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ProducibleOperationArgumentResolverTests.java
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ProducibleOperationArgumentResolverTests.java
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/*
* Copyright 2012-2021 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
*
* https://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.actuate.endpoint;
import java.util.Arrays;
import java.util.List;
import java.util.function.Supplier;
import org.junit.jupiter.api.Test;
import org.springframework.util.MimeType;
import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.Assertions.assertThatIllegalStateException;
/**
* Test for {@link ProducibleOperationArgumentResolver}.
*
* @author Andy Wilkinson
* @author Phillip Webb
*/
class ProducibleOperationArgumentResolverTests {
private static final String V2_JSON = ApiVersion.V2.getProducedMimeType().toString();
private static final String V3_JSON = ApiVersion.V3.getProducedMimeType().toString();
@Test
void whenAcceptHeaderIsEmptyThenHighestOrdinalIsReturned() {
assertThat(resolve(acceptHeader())).isEqualTo(ApiVersion.V3);
}
@Test
void whenAcceptHeaderIsEmptyAndWithDefaultThenDefaultIsReturned() {
assertThat(resolve(acceptHeader(), WithDefault.class)).isEqualTo(WithDefault.TWO);
}
@Test
void whenEverythingIsAcceptableThenHighestOrdinalIsReturned() {
assertThat(resolve(acceptHeader("*/*"))).isEqualTo(ApiVersion.V3);
}
@Test
void whenEverythingIsAcceptableWithDefaultThenDefaultIsReturned() {
assertThat(resolve(acceptHeader("*/*"), WithDefault.class)).isEqualTo(WithDefault.TWO);
}
@Test
void whenNothingIsAcceptableThenNullIsReturned() {
assertThat(resolve(acceptHeader("image/png"))).isEqualTo(null);
}
@Test
void whenSingleValueIsAcceptableThenMatchingEnumValueIsReturned() {
assertThat(new ProducibleOperationArgumentResolver(acceptHeader(V2_JSON)).resolve(ApiVersion.class))
.isEqualTo(ApiVersion.V2);
assertThat(new ProducibleOperationArgumentResolver(acceptHeader(V3_JSON)).resolve(ApiVersion.class))
.isEqualTo(ApiVersion.V3);
}
@Test
void whenMultipleValuesAreAcceptableThenHighestOrdinalIsReturned() {
assertThat(resolve(acceptHeader(V2_JSON, V3_JSON))).isEqualTo(ApiVersion.V3);
}
@Test
void whenMultipleValuesAreAcceptableAsSingleHeaderThenHighestOrdinalIsReturned() {
assertThat(resolve(acceptHeader(V2_JSON + "," + V3_JSON))).isEqualTo(ApiVersion.V3);
}
@Test
void withMultipleValuesOneOfWhichIsAllReturnsDefault() {
assertThat(resolve(acceptHeader("one/one", "*/*"), WithDefault.class)).isEqualTo(WithDefault.TWO);
}
@Test
void whenMultipleDefaultsThrowsException() {
assertThatIllegalStateException().isThrownBy(() -> resolve(acceptHeader("one/one"), WithMultipleDefaults.class))
.withMessageContaining("Multiple default values");
}
private Supplier<List<String>> acceptHeader(String... types) {
List<String> value = Arrays.asList(types);
return () -> (value.isEmpty() ? null : value);
}
private ApiVersion resolve(Supplier<List<String>> accepts) {
return resolve(accepts, ApiVersion.class);
}
private <T> T resolve(Supplier<List<String>> accepts, Class<T> type) {
return new ProducibleOperationArgumentResolver(accepts).resolve(type);
}
enum WithDefault implements Producible<WithDefault> {
ONE("one/one"),
TWO("two/two") {
@Override
public boolean isDefault() {
return true;
}
},
THREE("three/three");
private final MimeType mimeType;
WithDefault(String mimeType) {
this.mimeType = MimeType.valueOf(mimeType);
}
@Override
public MimeType getProducedMimeType() {
return this.mimeType;
}
}
enum WithMultipleDefaults implements Producible<WithMultipleDefaults> {
ONE, TWO, THREE;
@Override
public boolean isDefault() {
return true;
}
@Override
public MimeType getProducedMimeType() {
return MimeType.valueOf("image/jpeg");
}
}
}