WeavingIT.java

/*
 * Copyright 2012-2016 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.glowroot.agent.tests;

import java.util.Iterator;

import org.junit.After;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;

import org.glowroot.agent.it.harness.AppUnderTest;
import org.glowroot.agent.it.harness.Container;
import org.glowroot.agent.it.harness.Containers;
import org.glowroot.agent.tests.app.LevelOne;
import org.glowroot.agent.tests.app.LevelTwo;
import org.glowroot.wire.api.model.TraceOuterClass.Trace;

import static org.assertj.core.api.Assertions.assertThat;

public class WeavingIT {

    private static Container container;

    @BeforeClass
    public static void setUp() throws Exception {
        container = Containers.create();
    }

    @AfterClass
    public static void tearDown() throws Exception {
        container.close();
    }

    @After
    public void afterEachTest() throws Exception {
        container.checkAndReset();
    }

    @Test
    public void shouldReadTraces() throws Exception {
        // when
        Trace trace = container.execute(ShouldGenerateTraceWithNestedEntries.class);

        // then
        assertThat(trace.getHeader().getHeadline()).isEqualTo("Level One");

        Iterator<Trace.Entry> i = trace.getEntryList().iterator();

        Trace.Entry entry = i.next();
        assertThat(entry.getDepth()).isEqualTo(0);
        assertThat(entry.getMessage()).isEqualTo("Level Two");
    }

    public static class ShouldGenerateTraceWithNestedEntries implements AppUnderTest {
        public ShouldGenerateTraceWithNestedEntries() {
            // force the subclass to be loaded first
            LevelTwoSubclass.class.getClass();
        }
        @Override
        public void executeApp() {
            new LevelOne().call("a", "b");
        }
    }

    public static class LevelTwoSubclass extends LevelTwo {}
}