1 files changed, 122 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_webconsole_clear_cache.js b/devtools/client/webconsole/test/browser/browser_webconsole_clear_cache.js
new file mode 100644
index 0000000000..5b0ccda4d6
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_webconsole_clear_cache.js
@@ -0,0 +1,122 @@
+/* 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/. */
+
+// Check that clearing the output also clears the console cache.
+
+"use strict";
+
+const TEST_URI =
+  "data:text/html;charset=utf8,<!DOCTYPE html>Test clear cache<script>abcdef</script>";
+const EXPECTED_REPORT = "ReferenceError: abcdef is not defined";
+
+add_task(async function () {
+  const tab = await addTab(TEST_URI);
+  let hud = await openConsole(tab);
+
+  const CACHED_MESSAGE = "CACHED_MESSAGE";
+  await logTextToConsole(hud, CACHED_MESSAGE);
+
+  info("Close and re-open the console");
+  await closeToolbox();
+  hud = await openConsole(tab);
+
+  await waitFor(() => findErrorMessage(hud, EXPECTED_REPORT));
+  await waitFor(() => findConsoleAPIMessage(hud, CACHED_MESSAGE));
+
+  info(
+    "Click the clear output button and wait until there's no messages in the output"
+  );
+  let onMessagesCacheCleared = hud.ui.once("messages-cache-cleared");
+  hud.ui.window.document.querySelector(".devtools-clear-icon").click();
+  await onMessagesCacheCleared;
+
+  info("Close and re-open the console");
+  await closeToolbox();
+  hud = await openConsole(tab);
+
+  info("Log a smoke message in order to know that the console is ready");
+  await logTextToConsole(hud, "Smoke message");
+  is(
+    findConsoleAPIMessage(hud, CACHED_MESSAGE),
+    undefined,
+    "The cached message is not visible anymore"
+  );
+  is(
+    findErrorMessage(hud, EXPECTED_REPORT),
+    undefined,
+    "The cached error message is not visible anymore as well"
+  );
+
+  // Test that we also clear the cache when calling console.clear().
+  const NEW_CACHED_MESSAGE = "NEW_CACHED_MESSAGE";
+  await logTextToConsole(hud, NEW_CACHED_MESSAGE);
+
+  info("Send a console.clear() from the content page");
+  onMessagesCacheCleared = hud.ui.once("messages-cache-cleared");
+  const onConsoleCleared = waitForMessageByType(
+    hud,
+    "Console was cleared",
+    ".console-api"
+  );
+  SpecialPowers.spawn(gBrowser.selectedBrowser, [], () => {
+    content.wrappedJSObject.console.clear();
+  });
+  await Promise.all([onConsoleCleared, onMessagesCacheCleared]);
+
+  info("Close and re-open the console");
+  await closeToolbox();
+  hud = await openConsole(tab);
+
+  info("Log a smoke message in order to know that the console is ready");
+  await logTextToConsole(hud, "Second smoke message");
+  is(
+    findConsoleAPIMessage(hud, NEW_CACHED_MESSAGE),
+    undefined,
+    "The new cached message is not visible anymore"
+  );
+});
+
+add_task(async function consoleClearPersist() {
+  // persist logs
+  await pushPref("devtools.webconsole.persistlog", true);
+  const tab = await addTab(TEST_URI);
+  let hud = await openConsole(tab);
+
+  // Test that we also clear the cache when calling console.clear().
+  const CACHED_MESSAGE = "CACHED_MESSAGE_PERSIST";
+  await logTextToConsole(hud, CACHED_MESSAGE);
+
+  info("Send a console.clear() from the content page");
+
+  const onConsoleClearPrevented = waitForMessageByType(
+    hud,
+    "console.clear() was prevented",
+    ".console-api"
+  );
+  SpecialPowers.spawn(gBrowser.selectedBrowser, [], () => {
+    content.wrappedJSObject.console.clear();
+  });
+
+  await onConsoleClearPrevented;
+
+  info("Close and re-open the console");
+  await closeToolbox();
+  hud = await openConsole(tab);
+
+  info("Log a smoke message in order to know that the console is ready");
+  await logTextToConsole(hud, "smoke message for persist");
+  is(
+    findConsoleAPIMessage(hud, CACHED_MESSAGE),
+    undefined,
+    "The cached message is not visible anymore"
+  );
+});
+
+function logTextToConsole(hud, text) {
+  const onMessage = waitForMessageByType(hud, text, ".console-api");
+  SpecialPowers.spawn(gBrowser.selectedBrowser, [text], function (str) {
+    content.wrappedJSObject.console.log(str);
+  });
+  return onMessage;
+}