1 files changed, 58 insertions, 0 deletions
diff --git a/browser/base/content/test/statuspanel/head.js b/browser/base/content/test/statuspanel/head.js
new file mode 100644
index 0000000000..23df2e6271
--- /dev/null
+++ b/browser/base/content/test/statuspanel/head.js
@@ -0,0 +1,58 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * Returns a Promise that resolves when a StatusPanel for a
+ * window has finished being shown. Also asserts that the
+ * text content of the StatusPanel matches a value.
+ *
+ * @param win (browser window)
+ *        The window that the StatusPanel belongs to.
+ * @param value (string)
+ *        The value that the StatusPanel should show.
+ * @returns Promise
+ */
+async function promiseStatusPanelShown(win, value) {
+  let panel = win.StatusPanel.panel;
+  info("Waiting to show panel");
+  await BrowserTestUtils.waitForEvent(panel, "transitionend", e => {
+    return (
+      e.propertyName === "opacity" &&
+      win.getComputedStyle(e.target).opacity == "1"
+    );
+  });
+
+  Assert.equal(win.StatusPanel._labelElement.value, value);
+}
+
+/**
+ * Returns a Promise that resolves when a StatusPanel for a
+ * window has finished being hidden.
+ *
+ * @param win (browser window)
+ *        The window that the StatusPanel belongs to.
+ */
+async function promiseStatusPanelHidden(win) {
+  let panel = win.StatusPanel.panel;
+  info("Waiting to hide panel");
+  await new Promise(resolve => {
+    let l = e => {
+      if (
+        e.propertyName === "opacity" &&
+        win.getComputedStyle(e.target).opacity == "0"
+      ) {
+        info("Panel hid after " + e.type + " event");
+        panel.removeEventListener("transitionend", l);
+        panel.removeEventListener("transitioncancel", l);
+        is(
+          getComputedStyle(panel).display,
+          "none",
+          "Should be hidden for good"
+        );
+        resolve();
+      }
+    };
+    panel.addEventListener("transitionend", l);
+    panel.addEventListener("transitioncancel", l);
+  });
+}