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package org.apache.maven.toolchain;

/*
 * 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.
 */

import static org.junit.Assert.assertEquals;
import static org.mockito.Matchers.anyMap;
import static org.mockito.Matchers.isA;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

import java.util.Arrays;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.maven.execution.DefaultMavenExecutionRequest;
import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.toolchain.model.ToolchainModel;
import org.codehaus.plexus.logging.Logger;
import org.junit.Before;
import org.junit.Test;
import org.mockito.InjectMocks;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

public class DefaultToolchainManagerTest
{
     // Mocks to inject into toolchainManager
    @Mock
    private Logger logger;

    @InjectMocks
    private DefaultToolchainManager toolchainManager;

    @Mock
    private ToolchainFactory toolchainFactory_basicType;

    @Mock
    private ToolchainFactory toolchainFactory_rareType;

    @Before
    public void onSetup() throws Exception
    {
        toolchainManager = new DefaultToolchainManager();

        MockitoAnnotations.initMocks( this );

        toolchainManager.factories = new HashMap<String, ToolchainFactory>();
        toolchainManager.factories.put( "basic", toolchainFactory_basicType );
        toolchainManager.factories.put( "rare", toolchainFactory_rareType );
    }

    @Test
    public void testNoModels()
    {
        MavenSession session = mock( MavenSession.class );
        MavenExecutionRequest executionRequest = new DefaultMavenExecutionRequest();
        when( session.getRequest() ).thenReturn( executionRequest );

        List<Toolchain> toolchains = toolchainManager.getToolchains( session, "unknown", null );

        assertEquals( 0, toolchains.size() );
    }

    @Test
    public void testModelNoFactory()
    {
        MavenSession session = mock( MavenSession.class );
        MavenExecutionRequest executionRequest = new DefaultMavenExecutionRequest();
        Map<String, List<ToolchainModel>> toolchainModels = new HashMap<String, List<ToolchainModel>>();
        toolchainModels.put( "unknown", Collections.singletonList( new ToolchainModel() ) );
        executionRequest.setToolchains( toolchainModels );
        when( session.getRequest() ).thenReturn( executionRequest );

        List<Toolchain> toolchains = toolchainManager.getToolchains( session, "unknown", null );

        assertEquals( 0, toolchains.size() );
        verify( logger ).error( "Missing toolchain factory for type: unknown. Possibly caused by misconfigured project." );
    }

    @Test
    public void testModelAndFactory()
    {
        MavenSession session = mock( MavenSession.class );
        MavenExecutionRequest executionRequest = new DefaultMavenExecutionRequest();
        Map<String, List<ToolchainModel>> toolchainModels = new HashMap<String, List<ToolchainModel>>();
        toolchainModels.put( "basic", Arrays.asList( new ToolchainModel(), new ToolchainModel() ) );
        toolchainModels.put( "rare", Collections.singletonList( new ToolchainModel() ) );
        executionRequest.setToolchains( toolchainModels );
        when( session.getRequest() ).thenReturn( executionRequest );

        List<Toolchain> toolchains = toolchainManager.getToolchains( session, "rare", null );

        assertEquals( 1, toolchains.size() );
    }

    @Test
    public void testModelsAndFactory()
    {
        MavenSession session = mock( MavenSession.class );
        MavenExecutionRequest executionRequest = new DefaultMavenExecutionRequest();
        Map<String, List<ToolchainModel>> toolchainModels = new HashMap<String, List<ToolchainModel>>();
        toolchainModels.put( "basic", Arrays.asList( new ToolchainModel(), new ToolchainModel() ) );
        toolchainModels.put( "rare", Collections.singletonList( new ToolchainModel() ) );
        executionRequest.setToolchains( toolchainModels );
        when( session.getRequest() ).thenReturn( executionRequest );

        List<Toolchain> toolchains = toolchainManager.getToolchains( session, "basic", null );

        assertEquals( 2, toolchains.size() );
    }

    @Test
    public void testRequirements()
        throws Exception
    {
        MavenSession session = mock( MavenSession.class );
        MavenExecutionRequest executionRequest = new DefaultMavenExecutionRequest();
        Map<String, List<ToolchainModel>> toolchainModels = new HashMap<String, List<ToolchainModel>>();
        toolchainModels.put( "basic", Arrays.asList( new ToolchainModel(), new ToolchainModel() ) );
        toolchainModels.put( "rare", Collections.singletonList( new ToolchainModel() ) );
        executionRequest.setToolchains( toolchainModels );
        when( session.getRequest() ).thenReturn( executionRequest );
        ToolchainPrivate basicPrivate = mock( ToolchainPrivate.class );
        when( basicPrivate.matchesRequirements( anyMap() ) ).thenReturn( false ).thenReturn( true );
        when( toolchainFactory_basicType.createToolchain( isA( ToolchainModel.class ) ) ).thenReturn( basicPrivate );

        List<Toolchain> toolchains =
            toolchainManager.getToolchains( session, "basic", Collections.singletonMap( "key", "value" ) );

        assertEquals( 1, toolchains.size() );
    }
}