Added test cases for Dart support for CPD.

pmd-dart/src/test/java/net/sourceforge/pmd/cpd/DartTokenizerTest.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 DartTokenizerTest extends AbstractTokenizerTest {
+
+    private final String filename;
+    private final int nExpectedTokens;
+
+    public DartTokenizerTest(String filename, int nExpectedTokens) {
+        this.filename = filename;
+        this.nExpectedTokens = nExpectedTokens;
+    }
+
+    @Parameterized.Parameters
+    public static Collection<Object[]> data() {
+        return Arrays.asList(
+                new Object[] { "comment.dart" , 5 },
+                new Object[] { "increment.dart" , 185 },
+                new Object[] { "imports.dart" , 1 }
+        );
+    }
+
+    @Before
+    @Override
+    public void buildTokenizer() throws IOException {
+        this.tokenizer = new DartTokenizer();
+        this.sourceCode = new SourceCode(new SourceCode.StringCodeLoader(this.getSampleCode(), this.filename));
+    }
+
+    @Override
+    public String getSampleCode() throws IOException {
+        return IOUtils.toString(DartTokenizer.class.getResourceAsStream(this.filename));
+    }
+
+    @Test
+    public void tokenizeTest() throws IOException {
+        this.expectedTokenCount = nExpectedTokens;
+        super.tokenizeTest();
+    }
+}

pmd-dart/src/test/resources/net/sourceforge/pmd/cpd/comment.dart

@@ -0,0 +1,26 @@
+library mylibrary;
+
+var x = 0;
+
+/*
+void increment1() { x += 1; }
+void increment2() { x += 1; }
+void increment3() { x += 1; }
+void increment4() { x += 1; }
+void increment5() { x += 1; }
+void increment6() { x += 1; }
+void increment7() { x += 1; }
+void increment8() { x += 1; }
+void increment9() { x += 1; }
+void increment10() { x += 1; }
+void increment11() { x += 1; }
+void increment12() { x += 1; }
+void increment13() { x += 1; }
+void increment14() { x += 1; }
+void increment15() { x += 1; }
+void increment16() { x += 1; }
+void increment17() { x += 1; }
+void increment18() { x += 1; }
+void increment19() { x += 1; }
+void increment20() { x += 1; }
+*/

pmd-dart/src/test/resources/net/sourceforge/pmd/cpd/imports.dart

@@ -0,0 +1,15 @@
+import 'package:flutter/material.dart';
+import 'package:english_words/english_words.dart' as EnglishWords;
+import 'dart:io' deferred as io;
+import 'dart:async' show AsyncError hide Completer;
+import 'dart:async' hide Completer show AsyncError;
+import 'dart:async' show AsyncError;
+import 'dart:async' hide Completer;
+import 'dart:async' show AsyncError, Completer hide ControllerCallback, ControllerCancelCallback;
+import 'dart:async' show AsyncError, Completer;
+import 'dart:async' hide ControllerCallback, ControllerCancelCallback;
+import "package:boolean_selector/boolean_selector.dart";
+import '''package:charcode/ascii.dart''' as ascii;
+import """package:collection/algorithms.dart""" as algo;
+import 'dart:collection' show HashMap;
+import 'dart:math' hide ln10 show ln2, cos, sin;

pmd-dart/src/test/resources/net/sourceforge/pmd/cpd/increment.dart

@@ -0,0 +1,24 @@
+library mylibrary;
+
+var x = 0;
+
+void increment1() { x += 1; }
+void increment2() { x += 1; }
+void increment3() { x += 1; }
+void increment4() { x += 1; }
+void increment5() { x += 1; }
+void increment6() { x += 1; }
+void increment7() { x += 1; }
+void increment8() { x += 1; }
+void increment9() { x += 1; }
+void increment10() { x += 1; }
+void increment11() { x += 1; }
+void increment12() { x += 1; }
+void increment13() { x += 1; }
+void increment14() { x += 1; }
+void increment15() { x += 1; }
+void increment16() { x += 1; }
+void increment17() { x += 1; }
+void increment18() { x += 1; }
+void increment19() { x += 1; }
+void increment20() { x += 1; }