Add test that verifies that used browsers are of expected version. (#…

…4643)

If this fails then we know to check that everything works on the
new versions or do a revert on the browser version.

flow-tests/test-root-context/src/main/java/com/vaadin/flow/VerifyBrowserVersionView.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2000-2017 Vaadin Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not
+ * use this file except in compliance with the License. You may obtain a copy of
+ * the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations under
+ * the License.
+ */
+package com.vaadin.flow;
+
+import com.vaadin.flow.component.html.Div;
+import com.vaadin.flow.component.html.Span;
+import com.vaadin.flow.router.Route;
+import com.vaadin.flow.server.VaadinSession;
+import com.vaadin.flow.server.WebBrowser;
+
+@Route("com.vaadin.flow.VerifyBrowserVersionView")
+public class VerifyBrowserVersionView extends Div {
+
+    public VerifyBrowserVersionView() {
+        WebBrowser browser = VaadinSession.getCurrent().getBrowser();
+        Span userAgent = new Span(browser.getBrowserApplication());
+        userAgent.setId("userAgent");
+
+        Span touchDevice = new Span(
+                "Touch device? " + (browser.isTouchDevice() ? "YES" : "No"));
+        touchDevice.setId("touchDevice");
+
+        add(userAgent, touchDevice);
+    }
+}

flow-tests/test-root-context/src/test/java/com/vaadin/flow/VerifyBrowserVersionIT.java

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+package com.vaadin.flow;
+
+import static org.hamcrest.CoreMatchers.containsString;
+import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.MatcherAssert.assertThat;
+
+import org.junit.Test;
+import org.openqa.selenium.By;
+import org.openqa.selenium.remote.DesiredCapabilities;
+
+import com.vaadin.flow.testutil.ChromeBrowserTest;
+import com.vaadin.testbench.parallel.BrowserUtil;
+
+public class VerifyBrowserVersionIT extends ChromeBrowserTest {
+
+    @Test
+    public void verifyUserAgent() {
+        open();
+
+        DesiredCapabilities desiredCapabilities = getDesiredCapabilities();
+
+        String userAgent = findElement(By.id("userAgent")).getText();
+        String browserIdentifier;
+
+        if (BrowserUtil.isChrome(getDesiredCapabilities())) {
+            // Chrome version does not necessarily match the desired version
+            // because of auto updates...
+            browserIdentifier = getExpectedUserAgentString(
+                    getDesiredCapabilities()) + "69";
+        } else if (BrowserUtil.isFirefox(getDesiredCapabilities())) {
+            browserIdentifier = getExpectedUserAgentString(
+                    getDesiredCapabilities()) + "58";
+        } else {
+            browserIdentifier = getExpectedUserAgentString(desiredCapabilities)
+                    + desiredCapabilities.getVersion();
+        }
+
+        assertThat(userAgent, containsString(browserIdentifier));
+
+        assertThat(findElement(By.id("touchDevice")).getText(),
+                is("Touch device? No"));
+    }
+
+    private String getExpectedUserAgentString(DesiredCapabilities dCap) {
+        if (BrowserUtil.isIE(dCap)) {
+            // IE11
+            return "Trident/7.0; rv:";
+        } else if (BrowserUtil.isFirefox(dCap)) {
+            return "Firefox/";
+        } else if (BrowserUtil.isChrome(dCap)) {
+            return "Chrome/";
+        }
+        throw new UnsupportedOperationException(
+                "Test is being run on unknown browser.");
+    }
+
+}