Add filter for Kotlin default methods (#1012)

1 files changed, 86 insertions, 0 deletions

diff --git a/org.jacoco.core.test/src/org/jacoco/core/internal/analysis/filter/KotlinDefaultMethodsFilterTest.java b/org.jacoco.core.test/src/org/jacoco/core/internal/analysis/filter/KotlinDefaultMethodsFilterTest.java
new file mode 100644
index 00000000..583b5c95
--- /dev/null
+++ b/org.jacoco.core.test/src/org/jacoco/core/internal/analysis/filter/KotlinDefaultMethodsFilterTest.java
@@ -0,0 +1,86 @@
+/*******************************************************************************
+ * Copyright (c) 2009, 2020 Mountainminds GmbH & Co. KG and Contributors
+ * This program and the accompanying materials are made available under
+ * the terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ * 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.Opcodes;
+import org.objectweb.asm.tree.MethodNode;
+
+/**
+ * Unit test for {@link KotlinDefaultMethodsFilter}.
+ */
+public class KotlinDefaultMethodsFilterTest extends FilterTestBase {
+
+	private final IFilter filter = new KotlinDefaultMethodsFilter();
+
+	@Test
+	public void should_filter() {
+		context.classAnnotations
+				.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
+		final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0,
+				"m", "()V", null, null);
+		m.visitVarInsn(Opcodes.ALOAD, 0);
+		m.visitMethodInsn(Opcodes.INVOKESTATIC, "Target$DefaultImpls", "m",
+				"(LTarget;)V", false);
+		m.visitInsn(Opcodes.RETURN);
+
+		filter.filter(m, context, output);
+
+		assertMethodIgnored(m);
+	}
+
+	@Test
+	public void should_not_filter_when_invokestatic_owner_does_not_match() {
+		context.classAnnotations
+				.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
+		final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0,
+				"m", "()V", null, null);
+		m.visitVarInsn(Opcodes.ALOAD, 0);
+		m.visitMethodInsn(Opcodes.INVOKESTATIC, "Target", "m", "(LTarget;)V",
+				false);
+		m.visitInsn(Opcodes.RETURN);
+
+		filter.filter(m, context, output);
+
+		assertIgnored();
+	}
+
+	@Test
+	public void should_not_filter_when_instructions_do_not_match() {
+		context.classAnnotations
+				.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
+		final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0,
+				"m", "()V", null, null);
+		m.visitInsn(Opcodes.RETURN);
+
+		filter.filter(m, context, output);
+
+		assertIgnored();
+	}
+
+	@Test
+	public void should_not_filter_when_not_kotlin() {
+		final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0,
+				"m", "()V", null, null);
+		m.visitVarInsn(Opcodes.ALOAD, 0);
+		m.visitMethodInsn(Opcodes.INVOKESTATIC, "Target$DefaultImpls", "m",
+				"(LTarget;)V", false);
+		m.visitInsn(Opcodes.RETURN);
+
+		filter.filter(m, context, output);
+
+		assertIgnored();
+	}
+
+}