1 files changed, 65 insertions, 0 deletions
diff --git a/devtools/client/aboutdebugging/test/browser/browser_aboutdebugging_addons_temporary_install_path.js b/devtools/client/aboutdebugging/test/browser/browser_aboutdebugging_addons_temporary_install_path.js
new file mode 100644
index 0000000000..a6f9fde0c1
--- /dev/null
+++ b/devtools/client/aboutdebugging/test/browser/browser_aboutdebugging_addons_temporary_install_path.js
@@ -0,0 +1,65 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+/* import-globals-from helper-addons.js */
+Services.scriptloader.loadSubScript(CHROME_URL_ROOT + "helper-addons.js", this);
+
+/**
+ * Test the the path used to install a temporary addon is saved in a preference and reused
+ * next time the feature is used.
+ */
+
+const EXTENSION_PATH = "resources/test-temporary-extension/manifest.json";
+const EXTENSION_NAME = "test-temporary-extension";
+const LAST_DIR_PREF = "devtools.aboutdebugging.tmpExtDirPath";
+
+// Check that the preference is updated when trying to install a temporary extension.
+add_task(async function testPreferenceUpdatedAfterInstallingExtension() {
+  registerCleanupFunction(() => {
+    Services.prefs.clearUserPref(LAST_DIR_PREF);
+  });
+  const { document, tab, window } = await openAboutDebugging();
+  await selectThisFirefoxPage(document, window.AboutDebugging.store);
+
+  await installTemporaryExtension(EXTENSION_PATH, EXTENSION_NAME, document);
+
+  info("Check whether the selected dir sets into the pref");
+  const lastDirPath = Services.prefs.getCharPref(LAST_DIR_PREF, "");
+  const expectedPath = getTestFilePath("resources/test-temporary-extension");
+  is(lastDirPath, expectedPath, "The selected dir should set into the pref");
+
+  await waitUntil(() => findDebugTargetByText(EXTENSION_NAME, document));
+  await removeTemporaryExtension(EXTENSION_NAME, document);
+  await removeTab(tab);
+});
+
+// Check that the preference is updated when trying to install a temporary extension.
+add_task(async function testPreferenceRetrievedWhenInstallingExtension() {
+  const selectedDir = getTestFilePath("resources/packaged-extension");
+
+  await pushPref(LAST_DIR_PREF, selectedDir);
+
+  const { document, tab, window } = await openAboutDebugging();
+  await selectThisFirefoxPage(document, window.AboutDebugging.store);
+
+  const MockFilePicker = SpecialPowers.MockFilePicker;
+  MockFilePicker.init(window);
+  const onFilePickerShown = new Promise(resolve => {
+    MockFilePicker.showCallback = fp => {
+      resolve(fp);
+    };
+  });
+  document.querySelector(".qa-temporary-extension-install-button").click();
+
+  info("Check whether the shown dir is same as the pref");
+  const fp = await onFilePickerShown;
+  is(
+    fp.displayDirectory.path,
+    selectedDir,
+    "Shown directory sets as same as the pref"
+  );
+
+  await removeTab(tab);
+});