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BAEL-587 Guide to Bimap (#995) 

* BAL-36 File size api in java and apache commons IO

* BAEL-282 grep in java - fixes after code review

* BAEL-519 Added support for disruptor library

* BAEL-519 Added support for disruptor library

* BAEL-519 Added support for disruptor library

* BAEL-519 Added support for disruptor library

* BAEL-519 Added support for disruptor library

* BAEL-519 Added support for disruptor library

* BAEL-519 Added support for disruptor

* BAEL-519 Moved all supporting classes to main source

* BAEL-519 Moved all supporting classes to main source

* BAEL-519 Moved asserts and test classes in test folder.

* BAEL-519 moved test related producer and consumer to src.

* BAEL-587 Initial commit for BiMap support.

* BAEL-587 Added new tests

* BAEL-587 Added new tests.

* BAEL-519 Removed Disruptor link from readme file.

* BAEL-587 Reverted Disruptor changes

* BAEL-587 reverted changes
This commit is contained in:
Muhammed Almas 2017-01-16 02:15:46 +05:30 committed by Zeger Hendrikse
parent 666803cf60
commit d5acd709e1
2 changed files with 123 additions and 1 deletions
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2
core-java/pom.xml
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@ -358,7 +358,7 @@
<logback.version>1.1.7</logback.version>
<!-- util -->
<guava.version>19.0</guava.version>
<guava.version>21.0</guava.version>
<commons-lang3.version>3.5</commons-lang3.version>
<bouncycastle.version>1.55</bouncycastle.version>
<commons-codec.version>1.10</commons-codec.version>

122
core-java/src/test/java/com/baeldung/guava/GuavaBiMapTest.java Normal file
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@ -0,0 +1,122 @@
package com.baeldung.guava;
import static org.junit.Assert.*;
import java.util.HashMap;
import java.util.Map;
import org.junit.Test;
import com.google.common.collect.BiMap;
import com.google.common.collect.EnumHashBiMap;
import com.google.common.collect.HashBiMap;
import com.google.common.collect.ImmutableBiMap;
public class GuavaBiMapTest {
@Test
public void whenQueryByValue_shouldReturnKey() {
final BiMap<String, String> personCountryHeadBiMap = HashBiMap.create();
personCountryHeadBiMap.put("Modi", "India");
personCountryHeadBiMap.put("Obama", "USA");
personCountryHeadBiMap.put("Putin", "USSR");
final String countryHeadName = personCountryHeadBiMap.inverse().get("India");
assertEquals("Modi", countryHeadName);
}
@Test
public void whenCreateBiMapFromExistingMap_shouldReturnKey() {
final Map<String, String> personCountryHeadMap = new HashMap<>();
personCountryHeadMap.put("Modi", "India");
personCountryHeadMap.put("Obama", "USA");
personCountryHeadMap.put("Putin", "USSR");
final BiMap<String, String> personCountryHeadBiMap = HashBiMap.create(personCountryHeadMap);
final String countryHeadName = personCountryHeadBiMap.inverse().get("India");
assertEquals("Modi", countryHeadName);
}
@Test
public void whenQueryByKey_shouldReturnValue() {
final BiMap<String, String> personCountryHeadBiMap = HashBiMap.create();
personCountryHeadBiMap.put("Modi", "India");
personCountryHeadBiMap.put("Obama", "USA");
personCountryHeadBiMap.put("Putin", "USSR");
assertEquals("USA", personCountryHeadBiMap.get("Obama"));
}
@Test(expected = IllegalArgumentException.class)
public void whenSameValueIsBeingPresent_shouldThrowException() {
final BiMap<String, String> personCountryHeadBiMap = HashBiMap.create();
personCountryHeadBiMap.put("Modi", "India");
personCountryHeadBiMap.put("Obama", "USA");
personCountryHeadBiMap.put("Putin", "USSR");
personCountryHeadBiMap.put("Trump", "USA");
}
@Test
public void givenSameValueIsBeingPresent_whenForcePutIsUsed_shouldCompleteSuccessfully() {
final BiMap<String, String> personCountryHeadBiMap = HashBiMap.create();
personCountryHeadBiMap.put("Modi", "India");
personCountryHeadBiMap.put("Obama", "USA");
personCountryHeadBiMap.put("Putin", "USSR");
personCountryHeadBiMap.forcePut("Trump", "USA");
assertEquals("USA", personCountryHeadBiMap.get("Trump"));
assertEquals("Trump", personCountryHeadBiMap.inverse().get("USA"));
}
@Test
public void whenSameKeyIsBeingPresent_shouldReplaceAlreadyPresent() {
final BiMap<String, String> personCountryHeadBiMap = HashBiMap.create();
personCountryHeadBiMap.put("Modi", "India");
personCountryHeadBiMap.put("Obama", "USA");
personCountryHeadBiMap.put("Putin", "USSR");
personCountryHeadBiMap.put("Obama", "HongKong");
assertEquals("HongKong", personCountryHeadBiMap.get("Obama"));
}
@Test
public void whenUsingImmutableBiMap_shouldAllowPutSuccessfully() {
final BiMap<String, String> personCountryHeadBiMap = new ImmutableBiMap.Builder<String, String>().put("Modi", "India").put("Obama", "USA").put("Putin", "USSR").build();
assertEquals("USA", personCountryHeadBiMap.get("Obama"));
}
@Test(expected = UnsupportedOperationException.class)
public void whenUsingImmutableBiMap_shouldNotAllowRemove() {
final BiMap<String, String> personCountryHeadBiMap = new ImmutableBiMap.Builder<String, String>().put("Modi", "India").put("Obama", "USA").put("Putin", "USSR").build();
personCountryHeadBiMap.remove("Modi");
}
@Test(expected = UnsupportedOperationException.class)
public void whenUsingImmutableBiMap_shouldNotAllowPut() {
final BiMap<String, String> personCountryHeadBiMap = new ImmutableBiMap.Builder<String, String>().put("Modi", "India").put("Obama", "USA").put("Putin", "USSR").build();
personCountryHeadBiMap.put("Trump", "USA");
}
private enum Operation {
ADD, SUBTRACT, MULTIPLY, DIVIDE
}
@Test
public void whenUsingEnumAsKeyInMap_shouldReplaceAlreadyPresent() {
final BiMap<Operation, String> operationStringBiMap = EnumHashBiMap.create(Operation.class);
operationStringBiMap.put(Operation.ADD, "Add");
operationStringBiMap.put(Operation.SUBTRACT, "Subtract");
operationStringBiMap.put(Operation.MULTIPLY, "Multiply");
operationStringBiMap.put(Operation.DIVIDE, "Divide");
assertEquals("Divide", operationStringBiMap.get(Operation.DIVIDE));
}
}