Adding WebView select tests to test select element's dropdown menu

android_webview/tools/automated_ui_tests/javatests/src/org/chromium/webview_ui_test/test/util/Atoms.java

Index: android_webview/tools/automated_ui_tests/javatests/src/org/chromium/webview_ui_test/test/util/Atoms.java
diff --git a/android_webview/tools/automated_ui_tests/javatests/src/org/chromium/webview_ui_test/test/util/Atoms.java b/android_webview/tools/automated_ui_tests/javatests/src/org/chromium/webview_ui_test/test/util/Atoms.java
new file mode 100644
index 0000000000000000000000000000000000000000..9f9cd01a9b40f2784f3d7f5391d80fa50c590374
--- /dev/null
+++ b/android_webview/tools/automated_ui_tests/javatests/src/org/chromium/webview_ui_test/test/util/Atoms.java
@@ -0,0 +1,39 @@
+// Copyright 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.webview_ui_test.test.util;
+
+import static android.support.test.espresso.web.model.Atoms.castOrDie;
+
+import android.support.test.espresso.web.model.Atom;
+import android.support.test.espresso.web.model.Evaluation;
+import android.support.test.espresso.web.model.SimpleAtom;
+import android.support.test.espresso.web.model.TransformingAtom;
+
+/**
+ * A collection of Javascript Atoms for WebView testing
+ */
+public class Atoms {
+    /**
+     * Click on a select element in HTML
+     */
+    public static SimpleAtom webSelect() {
+        return new SimpleAtom(
+                  "function(webElement) {"
+                + "  var e = document.createEvent('MouseEvents');"
+                + "  e.initMouseEvent('mousedown', true, true, window, 0, 0, 0, 0, 0,"
+                + "      false, false, false, false, 0, null);"
+                + "  webElement.dispatchEvent(e);"
+                + "}");
+    }
+
+    /**
+     * Returns an Atom that represents the text in the select element's currently selected item
+     */
+    public static Atom<String> currentSelection() {
+        return new TransformingAtom<Evaluation, String>(
+                new SimpleAtom("function(e) {return e.options[e.selectedIndex].text;}"),
+                castOrDie(String.class));
+    }
+}