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 * regarding copyright ownership.  The ASF licenses this file   *
 * to you under the Apache License, Version 2.0 (the            *
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package org.apache.james.mime4j.storage;

import junit.framework.TestCase;

public class DefaultStorageProviderTest extends TestCase {

    @Override
    protected void tearDown() throws Exception {
        System.getProperties().remove(
                DefaultStorageProvider.DEFAULT_STORAGE_PROVIDER_PROPERTY);
        DefaultStorageProvider.reset();
    }

    public void testDefaultInstance() throws Exception {
        System.getProperties().remove(
                DefaultStorageProvider.DEFAULT_STORAGE_PROVIDER_PROPERTY);
        DefaultStorageProvider.reset();

        StorageProvider instance = DefaultStorageProvider.getInstance();
        assertTrue(instance instanceof ThresholdStorageProvider);
    }

    public void testSetDefaultProperty() throws Exception {
        System.setProperty(
                DefaultStorageProvider.DEFAULT_STORAGE_PROVIDER_PROPERTY,
                MemoryStorageProvider.class.getName());
        DefaultStorageProvider.reset();

        StorageProvider instance = DefaultStorageProvider.getInstance();
        assertTrue(instance instanceof MemoryStorageProvider);
    }

    public void testSetter() throws Exception {
        StorageProvider instance = new MemoryStorageProvider();

        DefaultStorageProvider.setInstance(instance);
        assertSame(instance, DefaultStorageProvider.getInstance());
    }

}