com.github.mjeanroy.springmvc.view.mustache.core.CompositeResourceLoaderTest.java Source code

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/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2014 <mickael.jeanroy@gmail.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package com.github.mjeanroy.springmvc.view.mustache.core;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.mockito.Mock;
import org.mockito.runners.MockitoJUnitRunner;
import org.springframework.core.io.Resource;
import org.springframework.core.io.ResourceLoader;

import java.util.Collection;

import static java.util.Arrays.asList;
import static org.apache.commons.lang3.reflect.FieldUtils.readField;
import static org.assertj.core.api.Assertions.assertThat;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.never;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;

@RunWith(MockitoJUnitRunner.class)
public class CompositeResourceLoaderTest {

    @Mock
    private ResourceLoader resourceLoader1;

    @Mock
    private ResourceLoader resourceLoader2;

    private CompositeResourceLoader compositeResourceLoader;

    @Before
    public void setUp() {
        Collection<ResourceLoader> collection = asList(resourceLoader1, resourceLoader2);
        compositeResourceLoader = new CompositeResourceLoader(collection);
    }

    @Test
    public void it_should_create_resource_loader_from_collection() throws Exception {
        Collection<ResourceLoader> collection = asList(resourceLoader1, resourceLoader2);
        CompositeResourceLoader compositeResourceLoader = new CompositeResourceLoader(collection);

        Collection<ResourceLoader> resourceLoaders = (Collection<ResourceLoader>) readField(compositeResourceLoader,
                "resourceLoaders", true);

        assertThat(resourceLoaders).isNotNull().isNotEmpty().isNotSameAs(collection).hasSize(2)
                .containsOnly(resourceLoader1, resourceLoader2);
    }

    @Test
    public void it_should_find_first_resource() throws Exception {
        Resource r1 = newResource(true);
        Resource r2 = newResource(false);

        String location = "foo";
        when(resourceLoader1.getResource(location)).thenReturn(r1);
        when(resourceLoader2.getResource(location)).thenReturn(r2);

        Resource resource = compositeResourceLoader.getResource(location);

        assertThat(resource).isNotNull().isSameAs(r1);
        verify(resourceLoader1).getResource(location);
        verify(resourceLoader2, never()).getResource(location);
    }

    @Test
    public void it_should_find_second_resource() throws Exception {
        Resource r1 = newResource(false);
        Resource r2 = newResource(true);

        String location = "foo";
        when(resourceLoader1.getResource(location)).thenReturn(r1);
        when(resourceLoader2.getResource(location)).thenReturn(r2);

        Resource resource = compositeResourceLoader.getResource(location);

        assertThat(resource).isNotNull().isSameAs(r2);
        verify(resourceLoader1).getResource(location);
        verify(resourceLoader2).getResource(location);
    }

    @Test
    public void it_should_not_find_resource() throws Exception {
        Resource r1 = newResource(false);
        Resource r2 = newResource(false);

        String location = "foo";
        when(resourceLoader1.getResource(location)).thenReturn(r1);
        when(resourceLoader2.getResource(location)).thenReturn(r2);

        Resource resource = compositeResourceLoader.getResource(location);

        assertThat(resource).isNotNull().isSameAs(r2);
        verify(resourceLoader1).getResource(location);
        verify(resourceLoader2).getResource(location);
    }

    private Resource newResource(boolean exists) {
        Resource resource = mock(Resource.class);
        when(resource.exists()).thenReturn(exists);
        return resource;
    }
}