iSharkFly-Docs
/
java-tutorials
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Merge pull request #311 from aborkov/master 

Added guava 18 test project
This commit is contained in:
David Morley 2015-12-23 21:50:33 -06:00
parent 5c27cc680d 6c83190bdc
commit 41910d7bdf
9 changed files with 321 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
guava18/README.md Normal file
View File

@ -0,0 +1,13 @@
=========
## Guava and Hamcrest Cookbooks and Examples
### Relevant Articles:
- [Guava Collections Cookbook](http://www.baeldung.com/guava-collections)
- [Guava Ordering Cookbook](http://www.baeldung.com/guava-order)
- [Guava Functional Cookbook](http://www.baeldung.com/guava-functions-predicates)
- [Hamcrest Collections Cookbook](http://www.baeldung.com/hamcrest-collections-arrays)
- [Partition a List in Java](http://www.baeldung.com/java-list-split)

41
guava18/pom.xml Normal file
View File

@ -0,0 +1,41 @@
<?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">
<modelVersion>4.0.0</modelVersion>
<groupId>com.baeldung</groupId>
<artifactId>guava</artifactId>
<version>1.0-SNAPSHOT</version>
<dependencies>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>18.0</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<debug>true</debug>
<optimize>true</optimize>
<source>1.8</source>
<target>1.8</target>
<encoding>UTF-8</encoding>
<showDeprecation>true</showDeprecation>
<showWarnings>true</showWarnings>
</configuration>
</plugin>
</plugins>
</build>
</project>

18
guava18/src/main/java/com/baeldung/guava/entity/Administrator.java Normal file
View File

@ -0,0 +1,18 @@
package com.baeldung.guava.entity;
import com.google.common.base.MoreObjects;
public class Administrator extends User{
public Administrator(long id, String name, int age) {
super(id, name, age);
}
@Override
public String toString() {
return MoreObjects.toStringHelper(this)
.add("id", getId())
.add("name", getName())
.add("age", getAge())
.toString();
}
}

8
guava18/src/main/java/com/baeldung/guava/entity/Player.java Normal file
View File

@ -0,0 +1,8 @@
package com.baeldung.guava.entity;
public class Player extends User{
public Player(long id, String name, int age) {
super(id, name, age);
}
}

36
guava18/src/main/java/com/baeldung/guava/entity/User.java Normal file
View File

@ -0,0 +1,36 @@
package com.baeldung.guava.entity;
import com.google.common.base.MoreObjects;
public class User{
private long id;
private String name;
private int age;
public User(long id, String name, int age) {
this.id = id;
this.name = name;
this.age = age;
}
public long getId() {
return id;
}
public String getName() {
return name;
}
public int getAge() {
return age;
}
@Override
public String toString() {
return MoreObjects.toStringHelper(User.class)
.add("id", id)
.add("name", name)
.add("age", age)
.toString();
}
}

80
guava18/src/test/java/com/baeldung/guava/FluentIterableTest.java Normal file
View File

@ -0,0 +1,80 @@
package com.baeldung.guava;
import com.baeldung.guava.entity.User;
import com.google.common.base.Functions;
import com.google.common.base.Joiner;
import com.google.common.base.Predicate;
import com.google.common.collect.FluentIterable;
import org.junit.Assert;
import org.junit.Test;
import java.util.ArrayList;
import java.util.List;
import static org.hamcrest.CoreMatchers.equalTo;
public class FluentIterableTest {
private static final int ADULT_AGE = 18;
@Test
public void whenFilteringByAge_shouldFilterOnlyAdultUsers() throws Exception {
List<User> users = new ArrayList<>();
users.add(new User(1L, "John", 45));
users.add(new User(2L, "Michael", 27));
users.add(new User(3L, "Max", 16));
users.add(new User(4L, "Bob", 10));
users.add(new User(5L, "Bill", 65));
Predicate<User> byAge = input -> input.getAge() > ADULT_AGE;
List<String> results = FluentIterable.from(users)
.filter(byAge)
.transform(Functions.toStringFunction())
.toList();
Assert.assertThat(results.size(), equalTo(3));
}
@Test
public void whenCreatingFluentIterableFromArray_shouldContainAllUsers() throws Exception {
User[] usersArray = {new User(1L, "John", 45), new User(2L, "Max", 15)};
FluentIterable<User> users = FluentIterable.of(usersArray);
Assert.assertThat(users.size(), equalTo(2));
}
@Test
public void whenAppendingElementsToFluentIterable_shouldContainAllUsers() throws Exception {
User[] usersArray = {new User(1L, "John", 45), new User(2L, "Max", 15)};
FluentIterable<User> users = FluentIterable.of(usersArray).append(
new User(3L, "Bob", 23),
new User(4L, "Bill", 17)
);
Assert.assertThat(users.size(), equalTo(4));
}
@Test
public void whenAppendingListToFluentIterable_shouldContainAllUsers() throws Exception {
User[] usersArray = {new User(1L, "John", 45), new User(2L, "Max", 15)};
List<User> usersList = new ArrayList<>();
usersList.add(new User(3L, "David", 32));
FluentIterable<User> users = FluentIterable.of(usersArray).append(usersList);
Assert.assertThat(users.size(), equalTo(3));
}
@Test
public void whenJoiningFluentIterableElements_shouldOutputAllUsers() throws Exception {
User[] usersArray = {new User(1L, "John", 45), new User(2L, "Max", 15)};
FluentIterable<User> users = FluentIterable.of(usersArray);
Assert.assertThat(users.join(Joiner.on("; ")),
equalTo("User{id=1, name=John, age=45}; User{id=2, name=Max, age=15}"));
}
}

41
guava18/src/test/java/com/baeldung/guava/GuavaMiscUtilsTest.java Normal file
View File

@ -0,0 +1,41 @@
package com.baeldung.guava;
import com.google.common.hash.HashCode;
import com.google.common.hash.Hashing;
import com.google.common.net.InetAddresses;
import org.junit.Assert;
import org.junit.Test;
import java.net.InetAddress;
import java.util.concurrent.ConcurrentHashMap;
import static org.hamcrest.CoreMatchers.equalTo;
public class GuavaMiscUtilsTest {
@Test
public void whenHashingData_shouldReturnCorrectHashCode() throws Exception {
int receivedData = 123;
HashCode hashCode = Hashing.crc32c().hashInt(receivedData);
Assert.assertThat(hashCode.toString(), equalTo("495be649"));
}
@Test
public void whenDecrementingIpAddress_shouldReturnOneLessIpAddress() throws Exception {
InetAddress address = InetAddress.getByName("127.0.0.5");
InetAddress decrementedAddress = InetAddresses.decrement(address);
Assert.assertThat(decrementedAddress.toString(), equalTo("/127.0.0.4"));
}
@Test
public void whenExecutingRunnableInThread_shouldLogThreadExecution() throws Exception {
ConcurrentHashMap<String, Boolean> threadExecutions = new ConcurrentHashMap<>();
Runnable logThreadRun = () -> threadExecutions.put(Thread.currentThread().getName(), true);
Thread t = new Thread(logThreadRun);
t.run();
Assert.assertTrue(threadExecutions.get("main"));
}
}

51
guava18/src/test/java/com/baeldung/guava/MoreExecutorsTest.java Normal file
View File

@ -0,0 +1,51 @@
package com.baeldung.guava;
import com.google.common.util.concurrent.ListeningExecutorService;
import com.google.common.util.concurrent.MoreExecutors;
import org.junit.Assert;
import org.junit.Test;
import java.util.concurrent.*;
public class MoreExecutorsTest {
@Test
public void whenExecutingRunnableInThreadPool_shouldLogAllThreadsExecutions() throws Exception {
ConcurrentHashMap<String, Boolean> threadExecutions = new ConcurrentHashMap<>();
Runnable logThreadRun = () -> threadExecutions.put(Thread.currentThread().getName(), true);
ExecutorService executorService = Executors.newFixedThreadPool(2);
executorService.submit(logThreadRun);
executorService.submit(logThreadRun);
executorService.shutdown();
executorService.awaitTermination(100, TimeUnit.MILLISECONDS);
Assert.assertTrue(threadExecutions.get("pool-1-thread-1"));
Assert.assertTrue(threadExecutions.get("pool-1-thread-2"));
}
@Test
public void whenExecutingRunnableInDirectExecutor_shouldLogThreadExecution() throws Exception {
ConcurrentHashMap<String, Boolean> threadExecutions = new ConcurrentHashMap<>();
Runnable logThreadRun = () -> threadExecutions.put(Thread.currentThread().getName(), true);
Executor executor = MoreExecutors.directExecutor();
executor.execute(logThreadRun);
Assert.assertTrue(threadExecutions.get("main"));
}
@Test
public void whenExecutingRunnableInListeningExecutor_shouldLogThreadExecution() throws Exception {
ConcurrentHashMap<String, Boolean> threadExecutions = new ConcurrentHashMap<>();
Runnable logThreadRun = () -> threadExecutions.put(Thread.currentThread().getName(), true);
ListeningExecutorService executor = MoreExecutors.newDirectExecutorService();
executor.execute(logThreadRun);
Assert.assertTrue(threadExecutions.get("main"));
}
}

33
guava18/src/test/java/com/baeldung/guava/MoreObjectsTest.java Normal file
View File

@ -0,0 +1,33 @@
package com.baeldung.guava;
import com.baeldung.guava.entity.Administrator;
import com.baeldung.guava.entity.Player;
import com.baeldung.guava.entity.User;
import org.junit.Assert;
import org.junit.Test;
import static org.hamcrest.CoreMatchers.equalTo;
public class MoreObjectsTest {
@Test
public void whenToString_shouldIncludeAllFields() throws Exception {
User user = new User(12L, "John Doe", 25);
Assert.assertThat(user.toString(), equalTo("User{id=12, name=John Doe, age=25}"));
}
@Test
public void whenPlayerToString_shouldCallParentToString() throws Exception {
User user = new Player(12L, "John Doe", 25);
Assert.assertThat(user.toString(), equalTo("User{id=12, name=John Doe, age=25}"));
}
@Test
public void whenAdministratorToString_shouldExecuteAdministratorToString() throws Exception {
User user = new Administrator(12L, "John Doe", 25);
Assert.assertThat(user.toString(), equalTo("Administrator{id=12, name=John Doe, age=25}"));
}
}