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diff --git a/mobile/android/components/extensions/test/mochitest/test_ext_tab_runtimeConnect.html b/mobile/android/components/extensions/test/mochitest/test_ext_tab_runtimeConnect.html
new file mode 100644
index 0000000000..48904c2990
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+++ b/mobile/android/components/extensions/test/mochitest/test_ext_tab_runtimeConnect.html
@@ -0,0 +1,89 @@
+<!DOCTYPE HTML>
+<html>
+<head>
+  <meta charset="utf-8">
+  <title>Tabs runtimeConnect Test</title>
+  <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <script type="text/javascript" src="/tests/SimpleTest/ExtensionTestUtils.js"></script>
+  <script type="text/javascript" src="head.js"></script>
+  <link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+
+<script type="text/javascript">
+"use strict";
+
+add_task(async function() {
+  const win = window.open("http://mochi.test:8888/");
+
+  const extension = ExtensionTestUtils.loadExtension({
+    manifest: {
+      "permissions": ["tabs"],
+    },
+
+    background: function() {
+      const messages_received = [];
+
+      let tabId;
+
+      browser.runtime.onConnect.addListener((port) => {
+        browser.test.assertTrue(!!port, "tab to background port received");
+        browser.test.assertEq("tab-connection-name", port.name, "port name should be defined and equal to connectInfo.name");
+        browser.test.assertTrue(!!port.sender.tab, "port.sender.tab should be defined");
+        browser.test.assertEq(tabId, port.sender.tab.id, "port.sender.tab.id should be equal to the expected tabId");
+
+        port.onMessage.addListener((msg) => {
+          messages_received.push(msg);
+
+          if (messages_received.length == 1) {
+            browser.test.assertEq("tab to background port message", msg, "'tab to background' port message received");
+            port.postMessage("background to tab port message");
+          }
+
+          if (messages_received.length == 2) {
+            browser.test.assertTrue(!!msg.tabReceived, "'background to tab' reply port message received");
+            browser.test.assertEq("background to tab port message", msg.tabReceived, "reply port content contains the message received");
+
+            browser.test.notifyPass("tabRuntimeConnect.pass");
+          }
+        });
+      });
+
+      browser.tabs.create({url: "tab.html"},
+                          (tab) => { tabId = tab.id; });
+    },
+
+    files: {
+      "tab.js": function() {
+        const port = browser.runtime.connect({name: "tab-connection-name"});
+        port.postMessage("tab to background port message");
+        port.onMessage.addListener((msg) => {
+          port.postMessage({tabReceived: msg});
+        });
+      },
+      "tab.html": `
+        <!DOCTYPE html>
+        <html>
+          <head>
+            <title>test tab extension page</title>
+            <meta charset="utf-8">
+            <script src="tab.js" async><\/script>
+          </head>
+          <body>
+            <h1>test tab extension page</h1>
+          </body>
+        </html>
+      `,
+    },
+  });
+
+  await extension.startup();
+  await extension.awaitFinish("tabRuntimeConnect.pass");
+  await extension.unload();
+
+  win.close();
+});
+</script>
+
+</body>
+</html>