Merge pull request #23 from tricktron/f-minimal-frege-repl

New Simpler Repl Task

12 files changed, 1292 insertions, 556 deletions

diff --git a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/CompileFregeTaskFunctionalTest.java b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/CompileFregeTaskFunctionalTest.java
new file mode 100644
index 0000000..90a459c
--- /dev/null
+++ b/src/functionalTest/java/ch/fhnw/thga/gradleplugins/CompileFregeTaskFunctionalTest.java
@@ -0,0 +1,408 @@
+package ch.fhnw.thga.gradleplugins;
+
+import static ch.fhnw.thga.gradleplugins.FregeExtension.DEFAULT_RELATIVE_SOURCE_DIR;
+import static ch.fhnw.thga.gradleplugins.FregePlugin.COMPILE_FREGE_TASK_NAME;
+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.NEW_LINE;
+import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.MINIMAL_BUILD_FILE_CONFIG;
+import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.COMPLETION_FR;
+import static ch.fhnw.thga.gradleplugins.SharedFunctionalTestLogic.assertFileExists;
+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.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;
+import ch.fhnw.thga.gradleplugins.fregeproject.FregeSourceFile;
+
+public class CompileFregeTaskFunctionalTest
+{
+    @Nested
+    @IndicativeSentencesGeneration(
+        separator = " -> ",
+        generator = DisplayNameGenerator.ReplaceUnderscores.class
+    )
+    class Compile_frege_task_works {
+
+        @Test
+        void given_frege_code_in_default_source_dir_and_minimal_build_file_config(
+            @TempDir File testProjectDir)
+            throws Exception
+        {
+            Project project = FregeProjectBuilder
+                .builder()
+                .projectRoot(testProjectDir)
+                .buildFile(MINIMAL_BUILD_FILE_CONFIG)
+                .fregeSourceFiles(() -> Stream.of(COMPLETION_FR))
+                .build();
+            
+            BuildResult result = runGradleTask(testProjectDir, COMPILE_FREGE_TASK_NAME);
+
+            assertTrue(
+                project
+                .getTasks()
+                .getByName(COMPILE_FREGE_TASK_NAME) 
+                instanceof CompileFregeTask
+            );
+            assertEquals(
+                SUCCESS,
+                result.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome()
+            );
+            assertFileExists(
+                testProjectDir,
+                "build/classes/main/frege/ch/fhnw/thga/Completion.java"
+            );
+            assertFileExists(
+                testProjectDir,
+                "build/classes/main/frege/ch/fhnw/thga/Completion.class"
+            );
+        }
+        @Test
+        void given_frege_code_and_many_compiler_flags(
+            @TempDir File testProjectDir)
+            throws Exception
+        {
+            String buildConfigWithCompilerFlags = createFregeSection(
+                FregeDTOBuilder
+                .builder()
+                .version("'3.25.84'")
+                .release("'3.25alpha'")
+                .compilerFlags("['-v', '-make', '-O', '-hints']")
+                .build()
+            );
+            Project project = FregeProjectBuilder
+                .builder()
+                .projectRoot(testProjectDir)
+                .buildFile(buildConfigWithCompilerFlags)
+                .fregeSourceFiles(() -> Stream.of(COMPLETION_FR))
+                .build();
+            
+            BuildResult result = runGradleTask(testProjectDir, COMPILE_FREGE_TASK_NAME);
+
+            assertTrue(
+                project
+                .getTasks()
+                .getByName(COMPILE_FREGE_TASK_NAME) 
+                instanceof CompileFregeTask
+            );
+            assertEquals(
+                SUCCESS,
+                result.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome()
+            );
+            assertFileExists(
+                testProjectDir,
+                "build/classes/main/frege/ch/fhnw/thga/Completion.java"
+            );
+            assertFileExists(
+                testProjectDir,
+                "build/classes/main/frege/ch/fhnw/thga/Completion.class"
+            );
+        }
+        @Test
+        void given_frege_code_in_custom_source_and_output_dir_and_minimal_build_file_config(
+            @TempDir File testProjectDir)
+            throws Exception
+        {
+            String customSourceAndOutputBuildFileConfig = createFregeSection(
+                FregeDTOBuilder
+                .builder()
+                .version("'3.25.84'")
+                .release("'3.25alpha'")
+                .mainSourceDir("layout.projectDirectory.dir('src/frege')")
+                .outputDir("layout.buildDirectory.dir('frege')")
+                .build()
+            );
+            Project project = FregeProjectBuilder
+                .builder()
+                .projectRoot(testProjectDir)
+                .buildFile(customSourceAndOutputBuildFileConfig)
+                .fregeSourceFiles(() -> Stream.of(new FregeSourceFile(
+                    "src/frege/ch/fhnw/thga/Completion.fr",
+                    COMPLETION_FR.getFregeSourceCode())))
+                .build();
+
+            BuildResult result = runGradleTask(testProjectDir, COMPILE_FREGE_TASK_NAME);
+            assertTrue(
+                project
+                .getTasks()
+                .getByName(COMPILE_FREGE_TASK_NAME)
+                instanceof CompileFregeTask
+            );
+            assertEquals(
+                SUCCESS,
+                result.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome()
+            );
+            assertFileExists(
+                testProjectDir,
+                "build/frege/ch/fhnw/thga/Completion.java"
+            );
+            assertFileExists(
+                testProjectDir,
+                "build/frege/ch/fhnw/thga/Completion.class"
+            );
+        }
+        @Test
+        void and_is_up_to_date_given_no_code_changes(
+            @TempDir File testProjectDir)
+            throws Exception
+        {
+            FregeProjectBuilder
+                .builder()
+                .projectRoot(testProjectDir)
+                .buildFile(MINIMAL_BUILD_FILE_CONFIG)
+                .fregeSourceFiles(() -> Stream.of(COMPLETION_FR))
+                .build();
+            
+            BuildResult first = runGradleTask(testProjectDir, COMPILE_FREGE_TASK_NAME);
+            
+            assertEquals(
+                SUCCESS, 
+                first.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
+
+            BuildResult second = runGradleTask(testProjectDir, COMPILE_FREGE_TASK_NAME);
+            
+            assertEquals(
+                UP_TO_DATE,
+                second.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
+        }
+        @Test
+        void and_is_cached_given_cache_hit(
+            @TempDir File testProjectDir) 
+            throws Exception 
+        {
+            FregeProjectBuilder
+                .builder()
+                .projectRoot(testProjectDir)
+                .buildFile(MINIMAL_BUILD_FILE_CONFIG)
+                .fregeSourceFiles(() -> Stream.of(COMPLETION_FR))
+                .build();
+
+            BuildResult first = runGradleTask(
+                testProjectDir,
+                COMPILE_FREGE_TASK_NAME,
+                "--build-cache"
+            );
+            
+            assertEquals(
+                SUCCESS, 
+                first.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome()
+            );
+
+            String codeChange = String.join(
+                NEW_LINE, 
+                "module ch.fhnw.thga.Completion where",
+                NEW_LINE,
+                NEW_LINE,
+                "  frob :: Int -> (Int, String)",
+                NEW_LINE,
+                "  frob i = (i, \"Frege rocks\")",
+                NEW_LINE
+            );
+            FregeProjectBuilder
+                .builder()
+                .projectRoot(testProjectDir)
+                .buildFile(MINIMAL_BUILD_FILE_CONFIG)
+                .fregeSourceFiles(() -> Stream.of(new FregeSourceFile(
+                    COMPLETION_FR.getFregeModulePath(),
+                    codeChange)))
+                .build();
+
+            BuildResult second = runGradleTask(
+                testProjectDir,
+                COMPILE_FREGE_TASK_NAME,
+                "--build-cache"
+            );
+            
+            assertEquals(
+                SUCCESS,
+                second.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome()
+            );
+
+            FregeProjectBuilder
+                .builder()
+                .projectRoot(testProjectDir)
+                .buildFile(MINIMAL_BUILD_FILE_CONFIG)
+                .fregeSourceFiles(() -> Stream.of(COMPLETION_FR))
+                .build();
+            BuildResult third = runGradleTask(
+                testProjectDir,
+                COMPILE_FREGE_TASK_NAME,
+                "--build-cache"
+            );
+            
+            assertEquals(
+                FROM_CACHE, 
+                third.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
+        }
+        @Test
+        void given_two_dependent_frege_files_in_default_source_dir_and_minimal_build_file_config(
+            @TempDir File testProjectDir)
+            throws Exception
+        {
+            String frobCode = String.join(
+                NEW_LINE,
+                "module ch.fhnw.thga.Frob where",
+                NEW_LINE,
+                NEW_LINE,
+                "import ch.fhnw.thga.Completion (complete)",
+                NEW_LINE,
+                "frob i = complete $ i + i",
+                NEW_LINE
+            );
+            Project project = FregeProjectBuilder
+                .builder()
+                .projectRoot(testProjectDir)
+                .buildFile(MINIMAL_BUILD_FILE_CONFIG)
+                .fregeSourceFiles(() -> Stream.of(COMPLETION_FR, new FregeSourceFile(
+                    String.format(
+                        "%s/%s",
+                        DEFAULT_RELATIVE_SOURCE_DIR,
+                        "ch/fhnw/thga/Frob.fr"
+                    ),
+                    frobCode)))
+                .build();
+            
+            BuildResult result = runGradleTask(
+                testProjectDir,
+                COMPILE_FREGE_TASK_NAME,
+                "--compileItem=ch.fhnw.thga.Frob"
+            );
+
+            assertTrue(
+                project
+                .getTasks()
+                .getByName(COMPILE_FREGE_TASK_NAME) 
+                instanceof CompileFregeTask
+            );
+            assertEquals(
+                SUCCESS,
+                result.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome()
+            );
+            assertFileExists(
+                testProjectDir,
+                "build/classes/main/frege/ch/fhnw/thga/Completion.java"
+            );
+            assertFileExists(
+                testProjectDir,
+                "build/classes/main/frege/ch/fhnw/thga/Completion.class"
+            );
+            assertFileExists(
+                testProjectDir,
+                "build/classes/main/frege/ch/fhnw/thga/Frob.java"
+            );
+            assertFileExists(
+                testProjectDir,
+                "build/classes/main/frege/ch/fhnw/thga/Frob.class"
+            );
+        }
+    }
+    @Nested
+    @IndicativeSentencesGeneration(
+        separator = " -> ",
+        generator = DisplayNameGenerator.ReplaceUnderscores.class
+    )
+    class Compile_frege_task_fails
+    {
+        @Test
+        void given_frege_code_and_illegal_compiler_flags(
+            @TempDir File testProjectDir)
+            throws Exception
+        {
+            String buildConfigWithIllegalCompilerFlags = createFregeSection(
+                FregeDTOBuilder
+                .builder()
+                .version("'3.25.84'")
+                .release("'3.25alpha'")
+                .compilerFlags("['-make', '-bla']")
+                .build()
+            );
+            Project project = FregeProjectBuilder
+                .builder()
+                .projectRoot(testProjectDir)
+                .buildFile(buildConfigWithIllegalCompilerFlags)
+                .fregeSourceFiles(() -> Stream.of(COMPLETION_FR))
+                .build();
+
+            BuildResult result = runAndFailGradleTask(testProjectDir, COMPILE_FREGE_TASK_NAME);
+
+            assertTrue(
+                project
+                .getTasks()
+                .getByName(COMPILE_FREGE_TASK_NAME)
+                instanceof CompileFregeTask
+            );
+            assertEquals(
+                FAILED, 
+                result.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome()
+            );
+        }
+        @Test
+        void given_two_dependent_frege_files_in_default_source_dir_and_without_make_compiler_flag(
+            @TempDir File testProjectDir)
+            throws Exception
+        {
+            String frobCode = String.join(
+            NEW_LINE,
+            "module ch.fhnw.thga.Frob where",
+            NEW_LINE,
+            NEW_LINE,
+            "import ch.fhnw.thga.Completion (complete)",
+            NEW_LINE,
+            "frob i = complete $ i + i",
+            NEW_LINE
+            );
+            String minimalBuildFileConfigWithoutMake = createFregeSection(
+                FregeDTOBuilder
+                .builder()
+                .version("'3.25.84'")
+                .release("'3.25alpha'")
+                .compilerFlags("['-v']")
+                .build()
+            );
+            Project project = FregeProjectBuilder
+                .builder()
+                .projectRoot(testProjectDir)
+                .buildFile(minimalBuildFileConfigWithoutMake)
+                .fregeSourceFiles(() -> Stream.of(COMPLETION_FR, new FregeSourceFile(
+                    String.format(
+                        "%s/%s",
+                        DEFAULT_RELATIVE_SOURCE_DIR,
+                        "ch/fhnw/thga/Frob.fr"
+                    ),
+                    frobCode)))
+                .build();
+            
+            BuildResult result = runAndFailGradleTask(
+                testProjectDir,
+                COMPILE_FREGE_TASK_NAME,
+                "--compileItem=ch.fhnw.thga.Frob"
+            );
+
+            assertTrue(
+                project
+                .getTasks()
+                .getByName(COMPILE_FREGE_TASK_NAME) 
+                instanceof CompileFregeTask
+            );
+            assertEquals(
+                FAILED, 
+                result.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome()
+            );
+        }
+    }
+}
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 a7c2b35..0000000
--- a/src/functionalTest/java/ch/fhnw/thga/gradleplugins/FregePluginFunctionalTest.java
+++ /dev/null
@@ -1,556 +0,0 @@
-package ch.fhnw.thga.gradleplugins;
-
-import static ch.fhnw.thga.gradleplugins.FregeExtension.DEFAULT_DOWNLOAD_DIRECTORY;
-import static ch.fhnw.thga.gradleplugins.FregePlugin.COMPILE_FREGE_TASK_NAME;
-import static ch.fhnw.thga.gradleplugins.FregePlugin.DEPS_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.FregePlugin.SETUP_FREGE_TASK_NAME;
-import static ch.fhnw.thga.gradleplugins.GradleBuildFileConversionTest.createPluginsSection;
-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.assertFalse;
-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.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.BeforeAll;
-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.TestInstance;
-import org.junit.jupiter.api.TestInstance.Lifecycle;
-import org.junit.jupiter.api.io.TempDir;
-
-import ch.fhnw.thga.gradleplugins.internal.DependencyFregeTask;
-
-@TestInstance(Lifecycle.PER_CLASS)
-public class FregePluginFunctionalTest {
-    private static final String NEW_LINE = System.lineSeparator();
-    private static final String SIMPLE_FREGE_CODE = 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 FregeDTOBuilder fregeBuilder;
-
-    @TempDir
-    File testProjectDir;
-    private File buildFile;
-    private File settingsFile;
-    private Project project;
-
-    private void writeFile(File destination, String content, boolean append) throws IOException {
-            try (BufferedWriter output = new BufferedWriter(new FileWriter(destination, append))) {
-                    output.write(content);
-            }
-    }
-
-    private void writeToFile(File destination, String content) throws IOException {
-            writeFile(destination, content, false);
-    }
-
-    private void appendToFile(File destination, String content) throws IOException {
-            writeFile(destination, System.lineSeparator() + content, true);
-    }
-
-    private static String createFregeSection(FregeDTO fregeDTO) {
-            return String.format(
-                "%s {%s  %s%s}",
-                FREGE_EXTENSION_NAME,
-                System.lineSeparator(),
-                fregeDTO.toBuildFile(),
-                System.lineSeparator());
-    }
-
-    private BuildResult runGradleTask(String... taskName) {
-            return GradleRunner.create().withProjectDir(testProjectDir).withPluginClasspath()
-                            .withArguments(taskName)
-                            .build();
-    }
-
-    private BuildResult runAndFailGradleTask(String taskName, String... args) {
-            return GradleRunner.create().withProjectDir(testProjectDir).withPluginClasspath()
-                            .withArguments(taskName)
-                            .buildAndFail();
-    }
-
-    private void setupDefaultFregeProjectStructure(String fregeCode, String fregeFileName, String buildFileConfig)
-                    throws Exception {
-            Files.createDirectories(testProjectDir.toPath().resolve(Paths.get("src", "main", "frege")));
-            File fregeFile = testProjectDir.toPath().resolve(Paths.get("src", "main", "frege", fregeFileName))
-                            .toFile();
-            writeToFile(fregeFile, fregeCode);
-            appendToFile(buildFile, buildFileConfig);
-    }
-
-    @BeforeAll
-    void beforeAll() throws Exception {
-            settingsFile = new File(testProjectDir, "settings.gradle");
-            writeToFile(settingsFile, "rootProject.name='frege-plugin'");
-            project = ProjectBuilder.builder().withProjectDir(testProjectDir).build();
-            project.getPluginManager().apply(FREGE_PLUGIN_ID);
-
-    }
-
-    @BeforeEach
-    void setup() throws Exception {
-            buildFile = new File(testProjectDir, "build.gradle");
-            writeToFile(buildFile, createPluginsSection(Stream.of(FREGE_PLUGIN_ID)));
-            fregeBuilder = FregeDTOBuilder.getInstance();
-    }
-
-    @AfterEach
-    void cleanup() {
-            testProjectDir.delete();
-    }
-
-    @Nested
-    @TestInstance(Lifecycle.PER_CLASS)
-    @IndicativeSentencesGeneration(separator = " -> ", generator = DisplayNameGenerator.ReplaceUnderscores.class)
-    class Setup_frege_task_works {
-
-            @Test
-            void given_minimal_build_file_config() throws Exception {
-                    String minimalBuildFileConfig = createFregeSection(
-                                    fregeBuilder.version("'3.25.84'").release("'3.25alpha'").build());
-                    appendToFile(buildFile, minimalBuildFileConfig);
-
-                    BuildResult result = runGradleTask(SETUP_FREGE_TASK_NAME);
-
-                    assertTrue(project.getTasks().getByName(SETUP_FREGE_TASK_NAME) instanceof SetupFregeTask);
-                    assertEquals(SUCCESS, result.task(":" + SETUP_FREGE_TASK_NAME).getOutcome());
-                    assertTrue(testProjectDir.toPath()
-                                    .resolve(Paths.get(DEFAULT_DOWNLOAD_DIRECTORY, "frege3.25.84.jar"))
-                                    .toFile().exists());
-            }
-
-            @Test
-            void given_custom_frege_compiler_download_directory_in_build_file_config() throws Exception {
-                    String buildFileConfigWithCustomDownloadDir = createFregeSection(fregeBuilder
-                                    .version("'3.25.84'")
-                                    .release("'3.25alpha'")
-                                    .compilerDownloadDir("layout.projectDirectory.dir('dist')").build());
-                    appendToFile(buildFile, buildFileConfigWithCustomDownloadDir);
-
-                    BuildResult result = runGradleTask(SETUP_FREGE_TASK_NAME);
-
-                    assertTrue(project.getTasks().getByName(SETUP_FREGE_TASK_NAME) instanceof SetupFregeTask);
-                    assertEquals(SUCCESS, result.task(":" + SETUP_FREGE_TASK_NAME).getOutcome());
-                    assertTrue(testProjectDir.toPath().resolve(Paths.get("dist", "frege3.25.84.jar")).toFile()
-                                    .exists());
-            }
-    }
-
-    @Nested
-    @TestInstance(Lifecycle.PER_CLASS)
-    @IndicativeSentencesGeneration(separator = " -> ", generator = DisplayNameGenerator.ReplaceUnderscores.class)
-    class Compile_frege_task_works {
-
-            @Test
-            void given_frege_code_in_default_source_dir_and_minimal_build_file_config() throws Exception {
-                    String completionFr = "Completion.fr";
-                    String minimalBuildFileConfig = createFregeSection(
-                                    fregeBuilder.version("'3.25.84'").release("'3.25alpha'").build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr, minimalBuildFileConfig);
-
-                    BuildResult result = runGradleTask(COMPILE_FREGE_TASK_NAME);
-
-                    assertTrue(project.getTasks().getByName(COMPILE_FREGE_TASK_NAME) instanceof CompileFregeTask);
-                    assertEquals(SUCCESS, result.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
-                    assertTrue(new File(
-                                    testProjectDir.getAbsolutePath()
-                                                    + "/build/classes/main/frege/ch/fhnw/thga/Completion.java")
-                                                                    .exists());
-                    assertTrue(new File(
-                                    testProjectDir.getAbsolutePath()
-                                                    + "/build/classes/main/frege/ch/fhnw/thga/Completion.class")
-                                                                    .exists());
-            }
-
-            @Test
-            void given_frege_code_and_many_compiler_flags() throws Exception {
-                    String completionFr = "Completion.fr";
-                    String buildConfigWithCompilerFlags = createFregeSection(fregeBuilder.version("'3.25.84'")
-                                    .release("'3.25alpha'").compilerFlags("['-v', '-make', '-O', '-hints']")
-                                    .build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr,
-                                    buildConfigWithCompilerFlags);
-
-                    BuildResult result = runGradleTask(COMPILE_FREGE_TASK_NAME);
-
-                    assertTrue(project.getTasks().getByName(COMPILE_FREGE_TASK_NAME) instanceof CompileFregeTask);
-                    assertEquals(SUCCESS, result.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
-                    assertTrue(new File(
-                                    testProjectDir.getAbsolutePath()
-                                                    + "/build/classes/main/frege/ch/fhnw/thga/Completion.java")
-                                                                    .exists());
-                    assertTrue(new File(
-                                    testProjectDir.getAbsolutePath()
-                                                    + "/build/classes/main/frege/ch/fhnw/thga/Completion.class")
-                                                                    .exists());
-            }
-
-            @Test
-            void given_frege_code_in_custom_source_dir_and_custom_output_dir_and_minimal_build_file_config()
-                            throws Exception {
-                    Path customMainSourceDir = testProjectDir.toPath().resolve(Paths.get("src", "frege"));
-                    Files.createDirectories(customMainSourceDir);
-                    File completionFr = customMainSourceDir.resolve("Completion.fr").toFile();
-                    writeToFile(completionFr, SIMPLE_FREGE_CODE);
-                    String minimalBuildFileConfig = createFregeSection(
-                                    fregeBuilder.version("'3.25.84'").release("'3.25alpha'")
-                                                    .mainSourceDir("layout.projectDirectory.dir('src/frege')")
-                                                    .outputDir("layout.buildDirectory.dir('frege')").build());
-                    appendToFile(buildFile, minimalBuildFileConfig);
-
-                    BuildResult result = runGradleTask(COMPILE_FREGE_TASK_NAME);
-
-                    assertTrue(project.getTasks().getByName(COMPILE_FREGE_TASK_NAME) instanceof CompileFregeTask);
-                    assertEquals(SUCCESS, result.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
-                    assertTrue(
-                                    new File(testProjectDir.getAbsolutePath()
-                                                    + "/build/frege/ch/fhnw/thga/Completion.java").exists());
-                    assertTrue(
-                                    new File(testProjectDir.getAbsolutePath()
-                                                    + "/build/frege/ch/fhnw/thga/Completion.class").exists());
-            }
-
-            @Test
-            void and_is_up_to_date_given_no_code_changes() throws Exception {
-                    String completionFr = "Completion.fr";
-                    String minimalBuildFileConfig = createFregeSection(
-                                    fregeBuilder.version("'3.25.84'").release("'3.25alpha'").build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr, minimalBuildFileConfig);
-
-                    BuildResult first = runGradleTask(COMPILE_FREGE_TASK_NAME);
-                    assertEquals(SUCCESS, first.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
-
-                    BuildResult second = runGradleTask(COMPILE_FREGE_TASK_NAME);
-                    assertEquals(UP_TO_DATE, second.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
-            }
-
-            @Test
-            void and_is_cached_given_cache_hit() throws Exception {
-                    String completionFr = "Completion.fr";
-                    String minimalBuildFileConfig = createFregeSection(
-                                    fregeBuilder.version("'3.25.84'").release("'3.25alpha'").build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr, minimalBuildFileConfig);
-
-                    BuildResult first = runGradleTask(COMPILE_FREGE_TASK_NAME, "--build-cache");
-                    assertEquals(SUCCESS, first.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
-
-                    String codeChange = String.join(NEW_LINE, "module ch.fhnw.thga.Completion where", NEW_LINE,
-                                    NEW_LINE,
-                                    "  frob :: Int -> (Int, String)", NEW_LINE, "  frob i = (i, \"Frege rocks\")",
-                                    NEW_LINE);
-                    setupDefaultFregeProjectStructure(codeChange, completionFr, "");
-
-                    BuildResult second = runGradleTask(COMPILE_FREGE_TASK_NAME, "--build-cache");
-                    assertEquals(SUCCESS, second.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
-
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr, "");
-                    BuildResult third = runGradleTask(COMPILE_FREGE_TASK_NAME, "--build-cache");
-                    assertEquals(FROM_CACHE, third.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
-            }
-
-            @Test
-            void given_two_dependent_frege_files_in_default_source_dir_and_minimal_build_file_config()
-                            throws Exception {
-                    String completionFr = "Completion.fr";
-                    String frobFr = "Frob.fr";
-                    String frobCode = String.join(NEW_LINE, "module ch.fhnw.thga.Frob where", NEW_LINE, NEW_LINE,
-                                    "import ch.fhnw.thga.Completion (complete)", NEW_LINE,
-                                    "frob i = complete $ i + i", NEW_LINE);
-
-                    String minimalBuildFileConfig = createFregeSection(
-                                    fregeBuilder.version("'3.25.84'").release("'3.25alpha'").build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr, minimalBuildFileConfig);
-                    setupDefaultFregeProjectStructure(frobCode, frobFr, "");
-
-                    BuildResult result = runGradleTask(COMPILE_FREGE_TASK_NAME);
-
-                    assertTrue(project.getTasks().getByName(COMPILE_FREGE_TASK_NAME) instanceof CompileFregeTask);
-                    assertEquals(SUCCESS, result.task(":" + COMPILE_FREGE_TASK_NAME).getOutcome());
-                    assertTrue(new File(
-                                    testProjectDir.getAbsolutePath()
-                                                    + "/build/classes/main/frege/ch/fhnw/thga/Completion.java")
-                                                                    .exists());
-                    assertTrue(new File(
-                                    testProjectDir.getAbsolutePath()
-                                                    + "/build/classes/main/frege/ch/fhnw/thga/Completion.class")
-                                                                    .exists());
-                    assertTrue(new File(testProjectDir.getAbsolutePath()
-                                    + "/build/classes/main/frege/ch/fhnw/thga/Frob.java")
-                                                    .exists());
-                    assertTrue(new File(testProjectDir.getAbsolutePath()
-                                    + "/build/classes/main/frege/ch/fhnw/thga/Frob.class")
-                                                    .exists());
-            }
-    }
-
-    @Nested
-    @TestInstance(Lifecycle.PER_CLASS)
-    @IndicativeSentencesGeneration(separator = " -> ", generator = DisplayNameGenerator.ReplaceUnderscores.class)
-    class Compile_frege_task_fails {
-            @Test
-            void given_frege_code_and_illegal_compiler_flags() throws Exception {
-                    String completionFr = "Completion.fr";
-                    String buildConfigWithIllegalCompilerFlags = createFregeSection(fregeBuilder
-                                    .version("'3.25.84'")
-                                    .release("'3.25alpha'").compilerFlags("['-make', '-bla']").build());
-                    setupDefaultFregeProjectStructure(SIMPLE_FREGE_CODE, completionFr,
-                                    buildConfigWithIllegalCompilerFlags);
-
-                    BuildResult result = runAndFailGradleTask(COMPILE_FREGE_TASK_NAME);
-
-                    assertTrue(project.getTasks().getByName(COMPILE_FREGE_TASK_NAME) instanceof CompileFregeT