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package ch.fhnw.thga.gradleplugins;
import static ch.fhnw.thga.gradleplugins.GradleBuildFileConversionTest.createPluginsSection;
import static ch.fhnw.thga.gradleplugins.FregeExtension.DEFAULT_DOWNLOAD_DIRECTORY;
import static ch.fhnw.thga.gradleplugins.FregePlugin.*;
import static org.gradle.testkit.runner.TaskOutcome.SUCCESS;
import static org.gradle.testkit.runner.TaskOutcome.FAILED;
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.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;
@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, "\n" + content, true);
}
private static String createFregeSection(FregeDTO fregeDTO) {
return String.format("%s {\n %s\n}", FREGE_EXTENSION_NAME, fregeDTO.toBuildFile());
}
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_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());
}
}
@Nested
@TestInstance(Lifecycle.PER_CLASS)
@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(
fregeBuilder.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(
fregeBuilder.version("'3.25.84'").release("'3.25alpha'")
.mainModule("'ch.fhnw.thga.Completion'").build());
setupDefaultFregeProjectStructure(SIMPLE_FREGE_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(
fregeBuilder.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"));
}
}
}
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