1 files changed, 92 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg-breakpoints-in-evaled-sources.js b/devtools/client/debugger/test/mochitest/browser_dbg-breakpoints-in-evaled-sources.js
new file mode 100644
index 0000000000..a4569dbfda
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg-breakpoints-in-evaled-sources.js
@@ -0,0 +1,92 @@
+/* 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/>. */
+
+// this evaled source includes a "debugger" statement so that it gets
+// automatically opened in the debugger when it is executed.
+// We wrap it in a setTimeout to avoid errors in the webconsole actor which
+// would still be processing the outcome of the evaluation after we destroy
+// the thread actor.
+
+"use strict";
+
+const EVALED_SOURCE_TEXT = `setTimeout(function() {
+  debugger;
+  console.log("SECOND LINE");
+}, 10)`;
+
+/**
+ * Check against blank debugger panel issues when attempting to restore
+ * breakpoints set in evaled sources (Bug 1720512).
+ *
+ * The STRs triggering this bug require to:
+ * - set a valid breakpoint on a regular source
+ * - then set a breakpoint on an evaled source
+ * - close and reopen the debugger
+ *
+ * This test will follow those STRs while also performing a few additional
+ * checks (eg verify breakpoints can be hit at various stages of the test).
+ */
+add_task(async function () {
+  info("Open the debugger and set a breakpoint on a regular script");
+  const dbg = await initDebugger("doc-scripts.html");
+  await selectSource(dbg, "doc-scripts.html");
+  await addBreakpoint(dbg, "doc-scripts.html", 21);
+
+  info("Switch to the console and evaluate a source with a debugger statement");
+  const { hud } = await dbg.toolbox.selectTool("webconsole");
+  const onSelected = dbg.toolbox.once("jsdebugger-selected");
+  await hud.ui.wrapper.dispatchEvaluateExpression(EVALED_SOURCE_TEXT);
+
+  info("Wait for the debugger to be selected");
+  await onSelected;
+
+  info("Wait for the debugger to be paused on the debugger statement");
+  await waitForPaused(dbg);
+
+  is(
+    getCM(dbg).getValue(),
+    EVALED_SOURCE_TEXT,
+    "The debugger is showing the evaled source"
+  );
+
+  const evaledSource = dbg.selectors.getSelectedSource();
+  assertPausedAtSourceAndLine(dbg, evaledSource.id, 2);
+
+  info("Add a breakpoint in the evaled source");
+  await addBreakpoint(dbg, evaledSource, 3);
+
+  info("Resume and check that we hit the breakpoint");
+  await resume(dbg);
+  await waitForPaused(dbg);
+  assertPausedAtSourceAndLine(dbg, evaledSource.id, 3);
+
+  info("Close the toolbox");
+  await dbg.toolbox.closeToolbox();
+
+  info("Reopen the toolbox on the debugger");
+  const toolbox2 = await openToolboxForTab(gBrowser.selectedTab, "jsdebugger");
+  const dbg2 = createDebuggerContext(toolbox2);
+
+  // The initial regression tested here led to a blank debugger,
+  // if we can see the doc-scripts.html source, this already means the debugger
+  // is functional.
+  await waitForSources(dbg2, "doc-scripts.html");
+
+  // Wait until codeMirror is rendered before reloading the debugger.
+  await waitFor(() => findElement(dbg2, "codeMirror"));
+
+  info("Reload to check if we hit the breakpoint added in doc-scripts.html");
+  const onReloaded = reload(dbg2);
+
+  await waitForDispatch(dbg2.store, "NAVIGATE");
+  await waitForSelectedSource(dbg2, "doc-scripts.html");
+  await waitForPaused(dbg2);
+
+  const scriptSource = dbg2.selectors.getSelectedSource();
+  assertPausedAtSourceAndLine(dbg2, scriptSource.id, 21);
+  await resume(dbg2);
+
+  info("Wait for reload to complete after resume");
+  await onReloaded;
+});