com.twitter.heron.common.config.ConfigReaderTest.java Source code

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Here is the source code for com.twitter.heron.common.config.ConfigReaderTest.java

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// Copyright 2016 Twitter. All rights reserved.
//
// 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 com.twitter.heron.common.config;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Map;

import org.apache.commons.io.IOUtils;
import org.junit.Assert;
import org.junit.Test;

public class ConfigReaderTest {
    private static final String ROLE_KEY = "role";
    private static final String ENVIRON_KEY = "environ";
    private static final String USER_KEY = "user";

    private static final String LAUNCHER_CLASS_KEY = "heron.launcher.class";

    private static final String RESOURCE_LOC = "/heron/common/tests/resources/defaults.yaml";

    private void testProperty(Map<String, Object> props) {
        Assert.assertEquals("role", props.get(ROLE_KEY));
        Assert.assertEquals("environ", props.get(ENVIRON_KEY));
        Assert.assertEquals("com.twitter.heron.scheduler.aurora.AuroraLauncher", props.get(LAUNCHER_CLASS_KEY));
        Assert.assertNull(props.get(USER_KEY));
    }

    private InputStream loadResource() {
        InputStream inputStream = getClass().getResourceAsStream(RESOURCE_LOC);
        if (inputStream == null) {
            throw new RuntimeException("Sample output file not found");
        }
        return inputStream;
    }

    @Test
    public void testLoadFile() throws IOException {
        InputStream inputStream = loadResource();
        File file = File.createTempFile("defaults_temp", "yaml");
        file.deleteOnExit();
        OutputStream outputStream = new FileOutputStream(file);
        IOUtils.copy(inputStream, outputStream);
        outputStream.close();
        Map<String, Object> props = ConfigReader.loadFile(file.getAbsolutePath());
        testProperty(props);
    }

    @Test
    public void testLoadStream() {
        InputStream inputStream = loadResource();
        Map<String, Object> props = ConfigReader.loadStream(inputStream);
        testProperty(props);
    }
}