javaparser-core-testing/src/test/java/com/github/javaparser/printer/DotPrinterTest.java

/*
 * 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.printer;

import com.github.javaparser.ast.CompilationUnit;
import com.github.javaparser.ast.expr.Expression;
import org.junit.jupiter.api.Test;

import static com.github.javaparser.StaticJavaParser.parse;
import static com.github.javaparser.StaticJavaParser.parseExpression;
import static com.github.javaparser.utils.TestUtils.assertEqualsNoEol;
import static org.junit.jupiter.api.Assertions.assertEquals;

class DotPrinterTest {
    @Test
    void testWithType() {
        String expectedOutput = "digraph {" + System.lineSeparator();
        expectedOutput += "n0 [label=\"root (MethodCallExpr)\"];" + System.lineSeparator();
        expectedOutput += "n1 [label=\"name (SimpleName)\"];" + System.lineSeparator();
        expectedOutput += "n0 -> n1;" + System.lineSeparator();
        expectedOutput += "n2 [label=\"identifier='x'\"];" + System.lineSeparator();
        expectedOutput += "n1 -> n2;" + System.lineSeparator();
        expectedOutput += "n3 [label=\"arguments\"];" + System.lineSeparator();
        expectedOutput += "n0 -> n3;" + System.lineSeparator();
        expectedOutput += "n4 [label=\"argument (IntegerLiteralExpr)\"];" + System.lineSeparator();
        expectedOutput += "n3 -> n4;" + System.lineSeparator();
        expectedOutput += "n5 [label=\"value='1'\"];" + System.lineSeparator();
        expectedOutput += "n4 -> n5;" + System.lineSeparator();
        expectedOutput += "n6 [label=\"argument (IntegerLiteralExpr)\"];" + System.lineSeparator();
        expectedOutput += "n3 -> n6;" + System.lineSeparator();
        expectedOutput += "n7 [label=\"value='1'\"];" + System.lineSeparator();
        expectedOutput += "n6 -> n7;" + System.lineSeparator();
        expectedOutput += "}";

        DotPrinter dotPrinter = new DotPrinter(true);
        Expression expression = parseExpression("x(1,1)");
        String output = dotPrinter.output(expression);
        assertEquals(expectedOutput, output);
    }

    @Test
    void testWithoutType() {
        String expectedOutput = "digraph {" + System.lineSeparator();
        expectedOutput += "n0 [label=\"root\"];" + System.lineSeparator();
        expectedOutput += "n1 [label=\"operator='PLUS'\"];" + System.lineSeparator();
        expectedOutput += "n0 -> n1;" + System.lineSeparator();
        expectedOutput += "n2 [label=\"left\"];" + System.lineSeparator();
        expectedOutput += "n0 -> n2;" + System.lineSeparator();
        expectedOutput += "n3 [label=\"value='1'\"];" + System.lineSeparator();
        expectedOutput += "n2 -> n3;" + System.lineSeparator();
        expectedOutput += "n4 [label=\"right\"];" + System.lineSeparator();
        expectedOutput += "n0 -> n4;" + System.lineSeparator();
        expectedOutput += "n5 [label=\"value='1'\"];" + System.lineSeparator();
        expectedOutput += "n4 -> n5;" + System.lineSeparator();
        expectedOutput += "}";

        DotPrinter dotPrinter = new DotPrinter(false);
        Expression expression = parseExpression("1+1");
        String output = dotPrinter.output(expression);
        assertEquals(expectedOutput, output);
    }

    @Test
    void testIssue1871() {
        DotPrinter printer = new DotPrinter(false);
        CompilationUnit cu = parse("//q\"q\nclass X{}");
        String output = printer.output(cu);
        assertEqualsNoEol("digraph {\n" +
                "n0 [label=\"root\"];\n" +
                "n1 [label=\"types\"];\n" +
                "n0 -> n1;\n" +
                "n2 [label=\"type\"];\n" +
                "n1 -> n2;\n" +
                "n3 [label=\"isInterface='false'\"];\n" +
                "n2 -> n3;\n" +
                "n4 [label=\"name\"];\n" +
                "n2 -> n4;\n" +
                "n5 [label=\"identifier='X'\"];\n" +
                "n4 -> n5;\n" +
                "n6 [label=\"comment\"];\n" +
                "n2 -> n6;\n" +
                "n7 [label=\"content='q\\\"q'\"];\n" +
                "n6 -> n7;\n" +
                "}", output);
    }
}