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spring-core/src/test/java/org/springframework/util/MultiValueMapRelatedTests.java
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/* | ||
* Copyright 2002-2020 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. | ||
*/ | ||
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package org.springframework.util; | ||
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import org.jetbrains.annotations.NotNull; | ||
import org.junit.jupiter.api.Assertions; | ||
import org.junit.jupiter.api.Disabled; | ||
import org.junit.jupiter.params.ParameterizedTest; | ||
import org.junit.jupiter.params.provider.MethodSource; | ||
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import java.util.ArrayList; | ||
import java.util.Arrays; | ||
import java.util.Collections; | ||
import java.util.HashMap; | ||
import java.util.LinkedHashMap; | ||
import java.util.List; | ||
import java.util.Map; | ||
import java.util.stream.Stream; | ||
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import static org.assertj.core.api.Assertions.assertThat; | ||
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/** | ||
* @author Mihai Dumitrescu | ||
* @author Arjen Poutsma | ||
* @author Juergen Hoeller | ||
*/ | ||
class MultiValueMapRelatedTests { | ||
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@ParameterizedTest | ||
@MethodSource("objectsUnderTest") | ||
void add(MultiValueMap<String, String> objectUnderTest) { | ||
int startingSize = objectUnderTest.size(); | ||
objectUnderTest.add("key", "value1"); | ||
objectUnderTest.add("key", "value2"); | ||
assertThat(objectUnderTest).hasSize(startingSize + 1); | ||
assertThat(objectUnderTest.get("key")).containsExactly("value1", "value2"); | ||
} | ||
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@ParameterizedTest | ||
@MethodSource("objectsUnderTest") | ||
void addIfAbsentWhenAbsent(MultiValueMap<String, String> objectUnderTest) { | ||
objectUnderTest.addIfAbsent("key", "value1"); | ||
assertThat(objectUnderTest.get("key")).containsExactly("value1"); | ||
} | ||
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@ParameterizedTest | ||
@MethodSource("objectsUnderTest") | ||
void addIfAbsentWhenPresent(MultiValueMap<String, String> objectUnderTest) { | ||
objectUnderTest.add("key", "value1"); | ||
objectUnderTest.addIfAbsent("key", "value2"); | ||
assertThat(objectUnderTest.get("key")).containsExactly("value1"); | ||
} | ||
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@ParameterizedTest | ||
@MethodSource("objectsUnderTest") | ||
void set(MultiValueMap<String, String> objectUnderTest) { | ||
objectUnderTest.set("key", "value1"); | ||
objectUnderTest.set("key", "value2"); | ||
assertThat(objectUnderTest.get("key")).containsExactly("value2"); | ||
} | ||
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@ParameterizedTest | ||
@MethodSource("objectsUnderTest") | ||
void addAll(MultiValueMap<String, String> objectUnderTest) { | ||
int startingSize = objectUnderTest.size(); | ||
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objectUnderTest.add("key", "value1"); | ||
objectUnderTest.addAll("key", Arrays.asList("value2", "value3")); | ||
assertThat(objectUnderTest).hasSize(startingSize + 1); | ||
assertThat(objectUnderTest.get("key")).containsExactly("value1", "value2", "value3"); | ||
} | ||
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@ParameterizedTest | ||
@MethodSource("objectsUnderTest") | ||
@Disabled("to be fixed in gh-25140") | ||
void addAllWithEmptyList(MultiValueMap<String, String> objectUnderTest) { | ||
objectUnderTest.addAll("key", Collections.emptyList()); | ||
assertThat(objectUnderTest).hasSize(1); | ||
assertThat(objectUnderTest.get("key")).isEmpty(); | ||
assertThat(objectUnderTest.getFirst("key")).isNull(); | ||
} | ||
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@ParameterizedTest | ||
@MethodSource("objectsUnderTest") | ||
void getFirst(MultiValueMap<String, String> objectUnderTest) { | ||
List<String> values = new ArrayList<>(2); | ||
values.add("value1"); | ||
values.add("value2"); | ||
objectUnderTest.put("key", values); | ||
assertThat(objectUnderTest.getFirst("key")).isEqualTo("value1"); | ||
assertThat(objectUnderTest.getFirst("other")).isNull(); | ||
} | ||
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@ParameterizedTest | ||
@MethodSource("objectsUnderTest") | ||
void toSingleValueMap(MultiValueMap<String, String> objectUnderTest) { | ||
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int startingSize = objectUnderTest.size(); | ||
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List<String> values = new ArrayList<>(2); | ||
values.add("value1"); | ||
values.add("value2"); | ||
objectUnderTest.put("key", values); | ||
Map<String, String> singleValueMap = objectUnderTest.toSingleValueMap(); | ||
assertThat(singleValueMap).hasSize(startingSize + 1); | ||
assertThat(singleValueMap.get("key")).isEqualTo("value1"); | ||
} | ||
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@ParameterizedTest | ||
@MethodSource("objectsUnderTest") | ||
@Disabled("to be fixed in gh-25140") | ||
void toSingleValueMapWithEmptyList(MultiValueMap<String, String> objectUnderTest) { | ||
objectUnderTest.put("key", Collections.emptyList()); | ||
Map<String, String> singleValueMap = objectUnderTest.toSingleValueMap(); | ||
assertThat(singleValueMap).isEmpty(); | ||
assertThat(singleValueMap.get("key")).isNull(); | ||
} | ||
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@ParameterizedTest | ||
@MethodSource("objectsUnderTest") | ||
void equalsOnExistingValues(MultiValueMap<String, String> objectUnderTest) { | ||
objectUnderTest.clear(); | ||
objectUnderTest.set("key1", "value1"); | ||
assertThat(objectUnderTest).isEqualTo(objectUnderTest); | ||
} | ||
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@ParameterizedTest | ||
@MethodSource("objectsUnderTest") | ||
void equalsOnEmpty(MultiValueMap<String, String> objectUnderTest) { | ||
objectUnderTest.clear(); | ||
objectUnderTest.set("key1", "value1"); | ||
MultiValueMap<String, String> o1 = new LinkedMultiValueMap<>(); | ||
o1.set("key1", "value1"); | ||
assertThat(o1).isEqualTo(objectUnderTest); | ||
assertThat(objectUnderTest).isEqualTo(o1); | ||
Map<String, List<String>> o2 = new HashMap<>(); | ||
o2.put("key1", Collections.singletonList("value1")); | ||
assertThat(o2).isEqualTo(objectUnderTest); | ||
assertThat(objectUnderTest).isEqualTo(o2); | ||
} | ||
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@ParameterizedTest | ||
@MethodSource("objectsUnderTest") | ||
void canNotChangeAnUnmodifiableMultiValueMap(MultiValueMap<String, String> objectUnderTest) { | ||
MultiValueMap<String, String> asUnmodifiableMultiValueMap = CollectionUtils.unmodifiableMultiValueMap(objectUnderTest); | ||
Assertions.assertAll( | ||
() -> Assertions.assertThrows(UnsupportedOperationException.class, | ||
() -> asUnmodifiableMultiValueMap.add("key", "value")), | ||
() -> Assertions.assertThrows(UnsupportedOperationException.class, | ||
() -> asUnmodifiableMultiValueMap.addIfAbsent("key", "value")), | ||
() -> Assertions.assertThrows(UnsupportedOperationException.class, | ||
() -> asUnmodifiableMultiValueMap.addAll("key", exampleListOfValues())), | ||
() -> Assertions.assertThrows(UnsupportedOperationException.class, | ||
() -> asUnmodifiableMultiValueMap.addAll(exampleMultiValueMap())), | ||
() -> Assertions.assertThrows(UnsupportedOperationException.class, | ||
() -> asUnmodifiableMultiValueMap.set("key", "value")), | ||
() -> Assertions.assertThrows(UnsupportedOperationException.class, | ||
() -> asUnmodifiableMultiValueMap.setAll(exampleHashMap())), | ||
() -> Assertions.assertThrows(UnsupportedOperationException.class, | ||
() -> asUnmodifiableMultiValueMap.put("key", exampleListOfValues())), | ||
() -> Assertions.assertThrows(UnsupportedOperationException.class, | ||
() -> asUnmodifiableMultiValueMap.putIfAbsent("key", exampleListOfValues())), | ||
() -> Assertions.assertThrows(UnsupportedOperationException.class, | ||
() -> asUnmodifiableMultiValueMap.putAll(exampleMultiValueMap())), | ||
() -> Assertions.assertThrows(UnsupportedOperationException.class, | ||
() -> asUnmodifiableMultiValueMap.remove("key1")) | ||
); | ||
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} | ||
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@NotNull | ||
private List<String> exampleListOfValues() { | ||
return Arrays.asList("value1", "value2"); | ||
} | ||
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@NotNull | ||
private HashMap<String, String> exampleHashMap() { | ||
return new HashMap<String, String>() {{ | ||
put("key2", "key2.value1"); | ||
}}; | ||
} | ||
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private MultiValueMap<String, String> exampleMultiValueMap() { | ||
return new LinkedMultiValueMap<String, String>() {{ | ||
put("key1", Arrays.asList("key1.value1", "key1.value2")); | ||
}}; | ||
} | ||
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static Stream<MultiValueMap<String, String>> objectsUnderTest() { | ||
return Stream.of( | ||
new LinkedMultiValueMap<>(), | ||
new LinkedMultiValueMap<>(new HashMap<>()), | ||
new LinkedMultiValueMap<>(new LinkedHashMap<>()), | ||
new LinkedMultiValueMap<>(new HashMap<String, List<String>>(){{ | ||
put("existingkey", Arrays.asList("existingvalue1", "existingvalue2")); | ||
}}), | ||
CollectionUtils.toMultiValueMap(new HashMap<>())); | ||
} | ||
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} |