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/DropDownListTest.java

Index: android_webview/tools/automated_ui_tests/javatests/src/org/chromium/webview_ui_test/test/DropDownListTest.java
diff --git a/android_webview/tools/automated_ui_tests/javatests/src/org/chromium/webview_ui_test/test/DropDownListTest.java b/android_webview/tools/automated_ui_tests/javatests/src/org/chromium/webview_ui_test/test/DropDownListTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..2643721051acf55b7eb85d19d3f104571a5ff8b1
--- /dev/null
+++ b/android_webview/tools/automated_ui_tests/javatests/src/org/chromium/webview_ui_test/test/DropDownListTest.java
@@ -0,0 +1,161 @@
+// 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;
+
+import static android.support.test.espresso.Espresso.onView;
+import static android.support.test.espresso.action.ViewActions.click;
+import static android.support.test.espresso.matcher.RootMatchers.withDecorView;
+import static android.support.test.espresso.matcher.ViewMatchers.isEnabled;
+import static android.support.test.espresso.matcher.ViewMatchers.withId;
+import static android.support.test.espresso.matcher.ViewMatchers.withText;
+import static android.support.test.espresso.web.assertion.WebViewAssertions.webMatches;
+import static android.support.test.espresso.web.sugar.Web.onWebView;
+import static android.support.test.espresso.web.webdriver.DriverAtoms.findElement;
+
+import static org.hamcrest.CoreMatchers.is;
+import static org.junit.Assert.assertEquals;
+
+import android.graphics.Point;
+import android.support.test.espresso.web.sugar.Web;
+import android.support.test.espresso.web.webdriver.Locator;
+import android.test.suitebuilder.annotation.SmallTest;
+import android.view.View;
+import android.webkit.WebView;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.chromium.base.test.BaseJUnit4ClassRunner;
+import org.chromium.webview_ui_test.R;
+import org.chromium.webview_ui_test.WebViewUiTestActivity;
+import org.chromium.webview_ui_test.test.util.Actions;
+import org.chromium.webview_ui_test.test.util.Atoms;
+import org.chromium.webview_ui_test.test.util.UseLayout;
+import org.chromium.webview_ui_test.test.util.WebViewUiTestRule;
+
+
+/**
+ * Tests for WebView ActionMode.
+ */
+@RunWith(BaseJUnit4ClassRunner.class)
+public class DropDownListTest {
+    @Rule
+    public WebViewUiTestRule mWebViewActivityRule = new WebViewUiTestRule(
+            WebViewUiTestActivity.class);
+
+    private static final String AFTER_VALUE = "Value2";
+    private static final String BEFORE_VALUE = "Value1";
+    private static final String HTML_NON_SCALED = "webview_nonscaled.html";
+    private static final String HTML_SCALED = "webview_scaled.html";
+    private static final String HTML_SCROLL = "webview_scroll.html";
+
+    @Before
+    public void setUp() {
+        mWebViewActivityRule.launchActivity();
+        onWebView().forceJavascriptEnabled();
+    }
+
+    /**
+     * Test Drop Down List works in ViewPort Scale Factor = 1
+     */
+    @Test
+    @SmallTest
+    @UseLayout("edittext_webview")
+    public void testDropDownNonScaledViewPort() {
+        mWebViewActivityRule.loadFileSync(HTML_NON_SCALED, false);
+        changeAllSelectValues();
+    }
+
+    /**
+     * Test Drop Down List works in ViewPort Scale Factor > 1
+     */
+    @Test
+    @SmallTest
+    @UseLayout("edittext_webview")
+    public void testDropDownScaledViewPort() {
+        mWebViewActivityRule.loadFileSync(HTML_SCALED, false);
+        changeAllSelectValues();
+    }
+
+    /**
+     * Test Drop Down List works in ViewPort Scale Factor > 1 in wideViewPortMode
+     */
+    @Test
+    @SmallTest
+    @UseLayout("edittext_webview")
+    public void testDropDownScaledViewPortUseWideViewPort() {
+        onView(withId(R.id.webview)).perform(Actions.setUseWideViewPort());
+        mWebViewActivityRule.loadFileSync(HTML_SCALED, false);
+        WebView webView = (WebView) mWebViewActivityRule.getActivity()
+                .findViewById(R.id.webview);
+        int w = webView.getWidth();
+        int h = webView.getHeight();
+        changeSelectValue("select1");
+        onView(withId(R.id.webview)).perform(Actions.scrollBy(w, 0));
+        changeSelectValue("select2");
+        onView(withId(R.id.webview)).perform(Actions.scrollBy(0, h));
+        changeSelectValue("select3");
+        onView(withId(R.id.webview)).perform(Actions.scrollBy(-w, 0));
+        changeSelectValue("select4");
+    }
+
+    /**
+     * Test that WebView does not scroll when a drop down menu is selected
+     */
+    @Test
+    @SmallTest
+    @UseLayout("edittext_webview")
+    public void testSelectNoScroll() {
+        mWebViewActivityRule.loadFileSync(HTML_SCROLL, false);
+        WebView webView = (WebView) mWebViewActivityRule.getActivity()
+                .findViewById(R.id.webview);
+        int w = webView.getWidth();
+        int h = webView.getHeight();
+        onView(withId(R.id.webview)).perform(Actions.scrollBy(w, h));
+        Point beforeSelectScroll = getScroll((WebView) mWebViewActivityRule
+                .getActivity().findViewById(R.id.webview));
+        changeSelectValue("select");
+        Point afterSelectScroll = getScroll((WebView) mWebViewActivityRule
+                .getActivity().findViewById(R.id.webview));
+        assertEquals("Scroll should not move after clicking select element",
+                beforeSelectScroll, afterSelectScroll);
+    }
+
+    /**
+     * Get the scroll position of the view
+     */
+    private Point getScroll(View v) {
+        int x, y;
+        x = v.getScrollX();
+        y = v.getScrollY();
+        return new Point(x, y);
+    }
+
+    /**
+     * Change all select box values
+     */
+    private void changeAllSelectValues() {
+        changeSelectValue("select1");
+        changeSelectValue("select2");
+        changeSelectValue("select3");
+        changeSelectValue("select4");
+    }
+
+    /**
+     * Change select box value from Value1 to Value2
+     */
+    private void changeSelectValue(String id) {
+        Web.WebInteraction<Void> selectElement =

[the real yoland, 2016/12/16 18:04:42]

nit: what I meant last time for this is to change not save selectElement,
rather, do `onWebView().withElement(findElement(Locator.ID, id))` every time
when this element is needed. But that's just my interpretation of how espresso
are meant to be like (because things might change before and after
`onView(withTest)...perform(click())` for selectElement)

+                onWebView().withElement(findElement(Locator.ID, id));
+        selectElement.check(webMatches(Atoms.currentSelection(),
+                is(BEFORE_VALUE)));
+        selectElement.perform(Atoms.webSelect());
+        onView(withText(AFTER_VALUE)).inRoot(withDecorView(isEnabled())).perform(click());
+        selectElement.check(webMatches(Atoms.currentSelection(),
+                is(AFTER_VALUE)));
+    }
+}