Added test cases for Kotlin support for CPD.

pmd-kotlin/src/test/java/net/sourceforge/pmd/LanguageVersionTest.java

@@ -0,0 +1,27 @@
+/**
+ * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
+ */
+
+package net.sourceforge.pmd;
+
+import java.util.Arrays;
+import java.util.Collection;
+
+import org.junit.runners.Parameterized.Parameters;
+
+import net.sourceforge.pmd.lang.LanguageRegistry;
+import net.sourceforge.pmd.lang.LanguageVersion;
+import net.sourceforge.pmd.lang.kotlin.KotlinLanguageModule;
+
+public class LanguageVersionTest extends AbstractLanguageVersionTest {
+
+    public LanguageVersionTest(String name, String terseName, String version, LanguageVersion expected) {
+        super(name, terseName, version, expected);
+    }
+
+    @Parameters
+    public static Collection<Object[]> data() {
+        return Arrays.asList(new Object[][] { { KotlinLanguageModule.NAME, KotlinLanguageModule.TERSE_NAME, "1.3",
+            LanguageRegistry.getLanguage(KotlinLanguageModule.NAME).getDefaultVersion(), }, });
+    }
+}

pmd-kotlin/src/test/java/net/sourceforge/pmd/cpd/KotlinTokenizerTest.java

@@ -0,0 +1,56 @@
+/**
+ * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
+ */
+
+package net.sourceforge.pmd.cpd;
+
+import java.io.IOException;
+import java.util.Arrays;
+import java.util.Collection;
+
+import org.apache.commons.io.IOUtils;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.Parameterized;
+
+import net.sourceforge.pmd.testframework.AbstractTokenizerTest;
+
+@RunWith(Parameterized.class)
+public class KotlinTokenizerTest extends AbstractTokenizerTest {
+
+    private final String filename;
+    private final int nExpectedTokens;
+
+    public KotlinTokenizerTest(String filename, int nExpectedTokens) {
+        this.filename = filename;
+        this.nExpectedTokens = nExpectedTokens;
+    }
+
+    @Parameterized.Parameters
+    public static Collection<Object[]> data() {
+        return Arrays.asList(
+                new Object[] { "comment.kt", 5 },
+                new Object[] { "increment.kt", 185 },
+                new Object[] { "imports.kt", 1 }
+        );
+    }
+
+    @Before
+    @Override
+    public void buildTokenizer() throws IOException {
+        this.tokenizer = new KotlinTokenizer();
+        this.sourceCode = new SourceCode(new SourceCode.StringCodeLoader(this.getSampleCode(), this.filename));
+    }
+
+    @Override
+    public String getSampleCode() throws IOException {
+        return IOUtils.toString(KotlinTokenizer.class.getResourceAsStream(this.filename));
+    }
+
+    @Test
+    public void tokenizeTest() throws IOException {
+        this.expectedTokenCount = nExpectedTokens;
+        super.tokenizeTest();
+    }
+}

pmd-kotlin/src/test/resources/net/sourceforge/pmd/cpd/comment.kt

@@ -0,0 +1,27 @@
+package com.github.shyiko.ktlint.internal
+
+var x = 0
+
+/*
+fun increment1() { x += 1 }
+fun increment2() { x += 1 }
+fun increment3() { x += 1 }
+fun increment4() { x += 1 }
+fun increment5() { x += 1 }
+fun increment6() { x += 1 }
+fun increment7() { x += 1 }
+fun increment8() { x += 1 }
+fun increment9() { x += 1 }
+fun increment10() { x += 1 }
+fun increment11() { x += 1 }
+fun increment12() { x += 1 }
+fun increment13() { x += 1 }
+fun increment14() { x += 1 }
+fun increment15() { x += 1 }
+fun increment16() { x += 1 }
+fun increment17() { x += 1 }
+fun increment18() { x += 1 }
+fun increment19() { x += 1 }
+fun increment20() { x += 1 }
+*/
+

pmd-kotlin/src/test/resources/net/sourceforge/pmd/cpd/imports.kt

@@ -0,0 +1,4 @@
+import java.math.BigInteger
+import java.math.BigInteger as BigInt
+import org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm
+import org.jetbrains.kotlin.resolve.jvm.diagnostics.ErrorsJvm.*

pmd-kotlin/src/test/resources/net/sourceforge/pmd/cpd/increment.kt

@@ -0,0 +1,25 @@
+package com.github.shyiko.ktlint.internal
+
+var x = 0
+
+fun increment1() { x += 1 }
+fun increment2() { x += 1 }
+fun increment3() { x += 1 }
+fun increment4() { x += 1 }
+fun increment5() { x += 1 }
+fun increment6() { x += 1 }
+fun increment7() { x += 1 }
+fun increment8() { x += 1 }
+fun increment9() { x += 1 }
+fun increment10() { x += 1 }
+fun increment11() { x += 1 }
+fun increment12() { x += 1 }
+fun increment13() { x += 1 }
+fun increment14() { x += 1 }
+fun increment15() { x += 1 }
+fun increment16() { x += 1 }
+fun increment17() { x += 1 }
+fun increment18() { x += 1 }
+fun increment19() { x += 1 }
+fun increment20() { x += 1 }
+