Added guava 18 test project
This commit is contained in:
oborkovskyi
David Morley
parent
3e39bf59c8
commit
2228486d4a
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<?xml version="1.0" encoding="UTF-8"?>
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<classpath>
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<classpathentry kind="src" output="target/classes" path="src/main/java">
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<attributes>
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<attribute name="optional" value="true"/>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="src" output="target/test-classes" path="src/test/java">
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<attributes>
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<attribute name="optional" value="true"/>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry excluding="**" kind="src" output="target/classes" path="src/main/resources">
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<attributes>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry excluding="**" kind="src" output="target/test-classes" path="src/test/resources">
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<attributes>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
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<attributes>
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<attribute name="maven.pomderived" value="true"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.8">
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<attributes>
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<attribute name="owner.project.facets" value="java"/>
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</attributes>
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</classpathentry>
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<classpathentry kind="output" path="target/classes"/>
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</classpath>
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<launchConfiguration type="org.eclipse.ant.AntBuilderLaunchConfigurationType">
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<booleanAttribute key="org.eclipse.ui.externaltools.ATTR_BUILDER_ENABLED" value="false"/>
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<stringAttribute key="org.eclipse.ui.externaltools.ATTR_DISABLED_BUILDER" value="org.eclipse.wst.jsdt.core.javascriptValidator"/>
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<mapAttribute key="org.eclipse.ui.externaltools.ATTR_TOOL_ARGUMENTS"/>
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<booleanAttribute key="org.eclipse.ui.externaltools.ATTR_TRIGGERS_CONFIGURED" value="true"/>
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</launchConfiguration>
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*.class
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#folders#
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/target
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/neoDb*
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/data
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/src/main/webapp/WEB-INF/classes
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*/META-INF/*
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# Packaged files #
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*.jar
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*.war
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*.ear
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<?xml version="1.0" encoding="UTF-8"?>
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<projectDescription>
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<name>guava</name>
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<comment></comment>
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<projects>
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</projects>
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<buildSpec>
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<buildCommand>
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<name>org.eclipse.jdt.core.javabuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>org.eclipse.wst.common.project.facet.core.builder</name>
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>org.eclipse.wst.validation.validationbuilder</name>
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<arguments>
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</arguments>
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</buildCommand>
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<buildCommand>
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<name>org.eclipse.m2e.core.maven2Builder</name>
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<arguments>
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</arguments>
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</buildCommand>
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</buildSpec>
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<natures>
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<nature>org.eclipse.jem.workbench.JavaEMFNature</nature>
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<nature>org.eclipse.wst.common.modulecore.ModuleCoreNature</nature>
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<nature>org.eclipse.jdt.core.javanature</nature>
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<nature>org.eclipse.m2e.core.maven2Nature</nature>
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<nature>org.eclipse.wst.common.project.facet.core.nature</nature>
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</natures>
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</projectDescription>
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<?xml version="1.0" encoding="UTF-8"?>
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<beansProjectDescription>
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<version>1</version>
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<pluginVersion><![CDATA[3.3.0.201307091516-RELEASE]]></pluginVersion>
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<configSuffixes>
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<configSuffix><![CDATA[xml]]></configSuffix>
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</configSuffixes>
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<enableImports><![CDATA[false]]></enableImports>
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<configs>
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<config>src/main/webapp/WEB-INF/api-servlet.xml</config>
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</configs>
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<configSets>
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</configSets>
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</beansProjectDescription>
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=========
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## Guava and Hamcrest Cookbooks and Examples
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### Relevant Articles:
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- [Guava Collections Cookbook](http://www.baeldung.com/guava-collections)
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- [Guava Ordering Cookbook](http://www.baeldung.com/guava-order)
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- [Guava Functional Cookbook](http://www.baeldung.com/guava-functions-predicates)
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- [Hamcrest Collections Cookbook](http://www.baeldung.com/hamcrest-collections-arrays)
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- [Partition a List in Java](http://www.baeldung.com/java-list-split)
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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>com.baeldung</groupId>
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<artifactId>guava</artifactId>
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<version>1.0-SNAPSHOT</version>
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<dependencies>
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<dependency>
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<groupId>com.google.guava</groupId>
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<artifactId>guava</artifactId>
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<version>18.0</version>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.3</version>
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<configuration>
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<debug>true</debug>
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<optimize>true</optimize>
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<source>1.8</source>
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<target>1.8</target>
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<encoding>UTF-8</encoding>
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<showDeprecation>true</showDeprecation>
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<showWarnings>true</showWarnings>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>
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package com.baeldung.guava.entity;
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import com.google.common.base.MoreObjects;
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public class Administrator extends User{
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public Administrator(long id, String name, int age) {
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super(id, name, age);
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}
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@Override
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public String toString() {
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return MoreObjects.toStringHelper(this)
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.add("id", getId())
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.add("name", getName())
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.add("age", getAge())
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.toString();
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}
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}
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package com.baeldung.guava.entity;
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public class Player extends User{
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public Player(long id, String name, int age) {
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super(id, name, age);
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}
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}
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package com.baeldung.guava.entity;
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import com.google.common.base.MoreObjects;
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public class User{
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private long id;
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private String name;
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private int age;
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public User(long id, String name, int age) {
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this.id = id;
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this.name = name;
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this.age = age;
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}
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public long getId() {
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return id;
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}
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public String getName() {
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return name;
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}
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public int getAge() {
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return age;
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}
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@Override
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public String toString() {
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return MoreObjects.toStringHelper(User.class)
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.add("id", id)
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.add("name", name)
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.add("age", age)
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.toString();
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}
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}
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import com.baeldung.guava.entity.Administrator;
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import com.baeldung.guava.entity.Player;
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import com.baeldung.guava.entity.User;
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import com.google.common.base.Functions;
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import com.google.common.base.Joiner;
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import com.google.common.base.Predicate;
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import com.google.common.collect.FluentIterable;
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import com.google.common.hash.HashCode;
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import com.google.common.hash.Hashing;
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import com.google.common.net.InetAddresses;
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import com.google.common.util.concurrent.ListeningExecutorService;
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import com.google.common.util.concurrent.MoreExecutors;
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import org.junit.Assert;
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import org.junit.Test;
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import java.net.InetAddress;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.concurrent.*;
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import static org.hamcrest.CoreMatchers.equalTo;
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public class GuavaTest {
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private static final int ADULT_AGE = 18;
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@Test
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public void whenToString_shouldIncludeAllFields() throws Exception {
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User user = new User(12L, "John Doe", 25);
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Assert.assertThat(user.toString(), equalTo("User{id=12, name=John Doe, age=25}"));
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}
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@Test
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public void whenPlayerToString_shouldCallParentToString() throws Exception {
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User user = new Player(12L, "John Doe", 25);
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Assert.assertThat(user.toString(), equalTo("User{id=12, name=John Doe, age=25}"));
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}
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@Test
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public void whenAdministratorToString_shouldExecuteAdministratorToString() throws Exception {
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User user = new Administrator(12L, "John Doe", 25);
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Assert.assertThat(user.toString(), equalTo("Administrator{id=12, name=John Doe, age=25}"));
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}
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@Test
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public void whenFilteringByAge_shouldFilterOnlyAdultUsers() throws Exception {
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List<User> users = new ArrayList<>();
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users.add(new User(1L, "John", 45));
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users.add(new User(2L, "Michael", 27));
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users.add(new User(3L, "Max", 16));
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users.add(new User(4L, "Bob", 10));
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users.add(new User(5L, "Bill", 65));
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Predicate<User> byAge = input -> input.getAge() > ADULT_AGE;
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List<String> results = FluentIterable.from(users)
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.filter(byAge)
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.transform(Functions.toStringFunction())
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.toList();
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Assert.assertThat(results.size(), equalTo(3));
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}
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@Test
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public void whenCreatingFluentIterableFromArray_shouldContainAllUsers() throws Exception {
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User[] usersArray = {new User(1L, "John", 45), new User(2L, "Max", 15)} ;
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FluentIterable<User> users = FluentIterable.of(usersArray);
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Assert.assertThat(users.size(), equalTo(2));
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}
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@Test
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public void whenAppendingElementsToFluentIterable_shouldContainAllUsers() throws Exception {
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User[] usersArray = {new User(1L, "John", 45), new User(2L, "Max", 15)};
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FluentIterable<User> users = FluentIterable.of(usersArray).append(
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new User(3L, "Bob", 23),
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new User(4L, "Bill", 17)
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);
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Assert.assertThat(users.size(), equalTo(4));
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}
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@Test
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public void whenAppendingListToFluentIterable_shouldContainAllUsers() throws Exception {
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User[] usersArray = {new User(1L, "John", 45), new User(2L, "Max", 15)};
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List<User> usersList = new ArrayList<>();
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usersList.add(new User(3L, "David", 32));
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FluentIterable<User> users = FluentIterable.of(usersArray).append(usersList);
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Assert.assertThat(users.size(), equalTo(3));
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}
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@Test
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public void whenJoiningFluentIterableElements_shouldOutputAllUsers() throws Exception {
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User[] usersArray = {new User(1L, "John", 45), new User(2L, "Max", 15)};
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FluentIterable<User> users = FluentIterable.of(usersArray);
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Assert.assertThat(users.join(Joiner.on("; ")),
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equalTo("User{id=1, name=John, age=45}; User{id=2, name=Max, age=15}"));
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}
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@Test
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public void whenHashingData_shouldReturnCorrectHashCode() throws Exception {
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int receivedData = 123;
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HashCode hashCode = Hashing.crc32c().hashInt(receivedData);
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Assert.assertThat(hashCode.toString(), equalTo("495be649"));
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}
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@Test
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public void whenDecrementingIpAddress_shouldReturnOneLessIpAddress() throws Exception {
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InetAddress address = InetAddress.getByName("127.0.0.5");
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InetAddress decrementedAddress = InetAddresses.decrement(address);
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Assert.assertThat(decrementedAddress.toString(), equalTo("/127.0.0.4"));
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}
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@Test
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public void whenExecutingRunnableInThread_shouldLogThreadExecution() throws Exception {
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ConcurrentHashMap<String, Boolean> threadExecutions = new ConcurrentHashMap<>();
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Runnable logThreadRun = () -> threadExecutions.put(Thread.currentThread().getName(), true);
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Thread t = new Thread(logThreadRun);
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t.run();
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Assert.assertTrue(threadExecutions.get("main"));
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}
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@Test
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public void whenExecutingRunnableInThreadPool_shouldLogAllThreadsExecutions() throws Exception {
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ConcurrentHashMap<String, Boolean> threadExecutions = new ConcurrentHashMap<>();
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Runnable logThreadRun= () -> threadExecutions.put(Thread.currentThread().getName(), true);
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ExecutorService executorService = Executors.newFixedThreadPool(2);
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executorService.submit(logThreadRun);
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executorService.submit(logThreadRun);
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executorService.shutdown();
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executorService.awaitTermination(100, TimeUnit.MILLISECONDS);
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Assert.assertTrue(threadExecutions.get("pool-1-thread-1"));
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Assert.assertTrue(threadExecutions.get("pool-1-thread-2"));
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}
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@Test
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public void whenExecutingRunnableInDirectExecutor_shouldLogThreadExecution() throws Exception {
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ConcurrentHashMap<String, Boolean> threadExecutions = new ConcurrentHashMap<>();
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Runnable logThreadRun= () -> threadExecutions.put(Thread.currentThread().getName(), true);
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Executor executor = MoreExecutors.directExecutor();
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executor.execute(logThreadRun);
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Assert.assertTrue(threadExecutions.get("main"));
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}
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@Test
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public void whenExecutingRunnableInListeningExecutor_shouldLogThreadExecution() throws Exception {
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ConcurrentHashMap<String, Boolean> threadExecutions = new ConcurrentHashMap<>();
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Runnable logThreadRun = () -> threadExecutions.put(Thread.currentThread().getName(), true);
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ListeningExecutorService executor = MoreExecutors.newDirectExecutorService();
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executor.execute(logThreadRun);
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Assert.assertTrue(threadExecutions.get("main"));
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}
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}
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