[BAEL-13506] - Split or move core-java-8 module (#7790)
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Josh Cummings
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7
core-java-modules/core-java-datetime/README.md
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core-java-modules/core-java-datetime/README.md
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=========
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## Core Java 8 Cookbooks and Examples
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### Relevant Articles:
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- [Set the Time Zone of a Date in Java](https://www.baeldung.com/java-set-date-time-zone)
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- [Overriding System Time for Testing in Java](https://www.baeldung.com/java-override-system-time)
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101
core-java-modules/core-java-datetime/pom.xml
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core-java-modules/core-java-datetime/pom.xml
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<project xmlns="http://maven.apache.org/POM/4.0.0" 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>core-java-datetime</artifactId>
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<version>0.1.0-SNAPSHOT</version>
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<name>core-java-datetime</name>
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<packaging>jar</packaging>
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<parent>
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<groupId>com.baeldung</groupId>
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<artifactId>parent-java</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<relativePath>../../parent-java</relativePath>
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</parent>
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<dependencies>
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<dependency>
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<groupId>org.apache.commons</groupId>
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<artifactId>commons-lang3</artifactId>
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<version>${commons-lang3.version}</version>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<version>${lombok.version}</version>
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<scope>provided</scope>
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</dependency>
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<!-- test scoped -->
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<dependency>
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<groupId>org.assertj</groupId>
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<artifactId>assertj-core</artifactId>
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<version>${assertj.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>joda-time</groupId>
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<artifactId>joda-time</artifactId>
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<version>${joda.version}</version>
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</dependency>
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<dependency>
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<groupId>org.aspectj</groupId>
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<artifactId>aspectjrt</artifactId>
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<version>${asspectj.version}</version>
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</dependency>
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<dependency>
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<groupId>org.powermock</groupId>
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<artifactId>powermock-module-junit4</artifactId>
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<version>${powermock.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.powermock</groupId>
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<artifactId>powermock-api-mockito2</artifactId>
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<version>${powermock.version}</version>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.jmockit</groupId>
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<artifactId>jmockit</artifactId>
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<version>${jmockit.version}</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<finalName>core-java-datetime</finalName>
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<resources>
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<resource>
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<directory>src/main/resources</directory>
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<filtering>true</filtering>
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</resource>
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</resources>
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<plugins>
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<plugin>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>${maven-surefire-plugin.version}</version>
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<configuration>
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<argLine>
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-javaagent:${settings.localRepository}/org/jmockit/jmockit/${jmockit.version}/jmockit-${jmockit.version}.jar
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</argLine>
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<disableXmlReport>true</disableXmlReport>
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</configuration>
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</plugin>
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</plugins>
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</build>
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<properties>
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<!-- util -->
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<commons-math3.version>3.6.1</commons-math3.version>
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<joda.version>2.10</joda.version>
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<!-- testing -->
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<assertj.version>3.6.1</assertj.version>
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<asspectj.version>1.8.9</asspectj.version>
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<powermock.version>2.0.0-RC.4</powermock.version>
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<jmockit.version>1.44</jmockit.version>
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<!-- plugins -->
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<maven-surefire-plugin.version>2.22.1</maven-surefire-plugin.version>
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</properties>
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</project>
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<?xml version="1.0" encoding="UTF-8"?>
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<configuration>
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<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
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<encoder>
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<pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
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</pattern>
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</encoder>
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</appender>
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<root level="INFO">
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<appender-ref ref="STDOUT" />
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</root>
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</configuration>
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package com.baeldung.time;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.powermock.core.classloader.annotations.PrepareForTest;
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import org.powermock.modules.junit4.PowerMockRunner;
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import java.time.Clock;
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import java.time.Instant;
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import java.time.ZoneId;
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import static org.assertj.core.api.Assertions.assertThat;
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import static org.mockito.Mockito.when;
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import static org.powermock.api.mockito.PowerMockito.mockStatic;
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@RunWith(PowerMockRunner.class)
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@PrepareForTest({ Instant.class })
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public class InstantUnitTest {
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@Test
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public void givenInstantMock_whenNow_thenGetFixedInstant() {
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String instantExpected = "2014-12-22T10:15:30Z";
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Clock clock = Clock.fixed(Instant.parse(instantExpected), ZoneId.of("UTC"));
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Instant instant = Instant.now(clock);
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mockStatic(Instant.class);
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when(Instant.now()).thenReturn(instant);
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Instant now = Instant.now();
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assertThat(now.toString()).isEqualTo(instantExpected);
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}
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@Test
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public void givenFixedClock_whenNow_thenGetFixedInstant() {
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String instantExpected = "2014-12-22T10:15:30Z";
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Clock clock = Clock.fixed(Instant.parse(instantExpected), ZoneId.of("UTC"));
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Instant instant = Instant.now(clock);
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assertThat(instant.toString()).isEqualTo(instantExpected);
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}
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}
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package com.baeldung.time;
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import mockit.Expectations;
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import mockit.Mock;
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import mockit.MockUp;
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import org.junit.jupiter.api.Test;
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import java.time.Clock;
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import java.time.Instant;
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import java.time.ZoneId;
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import static org.assertj.core.api.Assertions.assertThat;
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public class InstantWithJMockUnitTest {
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@Test
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public void givenInstantWithJMock_whenNow_thenGetFixedInstant() {
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String instantExpected = "2014-12-21T10:15:30Z";
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Clock clock = Clock.fixed(Instant.parse(instantExpected), ZoneId.of("UTC"));
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new MockUp<Instant>() {
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@Mock
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public Instant now() {
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return Instant.now(clock);
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}
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};
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Instant now = Instant.now();
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assertThat(now.toString()).isEqualTo(instantExpected);
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}
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@Test
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public void givenInstantWithExpectations_whenNow_thenGetFixedInstant() {
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Clock clock = Clock.fixed(Instant.parse("2014-12-23T10:15:30.00Z"), ZoneId.of("UTC"));
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Instant instantExpected = Instant.now(clock);
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new Expectations(Instant.class) {
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{
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Instant.now();
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result = instantExpected;
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}
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};
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Instant now = Instant.now();
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assertThat(now).isEqualTo(instantExpected);
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}
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}
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package com.baeldung.time;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.powermock.core.classloader.annotations.PrepareForTest;
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import org.powermock.modules.junit4.PowerMockRunner;
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import java.time.Clock;
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import java.time.Instant;
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import java.time.LocalDateTime;
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import java.time.ZoneId;
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import static org.assertj.core.api.Assertions.assertThat;
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import static org.mockito.Mockito.when;
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import static org.powermock.api.mockito.PowerMockito.mockStatic;
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@RunWith(PowerMockRunner.class)
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@PrepareForTest({ LocalDateTime.class })
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public class LocalDateTimeUnitTest {
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@Test
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public void givenLocalDateTimeMock_whenNow_thenGetFixedLocalDateTime() {
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Clock clock = Clock.fixed(Instant.parse("2014-12-22T10:15:30.00Z"), ZoneId.of("UTC"));
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LocalDateTime dateTime = LocalDateTime.now(clock);
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mockStatic(LocalDateTime.class);
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when(LocalDateTime.now()).thenReturn(dateTime);
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String dateTimeExpected = "2014-12-22T10:15:30";
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LocalDateTime now = LocalDateTime.now();
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assertThat(now).isEqualTo(dateTimeExpected);
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}
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@Test
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public void givenFixedClock_whenNow_thenGetFixedLocalDateTime() {
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Clock clock = Clock.fixed(Instant.parse("2014-12-22T10:15:30.00Z"), ZoneId.of("UTC"));
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String dateTimeExpected = "2014-12-22T10:15:30";
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LocalDateTime dateTime = LocalDateTime.now(clock);
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assertThat(dateTime).isEqualTo(dateTimeExpected);
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}
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}
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package com.baeldung.time;
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import mockit.Expectations;
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import mockit.Mock;
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import mockit.MockUp;
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import org.junit.jupiter.api.Test;
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import java.time.Clock;
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import java.time.Instant;
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import java.time.LocalDateTime;
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import java.time.ZoneId;
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import static org.assertj.core.api.Assertions.assertThat;
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public class LocalDateTimeWithJMockUnitTest {
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@Test
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public void givenLocalDateTimeWithJMock_whenNow_thenGetFixedLocalDateTime() {
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Clock clock = Clock.fixed(Instant.parse("2014-12-21T10:15:30.00Z"), ZoneId.of("UTC"));
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new MockUp<LocalDateTime>() {
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@Mock
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public LocalDateTime now() {
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return LocalDateTime.now(clock);
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}
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};
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String dateTimeExpected = "2014-12-21T10:15:30";
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LocalDateTime now = LocalDateTime.now();
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assertThat(now).isEqualTo(dateTimeExpected);
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}
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@Test
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public void givenLocalDateTimeWithExpectations_whenNow_thenGetFixedLocalDateTime() {
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Clock clock = Clock.fixed(Instant.parse("2014-12-23T10:15:30.00Z"), ZoneId.of("UTC"));
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LocalDateTime dateTimeExpected = LocalDateTime.now(clock);
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new Expectations(LocalDateTime.class) {
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{
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LocalDateTime.now();
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result = dateTimeExpected;
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}
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};
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LocalDateTime now = LocalDateTime.now();
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assertThat(now).isEqualTo(dateTimeExpected);
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}
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}
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13
core-java-modules/core-java-datetime/src/test/resources/.gitignore
vendored
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13
core-java-modules/core-java-datetime/src/test/resources/.gitignore
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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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