1 files changed, 139 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg-pause-exceptions.js b/devtools/client/debugger/test/mochitest/browser_dbg-pause-exceptions.js
new file mode 100644
index 0000000000..eeebb1be3d
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-pause-exceptions.js
@@ -0,0 +1,139 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+/*
+  Tests Pausing on exception
+  1. skip an uncaught exception
+  2. pause on an uncaught exception
+  3. pause on a caught error
+  4. skip a caught error
+*/
+
+"use strict";
+
+const { PromiseTestUtils } = ChromeUtils.importESModule(
+  "resource://testing-common/PromiseTestUtils.sys.mjs"
+);
+// This is step 9
+PromiseTestUtils.allowMatchingRejectionsGlobally(/doesntExists is not defined/);
+
+add_task(async function () {
+  const dbg = await initDebugger("doc-exceptions.html", "exceptions.js");
+  const source = findSource(dbg, "exceptions.js");
+
+  info("1. test skipping an uncaught exception");
+  await uncaughtException();
+  assertNotPaused(dbg);
+
+  info("2. Test pausing on an uncaught exception");
+  await togglePauseOnExceptions(dbg, true, true);
+  uncaughtException();
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 2);
+
+  const whyPaused = await waitFor(
+    () => dbg.win.document.querySelector(".why-paused")?.innerText
+  );
+  is(whyPaused, `Paused on exception\nunreachable`);
+
+  await resume(dbg);
+
+  info("2.b Test throwing the same uncaught exception pauses again");
+  await togglePauseOnExceptions(dbg, true, true);
+  uncaughtException();
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 2);
+  await resume(dbg);
+
+  info("3. Test pausing on a caught Error");
+  caughtException();
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 7);
+
+  info("3.b Test pausing in the catch statement");
+  await resume(dbg);
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 9);
+  await resume(dbg);
+
+  info("4. Test skipping a caught error");
+  await togglePauseOnExceptions(dbg, true, false);
+  caughtException();
+
+  info("4.b Test pausing in the catch statement");
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 9);
+  await resume(dbg);
+
+  await togglePauseOnExceptions(dbg, true, true);
+
+  info("5. Only pause once when throwing deep in the stack");
+  invokeInTab("deepError");
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 16);
+  await resume(dbg);
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 22);
+  await resume(dbg);
+
+  info("6. Only pause once on an exception when pausing in a finally block");
+  invokeInTab("deepErrorFinally");
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 34);
+  await resume(dbg);
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 31);
+  await resume(dbg);
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 40);
+  await resume(dbg);
+
+  info("7. Only pause once on an exception when it is rethrown from a catch");
+  invokeInTab("deepErrorCatch");
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 53);
+  await resume(dbg);
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 49);
+  await resume(dbg);
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 59);
+  await resume(dbg);
+
+  info("8. Pause on each exception thrown while unwinding");
+  invokeInTab("deepErrorThrowDifferent");
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 71);
+  await resume(dbg);
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 68);
+  await resume(dbg);
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, source.id, 77);
+  await resume(dbg);
+
+  info("9. Pause in throwing new Function argument");
+  const onNewSource = waitForDispatch(dbg.store, "ADD_SOURCES");
+  invokeInTab("throwInNewFunctionArgument");
+  await waitForPaused(dbg);
+  const { sources } = await onNewSource;
+  is(sources.length, 1, "Got a unique source related to new Function source");
+  const newFunctionSource = sources[0];
+  is(
+    newFunctionSource.url,
+    null,
+    "This new source looks like the new function one as it has no url"
+  );
+  assertPausedAtSourceAndLine(dbg, newFunctionSource.id, 1, 0);
+  assertTextContentOnLine(dbg, 1, "function anonymous(f=doesntExists()");
+  await resume(dbg);
+});
+
+function uncaughtException() {
+  return invokeInTab("uncaughtException").catch(() => {});
+}
+
+function caughtException() {
+  return invokeInTab("caughtException");
+}