aether-impl/src/test/java/org/eclipse/aether/internal/impl/PrioritizedComponentTest.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.eclipse.aether.internal.impl;

import static org.junit.Assert.*;

import org.junit.Test;

public class PrioritizedComponentTest
{

    @Test
    public void testIsDisabled()
    {
        assertTrue( new PrioritizedComponent<String>( "", String.class, Float.NaN, 0 ).isDisabled() );
        assertFalse( new PrioritizedComponent<String>( "", String.class, 0, 0 ).isDisabled() );
        assertFalse( new PrioritizedComponent<String>( "", String.class, 1, 0 ).isDisabled() );
        assertFalse( new PrioritizedComponent<String>( "", String.class, -1, 0 ).isDisabled() );
    }

    @Test
    public void testCompareTo()
    {
        assertCompare( 0, Float.NaN, Float.NaN );
        assertCompare( 0, 0, 0 );

        assertCompare( 1, 0, 1 );
        assertCompare( 1, 2, Float.POSITIVE_INFINITY );
        assertCompare( 1, Float.NEGATIVE_INFINITY, -3 );

        assertCompare( 1, Float.NaN, 0 );
        assertCompare( 1, Float.NaN, -1 );
        assertCompare( 1, Float.NaN, Float.NEGATIVE_INFINITY );
        assertCompare( 1, Float.NaN, Float.POSITIVE_INFINITY );

        assertCompare( -1, Float.NaN, 0, 1 );
        assertCompare( -1, 10, 0, 1 );
    }

    private void assertCompare( int expected, float priority1, float priority2 )
    {
        PrioritizedComponent<?> one = new PrioritizedComponent<String>( "", String.class, priority1, 0 );
        PrioritizedComponent<?> two = new PrioritizedComponent<String>( "", String.class, priority2, 0 );
        assertEquals( expected, one.compareTo( two ) );
        assertEquals( -expected, two.compareTo( one ) );
    }

    private void assertCompare( int expected, float priority, int index1, int index2 )
    {
        PrioritizedComponent<?> one = new PrioritizedComponent<String>( "", String.class, priority, index1 );
        PrioritizedComponent<?> two = new PrioritizedComponent<String>( "", String.class, priority, index2 );
        assertEquals( expected, one.compareTo( two ) );
        assertEquals( -expected, two.compareTo( one ) );
    }

}