added Scalatest spec. related changes in pom
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@ -2,8 +2,8 @@
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<classpath>
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<classpathentry kind="src" output="target/classes" path="src/main/java"/>
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<classpathentry kind="src" output="target/test-classes" path="src/test/java"/>
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<classpathentry kind="src" path="src/test/scala"/>
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<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
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<classpathentry kind="con" path="org.maven.ide.eclipse.MAVEN2_CLASSPATH_CONTAINER"/>
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<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/4"/>
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<classpathentry kind="output" path="target/classes"/>
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</classpath>
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@ -1,5 +1,17 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
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<component name="FacetManager">
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<facet type="Scala" name="Scala">
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<configuration>
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<option name="takeFromSettings" value="true" />
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<option name="myScalaSdkJarPaths">
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<array>
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<option value="$MAVEN_REPOSITORY$/org/scala-lang/scala-library/2.7.7/scala-library-2.7.7.jar" />
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</array>
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</option>
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</configuration>
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</facet>
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</component>
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<component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_6" inherit-compiler-output="false">
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<output url="file://$MODULE_DIR$/target/classes" />
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<output-test url="file://$MODULE_DIR$/target/test-classes" />
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@ -7,10 +19,14 @@
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<sourceFolder url="file://$MODULE_DIR$/target/generated-sources/annotations" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
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<sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
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<sourceFolder url="file://$MODULE_DIR$/src/test/scala" isTestSource="true" />
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<excludeFolder url="file://$MODULE_DIR$/target/classes" />
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<excludeFolder url="file://$MODULE_DIR$/target/test-classes" />
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</content>
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<orderEntry type="inheritedJdk" />
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<orderEntry type="sourceFolder" forTests="false" />
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<orderEntry type="library" exported="" name="Maven: org.scala-lang:scala-library:2.7.7" level="project" />
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<orderEntry type="library" scope="TEST" name="Maven: org.scalatest:scalatest:1.0" level="project" />
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<orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.4" level="project" />
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</component>
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</module>
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75
pom.xml
75
pom.xml
@ -12,6 +12,7 @@
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<scala.version>2.7.7</scala.version>
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</properties>
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<build>
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@ -25,10 +26,80 @@
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<target>1.6</target>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.scala-tools</groupId>
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<artifactId>maven-scala-plugin</artifactId>
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<version>2.12</version>
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<executions>
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<execution>
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<goals>
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<goal>compile</goal>
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<goal>testCompile</goal>
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</goals>
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</execution>
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</executions>
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<configuration>
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<scalaVersion>${scala.version}</scalaVersion>
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<includes>
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<include>**/*.scala</include>
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</includes>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>2.5</version>
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<configuration>
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<reportFormat>plain</reportFormat>
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<includes>
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<include>**/*Spec.class</include>
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</includes>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-surefire-report-plugin</artifactId>
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<version>2.5</version>
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<executions>
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<execution>
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<phase>test</phase>
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<goals>
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<goal>report-only</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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<pluginRepositories>
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<pluginRepository>
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<id>scala-tools.org</id>
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<name>Scala-tools Maven2 Repository</name>
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<url>http://scala-tools.org/repo-releases</url>
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</pluginRepository>
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</pluginRepositories>
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<repositories>
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<repository>
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<id>scala-tools.org</id>
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<name>Scala-Tools Maven2 Repository</name>
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<url>http://scala-tools.org/repo-releases</url>
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</repository>
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</repositories>
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<dependencies>
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<dependency>
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<groupId>org.scala-lang</groupId>
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<artifactId>scala-library</artifactId>
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<version>${scala.version}</version>
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</dependency>
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<dependency>
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<groupId>org.scalatest</groupId>
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<artifactId>scalatest</artifactId>
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<version>1.0</version>
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<scope>test</scope>
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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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@ -36,5 +107,5 @@
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<scope>test</scope>
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</dependency>
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</dependencies>
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</project>
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@ -58,7 +58,7 @@ public final class Just<T> extends Maybe<T> {
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@Override
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public String toString() {
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return value.toString();
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return "Just(" + value.toString() + ")";
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}
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}
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@ -1,9 +1,9 @@
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package net.abhinavsarkar.nulllessj;
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import static net.abhinavsarkar.nulllessj.Just.just;
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import java.util.concurrent.Callable;
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import static net.abhinavsarkar.nulllessj.Just.just;
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/**
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* A container class for representing a value which 'maybe' present.
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* This is an abstract class with two concrete subclasses: {@link Just}
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@ -130,7 +130,8 @@ public abstract class Maybe<T> {
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*
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* @see Maybe#maybe
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*/
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public <V> Maybe<V> callIfSomething(final ContextualCallable<T,V> callable) {
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public <V> Maybe<V> callIfSomething(
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final ContextualCallable<? super T,V> callable) {
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if (isSomething()) {
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callable.setContext(get());
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try {
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@ -190,7 +191,8 @@ public abstract class Maybe<T> {
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*
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* @throws RuntimeException See the description.
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*/
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public void runIfSomething(final ContextualRunnable<T> runnable) {
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public void runIfSomething(
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final ContextualRunnable<? super T> runnable) {
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if (isSomething()) {
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runnable.setContext(get());
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try {
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126
src/test/scala/net/abhinavsarkar/nulllessj/NulllessjSpec.scala
Normal file
126
src/test/scala/net/abhinavsarkar/nulllessj/NulllessjSpec.scala
Normal file
@ -0,0 +1,126 @@
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package net.abhinavsarkar.nulllessj
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import org.scalatest.WordSpec
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import org.scalatest.junit.{ShouldMatchersForJUnit,JUnitRunner}
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import org.junit.runner.RunWith
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import java.util.concurrent.Callable
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import java.lang.String
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@RunWith(classOf[JUnitRunner])
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class NulllessjSpec extends WordSpec with ShouldMatchersForJUnit {
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"Nothing" should {
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"return true for isNothing " in {
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(new Nothing() isNothing) should be (true)
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}
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"return false for isSomething " in {
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(new Nothing() isSomething) should be (false)
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}
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"have same hashcode for all instances " in {
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(new Nothing() hashCode) should be (new Nothing() hashCode)
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}
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"have all instances equal " in {
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(new Nothing) should be (new Nothing)
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}
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}
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"Nothing" when {
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"getting value from it" should {
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"throw NothingException " in {
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evaluating { (new Nothing) get } should produce [NothingException]
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}
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}
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"getting value from it with default value" should {
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"return the default value " in {
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((new Nothing) getOrElse "a") should be ("a")
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}
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}
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}
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"Just" should {
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"return false for isNothing " in {
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(new Just(new {}) isNothing) should be (false)
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}
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"return true for isSomething " in {
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(new Just(new {}) isSomething) should be (true)
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}
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}
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"Just" when {
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"created with a null value" should {
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"throw NothingException " in {
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evaluating { new Just(null) } should produce [NothingException]
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}
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}
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"getting value from it" should {
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"return the wrapped value " in {
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(new Just("a") get) should be ("a")
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}
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}
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"getting value from it with default value" should {
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"return the wrapped value " in {
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(new Just("a") getOrElse "b") should be ("a")
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}
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}
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}
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val callable = new Callable[String] { def call() = "abc" }
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val runnable = new Runnable { def run { throw new RuntimeException } }
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val contextualCallable = new ContextualCallable[Object, String] {
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def call() = "abc"
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}
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val contextualRunnable = new ContextualRunnable[Object] {
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def run { throw new RuntimeException }
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}
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"Maybe" when {
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"created with a null value" should {
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"return a Nothing " in {
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Maybe.maybe(null).getClass should be (classOf[Nothing[_]])
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}
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"have 'NONE' kind " in {
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Maybe.maybe(null).kind should be (Maybe.MaybeKind.NONE)
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}
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"call the callable in 'callIfNothing' method " in {
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Maybe.maybe(null).callIfNothing(callable).get should be ("abc")
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}
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"run the runnable in 'runIfNothing' method " in {
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evaluating {
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Maybe.maybe(null).runIfNothing(runnable)} should
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produce [RuntimeException]
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}
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"not call the callable in 'callIfSomething' method " in {
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evaluating { Maybe.maybe(null)
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.callIfSomething(contextualCallable).get } should
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produce [NothingException]
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}
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"not run the runnable in 'runIfSomething' method " in {
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Maybe.maybe(null).runIfSomething(contextualRunnable)
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}
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}
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"created with a non-null value" should {
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"return a Just " in {
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Maybe.maybe(new {}).getClass should be (classOf[Just[_]])
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}
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"have 'SOME' kind " in {
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Maybe.maybe(new {}).kind should be (Maybe.MaybeKind.SOME)
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}
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"not call the callable in 'callIfNothing' method " in {
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evaluating {
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Maybe.maybe(new {}).callIfNothing(callable).get } should
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produce [NothingException]
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}
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"not run the runnable in 'runIfNothing' method " in {
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Maybe.maybe(new {}).runIfNothing(runnable)
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}
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"call the callable in 'callIfSomething' method " in {
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Maybe.maybe(new {})
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.callIfSomething(contextualCallable).get should be ("abc")
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}
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"run the runnable in 'runIfSomething' method " in {
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evaluating { Maybe.maybe(new {})
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.runIfSomething(contextualRunnable) } should
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produce [RuntimeException]
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}
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}
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}
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}
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