1 files changed, 62 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_webconsole_batching.js b/devtools/client/webconsole/test/browser/browser_webconsole_batching.js
new file mode 100644
index 0000000000..8c49a003a0
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_webconsole_batching.js
@@ -0,0 +1,62 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Check adding console calls as batch keep the order of the message.
+
+const TEST_URI =
+  "http://example.com/browser/devtools/client/webconsole/" +
+  "test/browser/test-batching.html";
+const {
+  l10n,
+} = require("resource://devtools/client/webconsole/utils/messages.js");
+
+add_task(async function () {
+  const hud = await openNewTabAndConsole(TEST_URI);
+  const messageNumber = 100;
+  await testSimpleBatchLogging(hud, messageNumber);
+  await testBatchLoggingAndClear(hud, messageNumber);
+});
+
+async function testSimpleBatchLogging(hud, messageNumber) {
+  await SpecialPowers.spawn(
+    gBrowser.selectedBrowser,
+    [messageNumber],
+    function (numMessages) {
+      content.wrappedJSObject.batchLog(numMessages);
+    }
+  );
+  const allMessages = await waitFor(async () => {
+    const msgs = await findAllMessagesVirtualized(hud);
+    if (msgs.length == messageNumber) {
+      return msgs;
+    }
+    return null;
+  });
+  for (let i = 0; i < messageNumber; i++) {
+    const node = allMessages[i].querySelector(".message-body");
+    is(
+      node.textContent,
+      i.toString(),
+      `message at index "${i}" is the expected one`
+    );
+  }
+}
+
+async function testBatchLoggingAndClear(hud, messageNumber) {
+  await SpecialPowers.spawn(
+    gBrowser.selectedBrowser,
+    [messageNumber],
+    function (numMessages) {
+      content.wrappedJSObject.batchLogAndClear(numMessages);
+    }
+  );
+  await waitFor(() =>
+    findConsoleAPIMessage(hud, l10n.getStr("consoleCleared"))
+  );
+  ok(true, "console cleared message is displayed");
+
+  const messages = findAllMessages(hud);
+  is(messages.length, 1, "console was cleared as expected");
+}