MetricsResourceTest.java
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/*
* Copyright 2014-2015 Open Networking Laboratory
*
* 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.onosproject.rest;
import com.codahale.metrics.Counter;
import com.codahale.metrics.Meter;
import com.codahale.metrics.Metric;
import com.eclipsesource.json.JsonArray;
import com.eclipsesource.json.JsonObject;
import com.google.common.collect.ImmutableMap;
import com.sun.jersey.api.client.WebResource;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.onlab.metrics.MetricsService;
import org.onlab.osgi.ServiceDirectory;
import org.onlab.osgi.TestServiceDirectory;
import org.onlab.rest.BaseResource;
import org.onosproject.codec.CodecService;
import org.onosproject.codec.impl.CodecManager;
import static org.easymock.EasyMock.createMock;
import static org.easymock.EasyMock.expect;
import static org.easymock.EasyMock.replay;
import static org.easymock.EasyMock.verify;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.notNullValue;
import static org.junit.Assert.assertThat;
/**
* Unit tests for Metrics REST APIs.
*/
public class MetricsResourceTest extends ResourceTest {
MetricsService mockMetricsService;
/**
* Initializes test mocks and environment.
*/
@Before
public void setUpTest() {
mockMetricsService = createMock(MetricsService.class);
// Register the services needed for the test
final CodecManager codecService = new CodecManager();
codecService.activate();
ServiceDirectory testDirectory =
new TestServiceDirectory()
.add(MetricsService.class, mockMetricsService)
.add(CodecService.class, codecService);
BaseResource.setServiceDirectory(testDirectory);
}
/**
* Verifies mocks.
*/
@After
public void tearDownTest() {
verify(mockMetricsService);
}
/**
* Tests that a fetch of a non-existent object throws an exception.
*/
@Test
public void testBadGet() {
Counter onosCounter = new Counter();
onosCounter.inc();
Meter onosMeter = new Meter();
onosMeter.mark();
ImmutableMap<String, Metric> metrics =
new ImmutableMap.Builder<String, Metric>()
.put("onosCounter", onosCounter)
.put("onosMeter", onosMeter)
.build();
expect(mockMetricsService.getMetrics())
.andReturn(metrics)
.anyTimes();
replay(mockMetricsService);
WebResource rs = resource();
String response = rs.path("metrics").get(String.class);
assertThat(response, containsString("{\"metrics\":["));
JsonObject result = JsonObject.readFrom(response);
assertThat(result, notNullValue());
JsonArray jsonMetrics = result.get("metrics").asArray();
assertThat(jsonMetrics, notNullValue());
assertThat(jsonMetrics.size(), is(2));
}
}