1 files changed, 50 insertions, 0 deletions
diff --git a/devtools/client/debugger/test/mochitest/browser_dbg_reload-preferred-script-02.js b/devtools/client/debugger/test/mochitest/browser_dbg_reload-preferred-script-02.js
new file mode 100644
index 0000000000..75e7cfc1c0
--- /dev/null
+++ b/devtools/client/debugger/test/mochitest/browser_dbg_reload-preferred-script-02.js
@@ -0,0 +1,50 @@
+/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
+/* vim: set ft=javascript ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Tests if the preferred source is shown when a page is loaded and
+ * the preferred source is specified after another source might have been shown.
+ */
+
+const TAB_URL = EXAMPLE_URL + "doc_script-switching-01.html";
+const PREFERRED_URL = EXAMPLE_URL + "code_script-switching-02.js";
+
+var gTab, gPanel, gDebugger;
+var gSources;
+
+function test() {
+  let options = {
+    source: EXAMPLE_URL + "code_script-switching-01.js",
+    line: 1
+  };
+  initDebugger(TAB_URL, options).then(([aTab,, aPanel]) => {
+    gTab = aTab;
+    gPanel = aPanel;
+    gDebugger = gPanel.panelWin;
+    gSources = gDebugger.DebuggerView.Sources;
+
+    waitForSourceShown(gPanel, PREFERRED_URL).then(finishTest);
+    gSources.preferredSource = getSourceActor(gSources, PREFERRED_URL);
+  });
+}
+
+function finishTest() {
+  info("Currently preferred source: " + gSources.preferredValue);
+  info("Currently selected source: " + gSources.selectedValue);
+
+  is(getSourceURL(gSources, gSources.preferredValue), PREFERRED_URL,
+    "The preferred source url wasn't set correctly.");
+  is(getSourceURL(gSources, gSources.selectedValue), PREFERRED_URL,
+    "The selected source isn't the correct one.");
+
+  closeDebuggerAndFinish(gPanel);
+}
+
+registerCleanupFunction(function () {
+  gTab = null;
+  gPanel = null;
+  gDebugger = null;
+  gSources = null;
+});