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Merge pull request #8969 from omerfinger/master 

BAEL-3926 - Java Map with case-insensitive keys
This commit is contained in:
Eric Martin 2020-04-12 11:07:51 -05:00 committed by GitHub
parent 6b21f217ed 7930d2c72e
commit f8d065ab17
4 changed files with 149 additions and 2 deletions
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8
java-collections-maps-3/README.md Normal file
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## Java Collections Cookbooks and Examples
This module contains articles about Map data structures in Java.
### Relevant Articles:
- More articles: [[<-- prev>]](/../java-collections-maps)
- More articles: [[<-- prev>]](/../java-collections-maps-2)

43
java-collections-maps-3/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<parent>
<groupId>com.baeldung</groupId>
<artifactId>parent-java</artifactId>
<version>0.0.1-SNAPSHOT</version>
<relativePath>../parent-java</relativePath>
</parent>
<modelVersion>4.0.0</modelVersion>
<artifactId>java-collections-maps-3</artifactId>
<version>0.1.0-SNAPSHOT</version>
<name>java-collections-maps-3</name>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.assertj</groupId>
<artifactId>assertj-core</artifactId>
<version>${assertj.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-collections4</artifactId>
<version>${commons-collections4.version}</version>
</dependency>
</dependencies>
<properties>
<commons-collections4.version>4.1</commons-collections4.version>
<assertj.version>3.6.1</assertj.version>
<spring.version>5.2.5.RELEASE</spring.version>
</properties>
</project>

94
java-collections-maps-3/src/test/java/com/baeldung/map/caseinsensitivekeys/CaseInsensitiveMapUnitTest.java Normal file
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package com.baeldung.map.caseinsensitivekeys;
import org.apache.commons.collections4.map.CaseInsensitiveMap;
import org.junit.Test;
import org.springframework.util.LinkedCaseInsensitiveMap;
import java.util.Map;
import java.util.TreeMap;
import static org.junit.Assert.*;
public class CaseInsensitiveMapUnitTest {
@Test
public void givenCaseInsensitiveTreeMap_whenTwoEntriesAdded_thenSizeIsOne(){
Map<String, Integer> treeMap = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
treeMap.put("abc", 1);
treeMap.put("ABC", 2);
assertEquals(1, treeMap.size());
}
@Test
public void givenCommonsCaseInsensitiveMap_whenTwoEntriesAdded_thenSizeIsOne(){
Map<String, Integer> commonsHashMap = new CaseInsensitiveMap<>();
commonsHashMap.put("abc", 1);
commonsHashMap.put("ABC", 2);
assertEquals(1, commonsHashMap.size());
}
@Test
public void givenLinkedCaseInsensitiveMap_whenTwoEntriesAdded_thenSizeIsOne(){
Map<String, Integer> linkedHashMap = new LinkedCaseInsensitiveMap<>();
linkedHashMap.put("abc", 1);
linkedHashMap.put("ABC", 2);
assertEquals(1, linkedHashMap.size());
}
@Test
public void givenCaseInsensitiveTreeMap_whenSameEntryAdded_thenValueUpdated(){
Map<String, Integer> treeMap = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
treeMap.put("abc", 1);
treeMap.put("ABC", 2);
assertEquals(2, treeMap.get("aBc").intValue());
assertEquals(2, treeMap.get("ABc").intValue());
}
@Test
public void givenCommonsCaseInsensitiveMap_whenSameEntryAdded_thenValueUpdated(){
Map<String, Integer> commonsHashMap = new CaseInsensitiveMap<>();
commonsHashMap.put("abc", 1);
commonsHashMap.put("ABC", 2);
assertEquals(2, commonsHashMap.get("aBc").intValue());
assertEquals(2, commonsHashMap.get("ABc").intValue());
}
@Test
public void givenLinkedCaseInsensitiveMap_whenSameEntryAdded_thenValueUpdated(){
Map<String, Integer> linkedHashMap = new LinkedCaseInsensitiveMap<>();
linkedHashMap.put("abc", 1);
linkedHashMap.put("ABC", 2);
assertEquals(2, linkedHashMap.get("aBc").intValue());
assertEquals(2, linkedHashMap.get("ABc").intValue());
}
@Test
public void givenCaseInsensitiveTreeMap_whenEntryRemoved_thenSizeIsZero(){
Map<String, Integer> treeMap = new TreeMap<>(String.CASE_INSENSITIVE_ORDER);
treeMap.put("abc", 3);
treeMap.remove("aBC");
assertEquals(0, treeMap.size());
}
@Test
public void givenCommonsCaseInsensitiveMap_whenEntryRemoved_thenSizeIsZero(){
Map<String, Integer> commonsHashMap = new CaseInsensitiveMap<>();
commonsHashMap.put("abc", 3);
commonsHashMap.remove("aBC");
assertEquals(0, commonsHashMap.size());
}
@Test
public void givenLinkedCaseInsensitiveMap_whenEntryRemoved_thenSizeIsZero(){
Map<String, Integer> linkedHashMap = new LinkedCaseInsensitiveMap<>();
linkedHashMap.put("abc", 3);
linkedHashMap.remove("aBC");
assertEquals(0, linkedHashMap.size());
}
}

6
pom.xml
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<module>java-collections-conversions</module>
<module>java-collections-conversions-2</module>
<module>java-collections-maps-3</module>
<!-- <module>java-ee-8-security-api</module> --> <!-- long running -->
<module>javafx</module>
@ -564,7 +565,7 @@
<module>rxjava-libraries</module>
<module>rxjava-observables</module>
<module>rxjava-operators</module>
<module>atomikos</module>
</modules>
@ -965,6 +966,7 @@
<module>java-collections-conversions</module>
<module>java-collections-conversions-2</module>
<module>java-collections-maps-3</module>
<!-- <module>java-ee-8-security-api</module> --> <!-- long running -->
<module>javafx</module>
@ -1075,7 +1077,7 @@
<module>rxjava-libraries</module>
<module>rxjava-observables</module>
<module>rxjava-operators</module>
<module>atomikos</module>
</modules>