[AudioPlayer] Add test for opening another file from Files.app

chrome/browser/resources/file_manager/background/js/test_util.js

Index: chrome/browser/resources/file_manager/background/js/test_util.js
diff --git a/chrome/browser/resources/file_manager/background/js/test_util.js b/chrome/browser/resources/file_manager/background/js/test_util.js
index 075bb3fe09641a0df0540e7c4e1c2169196b2e32..ffb1fb8c7a42a21913ee994cc87e965582553a4c 100644
--- a/chrome/browser/resources/file_manager/background/js/test_util.js
+++ b/chrome/browser/resources/file_manager/background/js/test_util.js
@@ -111,6 +111,31 @@ test.util.async.waitForWindow = function(appIdPrefix, callback) {
 };
 
 /**
+ * Close the specified window and wait until it closes.

[hirono, 2014/03/04 09:14:13]

nit: Closes

[yoshiki, 2014/03/05 02:24:44]

Done.

+ *
+ * @param {string} appId AppId of window to be closed.
+ * @param {function(boolean)} callback Completion callback with the result. True
+ * if success, false otherwise.
+ */
+test.util.async.closeWindow = function(appId, callback) {
+  if (appId in background.appWindows &&
+      background.appWindows[appId].contentWindow) {
+    background.appWindows[appId].close();
+
+    test.util.repeatUntilTrue_(function() {
+      if (appId in background.appWindows) {
+        return false;
+      } else {
+        callback(true);
+        return true;
+      }
+    });
+  } else {
+    callback(false);
+  }
+};
+
+/**
  * Gets a document in the Files.app's window, including iframes.
  *
  * @param {Window} contentWindow Window to be used.