1 files changed, 55 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_jsterm_history.js b/devtools/client/webconsole/test/browser/browser_jsterm_history.js
new file mode 100644
index 0000000000..b523f96c9d
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_jsterm_history.js
@@ -0,0 +1,55 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Tests the console history feature accessed via the up and down arrow keys.
+
+"use strict";
+
+const TEST_URI = "data:text/html;charset=UTF-8,<!DOCTYPE html>test";
+const COMMANDS = ["document", "window", "window.location"];
+
+add_task(async function () {
+  const hud = await openNewTabAndConsole(TEST_URI);
+  const { jsterm } = hud;
+  jsterm.focus();
+
+  for (const command of COMMANDS) {
+    info(`Executing command ${command}`);
+    await executeAndWaitForResultMessage(hud, command, "");
+  }
+
+  for (let x = COMMANDS.length - 1; x != -1; x--) {
+    EventUtils.synthesizeKey("KEY_ArrowUp");
+    is(getInputValue(hud), COMMANDS[x], "check history previous idx:" + x);
+  }
+
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  is(getInputValue(hud), COMMANDS[0], "test that item is still index 0");
+
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  is(getInputValue(hud), COMMANDS[0], "test that item is still still index 0");
+
+  for (let i = 1; i < COMMANDS.length; i++) {
+    EventUtils.synthesizeKey("KEY_ArrowDown");
+    is(getInputValue(hud), COMMANDS[i], "check history next idx:" + i);
+  }
+
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  is(getInputValue(hud), "", "check input is empty again");
+
+  // Simulate pressing Arrow_Down a few times and then if Arrow_Up shows
+  // the previous item from history again.
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+
+  is(getInputValue(hud), "", "check input is still empty");
+
+  const idxLast = COMMANDS.length - 1;
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  is(
+    getInputValue(hud),
+    COMMANDS[idxLast],
+    "check history next idx:" + idxLast
+  );
+});