/*
 * 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.beam.runners.dataflow.worker;

import static org.hamcrest.Matchers.containsString;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.fail;

import java.util.Set;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import org.apache.beam.vendor.guava.v20_0.com.google.common.collect.Sets;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/** Unit tests for {@link LogRecordMatcher}. */
@RunWith(JUnit4.class)
@SuppressWarnings("AssertionFailureIgnored")
public class LogRecordMatcherTest {
  @Test
  public void testMatchingLogRecord() {
    String msg = "any message";
    LogRecord record = new LogRecord(Level.INFO, msg);

    assertThat(record, LogRecordMatcher.hasLog(msg));
    assertThat(record, LogRecordMatcher.hasLog(Level.INFO, msg));
  }

  @Test
  public void testMatchesSubstring() {
    LogRecord record = new LogRecord(Level.INFO, "hello world");

    assertThat(record, LogRecordMatcher.hasLog("hello"));
    assertThat(record, LogRecordMatcher.hasLog("world"));
    assertThat("Should match empty substring", record, LogRecordMatcher.hasLog(""));
  }

  @Test
  public void testMatchesCollection() {
    Set<LogRecord> records = Sets.newHashSet(new LogRecord(Level.SEVERE, "error"));
    assertThat(records, LogRecordMatcher.hasLogItem(Level.SEVERE, "error"));
  }

  @Test
  public void testLevelMismatch() {
    LogRecord record = new LogRecord(Level.WARNING, "abc");
    try {
      assertThat(record, LogRecordMatcher.hasLog(Level.CONFIG, ""));
    } catch (AssertionError e) {
      return;
    }

    fail("Expected exception not thrown");
  }

  @Test
  public void testMessageMismatch() {
    LogRecord record = new LogRecord(Level.INFO, "foo");
    try {
      assertThat(record, LogRecordMatcher.hasLog("bar"));
    } catch (AssertionError e) {
      return;
    }

    fail("Expected exception not thrown");
  }

  @Test
  public void testFailureDescription() {
    LogRecord record = new LogRecord(Level.WARNING, "foo");
    try {
      assertThat(record, LogRecordMatcher.hasLog(Level.INFO, "bar"));
    } catch (AssertionError e) {
      assertThat(
          e.getMessage(), containsString("Expected: level is <INFO> and message containing <bar>"));
      return;
    }

    fail("Expected exception not thrown");
  }
}
