/*
* Copyright 2002-2017 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.context.index;
import java.io.IOException;
import java.util.Set;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.springframework.core.io.ClassPathResource;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
/**
* Tests for {@link CandidateComponentsIndexLoader}.
*
* @author Stephane Nicoll
*/
public class CandidateComponentsIndexLoaderTests {
@Rule
public final ExpectedException thrown = ExpectedException.none();
@Test
public void validateIndexIsDisabledByDefault() {
CandidateComponentsIndex index = CandidateComponentsIndexLoader.loadIndex(null);
assertThat("No spring.components should be available at the default location", index, is(nullValue()));
}
@Test
public void loadIndexSeveralMatches() {
CandidateComponentsIndex index = CandidateComponentsIndexLoader.loadIndex(
CandidateComponentsTestClassLoader.index(getClass().getClassLoader(),
new ClassPathResource("spring.components", getClass())));
Set<String> components = index.getCandidateTypes("org.springframework", "foo");
assertThat(components, containsInAnyOrder(
"org.springframework.context.index.Sample1",
"org.springframework.context.index.Sample2"));
}
@Test
public void loadIndexSingleMatch() {
CandidateComponentsIndex index = CandidateComponentsIndexLoader.loadIndex(
CandidateComponentsTestClassLoader.index(getClass().getClassLoader(),
new ClassPathResource("spring.components", getClass())));
Set<String> components = index.getCandidateTypes("org.springframework", "biz");
assertThat(components, containsInAnyOrder(
"org.springframework.context.index.Sample3"));
}
@Test
public void loadIndexNoMatch() {
CandidateComponentsIndex index = CandidateComponentsIndexLoader.loadIndex(
CandidateComponentsTestClassLoader.index(getClass().getClassLoader(),
new ClassPathResource("spring.components", getClass())));
Set<String> components = index.getCandidateTypes("org.springframework", "none");
assertThat(components, hasSize(0));
}
@Test
public void loadIndexNoPackage() {
CandidateComponentsIndex index = CandidateComponentsIndexLoader.loadIndex(
CandidateComponentsTestClassLoader.index(getClass().getClassLoader(),
new ClassPathResource("spring.components", getClass())));
Set<String> components = index.getCandidateTypes("com.example", "foo");
assertThat(components, hasSize(0));
}
@Test
public void loadIndexNoSpringComponentsResource() {
CandidateComponentsIndex index = CandidateComponentsIndexLoader.loadIndex(
CandidateComponentsTestClassLoader.disableIndex(getClass().getClassLoader()));
assertThat(index, is(nullValue()));
}
@Test
public void loadIndexNoEntry() throws IOException {
CandidateComponentsIndex index = CandidateComponentsIndexLoader.loadIndex(
CandidateComponentsTestClassLoader.index(getClass().getClassLoader(),
new ClassPathResource("empty-spring.components", getClass())));
assertThat(index, is(nullValue()));
}
@Test
public void loadIndexWithException() throws IOException {
final IOException cause = new IOException("test exception");
this.thrown.expect(IllegalStateException.class);
this.thrown.expectMessage("Unable to load indexes");
this.thrown.expectCause(is(cause));
CandidateComponentsIndexLoader.loadIndex(new CandidateComponentsTestClassLoader(
getClass().getClassLoader(), cause));
}
}