Experimental support for headless JavaFX tests using Monocle

.gitlab-ci.yml

-image: kaiwinter/docker-java8-maven
+image: krissrex/docker-java8-maven-testfxmonocle:1.0
+# image: kaiwinter/docker-java8-maven
 # image: maven:3.3.9-jdk-8
 
 # most of this taken from https://stackoverflow.com/questions/37785154/how-to-enable-maven-artifact-caching-for-gitlab-ci-runner
@@ -11,7 +12,7 @@ cache:
 
 variables:
   MAVEN_OPTS: "-Djava.awt.headless=true -Dmaven.repo.local=.m2/repository"
-  MAVEN_CLI_OPTS: "--batch-mode --errors --fail-at-end --show-version -Dskip-ui-tests=true"
+  MAVEN_CLI_OPTS: "--batch-mode --errors --fail-at-end --show-version -Dgitlab-ci=true
 
 build-job:
   stage: build

tdt4140-gr1800/app.ui/pom.xml

@@ -9,6 +9,31 @@
 		<version>0.0.1-SNAPSHOT</version>
 	</parent>
 
+	<profiles>
+		<profile>
+			<id>gitlab-ci</id>
+			<activation>
+				<property>
+					<name>gitlab-ci</name>
+					<value>true</value>
+				</property>
+			</activation>
+			<!-- 
+			<properties>
+				<skip-ui-tests>true</skip-ui-tests>
+			</properties>
+			 -->
+			<dependencies>
+				<dependency>
+		            <groupId>org.testfx</groupId>
+		            <artifactId>openjfx-monocle</artifactId>
+		            <version>8u76-b04</version> <!-- jdk-9+181 for Java 9 -->
+		            <scope>test</scope>
+		        </dependency>
+			</dependencies>
+		</profile>
+	</profiles>
+
 	<dependencies>
 		<dependency>
 			<groupId>tdt4140-gr1800</groupId>
@@ -49,10 +74,6 @@
 		</dependency>
 	</dependencies>
 
-	<properties>
-		<skip-ui-tests>false</skip-ui-tests>
-	</properties>
-
 	<build>
 		<plugins>
 			<plugin>

tdt4140-gr1800/app.ui/src/test/java/tdt4140/gr1800/app/ui/FxAppTest.java

 package tdt4140.gr1800.app.ui;
 
 import org.junit.Assert;
+import org.junit.BeforeClass;
 import org.junit.Test;
 import org.testfx.framework.junit.ApplicationTest;
 
@@ -13,6 +14,13 @@ import javafx.stage.Stage;
 
 public class FxAppTest extends ApplicationTest {
 
+    @BeforeClass
+    public static void headless() {
+    		if (Boolean.valueOf(System.getProperty("gitlab-ci", "false"))) {
+    			GitlabCISupport.headless();
+    		}
+    }
+
 	@Override
     public void start(Stage stage) throws Exception {
         Parent root = FXMLLoader.load(getClass().getResource("FxApp.fxml"));

tdt4140-gr1800/app.ui/src/test/java/tdt4140/gr1800/app/ui/GitlabCISupport.java

+package tdt4140.gr1800.app.ui;
+
+public class GitlabCISupport {
+
+    public static void headless() {
+        System.setProperty("prism.verbose", "true"); // optional
+        System.setProperty("java.awt.headless", "true");
+        System.setProperty("testfx.robot", "glass");
+        System.setProperty("testfx.headless", "true");
+        System.setProperty("glass.platform", "Monocle");
+        System.setProperty("monocle.platform", "Headless");
+        System.setProperty("prism.order", "sw");
+        System.setProperty("prism.text", "t2k");
+        System.setProperty("testfx.setup.timeout", "2500");
+    }
+}