webhcat/svr/src/test/java/org/apache/hcatalog/templeton/tool/TestTrivialExecService.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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 org.apache.hcatalog.templeton.tool;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.HashMap;

import org.junit.Assert;
import org.junit.Test;

public class TestTrivialExecService {
    @Test
    public void test() {
        ArrayList<String> list = new ArrayList<String>();
        list.add("echo");
        list.add("success");
        BufferedReader out = null;
        BufferedReader err = null;
        try {
            Process process = TrivialExecService.getInstance()
                .run(list,
                    new ArrayList<String>(),
                    new HashMap<String, String>());
            out = new BufferedReader(new InputStreamReader(
                process.getInputStream()));
            err = new BufferedReader(new InputStreamReader(
                process.getErrorStream()));
            Assert.assertEquals("success", out.readLine());
            out.close();
            String line;
            while ((line = err.readLine()) != null) {
                Assert.fail(line);
            }
            process.waitFor();
        } catch (Exception e) {
            e.printStackTrace();
            Assert.fail("Process caused exception.");
        } finally {
            try {
                out.close();
            } catch (Exception ex) {
                // Whatever.
            }
            try {
                err.close();
            } catch (Exception ex) {
                // Whatever
            }
        }
    }
}