Report code coverage correctly for Kotlin methods with default arguments (#774)

2 files changed, 62 insertions, 0 deletions

diff --git a/org.jacoco.core.test.validation.kotlin/src/org/jacoco/core/test/validation/kotlin/KotlinDefaultArgumentsTest.java b/org.jacoco.core.test.validation.kotlin/src/org/jacoco/core/test/validation/kotlin/KotlinDefaultArgumentsTest.java
new file mode 100644
index 00000000..4199cf7c
--- /dev/null
+++ b/org.jacoco.core.test.validation.kotlin/src/org/jacoco/core/test/validation/kotlin/KotlinDefaultArgumentsTest.java
@@ -0,0 +1,26 @@
+/*******************************************************************************
+ * 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.test.validation.kotlin;
+
+import org.jacoco.core.test.validation.ValidationTestBase;
+import org.jacoco.core.test.validation.kotlin.targets.KotlinDefaultArgumentsTarget;
+
+/**
+ * Test of functions with default arguments.
+ */
+public class KotlinDefaultArgumentsTest extends ValidationTestBase {
+
+	public KotlinDefaultArgumentsTest() {
+		super(KotlinDefaultArgumentsTarget.class);
+	}
+
+}
diff --git a/org.jacoco.core.test.validation.kotlin/src/org/jacoco/core/test/validation/kotlin/targets/KotlinDefaultArgumentsTarget.kt b/org.jacoco.core.test.validation.kotlin/src/org/jacoco/core/test/validation/kotlin/targets/KotlinDefaultArgumentsTarget.kt
new file mode 100644
index 00000000..6943f206
--- /dev/null
+++ b/org.jacoco.core.test.validation.kotlin/src/org/jacoco/core/test/validation/kotlin/targets/KotlinDefaultArgumentsTarget.kt
@@ -0,0 +1,36 @@
+/*******************************************************************************
+ * 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.test.validation.kotlin.targets
+
+/**
+ * Test target for functions with default arguments.
+ */
+object KotlinDefaultArgumentsTarget {
+
+    private fun f(a: String = "a", b: String = "b") { // assertFullyCovered(0, 0)
+    }
+
+    private fun branch(a: Boolean, b: String = if (a) "a" else "b") { // assertFullyCovered(0, 2)
+    }
+
+    @JvmStatic
+    fun main(args: Array<String>) {
+        f(a = "a")
+        f(b = "b")
+        /* next invocation doesn't use synthetic method: */
+        f("a", "b")
+
+        branch(false)
+        branch(true)
+    }
+
+}