log4j-core/src/test/java/org/apache/logging/log4j/core/impl/ContextDataFactoryPropertySetTest.java

/*
 * 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.logging.log4j.core.impl;

import org.junit.Test;

import static org.junit.Assert.*;

/**
 * Tests the ContextDataFactory class.
 */
public class ContextDataFactoryPropertySetTest {

    @Test
    public void noArgReturnsSpecifiedImplIfPropertySpecified() throws Exception {
        System.setProperty("log4j2.ContextData", FactoryTestStringMap.class.getName());
        assertTrue(ContextDataFactory.createContextData() instanceof FactoryTestStringMap);
        System.clearProperty("log4j2.ContextData");
    }

    @Test
    public void intArgReturnsSpecifiedImplIfPropertySpecified() throws Exception {
        System.setProperty("log4j2.ContextData", FactoryTestStringMap.class.getName());
        assertTrue(ContextDataFactory.createContextData(2) instanceof FactoryTestStringMap);
        System.clearProperty("log4j2.ContextData");
    }

    @Test
    public void intArgSetsCapacityIfPropertySpecified() throws Exception {
        System.setProperty("log4j2.ContextData", FactoryTestStringMap.class.getName());
        final FactoryTestStringMap actual = (FactoryTestStringMap) ContextDataFactory.createContextData(2);
        assertEquals(2, actual.initialCapacity);
        System.clearProperty("log4j2.ContextData");
    }
}