1 files changed, 84 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_jsterm_add_edited_input_to_history.js b/devtools/client/webconsole/test/browser/browser_jsterm_add_edited_input_to_history.js
new file mode 100644
index 0000000000..8b9660f9e2
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_jsterm_add_edited_input_to_history.js
@@ -0,0 +1,84 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Test that user input that is not submitted in the command line input is not
+// lost after navigating in history.
+// See https://bugzilla.mozilla.org/show_bug.cgi?id=817834
+
+"use strict";
+
+const TEST_URI =
+  "data:text/html;charset=utf-8,<!DOCTYPE html>Web Console test for bug 817834";
+
+add_task(async function () {
+  const hud = await openNewTabAndConsole(TEST_URI);
+
+  ok(!getInputValue(hud), "console input is empty");
+  checkInputCursorPosition(hud, 0, "Cursor is at expected position");
+
+  setInputValue(hud, '"first item"');
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  is(getInputValue(hud), '"first item"', "null test history up");
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  is(getInputValue(hud), '"first item"', "null test history down");
+
+  EventUtils.synthesizeKey("KEY_Enter");
+  await waitFor(() => findEvaluationResultMessage(hud, "first item"));
+  is(getInputValue(hud), "", "cleared input line after submit");
+
+  setInputValue(hud, '"editing input 1"');
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  is(getInputValue(hud), '"first item"', "test history up");
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  is(
+    getInputValue(hud),
+    '"editing input 1"',
+    "test history down restores in-progress input"
+  );
+
+  setInputValue(hud, '"second item"');
+  EventUtils.synthesizeKey("KEY_Enter");
+  await waitFor(() => findEvaluationResultMessage(hud, "second item"));
+
+  setInputValue(hud, '"editing input 2"');
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  is(getInputValue(hud), '"second item"', "test history up");
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  is(getInputValue(hud), '"first item"', "test history up");
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  is(getInputValue(hud), '"second item"', "test history down");
+  EventUtils.synthesizeKey("KEY_ArrowDown");
+  is(
+    getInputValue(hud),
+    '"editing input 2"',
+    "test history down restores new in-progress input again"
+  );
+
+  // Appending the same value again should not impact the history.
+  // Let's also use some spaces around to check that the input value
+  // is properly trimmed.
+  setInputValue(hud, '"second item"');
+  EventUtils.synthesizeKey("KEY_Enter");
+  await waitFor(
+    () => findEvaluationResultMessages(hud, "second item").length == 2
+  );
+
+  setInputValue(hud, '"second item"    ');
+  EventUtils.synthesizeKey("KEY_Enter");
+  await waitFor(
+    () => findEvaluationResultMessages(hud, "second item").length == 3
+  );
+
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  is(
+    getInputValue(hud),
+    '"second item"',
+    "test history up reaches duplicated entry just once"
+  );
+  EventUtils.synthesizeKey("KEY_ArrowUp");
+  is(
+    getInputValue(hud),
+    '"first item"',
+    "test history up reaches the previous value"
+  );
+});