From cf03d278eb8bb8f7544ae6395b76e1a1e0781053 Mon Sep 17 00:00:00 2001
From: Shin'ya Ueoka <ueokande@i-beam.org>
Date: Mon, 12 Feb 2018 21:45:47 +0900
Subject: [PATCH] add util to wait for tab loading

---
 e2e/ambassador/src/background/tabs.js | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 e2e/ambassador/src/background/tabs.js

diff --git a/e2e/ambassador/src/background/tabs.js b/e2e/ambassador/src/background/tabs.js
new file mode 100644
index 0000000..93d47a3
--- /dev/null
+++ b/e2e/ambassador/src/background/tabs.js
@@ -0,0 +1,18 @@
+const create = (props = {}) => {
+  return new Promise((resolve) => {
+    browser.tabs.create(props).then((createdTab) => {
+      let callback = (tabId, changeInfo, tab) => {
+        if (tab.url !== 'about:blank' && tabId === createdTab.id &&
+            changeInfo.status === 'complete') {
+          browser.tabs.onUpdated.removeListener(callback);
+          resolve(tab);
+        }
+      };
+      browser.tabs.onUpdated.addListener(callback);
+    });
+  });
+};
+
+export {
+  create,
+};