/*
* Copyright 2012-2016 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.boot.autoconfigure.template;
import java.util.Collection;
import java.util.Collections;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;
import org.springframework.context.ApplicationContext;
import org.springframework.core.io.ResourceLoader;
import org.springframework.mock.env.MockEnvironment;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.BDDMockito.given;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
/**
* Tests for {@link TemplateAvailabilityProviders}.
*
* @author Phillip Webb
*/
public class TemplateAvailabilityProvidersTests {
@Rule
public ExpectedException thrown = ExpectedException.none();
private TemplateAvailabilityProviders providers;
@Mock
private TemplateAvailabilityProvider provider;
private String view = "view";
private ClassLoader classLoader = getClass().getClassLoader();
private MockEnvironment environment = new MockEnvironment();
@Mock
private ResourceLoader resourceLoader;
@Before
public void setup() {
MockitoAnnotations.initMocks(this);
this.providers = new TemplateAvailabilityProviders(
Collections.singleton(this.provider));
}
@Test
public void createWhenApplicationContextIsNullShouldThrowException()
throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("ClassLoader must not be null");
new TemplateAvailabilityProviders((ApplicationContext) null);
}
@Test
public void createWhenUsingApplicationContextShouldLoadProviders() throws Exception {
ApplicationContext applicationContext = mock(ApplicationContext.class);
given(applicationContext.getClassLoader()).willReturn(this.classLoader);
TemplateAvailabilityProviders providers = new TemplateAvailabilityProviders(
applicationContext);
assertThat(providers.getProviders()).isNotEmpty();
verify(applicationContext).getClassLoader();
}
@Test
public void createWhenClassLoaderIsNullShouldThrowException() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("ClassLoader must not be null");
new TemplateAvailabilityProviders((ClassLoader) null);
}
@Test
public void createWhenUsingClassLoaderShouldLoadProviders() throws Exception {
TemplateAvailabilityProviders providers = new TemplateAvailabilityProviders(
this.classLoader);
assertThat(providers.getProviders()).isNotEmpty();
}
@Test
public void createWhenProvidersIsNullShouldThrowException() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Providers must not be null");
new TemplateAvailabilityProviders(
(Collection<TemplateAvailabilityProvider>) null);
}
@Test
public void createWhenUsingProvidersShouldUseProviders() throws Exception {
TemplateAvailabilityProviders providers = new TemplateAvailabilityProviders(
Collections.singleton(this.provider));
assertThat(providers.getProviders()).containsOnly(this.provider);
}
@Test
public void getProviderWhenApplicationContextIsNullShouldThrowException()
throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("ApplicationContext must not be null");
this.providers.getProvider(this.view, null);
}
@Test
public void getProviderWhenViewIsNullShouldThrowException() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("View must not be null");
this.providers.getProvider(null, this.environment, this.classLoader,
this.resourceLoader);
}
@Test
public void getProviderWhenEnvironmentIsNullShouldThrowException() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("Environment must not be null");
this.providers.getProvider(this.view, null, this.classLoader,
this.resourceLoader);
}
@Test
public void getProviderWhenClassLoaderIsNullShouldThrowException() throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("ClassLoader must not be null");
this.providers.getProvider(this.view, this.environment, null,
this.resourceLoader);
}
@Test
public void getProviderWhenResourceLoaderIsNullShouldThrowException()
throws Exception {
this.thrown.expect(IllegalArgumentException.class);
this.thrown.expectMessage("ResourceLoader must not be null");
this.providers.getProvider(this.view, this.environment, this.classLoader, null);
}
@Test
public void getProviderWhenNoneMatchShouldReturnNull() throws Exception {
TemplateAvailabilityProvider found = this.providers.getProvider(this.view,
this.environment, this.classLoader, this.resourceLoader);
assertThat(found).isNull();
verify(this.provider).isTemplateAvailable(this.view, this.environment,
this.classLoader, this.resourceLoader);
}
@Test
public void getProviderWhenMatchShouldReturnProvider() throws Exception {
given(this.provider.isTemplateAvailable(this.view, this.environment,
this.classLoader, this.resourceLoader)).willReturn(true);
TemplateAvailabilityProvider found = this.providers.getProvider(this.view,
this.environment, this.classLoader, this.resourceLoader);
assertThat(found).isSameAs(this.provider);
}
@Test
public void getProviderShouldCacheMatchResult() throws Exception {
given(this.provider.isTemplateAvailable(this.view, this.environment,
this.classLoader, this.resourceLoader)).willReturn(true);
this.providers.getProvider(this.view, this.environment, this.classLoader,
this.resourceLoader);
this.providers.getProvider(this.view, this.environment, this.classLoader,
this.resourceLoader);
verify(this.provider, times(1)).isTemplateAvailable(this.view, this.environment,
this.classLoader, this.resourceLoader);
}
@Test
public void getProviderShouldCacheNoMatchResult() throws Exception {
this.providers.getProvider(this.view, this.environment, this.classLoader,
this.resourceLoader);
this.providers.getProvider(this.view, this.environment, this.classLoader,
this.resourceLoader);
verify(this.provider, times(1)).isTemplateAvailable(this.view, this.environment,
this.classLoader, this.resourceLoader);
}
@Test
public void getProviderWhenCacheDisabledShouldNotUseCache() throws Exception {
given(this.provider.isTemplateAvailable(this.view, this.environment,
this.classLoader, this.resourceLoader)).willReturn(true);
this.environment.setProperty("spring.template.provider.cache", "false");
this.providers.getProvider(this.view, this.environment, this.classLoader,
this.resourceLoader);
this.providers.getProvider(this.view, this.environment, this.classLoader,
this.resourceLoader);
verify(this.provider, times(2)).isTemplateAvailable(this.view, this.environment,
this.classLoader, this.resourceLoader);
}
}