com.google.dart.java2dart.AbstractSemanticTest.java Source code

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Here is the source code for com.google.dart.java2dart.AbstractSemanticTest.java

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/*
 * Copyright (c) 2012, the Dart project authors.
 * 
 * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
 * in compliance with the License. You may obtain a copy of the License at
 * 
 * http://www.eclipse.org/legal/epl-v10.html
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License
 * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied. See the License for the specific language governing permissions and limitations under
 * the License.
 */

package com.google.dart.java2dart;

import com.google.common.base.Joiner;
import com.google.common.io.Files;
import com.google.dart.engine.ast.ASTNode;
import com.google.dart.engine.utilities.io.PrintStringWriter;
import com.google.dart.java2dart.util.ToFormattedSourceVisitor;

import junit.framework.TestCase;

import org.apache.commons.io.Charsets;
import org.apache.commons.io.FileUtils;
import org.apache.commons.lang3.StringUtils;

import java.io.File;

/**
 * Test for general Java semantics to Dart translation.
 */
public class AbstractSemanticTest extends TestCase {

    /**
     * @return the formatted Dart source dump of the given {@link ASTNode}.
     */
    protected static String getFormattedSource(ASTNode node) {
        PrintStringWriter writer = new PrintStringWriter();
        node.accept(new ToFormattedSourceVisitor(writer));
        return writer.toString();
    }

    protected static void printFormattedSource(ASTNode node) {
        String source = getFormattedSource(node);
        String[] lines = StringUtils.split(source, '\n');
        for (int i = 0; i < lines.length; i++) {
            String line = lines[i];
            line = StringUtils.replace(line, "\"", "\\\"");
            System.out.print("\"");
            System.out.print(line);
            if (i != lines.length - 1) {
                System.out.println("\",");
            } else {
                System.out.println("\"");
            }
        }
    }

    /**
     * @return the single {@link String} with "\n" separated lines.
     */
    protected static String toString(String... lines) {
        return Joiner.on("\n").join(lines);
    }

    protected File tmpFolder;

    /**
     * Sets the content of the file with given path relative to {@link #tmpFolder}.
     */
    protected File setFileLines(String path, String content) throws Exception {
        File toFile = new File(tmpFolder, path);
        Files.createParentDirs(toFile);
        Files.write(content, toFile, Charsets.UTF_8);
        return toFile;
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();
        tmpFolder = Files.createTempDir();
    }

    @Override
    protected void tearDown() throws Exception {
        FileUtils.deleteDirectory(tmpFolder);
        super.tearDown();
    }
}