Introduces java 8 integration test module

* Only for testing pmd-java
* Activated only if the jdk is 1.8

pmd-java8/src/test/java/net/sourceforge/pmd/lang/java/bugs/InterfaceMethodTest.java

@@ -0,0 +1,39 @@
+package net.sourceforge.pmd.lang.java.bugs;
+
+//import java.util.stream.IntStream;
+//import static java.util.stream.Collectors.toList;
+
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import org.junit.Ignore;
+import org.junit.Test;
+import net.sourceforge.pmd.lang.LanguageRegistry;
+import net.sourceforge.pmd.lang.LanguageVersionHandler;
+import net.sourceforge.pmd.lang.java.JavaLanguageModule;
+import net.sourceforge.pmd.lang.java.ast.ASTCompilationUnit;
+import net.sourceforge.pmd.typeresolution.testdata.UsesJavaStreams;
+
+@Ignore
+public class InterfaceMethodTest {
+
+    @Test
+    public void should_not_fail() {
+        ASTCompilationUnit acu = parseAndTypeResolveForClass(UsesJavaStreams.class);
+    }
+
+    // Note: If you're using Eclipse or some other IDE to run this test, you _must_ have the regress folder in
+    // the classpath.  Normally the IDE doesn't put source directories themselves directly in the classpath, only
+    // the output directories are in the classpath.
+    private ASTCompilationUnit parseAndTypeResolveForClass(Class<?> clazz) {
+        String sourceFile = clazz.getName().replace('.', '/') + ".java";
+        InputStream is = InterfaceMethodTest.class.getClassLoader().getResourceAsStream(sourceFile);
+        if (is == null) {
+            throw new IllegalArgumentException("Unable to find source file " + sourceFile + " for " + clazz);
+        }
+        LanguageVersionHandler languageVersionHandler = LanguageRegistry.getLanguage(JavaLanguageModule.NAME).getVersion("1.8").getLanguageVersionHandler();
+        ASTCompilationUnit acu = (ASTCompilationUnit)languageVersionHandler.getParser(languageVersionHandler.getDefaultParserOptions()).parse(null, new InputStreamReader(is));
+        languageVersionHandler.getSymbolFacade().start(acu);
+        languageVersionHandler.getTypeResolutionFacade(InterfaceMethodTest.class.getClassLoader()).start(acu);
+        return acu;
+    }
+}

pmd-java8/src/test/java/net/sourceforge/pmd/lang/java/bugs/Java8MultipleLambdasTest.java

@@ -0,0 +1,48 @@
+package net.sourceforge.pmd.lang.java.bugs;
+
+import java.io.StringReader;
+import org.junit.Ignore;
+import org.junit.Test;
+import net.sourceforge.pmd.PMD;
+import net.sourceforge.pmd.lang.LanguageRegistry;
+import net.sourceforge.pmd.lang.LanguageVersionHandler;
+import net.sourceforge.pmd.lang.java.JavaLanguageModule;
+import net.sourceforge.pmd.lang.java.ast.ASTCompilationUnit;
+import net.sourceforge.pmd.lang.java.symboltable.SymbolFacade;
+
+@Ignore
+public class Java8MultipleLambdasTest {
+
+    private static final String MULTIPLE_JAVA_8_LAMBDAS =
+            "public class MultipleLambdas {" + PMD.EOL +
+            "  Observer a = (o, arg) -> System.out.println(\"a_\" + arg);" + PMD.EOL +
+            "  Observer b = (o, arg) -> System.out.println(\"b_\" + arg);" + PMD.EOL +
+            "}";
+
+    @Test
+    public void should_not_fail() {
+        parseCode(MULTIPLE_JAVA_8_LAMBDAS);
+    }
+
+    private void parseCode(String code) {
+        LanguageVersionHandler languageVersionHandler = LanguageRegistry.getLanguage(JavaLanguageModule.NAME).getDefaultVersion().getLanguageVersionHandler();
+        ASTCompilationUnit acu = (ASTCompilationUnit) languageVersionHandler.getParser(languageVersionHandler.getDefaultParserOptions()).parse(null, new StringReader(code));
+        SymbolFacade stb = new SymbolFacade();
+        stb.initializeWith(acu);
+    }
+
+
+    // Was failing with :
+    // java.lang.RuntimeException: Variable: image = 'i', line = 3 is already in the symbol table
+    //    at net.AbstractJavaScope.checkForDuplicatedNameDeclaration(AbstractJavaScope.java:27)
+    //    at net.sourceforge.pmd.lang.java.symboltable.AbstractJavaScope.addDeclaration(AbstractJavaScope.java:21)
+    //    at net.sourceforge.pmd.lang.java.symboltable.ScopeAndDeclarationFinder.visit(ScopeAndDeclarationFinder.java:294)
+    //    at net.sourceforge.pmd.lang.java.ast.ASTVariableDeclaratorId.jjtAccept(ASTVariableDeclaratorId.java:30)
+    //    at net.AbstractJavaNode.childrenAccept(AbstractJavaNode.java:55)
+    //    at net.sourceforge.pmd.lang.java.ast.JavaParserVisitorAdapter.visit(JavaParserVisitorAdapter.java:9)
+    //    at net.sourceforge.pmd.lang.java.ast.JavaParserVisitorAdapter.visit(JavaParserVisitorAdapter.java:455)
+    //    at net.sourceforge.pmd.lang.java.ast.ASTLambdaExpression.jjtAccept(ASTLambdaExpression.java:21)
+    //    at net.sourceforge.pmd.lang.java.ast.AbstractJavaNode.childrenAccept(AbstractJavaNode.java:55)
+    //    at net.sourceforge.pmd.lang.java.ast.JavaParserVisitorAdapter.visit(JavaParserVisitorAdapter.java:9)
+    //    at net.sourceforge.pmd.lang.java.ast.JavaParserVisitorAdapter.visit(JavaParserVisitorAdapter.java:312)
+}

pmd-java8/src/test/java/net/sourceforge/pmd/typeresolution/ClassTypeResolverJava8Test.java

@@ -0,0 +1,53 @@
+/**
+ * BSD-style license; for more info see http://pmd.sourceforge.net/license.html
+ */
+package net.sourceforge.pmd.typeresolution;
+
+import java.io.InputStream;
+import java.io.InputStreamReader;
+import org.junit.Test;
+import net.sourceforge.pmd.lang.LanguageRegistry;
+import net.sourceforge.pmd.lang.LanguageVersionHandler;
+import net.sourceforge.pmd.lang.java.JavaLanguageModule;
+import net.sourceforge.pmd.lang.java.ast.ASTCompilationUnit;
+import net.sourceforge.pmd.typeresolution.testdata.UsesJavaStreams;
+import net.sourceforge.pmd.typeresolution.testdata.UsesRepeatableAnnotations;
+
+
+public class ClassTypeResolverJava8Test {
+
+    @Test
+    public void interface_method_should_be_parseable() {
+        ASTCompilationUnit acu = parseAndTypeResolveForClass18(UsesJavaStreams.class);
+    }
+
+    @Test
+    public void repeatable_annotations_method_should_be_parseable() {
+        ASTCompilationUnit acu = parseAndTypeResolveForClass18(UsesRepeatableAnnotations.class);
+    }
+
+
+    public static junit.framework.Test suite() {
+        return new junit.framework.JUnit4TestAdapter(ClassTypeResolverJava8Test.class);
+    }
+
+    private ASTCompilationUnit parseAndTypeResolveForClass18(Class<?> clazz) {
+        return parseAndTypeResolveForClass(clazz, "1.8");
+    }
+
+    // Note: If you're using Eclipse or some other IDE to run this test, you _must_ have the regress folder in
+    // the classpath.  Normally the IDE doesn't put source directories themselves directly in the classpath, only
+    // the output directories are in the classpath.
+    private ASTCompilationUnit parseAndTypeResolveForClass(Class<?> clazz, String version) {
+        String sourceFile = clazz.getName().replace('.', '/') + ".java";
+        InputStream is = ClassTypeResolverJava8Test.class.getClassLoader().getResourceAsStream(sourceFile);
+        if (is == null) {
+            throw new IllegalArgumentException("Unable to find source file " + sourceFile + " for " + clazz);
+        }
+        LanguageVersionHandler languageVersionHandler = LanguageRegistry.getLanguage(JavaLanguageModule.NAME).getVersion(version).getLanguageVersionHandler();
+        ASTCompilationUnit acu = (ASTCompilationUnit) languageVersionHandler.getParser(languageVersionHandler.getDefaultParserOptions()).parse(null, new InputStreamReader(is));
+        languageVersionHandler.getSymbolFacade().start(acu);
+        languageVersionHandler.getTypeResolutionFacade(ClassTypeResolverJava8Test.class.getClassLoader()).start(acu);
+        return acu;
+    }
+}

pmd-java8/src/test/java/net/sourceforge/pmd/typeresolution/testdata/UsesJavaStreams.java

@@ -0,0 +1,15 @@
+package net.sourceforge.pmd.typeresolution.testdata;
+
+public class UsesJavaStreams {
+    interface WithStaticAndDefaultMethod {
+        static void performOn() { }
+        default void myToString() {}
+    }
+
+    class ImplWithStaticAndDefaultMethod implements WithStaticAndDefaultMethod {}
+
+    public void performStuff() {
+        WithStaticAndDefaultMethod.performOn();
+        new ImplWithStaticAndDefaultMethod().myToString();
+    }
+}

pmd-java8/src/test/java/net/sourceforge/pmd/typeresolution/testdata/UsesRepeatableAnnotations.java

@@ -0,0 +1,21 @@
+package net.sourceforge.pmd.typeresolution.testdata;
+
+import java.lang.annotation.Repeatable;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import net.sourceforge.pmd.typeresolution.testdata.UsesRepeatableAnnotations.Multitude;
+
+@Multitude("1")
+@Multitude("2")
+@Multitude("3")
+@Multitude("4")
+public class UsesRepeatableAnnotations {
+
+    @Repeatable(Multitudes.class)
+    @Retention(RetentionPolicy.RUNTIME)
+    @interface Multitude { String value(); }
+
+    @Retention(RetentionPolicy.RUNTIME)
+    @interface Multitudes { Multitude[] value(); }
+
+}