(WIP) add unit test

org.jacoco.core.test/src/org/jacoco/core/internal/analysis/filter/KotlinDefaultArgumentsFilterTest.java

@@ -0,0 +1,70 @@
+/*******************************************************************************
+ * Copyright (c) 2009, 2018 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:
+ *    Evgeny Mandrikov - initial API and implementation
+ *
+ *******************************************************************************/
+package org.jacoco.core.internal.analysis.filter;
+
+import org.jacoco.core.internal.instr.InstrSupport;
+import org.junit.Test;
+import org.objectweb.asm.Label;
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.tree.MethodNode;
+
+public class KotlinDefaultArgumentsFilterTest extends FilterTestBase {
+
+	private static MethodNode createMethod() {
+		final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION,
+				Opcodes.ACC_SYNTHETIC, "origin$default",
+				"(LTarget;IILjava/lang/Object;)V", null, null);
+
+		m.visitVarInsn(Opcodes.ILOAD, 2);
+		m.visitInsn(Opcodes.ICONST_1);
+		m.visitInsn(Opcodes.IAND);
+		final Label label = new Label();
+		m.visitJumpInsn(Opcodes.IFEQ, label);
+		// default argument
+		m.visitLdcInsn(42);
+		m.visitVarInsn(Opcodes.ISTORE, 1);
+		m.visitLabel(label);
+
+		m.visitVarInsn(Opcodes.ALOAD, 0);
+		m.visitVarInsn(Opcodes.ILOAD, 1);
+		m.visitMethodInsn(Opcodes.INVOKESPECIAL, "Target", "origin", "(I)V",
+				false);
+		m.visitInsn(Opcodes.RETURN);
+
+		return m;
+	}
+
+	@Test
+	public void should_filter() {
+		final MethodNode m = createMethod();
+
+		assertIgnored(new Range(m.instructions.get(3), m.instructions.get(3)));
+	}
+
+	@Test
+	public void should_not_filter_when_suffix_absent() {
+		final MethodNode m = createMethod();
+		m.name = "synthetic_without_suffix";
+
+		assertIgnored();
+	}
+
+	@Test
+	public void should_not_filter_when_not_synthetic() {
+		final MethodNode m = createMethod();
+		m.access = 0;
+		m.name = "not_synthetic$default";
+
+		assertIgnored();
+	}
+
+}