1 files changed, 35 insertions, 0 deletions
diff --git a/tools/addon-sdk-1.3/packages/api-utils/tests/test-tab-observer.js b/tools/addon-sdk-1.3/packages/api-utils/tests/test-tab-observer.js
new file mode 100644
index 0000000..d8e6a0a
--- /dev/null
+++ b/tools/addon-sdk-1.3/packages/api-utils/tests/test-tab-observer.js
@@ -0,0 +1,35 @@
+"use strict";
+
+const { openTab, closeTab } = require("api-utils/tabs/utils");
+
+exports["test unload tab observer"] = function(assert, done) {
+  // Hacky way to be able to create unloadable modules via makeSandboxedLoader.
+  let loader = assert._log.makeSandboxedLoader();
+
+
+  let window = loader.require("api-utils/window-utils").activeBrowserWindow;
+  let observer = loader.require("api-utils/tabs/observer").observer;
+  let opened = 0;
+  let closed = 0;
+
+  observer.on("open", function onOpen(window) { opened++; });
+  observer.on("close", function onClose(window) { closed++; });
+
+  // Open and close tab to trigger observers.
+  closeTab(openTab(window, "data:text/html,tab-1"));
+
+  // Unload the module so that all listeners set by observer are removed.
+  loader.unload();
+
+  // Open and close tab once again.
+  closeTab(openTab(window, "data:text/html,tab-2"));
+
+  // Enqueuing asserts to make sure that assertion is not performed early.
+  require("timer").setTimeout(function () {
+    assert.equal(1, opened, "observer open was called before unload only");
+    assert.equal(1, closed, "observer close was called before unload only");
+    done();
+  }, 0);
+};
+
+require("test").run(exports);