javaparser-testing/src/test/java/com/github/javaparser/JavaParserTest.java - platform/external/javaparser - Git at Google

 /*
  * Copyright (C) 2007-2010 Júlio Vilmar Gesser.
  * Copyright (C) 2011, 2013-2016 The JavaParser Team.
  *
  * This file is part of JavaParser.
  *
  * JavaParser can be used either under the terms of
  * a) the GNU Lesser General Public License as published by
  *     the Free Software Foundation, either version 3 of the License, or
  *     (at your option) any later version.
  * b) the terms of the Apache License
  *
  * You should have received a copy of both licenses in LICENCE.LGPL and
  * LICENCE.APACHE. Please refer to those files for details.
  *
  * JavaParser is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU Lesser General Public License for more details.
  */

 package com.github.javaparser;

 import com.github.javaparser.ast.CompilationUnit;
 import com.github.javaparser.ast.body.AnnotationMemberDeclaration;
 import com.github.javaparser.ast.body.MethodDeclaration;
 import com.github.javaparser.ast.expr.ArrayCreationExpr;
 import com.github.javaparser.ast.expr.CastExpr;
 import com.github.javaparser.ast.expr.Expression;
 import com.github.javaparser.ast.expr.LambdaExpr;
 import com.github.javaparser.ast.stmt.*;
 import com.github.javaparser.ast.type.ClassOrInterfaceType;
 import com.github.javaparser.ast.type.IntersectionType;
 import com.github.javaparser.ast.type.Type;
 import org.junit.Test;

 import java.io.IOException;
 import java.nio.file.Path;
 import java.util.Optional;

 import static com.github.javaparser.ParseStart.COMPILATION_UNIT;
 import static com.github.javaparser.Providers.provider;
 import static com.github.javaparser.Range.range;
 import static com.github.javaparser.utils.CodeGenerationUtils.mavenModuleRoot;
 import static com.github.javaparser.utils.TestUtils.assertInstanceOf;
 import static com.github.javaparser.utils.Utils.EOL;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;

 public class JavaParserTest {

     @Test
     public void rangeOfAnnotationMemberDeclarationIsCorrect() {
         String code = "@interface AD { String foo(); }";
         CompilationUnit cu = JavaParser.parse(code);
         AnnotationMemberDeclaration memberDeclaration = cu.getAnnotationDeclarationByName("AD").get().getMember(0).asAnnotationMemberDeclaration();
         assertEquals(true, memberDeclaration.getRange().isPresent());
         assertEquals(new Range(new Position(1, 17), new Position(1, 29)), memberDeclaration.getRange().get());
     }

     @Test
     public void rangeOfAnnotationMemberDeclarationWithArrayTypeIsCorrect() {
         String code = "@interface AD { String[] foo(); }";
         CompilationUnit cu = JavaParser.parse(code);
         AnnotationMemberDeclaration memberDeclaration = cu.getAnnotationDeclarationByName("AD").get().getMember(0).asAnnotationMemberDeclaration();
         assertEquals(true, memberDeclaration.getRange().isPresent());
         assertEquals(new Range(new Position(1, 17), new Position(1, 31)), memberDeclaration.getRange().get());
     }

     @Test
     public void rangeOfArrayCreationLevelWithExpressionIsCorrect() {
         String code = "new int[123][456]";
         ArrayCreationExpr expression = JavaParser.parseExpression(code);
         Optional<Range> range;

         range = expression.getLevels().get(0).getRange();
         assertEquals(true, range.isPresent());
         assertEquals(new Range(new Position(1, 8), new Position(1, 12)), range.get());

         range = expression.getLevels().get(1).getRange();
         assertEquals(true, range.isPresent());
         assertEquals(new Range(new Position(1, 13), new Position(1, 17)), range.get());
     }

     @Test
     public void rangeOfArrayCreationLevelWithoutExpressionIsCorrect() {
         String code = "new int[][]";
         ArrayCreationExpr expression = JavaParser.parseExpression(code);
         Optional<Range> range;

         range = expression.getLevels().get(0).getRange();
         assertEquals(true, range.isPresent());
         assertEquals(new Range(new Position(1, 8), new Position(1, 9)), range.get());

         range = expression.getLevels().get(1).getRange();
         assertEquals(true, range.isPresent());
         assertEquals(new Range(new Position(1, 10), new Position(1, 11)), range.get());
     }

     @Test
     public void parseErrorContainsLocation() {
         ParseResult<CompilationUnit> result = new JavaParser().parse(COMPILATION_UNIT, provider("class X { // blah"));

         Problem problem = result.getProblem(0);
         assertEquals(range(1, 9, 1, 17), problem.getLocation().get().toRange().get());
         assertEquals("Parse error. Found <EOF>, expected one of  \";\" \"<\" \"@\" \"abstract\" \"boolean\" \"byte\" \"char\" \"class\" \"default\" \"double\" \"enum\" \"exports\" \"final\" \"float\" \"int\" \"interface\" \"long\" \"module\" \"native\" \"open\" \"opens\" \"private\" \"protected\" \"provides\" \"public\" \"requires\" \"short\" \"static\" \"strictfp\" \"synchronized\" \"to\" \"transient\" \"transitive\" \"uses\" \"void\" \"volatile\" \"with\" \"{\" \"}\" <IDENTIFIER>", problem.getMessage());
         assertInstanceOf(ParseException.class, problem.getCause().get());
     }

     @Test
     public void parseIntersectionType() {
         String code = "(Runnable & Serializable) (() -> {})";
         Expression expression = JavaParser.parseExpression(code);
         Type type = expression.asCastExpr().getType();

         assertTrue(type instanceof IntersectionType);
         IntersectionType intersectionType = type.asIntersectionType();
         assertEquals(2, intersectionType.getElements().size());
         assertTrue(intersectionType.getElements().get(0) instanceof ClassOrInterfaceType);
         assertEquals("Runnable", intersectionType.getElements().get(0).asClassOrInterfaceType().getNameAsString());
         assertTrue(intersectionType.getElements().get(1) instanceof ClassOrInterfaceType);
         assertEquals("Serializable", intersectionType.getElements().get(1).asClassOrInterfaceType().getNameAsString());
     }

     @Test
     public void rangeOfIntersectionType() {
         String code = "class A {" + EOL
                 + "  Object f() {" + EOL
                 + "    return (Comparator<Map.Entry<K, V>> & Serializable)(c1, c2) -> c1.getKey().compareTo(c2.getKey()); " + EOL
                 + "}}";
         CompilationUnit cu = JavaParser.parse(code);
         MethodDeclaration methodDeclaration = cu.getClassByName("A").get().getMember(0).asMethodDeclaration();
         ReturnStmt returnStmt = methodDeclaration.getBody().get().getStatement(0).asReturnStmt();
         CastExpr castExpr = returnStmt.getExpression().get().asCastExpr();
         Type type = castExpr.getType();
         assertEquals(range(3, 13, 3, 54), type.getRange().get());
     }

     @Test
     public void rangeOfCast() {
         String code = "class A {" + EOL
                 + "  Object f() {" + EOL
                 + "    return (Comparator<Map.Entry<K, V>> & Serializable)(c1, c2) -> c1.getKey().compareTo(c2.getKey()); " + EOL
                 + "}}";
         CompilationUnit cu = JavaParser.parse(code);
         MethodDeclaration methodDeclaration = cu.getClassByName("A").get().getMember(0).asMethodDeclaration();
         ReturnStmt returnStmt = methodDeclaration.getBody().get().getStatement(0).asReturnStmt();
         CastExpr castExpr = returnStmt.getExpression().get().asCastExpr();
         assertEquals(range(3, 12, 3, 101), castExpr.getRange().get());
     }

     @Test
     public void rangeOfCastNonIntersection() {
         String code = "class A {" + EOL
                 + "  Object f() {" + EOL
                 + "    return (Comparator<Map.Entry<K, V>>               )(c1, c2) -> c1.getKey().compareTo(c2.getKey()); " + EOL
                 + "}}";
         CompilationUnit cu = JavaParser.parse(code);
         MethodDeclaration methodDeclaration = cu.getClassByName("A").get().getMember(0).asMethodDeclaration();
         ReturnStmt returnStmt = methodDeclaration.getBody().get().getStatement(0).asReturnStmt();
         CastExpr castExpr = returnStmt.getExpression().get().asCastExpr();
         assertEquals(range(3, 12, 3, 101), castExpr.getRange().get());
     }

     @Test
     public void rangeOfLambda() {
         String code = "class A {" + EOL
                 + "  Object f() {" + EOL
                 + "    return (Comparator<Map.Entry<K, V>> & Serializable)(c1, c2) -> c1.getKey().compareTo(c2.getKey()); " + EOL
                 + "}}";
         CompilationUnit cu = JavaParser.parse(code);
         MethodDeclaration methodDeclaration = cu.getClassByName("A").get().getMember(0).asMethodDeclaration();
         ReturnStmt returnStmt = methodDeclaration.getBody().get().getStatement(0).asReturnStmt();
         CastExpr castExpr = returnStmt.getExpression().get().asCastExpr();
         LambdaExpr lambdaExpr = castExpr.getExpression().asLambdaExpr();
         assertEquals(range(3, 56, 3, 101), lambdaExpr.getRange().get());
         assertEquals(GeneratedJavaParserConstants.LPAREN, lambdaExpr.getTokenRange().get().getBegin().getKind());
         assertEquals(GeneratedJavaParserConstants.RPAREN, lambdaExpr.getTokenRange().get().getEnd().getKind());
     }

     @Test
     public void rangeOfLambdaBody() {
         String code = "class A {" + EOL
                 + "  Object f() {" + EOL
                 + "    return (Comparator<Map.Entry<K, V>> & Serializable)(c1, c2) -> c1.getKey().compareTo(c2.getKey()); " + EOL
                 + "}}";
         CompilationUnit cu = JavaParser.parse(code);
         MethodDeclaration methodDeclaration = cu.getClassByName("A").get().getMember(0).asMethodDeclaration();
         ReturnStmt returnStmt = methodDeclaration.getBody().get().getStatement(0).asReturnStmt();
         CastExpr castExpr = returnStmt.getExpression().get().asCastExpr();
         LambdaExpr lambdaExpr = castExpr.getExpression().asLambdaExpr();
         Statement lambdaBody = lambdaExpr.getBody();
         assertEquals(range(3, 68, 3, 101), lambdaBody.getRange().get());
     }

     @Test
     public void testNotStoringTokens() {
         JavaParser javaParser = new JavaParser(new ParserConfiguration().setStoreTokens(false));
         ParseResult<CompilationUnit> result = javaParser.parse(ParseStart.COMPILATION_UNIT, provider("class X{}"));
         assertEquals(false, result.getTokens().isPresent());
     }

     @Test(expected = ParseProblemException.class)
     public void trailingCodeIsAnError() {
         JavaParser.parseBlock("{} efijqoifjqefj");
     }

     @Test
     public void trailingWhitespaceIsIgnored() {
         BlockStmt blockStmt = JavaParser.parseBlock("{} // hello");
         assertEquals("{}", blockStmt.getTokenRange().get().toString());
     }

     @Test
     public void everyTokenHasACategory() throws IOException {
         final int tokenCount = GeneratedJavaParserConstants.tokenImage.length;
         Path tokenTypesPath = mavenModuleRoot(JavaParserTest.class).resolve("../javaparser-core/src/main/java/com/github/javaparser/TokenTypes.java");
         CompilationUnit tokenTypesCu = JavaParser.parse(tokenTypesPath);
         // -1 to take off the default: case.
         int switchEntries = tokenTypesCu.findAll(SwitchEntryStmt.class).size()-1;
         // The amount of "case XXX:" in TokenTypes.java should be equal to the amount of tokens JavaCC knows about:
         assertEquals(tokenCount, switchEntries);
     }

     @Test
     public void parsingInitializedAndUnitializedVarsInForStmt() {
         ForStmt forStmt = JavaParser.parseStatement("for(int a,b=0;;){}").asForStmt();
         assertEquals(1, forStmt.getInitialization().size());
         assertEquals(true, forStmt.getInitialization().get(0).isVariableDeclarationExpr());
         assertEquals(2, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().size());
         assertEquals("a", forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(0).getNameAsString());
         assertEquals("b", forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(1).getNameAsString());
         assertEquals(false, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(0).getInitializer().isPresent());
         assertEquals(true, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(1).getInitializer().isPresent());
     }

     @Test
     public void parsingInitializedAndUnitializedVarsInForStmtComplexCase() {
         // See issue 1281
         ForStmt forStmt = JavaParser.parseStatement("for(int i, j = array2.length - 1;;){}").asForStmt();
         assertEquals(1, forStmt.getInitialization().size());
         assertEquals(true, forStmt.getInitialization().get(0).isVariableDeclarationExpr());
         assertEquals(2, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().size());
         assertEquals("i", forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(0).getNameAsString());
         assertEquals("j", forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(1).getNameAsString());
         assertEquals(false, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(0).getInitializer().isPresent());
         assertEquals(true, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(1).getInitializer().isPresent());
     }
 }
	/*
	* Copyright (C) 2007-2010 Júlio Vilmar Gesser.
	* Copyright (C) 2011, 2013-2016 The JavaParser Team.
	*
	* This file is part of JavaParser.
	*
	* JavaParser can be used either under the terms of
	* a) the GNU Lesser General Public License as published by
	* the Free Software Foundation, either version 3 of the License, or
	* (at your option) any later version.
	* b) the terms of the Apache License
	*
	* You should have received a copy of both licenses in LICENCE.LGPL and
	* LICENCE.APACHE. Please refer to those files for details.
	*
	* JavaParser is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU Lesser General Public License for more details.
	*/

	package com.github.javaparser;

	import com.github.javaparser.ast.CompilationUnit;
	import com.github.javaparser.ast.body.AnnotationMemberDeclaration;
	import com.github.javaparser.ast.body.MethodDeclaration;
	import com.github.javaparser.ast.expr.ArrayCreationExpr;
	import com.github.javaparser.ast.expr.CastExpr;
	import com.github.javaparser.ast.expr.Expression;
	import com.github.javaparser.ast.expr.LambdaExpr;
	import com.github.javaparser.ast.stmt.*;
	import com.github.javaparser.ast.type.ClassOrInterfaceType;
	import com.github.javaparser.ast.type.IntersectionType;
	import com.github.javaparser.ast.type.Type;
	import org.junit.Test;

	import java.io.IOException;
	import java.nio.file.Path;
	import java.util.Optional;

	import static com.github.javaparser.ParseStart.COMPILATION_UNIT;
	import static com.github.javaparser.Providers.provider;
	import static com.github.javaparser.Range.range;
	import static com.github.javaparser.utils.CodeGenerationUtils.mavenModuleRoot;
	import static com.github.javaparser.utils.TestUtils.assertInstanceOf;
	import static com.github.javaparser.utils.Utils.EOL;
	import static org.junit.Assert.assertEquals;
	import static org.junit.Assert.assertTrue;

	public class JavaParserTest {

	@Test
	public void rangeOfAnnotationMemberDeclarationIsCorrect() {
	String code = "@interface AD { String foo(); }";
	CompilationUnit cu = JavaParser.parse(code);
	AnnotationMemberDeclaration memberDeclaration = cu.getAnnotationDeclarationByName("AD").get().getMember(0).asAnnotationMemberDeclaration();
	assertEquals(true, memberDeclaration.getRange().isPresent());
	assertEquals(new Range(new Position(1, 17), new Position(1, 29)), memberDeclaration.getRange().get());
	}

	@Test
	public void rangeOfAnnotationMemberDeclarationWithArrayTypeIsCorrect() {
	String code = "@interface AD { String[] foo(); }";
	CompilationUnit cu = JavaParser.parse(code);
	AnnotationMemberDeclaration memberDeclaration = cu.getAnnotationDeclarationByName("AD").get().getMember(0).asAnnotationMemberDeclaration();
	assertEquals(true, memberDeclaration.getRange().isPresent());
	assertEquals(new Range(new Position(1, 17), new Position(1, 31)), memberDeclaration.getRange().get());
	}

	@Test
	public void rangeOfArrayCreationLevelWithExpressionIsCorrect() {
	String code = "new int[123][456]";
	ArrayCreationExpr expression = JavaParser.parseExpression(code);
	Optional<Range> range;

	range = expression.getLevels().get(0).getRange();
	assertEquals(true, range.isPresent());
	assertEquals(new Range(new Position(1, 8), new Position(1, 12)), range.get());

	range = expression.getLevels().get(1).getRange();
	assertEquals(true, range.isPresent());
	assertEquals(new Range(new Position(1, 13), new Position(1, 17)), range.get());
	}

	@Test
	public void rangeOfArrayCreationLevelWithoutExpressionIsCorrect() {
	String code = "new int[][]";
	ArrayCreationExpr expression = JavaParser.parseExpression(code);
	Optional<Range> range;

	range = expression.getLevels().get(0).getRange();
	assertEquals(true, range.isPresent());
	assertEquals(new Range(new Position(1, 8), new Position(1, 9)), range.get());

	range = expression.getLevels().get(1).getRange();
	assertEquals(true, range.isPresent());
	assertEquals(new Range(new Position(1, 10), new Position(1, 11)), range.get());
	}

	@Test
	public void parseErrorContainsLocation() {
	ParseResult<CompilationUnit> result = new JavaParser().parse(COMPILATION_UNIT, provider("class X { // blah"));

	Problem problem = result.getProblem(0);
	assertEquals(range(1, 9, 1, 17), problem.getLocation().get().toRange().get());
	assertEquals("Parse error. Found <EOF>, expected one of \";\" \"<\" \"@\" \"abstract\" \"boolean\" \"byte\" \"char\" \"class\" \"default\" \"double\" \"enum\" \"exports\" \"final\" \"float\" \"int\" \"interface\" \"long\" \"module\" \"native\" \"open\" \"opens\" \"private\" \"protected\" \"provides\" \"public\" \"requires\" \"short\" \"static\" \"strictfp\" \"synchronized\" \"to\" \"transient\" \"transitive\" \"uses\" \"void\" \"volatile\" \"with\" \"{\" \"}\" <IDENTIFIER>", problem.getMessage());
	assertInstanceOf(ParseException.class, problem.getCause().get());
	}

	@Test
	public void parseIntersectionType() {
	String code = "(Runnable & Serializable) (() -> {})";
	Expression expression = JavaParser.parseExpression(code);
	Type type = expression.asCastExpr().getType();

	assertTrue(type instanceof IntersectionType);
	IntersectionType intersectionType = type.asIntersectionType();
	assertEquals(2, intersectionType.getElements().size());
	assertTrue(intersectionType.getElements().get(0) instanceof ClassOrInterfaceType);
	assertEquals("Runnable", intersectionType.getElements().get(0).asClassOrInterfaceType().getNameAsString());
	assertTrue(intersectionType.getElements().get(1) instanceof ClassOrInterfaceType);
	assertEquals("Serializable", intersectionType.getElements().get(1).asClassOrInterfaceType().getNameAsString());
	}

	@Test
	public void rangeOfIntersectionType() {
	String code = "class A {" + EOL
	+ " Object f() {" + EOL
	+ " return (Comparator<Map.Entry<K, V>> & Serializable)(c1, c2) -> c1.getKey().compareTo(c2.getKey()); " + EOL
	+ "}}";
	CompilationUnit cu = JavaParser.parse(code);
	MethodDeclaration methodDeclaration = cu.getClassByName("A").get().getMember(0).asMethodDeclaration();
	ReturnStmt returnStmt = methodDeclaration.getBody().get().getStatement(0).asReturnStmt();
	CastExpr castExpr = returnStmt.getExpression().get().asCastExpr();
	Type type = castExpr.getType();
	assertEquals(range(3, 13, 3, 54), type.getRange().get());
	}

	@Test
	public void rangeOfCast() {
	String code = "class A {" + EOL
	+ " Object f() {" + EOL
	+ " return (Comparator<Map.Entry<K, V>> & Serializable)(c1, c2) -> c1.getKey().compareTo(c2.getKey()); " + EOL
	+ "}}";
	CompilationUnit cu = JavaParser.parse(code);
	MethodDeclaration methodDeclaration = cu.getClassByName("A").get().getMember(0).asMethodDeclaration();
	ReturnStmt returnStmt = methodDeclaration.getBody().get().getStatement(0).asReturnStmt();
	CastExpr castExpr = returnStmt.getExpression().get().asCastExpr();
	assertEquals(range(3, 12, 3, 101), castExpr.getRange().get());
	}

	@Test
	public void rangeOfCastNonIntersection() {
	String code = "class A {" + EOL
	+ " Object f() {" + EOL
	+ " return (Comparator<Map.Entry<K, V>> )(c1, c2) -> c1.getKey().compareTo(c2.getKey()); " + EOL
	+ "}}";
	CompilationUnit cu = JavaParser.parse(code);
	MethodDeclaration methodDeclaration = cu.getClassByName("A").get().getMember(0).asMethodDeclaration();
	ReturnStmt returnStmt = methodDeclaration.getBody().get().getStatement(0).asReturnStmt();
	CastExpr castExpr = returnStmt.getExpression().get().asCastExpr();
	assertEquals(range(3, 12, 3, 101), castExpr.getRange().get());
	}

	@Test
	public void rangeOfLambda() {
	String code = "class A {" + EOL
	+ " Object f() {" + EOL
	+ " return (Comparator<Map.Entry<K, V>> & Serializable)(c1, c2) -> c1.getKey().compareTo(c2.getKey()); " + EOL
	+ "}}";
	CompilationUnit cu = JavaParser.parse(code);
	MethodDeclaration methodDeclaration = cu.getClassByName("A").get().getMember(0).asMethodDeclaration();
	ReturnStmt returnStmt = methodDeclaration.getBody().get().getStatement(0).asReturnStmt();
	CastExpr castExpr = returnStmt.getExpression().get().asCastExpr();
	LambdaExpr lambdaExpr = castExpr.getExpression().asLambdaExpr();
	assertEquals(range(3, 56, 3, 101), lambdaExpr.getRange().get());
	assertEquals(GeneratedJavaParserConstants.LPAREN, lambdaExpr.getTokenRange().get().getBegin().getKind());
	assertEquals(GeneratedJavaParserConstants.RPAREN, lambdaExpr.getTokenRange().get().getEnd().getKind());
	}

	@Test
	public void rangeOfLambdaBody() {
	String code = "class A {" + EOL
	+ " Object f() {" + EOL
	+ " return (Comparator<Map.Entry<K, V>> & Serializable)(c1, c2) -> c1.getKey().compareTo(c2.getKey()); " + EOL
	+ "}}";
	CompilationUnit cu = JavaParser.parse(code);
	MethodDeclaration methodDeclaration = cu.getClassByName("A").get().getMember(0).asMethodDeclaration();
	ReturnStmt returnStmt = methodDeclaration.getBody().get().getStatement(0).asReturnStmt();
	CastExpr castExpr = returnStmt.getExpression().get().asCastExpr();
	LambdaExpr lambdaExpr = castExpr.getExpression().asLambdaExpr();
	Statement lambdaBody = lambdaExpr.getBody();
	assertEquals(range(3, 68, 3, 101), lambdaBody.getRange().get());
	}

	@Test
	public void testNotStoringTokens() {
	JavaParser javaParser = new JavaParser(new ParserConfiguration().setStoreTokens(false));
	ParseResult<CompilationUnit> result = javaParser.parse(ParseStart.COMPILATION_UNIT, provider("class X{}"));
	assertEquals(false, result.getTokens().isPresent());
	}

	@Test(expected = ParseProblemException.class)
	public void trailingCodeIsAnError() {
	JavaParser.parseBlock("{} efijqoifjqefj");
	}

	@Test
	public void trailingWhitespaceIsIgnored() {
	BlockStmt blockStmt = JavaParser.parseBlock("{} // hello");
	assertEquals("{}", blockStmt.getTokenRange().get().toString());
	}

	@Test
	public void everyTokenHasACategory() throws IOException {
	final int tokenCount = GeneratedJavaParserConstants.tokenImage.length;
	Path tokenTypesPath = mavenModuleRoot(JavaParserTest.class).resolve("../javaparser-core/src/main/java/com/github/javaparser/TokenTypes.java");
	CompilationUnit tokenTypesCu = JavaParser.parse(tokenTypesPath);
	// -1 to take off the default: case.
	int switchEntries = tokenTypesCu.findAll(SwitchEntryStmt.class).size()-1;
	// The amount of "case XXX:" in TokenTypes.java should be equal to the amount of tokens JavaCC knows about:
	assertEquals(tokenCount, switchEntries);
	}

	@Test
	public void parsingInitializedAndUnitializedVarsInForStmt() {
	ForStmt forStmt = JavaParser.parseStatement("for(int a,b=0;;){}").asForStmt();
	assertEquals(1, forStmt.getInitialization().size());
	assertEquals(true, forStmt.getInitialization().get(0).isVariableDeclarationExpr());
	assertEquals(2, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().size());
	assertEquals("a", forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(0).getNameAsString());
	assertEquals("b", forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(1).getNameAsString());
	assertEquals(false, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(0).getInitializer().isPresent());
	assertEquals(true, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(1).getInitializer().isPresent());
	}

	@Test
	public void parsingInitializedAndUnitializedVarsInForStmtComplexCase() {
	// See issue 1281
	ForStmt forStmt = JavaParser.parseStatement("for(int i, j = array2.length - 1;;){}").asForStmt();
	assertEquals(1, forStmt.getInitialization().size());
	assertEquals(true, forStmt.getInitialization().get(0).isVariableDeclarationExpr());
	assertEquals(2, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().size());
	assertEquals("i", forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(0).getNameAsString());
	assertEquals("j", forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(1).getNameAsString());
	assertEquals(false, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(0).getInitializer().isPresent());
	assertEquals(true, forStmt.getInitialization().get(0).asVariableDeclarationExpr().getVariables().get(1).getInitializer().isPresent());
	}
	}