serve test pages via HTTP, not file system

Serve integration test pages via Jetty instead of reading them from the file
system. The network abstraction makes the tests OS-independent and will allow
us to run the tests against selenium docker containers instead of local browser
installations.

Author: Axel Schüssler

pom.xml

@@ -67,6 +67,8 @@
 		<version.mockito>1.10.19</version.mockito>
 		<version.checkstyle>6.9</version.checkstyle>
 
+		<version.jetty-server>9.4.0.M0</version.jetty-server>
+
 		<version.selenium>2.53.0</version.selenium>
 
 		<version.slf4j>1.7.12</version.slf4j>
@@ -238,6 +240,12 @@
 				<version>${version.checkstyle}</version>
 			</dependency>
 
+			<dependency>
+				<groupId>org.eclipse.jetty</groupId>
+				<artifactId>jetty-server</artifactId>
+				<version>${version.jetty-server}</version>
+			</dependency>
+
 		</dependencies>
 	</dependencyManagement>
 

webtester-core/pom.xml

@@ -60,6 +60,11 @@
 			<artifactId>selenium-firefox-driver</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>org.eclipse.jetty</groupId>
+			<artifactId>jetty-server</artifactId>
+			<scope>test</scope>
+		</dependency>
 
 	</dependencies>
 

webtester-core/src/test/java/integration/BaseIntegrationTest.java

@@ -4,6 +4,9 @@
 
 import java.io.File;
 
+import org.eclipse.jetty.server.Server;
+import org.eclipse.jetty.server.handler.ResourceHandler;
+import org.junit.AfterClass;
 import org.junit.Before;
 import org.junit.BeforeClass;
 
@@ -21,15 +24,37 @@
 @NoArgsConstructor(access = AccessLevel.PROTECTED)
 public class BaseIntegrationTest {
 
+    private static final String TEST_PAGE_SERVER_HOST = System.getProperty("testPageServerHost", "localhost");
+
+    private static final int TEST_PAGE_SERVER_PORT = Integer.parseInt(System.getProperty("testPageServerPort", "8080"));
+
+    private static final String TEST_PAGE_SERVER_BASE_ADDRESS = String.format("http://%s:%d/", TEST_PAGE_SERVER_HOST, TEST_PAGE_SERVER_PORT);
+
+    private static Server server;
+
     private static Browser browser;
 
     @BeforeClass
-    public static void setUpBeforeClass() {
+    public static void setupBrowser() {
         if (browser == null) {
             browser = new TestBrowserFactory().createBrowser();
         }
     }
 
+    @BeforeClass
+    public static void startTestPageServer() throws Exception {
+        server = new Server(TEST_PAGE_SERVER_PORT);
+        ResourceHandler resourceHandler = new ResourceHandler();
+        resourceHandler.setResourceBase(getTestResourceFolder().getCanonicalPath());
+        server.setHandler(resourceHandler);
+        server.start();
+    }
+
+    @AfterClass
+    public static void stopTestPageServer() throws Exception {
+        server.stop();
+    }
+
     @Before
     public final void navigateToTestURL() {
         String htmlFilePath = getHTMLFilePath();
@@ -79,18 +104,13 @@ protected EventSystem eventSystem(){
     }
 
     protected static String getUrlFor(String fileName) {
+        assertThatFileResourceExists(fileName);
+        return TEST_PAGE_SERVER_BASE_ADDRESS + fileName;
+    }
 
-        File testResourceFolder = getTestResourceFolder();
-        File testResourceFile = new File(testResourceFolder, fileName);
-
+    private static void assertThatFileResourceExists(String fileName) {
+        File testResourceFile = new File(getTestResourceFolder(), fileName);
         assertThat(testResourceFile.isFile()).withFailMessage("file not found: " + testResourceFile).isTrue();
-
-        String systemDependentPath = testResourceFile.getAbsolutePath();
-        String replacedBackslashes = systemDependentPath.replaceAll("\\\\", "/");
-        String replacedWhitespaces = replacedBackslashes.replaceAll(" ", "%20");
-
-        return "file:///" + replacedWhitespaces;
-
     }
 
     private static File getTestResourceFolder() {