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Merge pull request #25160 from midumitrescu 

* pr/25160:
  Polish "Add additional tests for MultiValueMap"
  Add additional tests for MultiValueMap

Closes gh-25160
This commit is contained in:
Stephane Nicoll 2023-08-25 11:50:10 +02:00
parent 2a37284c86 352c7cd8b3
commit 9b3f4567ee
2 changed files with 225 additions and 0 deletions
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27
spring-core/src/test/java/org/springframework/util/CollectionUtilsTests.java
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@ -17,6 +17,7 @@
package org.springframework.util;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.HashSet;
@ -34,6 +35,8 @@ import org.springframework.lang.Nullable;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Tests for {@link CollectionUtils}.
*
* @author Rob Harrop
* @author Juergen Hoeller
* @author Rick Evans
@ -211,6 +214,30 @@ class CollectionUtilsTests {
assertThat(CollectionUtils.hasUniqueObject(list)).isFalse();
}
@Test
void conversionOfEmptyMap() {
MultiValueMap<String, String> asMultiValueMap = CollectionUtils.toMultiValueMap(new HashMap<>());
assertThat(asMultiValueMap.isEmpty()).isTrue();
assertThat(asMultiValueMap).isEmpty();
}
@Test
void conversionOfNonEmptyMap() {
Map<String, List<String>> wrapped = new HashMap<>();
wrapped.put("key", Arrays.asList("first", "second"));
MultiValueMap<String, String> asMultiValueMap = CollectionUtils.toMultiValueMap(wrapped);
assertThat(asMultiValueMap).containsAllEntriesOf(wrapped);
}
@Test
void changesValueByReference() {
Map<String, List<String>> wrapped = new HashMap<>();
MultiValueMap<String, String> asMultiValueMap = CollectionUtils.toMultiValueMap(wrapped);
assertThat(asMultiValueMap).doesNotContainKeys("key");
wrapped.put("key", new ArrayList<>());
assertThat(asMultiValueMap).containsKey("key");
}
private static final class Instance {

198
spring-core/src/test/java/org/springframework/util/MultiValueMapTests.java Normal file
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@ -0,0 +1,198 @@
/*
* Copyright 2002-2023 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.util;
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;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;
import static org.assertj.core.api.Assertions.assertThat;
/**
* Tests for {@link MultiValueMap}.
*
* @author Mihai Dumitrescu
* @author Arjen Poutsma
* @author Juergen Hoeller
* @author Stephane Nicoll
*/
class MultiValueMapTests {
@ParameterizedTest
@MethodSource("objectsUnderTest")
void add(MultiValueMap<String, String> map) {
int initialSize = map.size();
map.add("key", "value1");
map.add("key", "value2");
assertThat(map).hasSize(initialSize + 1);
assertThat(map.get("key")).containsExactly("value1", "value2");
}
@ParameterizedTest
@MethodSource("objectsUnderTest")
void addIfAbsentWhenAbsent(MultiValueMap<String, String> map) {
map.addIfAbsent("key", "value1");
assertThat(map.get("key")).containsExactly("value1");
}
@ParameterizedTest
@MethodSource("objectsUnderTest")
void addIfAbsentWhenPresent(MultiValueMap<String, String> map) {
map.add("key", "value1");
map.addIfAbsent("key", "value2");
assertThat(map.get("key")).containsExactly("value1");
}
@ParameterizedTest
@MethodSource("objectsUnderTest")
void set(MultiValueMap<String, String> map) {
map.set("key", "value1");
map.set("key", "value2");
assertThat(map.get("key")).containsExactly("value2");
}
@ParameterizedTest
@MethodSource("objectsUnderTest")
void addAll(MultiValueMap<String, String> map) {
int initialSize = map.size();
map.add("key", "value1");
map.addAll("key", Arrays.asList("value2", "value3"));
assertThat(map).hasSize(initialSize + 1);
assertThat(map.get("key")).containsExactly("value1", "value2", "value3");
}
@ParameterizedTest
@MethodSource("objectsUnderTest")
void addAllWithEmptyList(MultiValueMap<String, String> map) {
int initialSize = map.size();
map.addAll("key", Collections.emptyList());
assertThat(map).hasSize(initialSize + 1);
assertThat(map.get("key")).isEmpty();
assertThat(map.getFirst("key")).isNull();
}
@ParameterizedTest
@MethodSource("objectsUnderTest")
void getFirst(MultiValueMap<String, String> map) {
List<String> values = List.of("value1", "value2");
map.put("key", values);
assertThat(map.getFirst("key")).isEqualTo("value1");
assertThat(map.getFirst("other")).isNull();
}
@ParameterizedTest
@MethodSource("objectsUnderTest")
void toSingleValueMap(MultiValueMap<String, String> map) {
int initialSize = map.size();
List<String> values = List.of("value1", "value2");
map.put("key", values);
Map<String, String> singleValueMap = map.toSingleValueMap();
assertThat(singleValueMap).hasSize(initialSize + 1);
assertThat(singleValueMap.get("key")).isEqualTo("value1");
}
@ParameterizedTest
@MethodSource("objectsUnderTest")
void toSingleValueMapWithEmptyList(MultiValueMap<String, String> map) {
int initialSize = map.size();
map.put("key", Collections.emptyList());
Map<String, String> singleValueMap = map.toSingleValueMap();
assertThat(singleValueMap).hasSize(initialSize);
assertThat(singleValueMap.get("key")).isNull();
}
@ParameterizedTest
@MethodSource("objectsUnderTest")
void equalsOnExistingValues(MultiValueMap<String, String> map) {
map.clear();
map.set("key1", "value1");
assertThat(map).isEqualTo(map);
}
@ParameterizedTest
@MethodSource("objectsUnderTest")
void equalsOnEmpty(MultiValueMap<String, String> map) {
map.clear();
map.set("key1", "value1");
MultiValueMap<String, String> o1 = new LinkedMultiValueMap<>();
o1.set("key1", "value1");
assertThat(o1).isEqualTo(map);
assertThat(map).isEqualTo(o1);
Map<String, List<String>> o2 = new HashMap<>();
o2.put("key1", Collections.singletonList("value1"));
assertThat(o2).isEqualTo(map);
assertThat(map).isEqualTo(o2);
}
@ParameterizedTest
@MethodSource("objectsUnderTest")
void canNotChangeAnUnmodifiableMultiValueMap(MultiValueMap<String, String> map) {
MultiValueMap<String, String> asUnmodifiableMultiValueMap = CollectionUtils.unmodifiableMultiValueMap(map);
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")));
}
private List<String> exampleListOfValues() {
return List.of("value1", "value2");
}
private Map<String, String> exampleHashMap() {
return Map.of("key2", "key2.value1");
}
private MultiValueMap<String, String> exampleMultiValueMap() {
LinkedMultiValueMap<String, String> map = new LinkedMultiValueMap<>();
map.put("key1", Arrays.asList("key1.value1", "key1.value2"));
return map;
}
static Stream<MultiValueMap<String, String>> objectsUnderTest() {
return Stream.of(new LinkedMultiValueMap<>(), new LinkedMultiValueMap<>(new HashMap<>()),
new LinkedMultiValueMap<>(new LinkedHashMap<>()),
new LinkedMultiValueMap<>(Map.of("existingkey", Arrays.asList("existingvalue1", "existingvalue2"))),
CollectionUtils.toMultiValueMap(new HashMap<>()));
}
}