test.Tester.java Source code

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Here is the source code for test.Tester.java

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/*
 *  This file is part of the CloudLens project.
 *
 * Copyright omitted for blind review
 *
 * Licensed under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 *
 * 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 test;

import static org.junit.Assert.*;

import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.PrintStream;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.ArrayList;
import java.util.Collection;

import org.apache.commons.io.FilenameUtils;
import org.apache.commons.lang3.StringUtils;

import cloudlens.cli.EvalZeppelinExport;
import cloudlens.cli.Main;
import cloudlens.engine.CLBuilder;

public class Tester {
    public ByteArrayOutputStream outContent = new ByteArrayOutputStream();
    public ByteArrayOutputStream errContent = new ByteArrayOutputStream();

    public void setUpStreams() {
        System.setOut(new PrintStream(outContent));
        System.setErr(new PrintStream(errContent));
    }

    public void cleanUpStreams() {
        System.setOut(null);
        System.setErr(null);
    }

    public void test(String options, String log, String script, String output) throws Exception {
        final String cl = options + " -log " + log + " -run " + script;
        CLBuilder.reset();
        Main.main(StringUtils.split(cl));
        final String out = readFile(output);
        assertEquals(normalizeEOL(out), normalizeEOL(outContent.toString()));
    }

    public void testErr(String options, String log, String script, String output) throws Exception {
        final String cl = options + " -log " + log + " -run " + script;
        CLBuilder.reset();
        Main.main(StringUtils.split(cl));
        final String out = readFile(output);
        assertEquals(normalizeEOL(out), normalizeEOL(errContent.toString()));
    }

    public void testZeppelin(String script, String output) throws Exception {
        CLBuilder.reset();
        EvalZeppelinExport.main(new String[] { script });
        final String out = readFile(output);
        assertEquals(normalizeEOL(out), normalizeEOL(outContent.toString()));
    }

    private String readFile(String path) throws IOException {
        final byte[] encoded = Files.readAllBytes(Paths.get(path));
        return new String(encoded, Charset.defaultCharset());
    }

    private String normalizeEOL(String str) {
        return str.replaceAll("\\r\\n", "\n").replaceAll("\\r", "\n");
    }

    static public Collection<Object[]> getTests(String dirName, String scriptExt) {
        final Collection<Object[]> testArgs = new ArrayList<Object[]>();
        final File dir = new File(dirName);
        for (final File file : dir.listFiles()) {
            if (file.isFile()) {
                final String filename = file.getName();
                if (FilenameUtils.getExtension(filename).equals("out")) {
                    final String name = FilenameUtils.removeExtension(filename);
                    final String longName = dirName + "/" + name;
                    final String script = longName + scriptExt;
                    final String log = longName + ".log";
                    final String output = longName + ".out";

                    String options;
                    try {
                        options = new String(Files.readAllBytes(Paths.get(longName + ".opt")));
                    } catch (final IOException e) {
                        options = "";
                    }

                    testArgs.add(new Object[] { name, options, log, script, output });
                }
            }
        }
        return testArgs;
    }
}