MetricReaderPublicMetricsTests.java

/*
 * Copyright 2012-2017 the original author or authors.
 *
 * 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 org.springframework.boot.actuate.endpoint;

import java.util.ArrayList;
import java.util.List;

import org.junit.Test;

import org.springframework.boot.actuate.metrics.Metric;
import org.springframework.boot.actuate.metrics.reader.MetricReader;

import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.BDDMockito.given;
import static org.mockito.Mockito.mock;

/**
 * Tests for {@link MetricReaderPublicMetrics}.
 *
 * @author Phillip Webb
 */
public class MetricReaderPublicMetricsTests {

	@Test
	public void exposesMetrics() {
		List<Metric<?>> metrics = new ArrayList<>();
		metrics.add(mock(Metric.class));
		metrics.add(mock(Metric.class));
		MetricReader reader = mock(MetricReader.class);
		given(reader.findAll()).willReturn(metrics);
		MetricReaderPublicMetrics publicMetrics = new MetricReaderPublicMetrics(reader);
		assertThat(publicMetrics.metrics()).isEqualTo(metrics);
	}

}