DefaultModuleOptionsMetadataResolverTests.java

/*
 * Copyright 2014 the original author or authors.
 *
 * Licensed 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.springframework.xd.module.options;

import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import static org.springframework.xd.module.ModuleType.*;
import static org.springframework.xd.module.options.ModuleOptionMatchers.*;

import org.junit.Test;

import org.springframework.xd.module.ModuleDefinition;
import org.springframework.xd.module.ModuleDefinitions;


/**
 * Tests for {@link DefaultModuleOptionsMetadataResolver}.
 *
 * @author Eric Bottard
 */
public class DefaultModuleOptionsMetadataResolverTests {

	private DefaultModuleOptionsMetadataResolver metadataResolver = new DefaultModuleOptionsMetadataResolver();

	@Test
	@SuppressWarnings("unchecked")
	public void testPojoOptionsConstruction() {
		String resource = "classpath:/DefaultModuleOptionsMetadataResolverTests-modules/source/module1/";
		ModuleDefinition definition = ModuleDefinitions.simple("module1", source, resource);
		ModuleOptionsMetadata metadata = metadataResolver.resolve(definition);
		assertThat(
				metadata,
				containsInAnyOrder(moduleOptionNamed("bar"), moduleOptionNamed("foo")));
	}

	@Test
	@SuppressWarnings("unchecked")
	public void testMixin() {
		String resource =
				"classpath:/DefaultModuleOptionsMetadataResolverTests-modules/source/module2/";
		ModuleDefinition definition = ModuleDefinitions.simple("module2", source, resource);
		ModuleOptionsMetadata metadata = metadataResolver.resolve(definition);
		assertThat(
				metadata,
				containsInAnyOrder(moduleOptionNamed("bar"), moduleOptionNamed("fizz"), moduleOptionNamed("foo"),
						moduleOptionNamed("optionDefinedHere")));
	}

	/**
	 * This test has the "foo" option *exactly* overlapping from different mixins: this is ok, and only one copy is
	 * visible.
	 */
	@Test
	@SuppressWarnings("unchecked")
	public void testMixinOverlap() {
		String resource = "classpath:/DefaultModuleOptionsMetadataResolverTests-modules/source/module3/";
		ModuleDefinition definition = ModuleDefinitions.simple("module3", source, resource);
		ModuleOptionsMetadata metadata = metadataResolver.resolve(definition);
		assertThat(
				metadata,
				containsInAnyOrder(moduleOptionNamed("foo"), moduleOptionNamed("bar")));
	}

	/**
	 * This test has the "foo" option almost overlapping: for the same name "foo", two options exist with slightly
	 * different attributes, this is an error.
	 */
	@Test(expected = IllegalArgumentException.class)
	public void testMixinAlmostOverlap() {
		String resource = "classpath:/DefaultModuleOptionsMetadataResolverTests-modules/source/module4/";
		ModuleDefinition definition = ModuleDefinitions.simple("module4", source, resource);
		metadataResolver.resolve(definition);
	}

	@Test
	public void testNormalMetadataTypeValueTrimmed() {
		String resource = "classpath:/DefaultModuleOptionsMetadataResolverTests-modules/source/module5/";
		ModuleDefinition definition = ModuleDefinitions.simple("module5", source, resource);
		ModuleOptionsMetadata metadata = metadataResolver.resolve(definition);
		assertThat(metadata, hasItem(moduleOptionNamed("foo")));

		ModuleOption foo = metadata.iterator().next();
		assertThat(foo.getType(), equalTo(String.class.getName()));
	}

	@Test
	@SuppressWarnings("unchecked")
	public void testOptionClassValueTrimmed() {
		String resource = "classpath:/DefaultModuleOptionsMetadataResolverTests-modules/source/module6/";
		ModuleDefinition definition = ModuleDefinitions.simple("module6", source, resource);
		ModuleOptionsMetadata metadata = metadataResolver.resolve(definition);
		assertThat(
				metadata,
				containsInAnyOrder(moduleOptionNamed("bar"), moduleOptionNamed("foo")));
	}

}