/*
* Copyright 2013-2014 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.hateoas.hal;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import java.util.List;
import java.util.Map;
import org.hamcrest.Matchers;
import org.junit.Before;
import org.junit.Test;
import org.springframework.hateoas.RelProvider;
import org.springframework.hateoas.core.EmbeddedWrappers;
import org.springframework.hateoas.core.EvoInflectorRelProvider;
/**
* Unit tests for {@link HalEmbeddedBuilder}.
*
* @author Oliver Gierke
* @author Dietrich Schulten
*/
public class HalEmbeddedBuilderUnitTest {
RelProvider provider;
@Before
public void setUp() {
provider = new EvoInflectorRelProvider();
}
@Test
public void rendersSingleElementsWithSingleEntityRel() {
Map<String, Object> map = setUpBuilder("foo", 1L);
assertThat(map.get("string"), is((Object) "foo"));
assertThat(map.get("long"), is((Object) 1L));
}
@Test
public void rendersMultipleElementsWithCollectionResourceRel() {
Map<String, Object> map = setUpBuilder("foo", "bar", 1L);
assertThat(map.containsKey("string"), is(false));
assertThat(map.get("long"), is((Object) 1L));
assertHasValues(map, "strings", "foo", "bar");
}
/**
* @see #110
*/
@Test
public void correctlyPilesUpResourcesInCollectionRel() {
Map<String, Object> map = setUpBuilder("foo", "bar", "foobar", 1L);
assertThat(map.containsKey("string"), is(false));
assertHasValues(map, "strings", "foo", "bar", "foobar");
assertThat(map.get("long"), is((Object) 1L));
}
/**
* @see #135
*/
@Test
public void forcesCollectionRelToBeUsedIfConfigured() {
HalEmbeddedBuilder builder = new HalEmbeddedBuilder(provider, true);
builder.add("Sample");
assertThat(builder.asMap().get("string"), is(nullValue()));
assertHasValues(builder.asMap(), "strings", "Sample");
}
/**
* @see #195
*/
@Test
public void doesNotPreferCollectionsIfRelAwareWasAdded() {
EmbeddedWrappers wrappers = new EmbeddedWrappers(false);
HalEmbeddedBuilder builder = new HalEmbeddedBuilder(provider, true);
builder.add(wrappers.wrap("MyValue", "foo"));
assertThat(builder.asMap().get("foo"), is(instanceOf(String.class)));
}
/**
* @see #195
*/
@Test(expected = IllegalArgumentException.class)
public void rejectsNullRelProvider() {
new HalEmbeddedBuilder(null, false);
}
private static void assertHasValues(Map<String, Object> source, String rel, Object... values) {
Object value = source.get(rel);
assertThat(value, is(instanceOf(List.class)));
assertThat((List<Object>) value, Matchers.<List<Object>> allOf(hasSize(values.length), hasItems(values)));
}
private Map<String, Object> setUpBuilder(Object... values) {
HalEmbeddedBuilder builder = new HalEmbeddedBuilder(provider, false);
for (Object value : values) {
builder.add(value);
}
return builder.asMap();
}
}