Add validation test for groovy.lang.Delegate (bazel-contrib#861)

Author: Jan Wloka

org.jacoco.core.test.validation.groovy/src/org/jacoco/core/test/validation/groovy/GroovyDelegateClassTest.java

@@ -0,0 +1,30 @@
+/*******************************************************************************
+ * Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Jan Wloka - initial API and implementation
+ *
+ *******************************************************************************/
+package org.jacoco.core.test.validation.groovy;
+
+import org.jacoco.core.test.validation.ValidationTestBase;
+import org.jacoco.core.test.validation.groovy.targets.GroovyDelegateClassTarget;
+import org.junit.Test;
+
+/**
+ * Test of class with field annotated by {@link groovy.lang.Delegate}.
+ */
+public class GroovyDelegateClassTest extends ValidationTestBase {
+    public GroovyDelegateClassTest() {
+        super(GroovyDelegateClassTarget.class);
+    }
+
+    @Test
+    public void test_method_count() {
+        assertMethodCount(4);
+    }
+}

org.jacoco.core.test.validation.groovy/src/org/jacoco/core/test/validation/groovy/targets/GroovyDelegateClassTarget.groovy

@@ -0,0 +1,36 @@
+/*******************************************************************************
+ * Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *    Jan Wloka - initial API and implementation
+ *
+ *******************************************************************************/
+package org.jacoco.core.test.validation.groovy.targets
+
+class GroovyDelegateClassTarget { // assertEmpty()
+
+    static class D {
+        void m1() {
+        } // assertFullyCovered()
+
+        void m2() {
+        } // assertFullyCovered()
+    }
+
+    @Delegate
+    D delegate = new D() // assertEmpty()
+
+    void m2() {
+        delegate.m2() // assertFullyCovered()
+    }
+
+    static void main(String[] args) {
+        new GroovyDelegateClassTarget().m1()
+        new GroovyDelegateClassTarget().m2()
+    }
+
+}