/*
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.transformer.graph;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.mockito.Mockito.doReturn;
import static org.mockito.Mockito.mock;
import org.mule.api.registry.ResolverException;
import org.mule.api.registry.TransformerResolver;
import org.mule.api.transformer.Converter;
import org.mule.api.transformer.DataType;
import org.mule.api.transformer.Transformer;
import org.mule.tck.junit4.AbstractMuleTestCase;
import org.mule.tck.size.SmallTest;
import org.mule.transformer.CompositeConverter;
import org.mule.transformer.builder.MockConverterBuilder;
import org.mule.transformer.builder.MockTransformerBuilder;
import org.junit.BeforeClass;
import org.junit.Test;
@SmallTest
public class GraphTransformerResolverTestCase extends AbstractMuleTestCase
{
private static final DataType XML_DATA_TYPE = mock(DataType.class, "XML_DATA_TYPE");
private static final DataType JSON_DATA_TYPE = mock(DataType.class, "JSON_DATA_TYPE");
private static final DataType INPUT_STREAM_DATA_TYPE = mock(DataType.class, "INPUT_STREAM_DATA_TYPE");
private static final DataType STRING_DATA_TYPE = mock(DataType.class, "STRING_DATA_TYPE");
private static class XML_CLASS
{
}
private static class JSON_CLASS
{
}
private static class INPUT_STREAM_CLASS
{
}
private static class STRING_CLASS
{
}
@BeforeClass
public static void setupDataTypes()
{
doReturn(true).when(XML_DATA_TYPE).isCompatibleWith(XML_DATA_TYPE);
doReturn(XML_CLASS.class).when(XML_DATA_TYPE).getType();
doReturn(true).when(JSON_DATA_TYPE).isCompatibleWith(JSON_DATA_TYPE);
doReturn(JSON_CLASS.class).when(JSON_DATA_TYPE).getType();
doReturn(true).when(INPUT_STREAM_DATA_TYPE).isCompatibleWith(INPUT_STREAM_DATA_TYPE);
doReturn(INPUT_STREAM_CLASS.class).when(INPUT_STREAM_DATA_TYPE).getType();
doReturn(true).when(STRING_DATA_TYPE).isCompatibleWith(STRING_DATA_TYPE);
doReturn(STRING_CLASS.class).when(STRING_DATA_TYPE).getType();
}
private GraphTransformerResolver graphResolver = new GraphTransformerResolver();
@Test
public void cachesResolvedTransformer() throws ResolverException
{
Converter xmlToJson = new MockConverterBuilder().from(XML_DATA_TYPE).to(JSON_DATA_TYPE).build();
Converter inputStreamToXml = new MockConverterBuilder().from(INPUT_STREAM_DATA_TYPE).to(XML_DATA_TYPE).build();
graphResolver.transformerChange(inputStreamToXml, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(xmlToJson, TransformerResolver.RegistryAction.ADDED);
Transformer transformer1 = graphResolver.resolve(INPUT_STREAM_DATA_TYPE, JSON_DATA_TYPE);
Transformer transformer2 = graphResolver.resolve(INPUT_STREAM_DATA_TYPE, JSON_DATA_TYPE);
assertSame(transformer1, transformer2);
}
@Test
public void clearsCacheWhenAddsConverter() throws ResolverException
{
Converter xmlToJson = new MockConverterBuilder().named("xmlToJson").from(XML_DATA_TYPE).to(JSON_DATA_TYPE).build();
Converter inputStreamToXml = new MockConverterBuilder().named("inputStreamToXml").from(INPUT_STREAM_DATA_TYPE).to(XML_DATA_TYPE).build();
graphResolver.transformerChange(inputStreamToXml, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(xmlToJson, TransformerResolver.RegistryAction.ADDED);
Transformer transformer1 = graphResolver.resolve(INPUT_STREAM_DATA_TYPE, JSON_DATA_TYPE);
assertNotNull(transformer1);
Converter xmlToString = new MockConverterBuilder().named("xmlToString").from(XML_DATA_TYPE).to(STRING_DATA_TYPE).build();
graphResolver.transformerChange(xmlToString, TransformerResolver.RegistryAction.ADDED);
Transformer transformer2 = graphResolver.resolve(INPUT_STREAM_DATA_TYPE, JSON_DATA_TYPE);
assertNotSame(transformer1, transformer2);
}
@Test
public void ignoresAddedTransformer() throws ResolverException
{
Converter xmlToJson = new MockConverterBuilder().named("xmlToJson").from(XML_DATA_TYPE).to(JSON_DATA_TYPE).build();
Converter inputStreamToXml = new MockConverterBuilder().named("inputStreamToXml").from(INPUT_STREAM_DATA_TYPE).to(XML_DATA_TYPE).build();
graphResolver.transformerChange(inputStreamToXml, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(xmlToJson, TransformerResolver.RegistryAction.ADDED);
Transformer transformer1 = graphResolver.resolve(INPUT_STREAM_DATA_TYPE, JSON_DATA_TYPE);
assertNotNull(transformer1);
Transformer xmlToString = new MockTransformerBuilder().named("xmlToString").from(XML_DATA_TYPE).to(STRING_DATA_TYPE).build();
graphResolver.transformerChange(xmlToString, TransformerResolver.RegistryAction.ADDED);
Transformer transformer2 = graphResolver.resolve(INPUT_STREAM_DATA_TYPE, JSON_DATA_TYPE);
assertSame(transformer1, transformer2);
}
@Test
public void ignoresRemovedTransformer() throws ResolverException
{
Converter xmlToJson = new MockConverterBuilder().named("xmlToJson").from(XML_DATA_TYPE).to(JSON_DATA_TYPE).build();
Converter inputStreamToXml = new MockConverterBuilder().named("inputStreamToXml").from(INPUT_STREAM_DATA_TYPE).to(XML_DATA_TYPE).build();
graphResolver.transformerChange(inputStreamToXml, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(xmlToJson, TransformerResolver.RegistryAction.ADDED);
Transformer transformer1 = graphResolver.resolve(INPUT_STREAM_DATA_TYPE, JSON_DATA_TYPE);
assertNotNull(transformer1);
Transformer xmlToString = new MockTransformerBuilder().named("xmlToString").from(XML_DATA_TYPE).to(STRING_DATA_TYPE).build();
graphResolver.transformerChange(xmlToString, TransformerResolver.RegistryAction.REMOVED);
Transformer transformer2 = graphResolver.resolve(INPUT_STREAM_DATA_TYPE, JSON_DATA_TYPE);
assertSame(transformer1, transformer2);
}
@Test
public void clearsCacheWhenRemovesTransformer() throws ResolverException
{
Converter xmlToJson = new MockConverterBuilder().from(XML_DATA_TYPE).to(JSON_DATA_TYPE).build();
Converter inputStreamToXml = new MockConverterBuilder().from(INPUT_STREAM_DATA_TYPE).to(XML_DATA_TYPE).build();
graphResolver.transformerChange(inputStreamToXml, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(xmlToJson, TransformerResolver.RegistryAction.ADDED);
Transformer transformer = graphResolver.resolve(INPUT_STREAM_DATA_TYPE, JSON_DATA_TYPE);
assertNotNull(transformer);
graphResolver.transformerChange(inputStreamToXml, TransformerResolver.RegistryAction.REMOVED);
transformer = graphResolver.resolve(INPUT_STREAM_DATA_TYPE, JSON_DATA_TYPE);
assertNull(transformer);
}
@Test
public void resolvesTransformersWithDifferentLength() throws ResolverException
{
Converter xmlToInputStream = new MockConverterBuilder().named("xmlToInputStream").from(XML_DATA_TYPE).to(INPUT_STREAM_DATA_TYPE).weighting(1).build();
Converter xmlToJson = new MockConverterBuilder().named("xmlToJson").from(XML_DATA_TYPE).to(JSON_DATA_TYPE).weighting(1).build();
Converter inputStreamToJson = new MockConverterBuilder().named("inputStreamToJson").from(INPUT_STREAM_DATA_TYPE).to(JSON_DATA_TYPE).weighting(1).build();
graphResolver.transformerChange(xmlToInputStream, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(xmlToJson, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(inputStreamToJson, TransformerResolver.RegistryAction.ADDED);
Transformer transformer = graphResolver.resolve(XML_DATA_TYPE, JSON_DATA_TYPE);
assertEquals(xmlToJson, transformer);
}
@Test
public void resolvesTransformersWithSameLengthAndDifferentWeight() throws ResolverException
{
Converter xmlToInputStream = new MockConverterBuilder().named("xmlToInputStream").from(XML_DATA_TYPE).to(INPUT_STREAM_DATA_TYPE).weighting(1).build();
Converter xmlToString = new MockConverterBuilder().named("xmlToString").from(XML_DATA_TYPE).to(STRING_DATA_TYPE).weighting(1).build();
Converter inputStreamToJson = new MockConverterBuilder().named("inputStreamToJson").from(INPUT_STREAM_DATA_TYPE).to(JSON_DATA_TYPE).weighting(2).build();
Converter stringToJson = new MockConverterBuilder().named("stringToJson").from(STRING_DATA_TYPE).to(JSON_DATA_TYPE).weighting(1).build();
graphResolver.transformerChange(xmlToInputStream, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(xmlToString, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(inputStreamToJson, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(stringToJson, TransformerResolver.RegistryAction.ADDED);
Transformer transformer = graphResolver.resolve(XML_DATA_TYPE, JSON_DATA_TYPE);
assertTrue(transformer instanceof CompositeConverter);
CompositeConverter compositeConverter = (CompositeConverter) transformer;
assertEquals(2, compositeConverter.getConverters().size());
assertEquals(xmlToInputStream, compositeConverter.getConverters().get(0));
assertEquals(inputStreamToJson, compositeConverter.getConverters().get(1));
}
@Test
public void resolvesTransformerWithSameLengthAndSameWeight() throws ResolverException
{
Converter xmlToInputStream = new MockConverterBuilder().named("xmlToInputStream").from(XML_DATA_TYPE).to(INPUT_STREAM_DATA_TYPE).weighting(1).build();
Converter xmlToString = new MockConverterBuilder().named("xmlToString").from(XML_DATA_TYPE).to(STRING_DATA_TYPE).weighting(1).build();
Converter inputStreamToJson = new MockConverterBuilder().named("inputStreamToJson").from(INPUT_STREAM_DATA_TYPE).to(JSON_DATA_TYPE).weighting(1).build();
Converter stringToJson = new MockConverterBuilder().named("stringToJson").from(STRING_DATA_TYPE).to(JSON_DATA_TYPE).weighting(1).build();
graphResolver.transformerChange(xmlToInputStream, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(xmlToString, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(inputStreamToJson, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(stringToJson, TransformerResolver.RegistryAction.ADDED);
Transformer transformer = graphResolver.resolve(XML_DATA_TYPE, JSON_DATA_TYPE);
assertTrue(transformer instanceof CompositeConverter);
CompositeConverter compositeConverter = (CompositeConverter) transformer;
assertEquals(2, compositeConverter.getConverters().size());
assertEquals(xmlToInputStream, compositeConverter.getConverters().get(0));
assertEquals(inputStreamToJson, compositeConverter.getConverters().get(1));
}
@Test(expected = ResolverException.class)
public void cannotResolveTransformerWithSameLengthAndSameWeightAndSameName() throws ResolverException
{
Converter xmlToInputStream1 = new MockConverterBuilder().named("xmlToInputStream").from(XML_DATA_TYPE).to(INPUT_STREAM_DATA_TYPE).weighting(1).build();
Converter xmlToInputStream2 = new MockConverterBuilder().named("xmlToInputStream").from(XML_DATA_TYPE).to(INPUT_STREAM_DATA_TYPE).weighting(1).build();
graphResolver.transformerChange(xmlToInputStream1, TransformerResolver.RegistryAction.ADDED);
graphResolver.transformerChange(xmlToInputStream2, TransformerResolver.RegistryAction.ADDED);
graphResolver.resolve(XML_DATA_TYPE, INPUT_STREAM_DATA_TYPE);
}
}