#208: adds basic TestFX support and an example test

app/pom.xml

@@ -50,6 +50,10 @@
             <groupId>org.openjfx</groupId>
             <artifactId>javafx-controls</artifactId>
         </dependency>
+        <dependency>
+            <groupId>org.testfx</groupId>
+            <artifactId>testfx-core</artifactId>
+        </dependency>
         <dependency>
             <groupId>org.scalatest</groupId>
             <artifactId>scalatest_${scala.major.version}</artifactId>

app/src/test/scala/app/logorrr/HelloButtonSpec.scala

@@ -0,0 +1,38 @@
+package app.logorrr
+
+import app.logorrr.testfx.TestFxSpec
+import javafx.scene.Scene
+import javafx.scene.control.Button
+import javafx.scene.layout.StackPane
+import javafx.stage.Stage
+import org.testfx.api.FxAssert
+import org.testfx.matcher.control.LabeledMatchers
+
+class HelloButtonSpec extends TestFxSpec {
+
+  lazy val button = new Button("click me!")
+
+  override def start(stage: Stage): Unit = {
+    button.setId("myButton")
+    button.setOnAction(_ => button.setText("clicked!"))
+    stage.setScene(new Scene(new StackPane(button), 100, 100))
+    stage.show()
+  }
+
+  "foo" in {
+    FxAssert.verifyThat(button, LabeledMatchers.hasText("click me!"))
+    FxAssert.verifyThat("#myButton", LabeledMatchers.hasText("click me!"))
+    FxAssert.verifyThat(".button", LabeledMatchers.hasText("click me!"))
+  }
+  "click on button" in {
+    // when:
+    clickOn(".button")
+
+    // then:
+    FxAssert.verifyThat(button, LabeledMatchers.hasText("clicked!"))
+    // or (lookup by css id):
+    FxAssert.verifyThat("#myButton", LabeledMatchers.hasText("clicked!"))
+    // or (lookup by css class):
+    FxAssert.verifyThat(".button", LabeledMatchers.hasText("clicked!"))
+  }
+}

app/src/test/scala/app/logorrr/testfx/ApplicationAdapter.scala

@@ -0,0 +1,27 @@
+package app.logorrr.testfx
+
+import javafx.application.Application
+import javafx.stage.Stage
+
+class ApplicationAdapter(val applicationFixture: ApplicationFixture) extends Application {
+
+  @throws[Exception]
+  override def init(): Unit = {
+    applicationFixture.init()
+  }
+
+  @throws[Exception]
+  override def start(primaryStage: Stage): Unit = {
+    applicationFixture.start(primaryStage)
+  }
+
+  @throws[Exception]
+  override def stop(): Unit = {
+    applicationFixture.stop()
+  }
+
+  override def hashCode: Int = applicationFixture.hashCode
+
+  override def equals(obj: Any): Boolean = applicationFixture == obj.asInstanceOf[ApplicationAdapter].applicationFixture
+
+}

app/src/test/scala/app/logorrr/testfx/ApplicationFixture.scala

@@ -0,0 +1,14 @@
+package app.logorrr.testfx
+
+import javafx.stage.Stage
+
+trait ApplicationFixture {
+  @throws[Exception]
+  def init(): Unit
+
+  @throws[Exception]
+  def start(stage: Stage): Unit
+
+  @throws[Exception]
+  def stop(): Unit
+}

app/src/test/scala/app/logorrr/testfx/TestFxSpec.scala

@@ -0,0 +1,51 @@
+package app.logorrr.testfx
+
+import javafx.application.{Application, HostServices, Preloader}
+import javafx.stage.Stage
+import org.scalatest.BeforeAndAfterAll
+import org.scalatest.wordspec.AnyWordSpecLike
+import org.scalatestplus.scalacheck.Checkers
+import org.testfx.api.{FxRobot, FxToolkit}
+
+abstract class TestFxSpec extends FxRobot with AnyWordSpecLike with Checkers with BeforeAndAfterAll with ApplicationFixture {
+  me =>
+
+  override def beforeAll(): Unit = {
+    // Initialize JavaFX Toolkit
+    javafx.application.Platform.startup(() => {})
+    FxToolkit.registerPrimaryStage()
+    FxToolkit.setupApplication(() => new ApplicationAdapter(me))
+
+  }
+
+  override def afterAll(): Unit = {
+    FxToolkit.cleanupAfterTest(me, new ApplicationAdapter(me))
+  }
+
+  def launch(appClass: Class[_ <: Application], appArgs: String*): Application = {
+    FxToolkit.registerPrimaryStage
+    FxToolkit.setupApplication(appClass, appArgs: _*)
+  }
+
+  @throws[Exception]
+  override def init(): Unit = {}
+
+  @throws[Exception]
+  override def start(stage: Stage): Unit = {}
+
+  @throws[Exception]
+  override def stop(): Unit = {}
+
+  @deprecated def getHostServices: HostServices = throw new UnsupportedOperationException
+
+  @deprecated def getParameters: Application.Parameters = throw new UnsupportedOperationException
+
+  @deprecated def notifyPreloader(notification: Preloader.PreloaderNotification): Unit = {
+    throw new UnsupportedOperationException
+  }
+
+}
+
+
+
+

pom.xml

@@ -160,6 +160,12 @@
                 <artifactId>scala-library</artifactId>
                 <version>${scala.version}</version>
             </dependency>
+            <dependency>
+                <groupId>org.testfx</groupId>
+                <artifactId>testfx-core</artifactId>
+                <version>4.0.18</version>
+                <scope>test</scope>
+            </dependency>
             <dependency>
                 <groupId>org.openjfx</groupId>
                 <artifactId>javafx-controls</artifactId>