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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.cayenne;

import org.apache.cayenne.cache.QueryCache;
import org.apache.cayenne.configuration.CayenneRuntime;
import org.apache.cayenne.di.Binder;
import org.apache.cayenne.di.DIBootstrap;
import org.apache.cayenne.di.Injector;
import org.apache.cayenne.di.Module;
import org.junit.Test;

import java.util.Map;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.mock;

public class BaseContextTest {

    @Test
    public void testUserPropertiesLazyInit() {
        BaseContext context = new MockBaseContext();
        assertNull(context.userProperties);

        Map<String, Object> properties = context.getUserProperties();
        assertNotNull(properties);
        assertSame(properties, context.getUserProperties());
    }

    @Test
    public void testAttachToRuntimeIfNeeded() {

        final DataChannel channel = mock(DataChannel.class);
        final QueryCache cache = mock(QueryCache.class);

        Module testModule = new Module() {

            public void configure(Binder binder) {
                binder.bind(DataChannel.class).toInstance(channel);
                binder.bind(QueryCache.class).toInstance(cache);
            }
        };

        Injector injector = DIBootstrap.createInjector(testModule);

        BaseContext context = new MockBaseContext();
        assertNull(context.channel);
        assertNull(context.queryCache);

        Injector oldInjector = CayenneRuntime.getThreadInjector();
        try {

            CayenneRuntime.bindThreadInjector(injector);

            assertTrue(context.attachToRuntimeIfNeeded());
            assertSame(channel, context.channel);

            assertFalse(context.attachToRuntimeIfNeeded());
            assertFalse(context.attachToRuntimeIfNeeded());
        }
        finally {
            CayenneRuntime.bindThreadInjector(oldInjector);
        }
    }

    @Test
    public void testAttachToRuntimeIfNeeded_NoStack() {

        BaseContext context = new MockBaseContext();
        assertNull(context.channel);
        assertNull(context.queryCache);

        try {
            context.attachToRuntimeIfNeeded();
            fail("No thread stack, must have thrown");
        }
        catch (CayenneRuntimeException e) {
            // expected
        }
    }
}