refactor: finishes the replFregeTask refactoring

16 files changed, 231 insertions, 234 deletions

diff --git a/.gitignore b/.gitignore
index 151dd40..0292f5c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,4 +6,5 @@ build
 .settings
 bin
 .DS_Store
-lib
\ No newline at end of file
+lib
+.jqwik-database
\ No newline at end of file
diff --git a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/CompileFregeTaskFunctionalTest.java b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/CompileFregeTaskFunctionalTest.java
index af3225d..31e6d05 100644
--- a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/CompileFregeTaskFunctionalTest.java
+++ b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/CompileFregeTaskFunctionalTest.java
@@ -6,6 +6,8 @@ import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.createFregeSe
 import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.runAndFailGradleTask;
 import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.runGradleTask;
 import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.NEW_LINE;
+import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.MINIMAL_BUILD_FILE_CONFIG;
+import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.COMPLETION_FR;
 import static org.gradle.testkit.runner.TaskOutcome.FAILED;
 import static org.gradle.testkit.runner.TaskOutcome.FROM_CACHE;
 import static org.gradle.testkit.runner.TaskOutcome.SUCCESS;
@@ -29,30 +31,6 @@ import ch.fhnw.thga.gradleplugins.fregeproject.FregeSourceFile;
 
 public class CompileFregeTaskFunctionalTest
 {
-    private static final FregeSourceFile COMPLETION_FR = new FregeSourceFile(
-        String.format("%s/%s",
-            DEFAULT_RELATIVE_SOURCE_DIR,
-            "ch/fhnw/thga/Completion.fr"),
-        String.join
-        (
-            NEW_LINE,
-            "module ch.fhnw.thga.Completion where",
-            NEW_LINE,
-            NEW_LINE,
-            "  complete :: Int -> (Int, String)",
-            NEW_LINE,
-            "  complete i = (i, \"Frege rocks\")",
-            NEW_LINE
-        )
-    );
-    private static final String MINIMAL_BUILD_FILE_CONFIG = createFregeSection(
-        FregeDTOBuilder
-        .builder()
-        .version("'3.25.84'")
-        .release("'3.25alpha'")
-        .build()
-    );
-
     private static final boolean assertFileExists(
         File testProjectDir,
         String relativeFilePath)
diff --git a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/FregePluginFunctionalTest.java b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/FregePluginFunctionalTest.java
deleted file mode 100644
index 5159c92..0000000
--- a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/FregePluginFunctionalTest.java
+++ /dev/null
@@ -1,157 +0,0 @@
-package ch.fhnw.thga.gradleplugins;
-
-import static ch.fhnw.thga.gradleplugins.FregePlugin.COMPILE_FREGE_TASK_NAME;
-import static ch.fhnw.thga.gradleplugins.FregePlugin.SETUP_FREGE_TASK_NAME;
-import static ch.fhnw.thga.gradleplugins.FregePlugin.FREGE_EXTENSION_NAME;
-import static ch.fhnw.thga.gradleplugins.FregePlugin.FREGE_PLUGIN_ID;
-import static ch.fhnw.thga.gradleplugins.FregePlugin.REPL_FREGE_TASK_NAME;
-import static ch.fhnw.thga.gradleplugins.FregePlugin.RUN_FREGE_TASK_NAME;
-import static ch.fhnw.thga.gradleplugins.FregeExtension.DEFAULT_RELATIVE_SOURCE_DIR;
-import static ch.fhnw.thga.gradleplugins.GradleBuildFileConversionTest.createPluginsSection;
-import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.createFregeSection;
-import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.writeToFile;
-import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.createFregeGradleProject;
-import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.runGradleTask;
-import static org.gradle.testkit.runner.TaskOutcome.FAILED;
-import static org.gradle.testkit.runner.TaskOutcome.FROM_CACHE;
-import static org.gradle.testkit.runner.TaskOutcome.SUCCESS;
-import static org.gradle.testkit.runner.TaskOutcome.UP_TO_DATE;
-import static org.junit.jupiter.api.Assertions.assertEquals;
-import static org.junit.jupiter.api.Assertions.assertTrue;
-
-import java.io.BufferedWriter;
-import java.io.File;
-import java.io.FileWriter;
-import java.io.IOException;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.util.Collections;
-import java.util.stream.Stream;
-
-import org.gradle.api.Project;
-import org.gradle.testfixtures.ProjectBuilder;
-import org.gradle.testkit.runner.BuildResult;
-import org.gradle.testkit.runner.GradleRunner;
-import org.junit.jupiter.api.AfterEach;
-import org.junit.jupiter.api.BeforeEach;
-import org.junit.jupiter.api.DisplayNameGenerator;
-import org.junit.jupiter.api.IndicativeSentencesGeneration;
-import org.junit.jupiter.api.Nested;
-import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.io.TempDir;
-
-public class FregePluginFunctionalTest
-{
-    /*@Nested
-    @IndicativeSentencesGeneration(separator = " -> ", generator = DisplayNameGenerator.ReplaceUnderscores.class)
-    class Run_frege_task_works {
-            @Test
-            void given_frege_file_with_main_function_and_main_module_config() throws Exception {
-                    String fregeCode = String.join(NEW_LINE, "module ch.fhnw.thga.Main where", NEW_LINE, NEW_LINE,
-                                    "  main = do", NEW_LINE, "    println \"Frege rocks\"", NEW_LINE);
-                    String mainFr = "Main.fr";
-                    String buildFileConfig = createFregeSection(
-                                    FREGE_BUILDER.version("'3.25.84'").release("'3.25alpha'")
-                                                    .mainModule("'ch.fhnw.thga.Main'").build());
-                    setupDefaultFregeProjectStructure(fregeCode, mainFr, buildFileConfig);
-
-                    BuildResult result = runGradleTask(RUN_FREGE_TASK_NAME);
-                    assertTrue(project.getTasks().getByName(RUN_FREGE_TASK_NAME) instanceof RunFregeTask);
-                    assertEquals(SUCCESS, result.task(":" + RUN_FREGE_TASK_NAME).getOutcome());
-                    assertTrue(result.getOutput().contains("Frege rocks"));
-            }
-
-            @Test
-            void given_frege_file_without_main_function() throws Exception {
-                    String completionFr = "Completion.fr";
-                    String buildFileConfig = createFregeSection(
-                                    FREGE_BUILDER.version("'3.25.84'").release("'3.25alpha'")
-                                                    .mainModule("'ch.fhnw.thga.Completion'").build());
-                    setupDefaultFregeProjectStructure(FREGE_COMPLETION_MODULE_CODE, completionFr, buildFileConfig);
-
-                    BuildResult result = runAndFailGradleTask(RUN_FREGE_TASK_NAME);
-                    assertTrue(project.getTasks().getByName(RUN_FREGE_TASK_NAME) instanceof RunFregeTask);
-                    assertEquals(FAILED, result.task(":" + RUN_FREGE_TASK_NAME).getOutcome());
-                    assertTrue(result.getOutput().contains("Main method not found"));
-            }
-
-            @Test
-            void given_frege_file_with_main_function_and_main_module_command_line_option() throws Exception {
-                    String fregeCode = String.join(NEW_LINE, "module ch.fhnw.thga.Main where", NEW_LINE, NEW_LINE,
-                                    "  main = do", NEW_LINE, "    println \"Frege rocks\"", NEW_LINE);
-                    String mainFr = "Main.fr";
-                    String buildFileConfig = createFregeSection(
-                                    FREGE_BUILDER.version("'3.25.84'").release("'3.25alpha'").build());
-                    setupDefaultFregeProjectStructure(fregeCode, mainFr, buildFileConfig);
-
-                    BuildResult result = runGradleTask(RUN_FREGE_TASK_NAME, "--mainModule=ch.fhnw.thga.Main");
-                    assertTrue(project.getTasks().getByName(RUN_FREGE_TASK_NAME) instanceof RunFregeTask);
-                    assertEquals(SUCCESS, result.task(":" + RUN_FREGE_TASK_NAME).getOutcome());
-                    assertTrue(result.getOutput().contains("Frege rocks"));
-            }
-    }
-
-
-    @Nested
-    @IndicativeSentencesGeneration(
-        separator = " -> ",
-        generator = DisplayNameGenerator.ReplaceUnderscores.class)
-    class Repl_frege_task_works
-    {
-        @Test
-        void given_minimal_build_file_config_with_replModule() throws Exception
-        {
-            String completionFr            = "Completion.fr";
-            String minimalReplModuleConfig = createFregeSection(
-                FREGE_BUILDER
-                .version("'3.25.84'")
-                .release("'3.25alpha'")
-                .replSource(String.format("'ch.fhnw.thga.Completion'"))
-                .build());
-            setupDefaultFregeProjectStructure(
-                FREGE_COMPLETION_MODULE_CODE,
-                completionFr,
-                minimalReplModuleConfig);
-
-            BuildResult result = runGradleTask(REPL_FREGE_TASK_NAME);
-
-            assertTrue(
-                project.getTasks().getByName(REPL_FREGE_TASK_NAME)
-                instanceof ReplFregeTask);
-            assertEquals(SUCCESS, result.task(":" + REPL_FREGE_TASK_NAME).getOutcome());
-            assertTrue(result.getOutput().contains("java -cp"));
-            assertTrue(result.getOutput().contains("frege3.25.84.jar"));
-            assertTrue(result.getOutput().contains("Completion.java"));
-        }
-    }
-
-    @Nested
-    @IndicativeSentencesGeneration(
-        separator = " -> ",
-        generator = DisplayNameGenerator.ReplaceUnderscores.class)
-    class Repl_frege_task_fails
-    {
-        @Test
-        void given_minimal_build_file_config_without_repl_module() throws Exception
-        {
-            String completionFr           = "Completion.fr";
-            String minimalBuildFileConfig = createFregeSection(
-                FREGE_BUILDER
-                .version("'3.25.84'")
-                .release("'3.25alpha'")
-                .build());
-            setupDefaultFregeProjectStructure(
-                FREGE_COMPLETION_MODULE_CODE,
-                completionFr,
-                minimalBuildFileConfig);
-
-            BuildResult result = runAndFailGradleTask(REPL_FREGE_TASK_NAME);
-
-            assertTrue(
-                project.getTasks().getByName(REPL_FREGE_TASK_NAME)
-                instanceof ReplFregeTask);
-            assertEquals(FAILED, result.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
-        }
-    }*/
-}
\ No newline at end of file
diff --git a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/ReplFregeTaskFunctionalTest.java b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/ReplFregeTaskFunctionalTest.java
new file mode 100644
index 0000000..979d1d4
--- /dev/null
+++ b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/ReplFregeTaskFunctionalTest.java
@@ -0,0 +1,102 @@
+package ch.fhnw.thga.gradleplugins;
+
+import static ch.fhnw.thga.gradleplugins.FregePlugin.REPL_FREGE_TASK_NAME;
+import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.COMPLETION_FR;
+import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.MINIMAL_BUILD_FILE_CONFIG;
+import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.createFregeSection;
+import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.runAndFailGradleTask;
+import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.runGradleTask;
+import static org.gradle.testkit.runner.TaskOutcome.FAILED;
+import static org.gradle.testkit.runner.TaskOutcome.SUCCESS;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.io.File;
+import java.util.stream.Stream;
+
+import org.gradle.api.Project;
+import org.gradle.testkit.runner.BuildResult;
+import org.junit.jupiter.api.DisplayNameGenerator;
+import org.junit.jupiter.api.IndicativeSentencesGeneration;
+import org.junit.jupiter.api.Nested;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+import ch.fhnw.thga.gradleplugins.fregeproject.FregeProjectBuilder;
+
+public class ReplFregeTaskFunctionalTest
+{
+    @Nested
+    @IndicativeSentencesGeneration(
+        generator = DisplayNameGenerator.ReplaceUnderscores.class)
+    class Repl_frege_task_works
+    {
+        @Test
+        void given_minimal_build_file_config_with_repl_module(
+            @TempDir File testProjectDir)
+            throws Exception
+        {
+            String replModuleConfig = createFregeSection(
+                FregeDTOBuilder
+                .builder()
+                .version("'3.25.84'")
+                .release("'3.25alpha'")
+                .replModule("'ch.fhnw.thga.Completion'")
+                .build()
+            );
+            Project project = FregeProjectBuilder
+                .builder()
+                .projectRoot(testProjectDir)
+                .buildFile(replModuleConfig)
+                .fregeSourceFiles(() -> Stream.of(COMPLETION_FR))
+                .build();
+                                                                                         
+            BuildResult result = runGradleTask(testProjectDir, REPL_FREGE_TASK_NAME);
+                                                                                         
+            assertTrue(
+                project
+                .getTasks()
+                .getByName(REPL_FREGE_TASK_NAME)
+                instanceof ReplFregeTask);
+            assertEquals(
+                SUCCESS,
+                result.task(":" + REPL_FREGE_TASK_NAME).getOutcome());
+            assertTrue(result.getOutput().contains("java -cp"));
+            assertTrue(result.getOutput().contains("frege3.25.84.jar"));
+            assertFalse(result.getOutput().contains("Completion.class"));
+        }
+    }
+
+    @Nested
+    @IndicativeSentencesGeneration(
+        generator = DisplayNameGenerator.ReplaceUnderscores.class)
+    class Repl_frege_task_fails
+    {
+        @Test
+        void given_minimal_build_file_config_without_repl_module(
+            @TempDir File testProjectDir)
+            throws Exception
+        {
+            Project project = FregeProjectBuilder
+                .builder()
+                .projectRoot(testProjectDir)
+                .buildFile(MINIMAL_BUILD_FILE_CONFIG)
+                .fregeSourceFiles(() -> Stream.of(COMPLETION_FR))
+                .build();
+                                                                                         
+            BuildResult result = runAndFailGradleTask(testProjectDir, REPL_FREGE_TASK_NAME);
+
+            assertTrue(
+                project
+                .getTasks()
+                .getByName(REPL_FREGE_TASK_NAME)
+                instanceof ReplFregeTask
+            );
+            assertEquals(
+                FAILED,
+                result.task(":" + REPL_FREGE_TASK_NAME).getOutcome()
+            );
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/RunFregeTaskFunctionalTest.java b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/RunFregeTaskFunctionalTest.java
index c0c870a..c4d5bad 100644
--- a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/RunFregeTaskFunctionalTest.java
+++ b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/RunFregeTaskFunctionalTest.java
@@ -6,6 +6,7 @@ import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.NEW_LINE;
 import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.createFregeSection;
 import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.runAndFailGradleTask;
 import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.runGradleTask;
+import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.MINIMAL_BUILD_FILE_CONFIG;
 import static org.gradle.testkit.runner.TaskOutcome.FAILED;
 import static org.gradle.testkit.runner.TaskOutcome.SUCCESS;
 import static org.junit.jupiter.api.Assertions.assertEquals;
@@ -91,17 +92,10 @@ public class RunFregeTaskFunctionalTest
             @TempDir File testProjectDir)
             throws Exception
         {
-            String mainBuildConfig = createFregeSection(
-                FregeDTOBuilder
-                .builder()
-                .version("'3.25.84'")
-                .release("'3.25alpha'")
-                .build()
-            );
             Project project = FregeProjectBuilder
                 .builder()
                 .projectRoot(testProjectDir)
-                .buildFile(mainBuildConfig)
+                .buildFile(MINIMAL_BUILD_FILE_CONFIG)
                 .fregeSourceFiles(() -> Stream.of(MAIN_FR))
                 .build();
             
diff --git a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/SharedFunctionalTestLogic.java b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/SharedFunctionalTestLogic.java
index c98d7ac..51fa256 100644
--- a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/SharedFunctionalTestLogic.java
+++ b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/SharedFunctionalTestLogic.java
@@ -3,6 +3,7 @@ package ch.fhnw.thga.gradleplugins;
 import static ch.fhnw.thga.gradleplugins.FregePlugin.FREGE_EXTENSION_NAME;
 import static ch.fhnw.thga.gradleplugins.FregePlugin.FREGE_PLUGIN_ID;
 import static ch.fhnw.thga.gradleplugins.GradleBuildFileConversionTest.createPluginsSection;
+import static ch.fhnw.thga.gradleplugins.FregeExtension.DEFAULT_RELATIVE_SOURCE_DIR;
 
 import java.io.BufferedWriter;
 import java.io.File;
@@ -15,9 +16,35 @@ import org.gradle.testfixtures.ProjectBuilder;
 import org.gradle.testkit.runner.BuildResult;
 import org.gradle.testkit.runner.GradleRunner;
 
+import ch.fhnw.thga.gradleplugins.fregeproject.FregeSourceFile;
+
 public class SharedFunctionalTestLogic
 {
     public static final String NEW_LINE = System.lineSeparator();
+    public static final String MINIMAL_BUILD_FILE_CONFIG = createFregeSection(
+        FregeDTOBuilder
+        .builder()
+        .version("'3.25.84'")
+        .release("'3.25alpha'")
+        .build()
+    );
+    public static final FregeSourceFile COMPLETION_FR = new FregeSourceFile(
+        String.format("%s/%s",
+            DEFAULT_RELATIVE_SOURCE_DIR,
+            "ch/fhnw/thga/Completion.fr"),
+        String.join
+        (
+            NEW_LINE,
+            "module ch.fhnw.thga.Completion where",
+            NEW_LINE,
+            NEW_LINE,
+            "  complete :: Int -> (Int, String)",
+            NEW_LINE,
+            "  complete i = (i, \"Frege rocks\")",
+            NEW_LINE
+        )
+    );
+    
     static String createFregeSection(FregeDTO fregeDTO) 
    {
         return String.format(
diff --git a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/fregeproject/FregeProjectBuilder.java b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/fregeproject/FregeProjectBuilder.java
index d2c6aeb..0cb0746 100644
--- a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/fregeproject/FregeProjectBuilder.java
+++ b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/fregeproject/FregeProjectBuilder.java
@@ -1,27 +1,23 @@
 package ch.fhnw.thga.gradleplugins.fregeproject;
 
+import static ch.fhnw.thga.gradleplugins.FregeExtension.DEFAULT_RELATIVE_COMPILER_DOWNLOAD_DIR;
+import static ch.fhnw.thga.gradleplugins.FregePlugin.FREGE_PLUGIN_ID;
+import static ch.fhnw.thga.gradleplugins.GradleBuildFileConversionTest.createPluginsSection;
+
 import java.io.BufferedWriter;
 import java.io.File;
 import java.io.FileWriter;
 import java.io.IOException;
-import java.nio.file.CopyOption;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
 import java.nio.file.StandardCopyOption;
-import java.util.List;
 import java.util.function.Supplier;
 import java.util.stream.Stream;
 
 import org.gradle.api.Project;
 import org.gradle.testfixtures.ProjectBuilder;
 
-import ch.fhnw.thga.gradleplugins.FregeDTO;
-import static ch.fhnw.thga.gradleplugins.FregePlugin.FREGE_EXTENSION_NAME;
-import static ch.fhnw.thga.gradleplugins.FregePlugin.FREGE_PLUGIN_ID;
-import static ch.fhnw.thga.gradleplugins.GradleBuildFileConversionTest.createPluginsSection;
-import static ch.fhnw.thga.gradleplugins.FregeExtension.DEFAULT_RELATIVE_COMPILER_DOWNLOAD_DIR;
-
 public final class FregeProjectBuilder implements ProjectRoot, BuildFile, Build
 {
     private static final String LATEST_COMPILER_VERSION = "3.25.84";
@@ -82,12 +78,6 @@ public final class FregeProjectBuilder implements ProjectRoot, BuildFile, Build
              throw new RuntimeException(e.getMessage(), e.getCause());
          }
      }
- 
-     private static File appendToFile(File destination, String content) throws IOException
-     {
-         writeFile(destination, System.lineSeparator() + content, true);
-         return destination;
-     }
      
      private File setupLocalFregeCompilerInDefaultPath() throws IOException
      {
diff --git a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/fregeproject/FregeSourceFile.java b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/fregeproject/FregeSourceFile.java
index c161dbd..858f6d4 100644
--- a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/fregeproject/FregeSourceFile.java
+++ b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/fregeproject/FregeSourceFile.java
@@ -7,8 +7,8 @@ public class FregeSourceFile
 
     public FregeSourceFile(String modulePath, String sourceCode)
     {
-        this.modulePath   = modulePath;
-        this.sourceCode   = sourceCode;   
+        this.modulePath = modulePath;
+        this.sourceCode = sourceCode;   
     }
 
     public String getFregeModulePath()
diff --git a/src/main/java/ch/fhnw/thga/gradleplugins/FregeExtension.java b/src/main/java/ch/fhnw/thga/gradleplugins/FregeExtension.java
index cfcd393..18a9500 100644
--- a/src/main/java/ch/fhnw/thga/gradleplugins/FregeExtension.java
+++ b/src/main/java/ch/fhnw/thga/gradleplugins/FregeExtension.java
@@ -9,7 +9,8 @@ import org.gradle.api.file.ProjectLayout;
 import org.gradle.api.provider.ListProperty;
 import org.gradle.api.provider.Property;
 
-public abstract class FregeExtension {
+public abstract class FregeExtension
+{
     public static final String DEFAULT_RELATIVE_COMPILER_DOWNLOAD_DIR   = "lib";
     public static final String DEFAULT_RELATIVE_OUTPUT_DIR              = "classes/main/frege";
     public static final String DEFAULT_RELATIVE_SOURCE_DIR              = "src/main/frege";
@@ -29,10 +30,11 @@ public abstract class FregeExtension {
 
     public abstract ListProperty<String> getCompilerFlags();
 
-    public abstract Property<String> getReplSource();
+    public abstract Property<String> getReplModule();
 
     @Inject
-    public FregeExtension(ProjectLayout projectLayout) {
+    public FregeExtension(ProjectLayout projectLayout)
+    {
         getCompilerDownloadDir()
         .convention(projectLayout.getProjectDirectory().dir(DEFAULT_RELATIVE_COMPILER_DOWNLOAD_DIR));
 
diff --git a/src/main/java/ch/fhnw/thga/gradleplugins/FregePlugin.java b/src/main/java/ch/fhnw/thga/gradleplugins/FregePlugin.java
index 957dc83..9b725ac 100644
--- a/src/main/java/ch/fhnw/thga/gradleplugins/FregePlugin.java
+++ b/src/main/java/ch/fhnw/thga/gradleplugins/FregePlugin.java
@@ -68,8 +68,8 @@ public class FregePlugin implements Plugin<Project>
                     {
                         compileTask.getFregeCompileItem().set(task.getMainModule());
                         return compileTask;
-                    })
-                .get());
+                    }
+                ));
                 task.getFregeCompilerJar().set(
                     setupFregeCompilerTask.get().getFregeCompilerOutputPath());
                 task.getFregeOutputDir().set(extension.getOutputDir());
@@ -82,14 +82,14 @@ public class FregePlugin implements Plugin<Project>
             ReplFregeTask.class,
             task ->
             {
-                task.getReplSource().set(extension.getReplSource());
+                task.getReplModule().set(extension.getReplModule());
                 task.dependsOn(compileFregeTask.map(
                     compileTask ->
                     {
-                        compileTask.getFregeCompileItem().set(task.getReplSource());
+                        compileTask.getFregeCompileItem().set(task.getReplModule());
                         return compileTask;
-                    })
-                .get());
+                    }
+                ));
                 task.getFregeCompilerJar().set(
                     setupFregeCompilerTask.get().getFregeCompilerOutputPath());
                 task.getFregeOutputDir().set(extension.getOutputDir());
diff --git a/src/main/java/ch/fhnw/thga/gradleplugins/ReplFregeTask.java b/src/main/java/ch/fhnw/thga/gradleplugins/ReplFregeTask.java
index 7903d7e..67af55e 100644
--- a/src/main/java/ch/fhnw/thga/gradleplugins/ReplFregeTask.java
+++ b/src/main/java/ch/fhnw/thga/gradleplugins/ReplFregeTask.java
@@ -1,7 +1,9 @@
 package ch.fhnw.thga.gradleplugins;
 
+import static ch.fhnw.thga.gradleplugins.SharedTaskLogic.extractClassNameFromFregeModuleName;
 import org.gradle.api.DefaultTask;
 import org.gradle.api.file.DirectoryProperty;
+import org.gradle.api.file.FileTree;
 import org.gradle.api.file.RegularFileProperty;
 import org.gradle.api.provider.Property;
 import org.gradle.api.provider.Provider;
@@ -25,15 +27,29 @@ public abstract class ReplFregeTask extends DefaultTask {
     public abstract DirectoryProperty getFregeOutputDir();
 
     @Input
-    @Option(option     = "replSource",
-           description = "The filename which you want to load into the repl, e.g. 'myFregeFile.fr'")
-    public abstract Property<String> getReplSource();
+    @Option(option     = "replModule",
+           description = "The full name of the module which you want to load into the repl, e.g. 'my.mod.Name'")
+    public abstract Property<String> getReplModule();
 
     @Internal
     public final Provider<String> getReplClassName()
     {
-        return getReplSource()
-            .map(replSource -> replSource.substring(replSource.lastIndexOf(".")));
+        return getReplModule()
+            .map(replSource -> extractClassNameFromFregeModuleName(replSource));
+    }
+
+    @Internal
+    public final Provider<FileTree> getClasspathWithoutReplClassFile()
+    {
+        return getFregeOutputDir()
+            .map(outDir -> outDir.getAsFileTree())
+            .map(tree   -> tree.matching(pattern -> pattern.exclude("**/*.java")))
+            .map(tree   -> tree.matching(pattern -> pattern.exclude(
+                String.format(
+                    "**/%s.class",
+                    getReplClassName().get()
+                )
+            )));
     }
 
     @TaskAction
@@ -45,7 +61,7 @@ public abstract class ReplFregeTask extends DefaultTask {
                 getProject(),
                 getFregeDependencies(),
                 getFregeCompilerJar(),
-                getFregeOutputDir())
+                getClasspathWithoutReplClassFile())
             .get().getAsPath(),
             REPL_MAIN_CLASS));
     }
diff --git a/src/main/java/ch/fhnw/thga/gradleplugins/SharedTaskLogic.java b/src/main/java/ch/fhnw/thga/gradleplugins/SharedTaskLogic.java
index 57af617..e6191a3 100644
--- a/src/main/java/ch/fhnw/thga/gradleplugins/SharedTaskLogic.java
+++ b/src/main/java/ch/fhnw/thga/gradleplugins/SharedTaskLogic.java
@@ -5,7 +5,8 @@ import org.gradle.api.file.FileCollection;
 import org.gradle.api.provider.Provider;
 import org.gradle.api.provider.Property;
 
-public final class SharedTaskLogic {
+public final class SharedTaskLogic
+{
     private SharedTaskLogic() {};
 
     public static final Provider<FileCollection> setupClasspath(
@@ -19,4 +20,9 @@ public final class SharedTaskLogic {
                                            : project.files(depsClasspath, paths);
         });
     }
+
+   public static final String extractClassNameFromFregeModuleName(String moduleName)
+   {
+       return moduleName.substring(moduleName.lastIndexOf(".") + 1);
+   } 
 }
diff --git a/src/test/java/ch/fhnw/thga/gradleplugins/Builder.java b/src/test/java/ch/fhnw/thga/gradleplugins/Builder.java
index df070a2..d379013 100644
--- a/src/test/java/ch/fhnw/thga/gradleplugins/Builder.java
+++ b/src/test/java/ch/fhnw/thga/gradleplugins/Builder.java
@@ -15,7 +15,7 @@ public interface Builder {
 
     Builder compilerFlags(String compilerFlags);
 
-    Builder replSource(String replSource);
+    Builder replModule(String replModule);
 
     FregeDTO build();
 }
diff --git a/src/test/java/ch/fhnw/thga/gradleplugins/FregeDTO.java b/src/test/java/ch/fhnw/thga/gradleplugins/FregeDTO.java
index e092eac..bea1e81 100644
--- a/src/test/java/ch/fhnw/thga/gradleplugins/FregeDTO.java
+++ b/src/test/java/ch/fhnw/thga/gradleplugins/FregeDTO.java
@@ -14,7 +14,7 @@ public class FregeDTO {
     public final String outputDir;
     public final String mainModule;
     public final String compilerFlags;
-    public final String replSource;
+    public final String replModule;
 
     public FregeDTO(
         String version,
@@ -24,7 +24,7 @@ public class FregeDTO {
         String outputDir,
         String mainModule,
         String compilerFlags,
-        String replSource) {
+        String replModule) {
         this.version = version;
         this.release = release;
         this.compilerDownloadDir = compilerDownloadDir;
@@ -32,7 +32,7 @@ public class FregeDTO {
         this.outputDir = outputDir;
         this.mainModule = mainModule;
         this.compilerFlags = compilerFlags;
-        this.replSource = replSource;
+        this.replModule = replModule;
     }
 
     public String getVersion() {
@@ -63,8 +63,8 @@ public class FregeDTO {
         return compilerFlags;
     }
 
-    public String getReplSource() {
-        return replSource;
+    public String getReplModule() {
+        return replModule;
     }
 
     private String getFieldValue(Field field) {
diff --git a/src/test/java/ch/fhnw/thga/gradleplugins/FregeDTOBuilder.java b/src/test/java/ch/fhnw/thga/gradleplugins/FregeDTOBuilder.java
index d7fe9f1..58e8396 100644
--- a/src/test/java/ch/fhnw/thga/gradleplugins/FregeDTOBuilder.java
+++ b/src/test/java/ch/fhnw/thga/gradleplugins/FregeDTOBuilder.java
@@ -8,7 +8,7 @@ public final class FregeDTOBuilder implements Builder {
     private String outputDir = "";
     private String mainModule = "";
     private String compilerFlags = "";
-    private String replSource = "";
+    private String replModule = "";
 
     private FregeDTOBuilder() {}
 
@@ -65,9 +65,9 @@ public final class FregeDTOBuilder implements Builder {
     }
 
     @Override
-    public Builder replSource(String replSource)
+    public Builder replModule(String replModule)
     {
-        this.replSource = replSource;
+        this.replModule = replModule;
         return this;
     }
 
@@ -80,6 +80,6 @@ public final class FregeDTOBuilder implements Builder {
             outputDir,
             mainModule,
             compilerFlags,
-            replSource);
+            replModule);
     }
 }
diff --git a/src/test/java/ch/fhnw/thga/gradleplugins/SharedTaskLogicTest.java b/src/test/java/ch/fhnw/thga/gradleplugins/SharedTaskLogicTest.java
index 6f10d70..bb353a8 100644
--- a/src/test/java/ch/fhnw/thga/gradleplugins/SharedTaskLogicTest.java
+++ b/src/test/java/ch/fhnw/thga/gradleplugins/SharedTaskLogicTest.java
@@ -1,14 +1,52 @@
 package ch.fhnw.thga.gradleplugins;
 
-import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static ch.fhnw.thga.gradleplugins.SharedTaskLogic.extractClassNameFromFregeModuleName;
+
 import org.junit.jupiter.api.TestInstance;
 import org.junit.jupiter.api.TestInstance.Lifecycle;
 
+import net.jqwik.api.Example;
+import net.jqwik.api.ForAll;
+import net.jqwik.api.Property;
+
 @TestInstance(Lifecycle.PER_CLASS)
 public class SharedTaskLogicTest 
 {
-    @Test
+    @Example
     void given_valid_frege_module_name_then_can_extract_class_name()
     {
+        assertEquals(
+            extractClassNameFromFregeModuleName("ch.fhnw.thga.Completion"),
+            "Completion"
+        );
+    }
+
+    @Example
+    void given_empty_frege_module_name_then_returns_empty_string()
+    {
+        assertEquals(
+            extractClassNameFromFregeModuleName(""),
+            ""
+        );
+    }
+
+    @Example
+    void module_name_without_a_package_equals_class_name()
+    {
+        assertEquals(
+            extractClassNameFromFregeModuleName("Completion"),
+            "Completion"
+        );
+    }
+
+    @Property
+    void class_name_is_the_suffix_of_the_full_module_name(
+        @ForAll String aString)
+    {
+        String expectedFregeClassName = "Completion";
+        assertEquals(
+            extractClassNameFromFregeModuleName(String.join(".", expectedFregeClassName)),
+            expectedFregeClassName);
     }
 }
\ No newline at end of file