1 files changed, 58 insertions, 0 deletions
diff --git a/devtools/client/webconsole/test/browser/browser_jsterm_content_defined_helpers.js b/devtools/client/webconsole/test/browser/browser_jsterm_content_defined_helpers.js
new file mode 100644
index 0000000000..b4c4504c84
--- /dev/null
+++ b/devtools/client/webconsole/test/browser/browser_jsterm_content_defined_helpers.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test that using helper functions in jsterm call the global content functions
+// if they are defined.
+
+const PREFIX = "content-";
+const HELPERS = [
+  "$_",
+  "$",
+  "$$",
+  "$0",
+  "$x",
+  "clear",
+  "clearHistory",
+  "copy",
+  "help",
+  "inspect",
+  "keys",
+  "screenshot",
+  "values",
+];
+
+// The page script sets a global function for each known helper (except print).
+const TEST_URI = `data:text/html,<!DOCTYPE html><meta charset=utf8>
+  <script>
+    const helpers = ${JSON.stringify(HELPERS)};
+    for (const helper of helpers) {
+      window[helper] = () => "${PREFIX}" + helper;
+    }
+  </script>`;
+
+add_task(async function () {
+  const hud = await openNewTabAndConsole(TEST_URI);
+  const { jsterm } = hud;
+  const { autocompletePopup } = jsterm;
+
+  for (const helper of HELPERS) {
+    await setInputValueForAutocompletion(hud, helper);
+    const autocompleteItems = getAutocompletePopupLabels(
+      autocompletePopup
+    ).filter(l => l === helper);
+    is(
+      autocompleteItems.length,
+      1,
+      `There's no duplicated "${helper}" item in the autocomplete popup`
+    );
+
+    await executeAndWaitForResultMessage(
+      hud,
+      `${helper}()`,
+      `"${PREFIX + helper}"`
+    );
+    ok(true, `output is correct for ${helper}()`);
+  }
+});