Error: ' + e.message + '\n';
+  if (stack.startsWith(redundantMessage)) {
+    stack = stack.substring(redundantMessage.length);
+  }
+
+  const lines = stack.split('\n');
+  for (let i = lines.length - 1; i >= 0; --i) {
+    const line = lines[i];
+    if (line.indexOf('.spec.') !== -1) {
+      return lines.slice(0, i + 1).join('\n');
+    }
+  }
+  return stack;
+}
+
+// *** Examples ***
+//
+// Node fail()
+// > Error:
+// >    at CaseRecorder.fail (/Users/kainino/src/cts/src/common/framework/logger.ts:99:30)
+// >    at RunCaseSpecific.exports.g.test.t [as fn] (/Users/kainino/src/cts/src/unittests/logger.spec.ts:80:7)
+// x    at RunCaseSpecific.run (/Users/kainino/src/cts/src/common/framework/test_group.ts:121:18)
+// x    at processTicksAndRejections (internal/process/task_queues.js:86:5)
+//
+// Node throw
+// > Error: hello
+// >     at RunCaseSpecific.g.test.t [as fn] (/Users/kainino/src/cts/src/unittests/test_group.spec.ts:51:11)
+// x     at RunCaseSpecific.run (/Users/kainino/src/cts/src/common/framework/test_group.ts:121:18)
+// x     at processTicksAndRejections (internal/process/task_queues.js:86:5)
+//
+// Firefox fail()
+// > fail@http://localhost:8080/out/framework/logger.js:104:30
+// > expect@http://localhost:8080/out/framework/default_fixture.js:59:16
+// > @http://localhost:8080/out/unittests/util.spec.js:35:5
+// x run@http://localhost:8080/out/framework/test_group.js:119:18
+//
+// Firefox throw
+// > @http://localhost:8080/out/unittests/test_group.spec.js:48:11
+// x run@http://localhost:8080/out/framework/test_group.js:119:18
+//
+// Safari fail()
+// > fail@http://localhost:8080/out/framework/logger.js:104:39
+// > expect@http://localhost:8080/out/framework/default_fixture.js:59:20
+// > http://localhost:8080/out/unittests/util.spec.js:35:11
+// x http://localhost:8080/out/framework/test_group.js:119:20
+// x asyncFunctionResume@[native code]
+// x [native code]
+// x promiseReactionJob@[native code]
+//
+// Safari throw
+// > http://localhost:8080/out/unittests/test_group.spec.js:48:20
+// x http://localhost:8080/out/framework/test_group.js:119:20
+// x asyncFunctionResume@[native code]
+// x [native code]
+// x promiseReactionJob@[native code]
+//
+// Chrome fail()
+// x Error
+// x     at CaseRecorder.fail (http://localhost:8080/out/framework/logger.js:104:30)
+// x     at DefaultFixture.expect (http://localhost:8080/out/framework/default_fixture.js:59:16)
+// >     at RunCaseSpecific.fn (http://localhost:8080/out/unittests/util.spec.js:35:5)
+// x     at RunCaseSpecific.run (http://localhost:8080/out/framework/test_group.js:119:18)
+// x     at async runCase (http://localhost:8080/out/runtime/standalone.js:37:17)
+// x     at async http://localhost:8080/out/runtime/standalone.js:102:7
+//
+// Chrome throw
+// x Error: hello
+// >     at RunCaseSpecific.fn (http://localhost:8080/out/unittests/test_group.spec.js:48:11)
+// x     at RunCaseSpecific.run (http://localhost:8080/out/framework/test_group.js:119:18)"
+// x     at async Promise.all (index 0)
+// x     at async TestGroupTest.run (http://localhost:8080/out/unittests/test_group_test.js:6:5)
+// x     at async RunCaseSpecific.fn (http://localhost:8080/out/unittests/test_group.spec.js:53:15)
+// x     at async RunCaseSpecific.run (http://localhost:8080/out/framework/test_group.js:119:7)
+// x     at async runCase (http://localhost:8080/out/runtime/standalone.js:37:17)
+// x     at async http://localhost:8080/out/runtime/standalone.js:102:7