/*
 * Copyright (c) 2008-2017, Hazelcast, Inc. 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.hazelcast.internal.diagnostics;

import com.hazelcast.logging.Logger;
import com.hazelcast.test.HazelcastSerialClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import java.io.CharArrayWriter;
import java.io.PrintWriter;

import static com.hazelcast.util.StringUtil.LINE_SEPARATOR;
import static org.junit.Assert.assertEquals;

@RunWith(HazelcastSerialClassRunner.class)
@Category(QuickTest.class)
public class SingleLineDiagnosticsLogWriterTest extends HazelcastTestSupport {

    private CharArrayWriter out = new CharArrayWriter();
    private SingleLineDiagnosticsLogWriter writer;

    @Before
    public void setup() {
        writer = new SingleLineDiagnosticsLogWriter();
        writer.init(new PrintWriter(out));
    }

    @Test
    public void test() {
        writer.startSection("SomeSection");

        writer.writeKeyValueEntry("boolean", true);
        writer.writeKeyValueEntry("long", 10L);

        writer.startSection("SubSection");
        writer.writeKeyValueEntry("integer", 10);
        writer.endSection();

        writer.writeKeyValueEntry("string", "foo");
        writer.writeKeyValueEntry("double", 11d);
        writer.writeEntry("foobar");

        writer.endSection();

        assertContains(out.toString(),
                "SomeSection[boolean=true,long=10,SubSection[integer=10],string=foo,double=11.0,foobar]");
    }

    @Test
    public void testWrite() {
        DummyDiagnosticsPlugin plugin = new DummyDiagnosticsPlugin();
        plugin.run(writer);

        String content = out.toString();
        String[] split = content.split(" ");
        assertEquals(3, split.length);
        assertEquals("somesection[]" + LINE_SEPARATOR, split[2]);
    }

    private static class DummyDiagnosticsPlugin extends DiagnosticsPlugin {
        DummyDiagnosticsPlugin() {
            super(Logger.getLogger(SingleLineDiagnosticsLogWriterTest.class));
        }

        @Override
        public long getPeriodMillis() {
            return 0;
        }

        @Override
        public void onStart() {

        }

        @Override
        public void run(DiagnosticsLogWriter writer) {
            writer.startSection("somesection");
            writer.endSection();
        }
    }
}