Removed JUnit test. Added Scalatest spec.

.classpath

@@ -2,6 +2,7 @@
 <classpath>
 	<classpathentry kind="src" output="target/classes" path="src/main/java"/>
 	<classpathentry kind="src" output="target/test-classes" path="src/test/java"/>
+	<classpathentry kind="src" path="src/test/scala"/>
 	<classpathentry kind="con" path="org.maven.ide.eclipse.MAVEN2_CLASSPATH_CONTAINER"/>
 	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry kind="output" path="target/classes"/>

.project

@@ -6,17 +6,18 @@
 	</projects>
 	<buildSpec>
 		<buildCommand>
-			<name>org.eclipse.jdt.core.javabuilder</name>
+			<name>org.maven.ide.eclipse.maven2Builder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 		<buildCommand>
-			<name>org.maven.ide.eclipse.maven2Builder</name>
+			<name>ch.epfl.lamp.sdt.core.scalabuilder</name>
 			<arguments>
 			</arguments>
 		</buildCommand>
 	</buildSpec>
 	<natures>
+		<nature>ch.epfl.lamp.sdt.core.scalanature</nature>
 		<nature>org.eclipse.jdt.core.javanature</nature>
 		<nature>org.maven.ide.eclipse.maven2Nature</nature>
 	</natures>

SpelHelper.iml

@@ -1,16 +1,35 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module org.jetbrains.idea.maven.project.MavenProjectsManager.isMavenModule="true" type="JAVA_MODULE" version="4">
-  <component name="NewModuleRootManager" inherit-compiler-output="false">
+  <component name="FacetManager">
+    <facet type="Scala" name="Scala">
+      <configuration>
+        <option name="takeFromSettings" value="true" />
+        <option name="myScalaSdkJarPaths">
+          <array>
+            <option value="$MAVEN_REPOSITORY$/org/scala-lang/scala-library/2.7.7/scala-library-2.7.7.jar" />
+          </array>
+        </option>
+      </configuration>
+    </facet>
+  </component>
+  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_6" inherit-compiler-output="false">
     <output url="file://$MODULE_DIR$/target/classes" />
     <output-test url="file://$MODULE_DIR$/target/test-classes" />
     <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/target/generated-sources/annotations" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/src/main/java" isTestSource="false" />
       <sourceFolder url="file://$MODULE_DIR$/src/test/java" isTestSource="true" />
-      <excludeFolder url="file://$MODULE_DIR$/target" />
+      <sourceFolder url="file://$MODULE_DIR$/src/test/scala" isTestSource="true" />
+      <excludeFolder url="file://$MODULE_DIR$/target/classes" />
+      <excludeFolder url="file://$MODULE_DIR$/target/surefire-reports" />
+      <excludeFolder url="file://$MODULE_DIR$/target/test-classes" />
     </content>
     <orderEntry type="inheritedJdk" />
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" scope="TEST" name="Maven: junit:junit:3.8.1" level="project" />
+    <orderEntry type="library" exported="" name="Maven: org.scala-lang:scala-library:2.7.7" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: org.scalatest:scalatest:1.0" level="project" />
+    <orderEntry type="library" scope="TEST" name="Maven: junit:junit:4.4" level="project" />
     <orderEntry type="library" exported="" name="Maven: org.springframework:spring-core:3.0.2.RELEASE" level="project" />
     <orderEntry type="library" exported="" name="Maven: org.springframework:spring-asm:3.0.2.RELEASE" level="project" />
     <orderEntry type="library" exported="" name="Maven: commons-logging:commons-logging:1.1.1" level="project" />

pom.xml

@@ -13,6 +13,7 @@
 
  <properties>
   <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  <scala.version>2.7.7</scala.version>
  </properties>
 
  <issueManagement>
@@ -41,7 +42,7 @@
     <executions>
      <execution>
       <id>javadoc</id>
-      <phase>process-sources</phase>
+      <phase>install</phase>
       <goals>
        <goal>javadoc</goal>
       </goals>
@@ -70,7 +71,38 @@
      <target>1.6</target>
     </configuration>
    </plugin>
+   <plugin>
+    <groupId>org.scala-tools</groupId>
+    <artifactId>maven-scala-plugin</artifactId>
+    <version>2.12</version>
+    <executions>
+     <execution>
+      <goals>
+       <goal>compile</goal>
+       <goal>testCompile</goal>
+      </goals>
+     </execution>
+    </executions>
+    <configuration>
+     <scalaVersion>${scala.version}</scalaVersion>
+     <includes>
+      <include>**/*.scala</include>
+     </includes>
+    </configuration>
+   </plugin>
+   <plugin>
+    <groupId>org.apache.maven.plugins</groupId>
+    <artifactId>maven-surefire-plugin</artifactId>
+    <version>2.5</version>
+    <configuration>
+     <reportFormat>plain</reportFormat>
+     <includes>
+      <include>**/*Spec.class</include>
+     </includes>
+    </configuration>
+   </plugin>
   </plugins>
+
   <resources>
    <resource>
     <filtering>true</filtering>
@@ -82,7 +114,34 @@
   </resources>
  </build>
 
+ <pluginRepositories>
+  <pluginRepository>
+   <id>scala-tools.org</id>
+   <name>Scala-tools Maven2 Repository</name>
+   <url>http://scala-tools.org/repo-releases</url>
+  </pluginRepository>
+ </pluginRepositories>
+
+ <repositories>
+  <repository>
+   <id>scala-tools.org</id>
+   <name>Scala-Tools Maven2 Repository</name>
+   <url>http://scala-tools.org/repo-releases</url>
+  </repository>
+ </repositories>
+
  <dependencies>
+  <dependency>
+   <groupId>org.scala-lang</groupId>
+   <artifactId>scala-library</artifactId>
+   <version>${scala.version}</version>
+  </dependency>
+  <dependency>
+   <groupId>org.scalatest</groupId>
+   <artifactId>scalatest</artifactId>
+   <version>1.0</version>
+   <scope>test</scope>
+  </dependency>
   <dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
@@ -100,4 +159,5 @@
    <version>3.0.2.RELEASE</version>
   </dependency>
  </dependencies>
+
 </project>

src/main/java/net/abhinavsarkar/spelhelper/ImplicitMethodResolver.java

@@ -87,7 +87,9 @@ final class ImplicitMethodResolver implements MethodResolver {
                                     newArgumentTypes);
                     MethodExecutor wrappedExecutor = executor == null ? null
                             : new ImplicitMethodExecutor(executor);
-                    CACHE.putIfAbsent(cacheKey, wrappedExecutor);
+                    if(wrappedExecutor == null) {
+                        CACHE.putIfAbsent(cacheKey, NULL_ME);
+                    }
                     return wrappedExecutor;
                 }
             }

src/test/java/net/abhinavsarkar/spelhelper/Functions.java

@@ -0,0 +1,13 @@
+package net.abhinavsarkar.spelhelper;
+
+public final class Functions {
+
+    public static String test(String str) {
+        return str;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        return o instanceof Functions;
+    }
+}

src/test/java/net/abhinavsarkar/spelhelper/SpelHelperTest.java

@@ -1,43 +0,0 @@
-package net.abhinavsarkar.spelhelper;
-
-import java.util.Arrays;
-import java.util.List;
-
-import org.junit.Assert;
-import org.junit.Test;
-
-public class SpelHelperTest {
-
-    @Test
-    public void testRegisteredFunction() {
-        Assert.assertEquals(
-                Arrays.asList("abhinav", "mini", "dan"),
-                new SpelHelper().evalExpression(
-                        "#list('abhinav','mini','dan')", new Object(), List.class));
-    }
-
-    @Test
-    public void testImplicitMethod() {
-        Assert.assertEquals(
-                Arrays.asList("abhinav", "dan", "mini"),
-                new SpelHelper().evalExpression(
-                        "#list('abhinav','mini','dan').sorted", new Object(), List.class));
-    }
-
-    public static final class ConstructorTest {
-        @Override
-        public boolean equals(final Object o) {
-            return o instanceof ConstructorTest;
-        }
-    }
-
-    @Test
-    public void testImplicitConstructor() {
-        Assert.assertEquals(
-            new ConstructorTest(),
-            new SpelHelper()
-                .registerConstructorsFromClass(ConstructorTest.class)
-                .evalExpression("new ConstructorTest()", new Object(), ConstructorTest.class));
-    }
-
-}

src/test/scala/net/abhinavsarkar/spelhelper/SpelHelperSpec.scala

@@ -0,0 +1,54 @@
+package net.abhinavsarkar.spelhelper
+
+import org.scalatest.junit.JUnitRunner
+import org.junit.runner.RunWith
+import org.scalatest.Spec
+import org.scalatest.junit.ShouldMatchersForJUnit
+
+@RunWith(classOf[JUnitRunner])
+class SpelHelperSpec extends Spec with ShouldMatchersForJUnit {
+  describe("SpelHelper") {
+
+    it ("should register and evaluate functions ") {
+      new SpelHelper()
+        .registerFunctionsFromClass(classOf[Functions])
+        .evalExpression(
+          "#test('check')", new {}, classOf[String]) should equal("check")
+    }
+
+    it ("should register implicit methods ") {
+      new SpelHelper()
+        .registerImplicitMethodsFromClass(classOf[Functions])
+        .lookupImplicitMethod("java.lang.String.test") should equal(
+          classOf[Functions].getMethod("test", classOf[String]))
+    }
+
+    it ("should register implicit constructors ") {
+      new SpelHelper()
+        .registerConstructorsFromClass(classOf[Functions])
+        .lookupImplicitConstructor("Functions[]") should equal(
+          classOf[Functions].getConstructor())
+    }
+
+    it ("should evaluate implicit methods ") {
+      new SpelHelper()
+        .registerImplicitMethodsFromClass(classOf[Functions])
+        .evalExpression(
+          "'check'.test()", new {}, classOf[String]) should equal("check")
+    }
+
+    it ("should evaluate implicit constructors ") {
+      new SpelHelper()
+        .registerConstructorsFromClass(classOf[Functions])
+        .evalExpression(
+          "new Functions()", new {}, classOf[Functions]) should equal(new Functions)
+    }
+
+    it ("should evaluate implicit properties ") {
+      new SpelHelper().evalExpression(
+        "'abc'.hashCode", new {}, classOf[int]) should equal("abc".hashCode) 
+    }
+
+  }
+}
+