Add option to list all available tags

src/main/java/com/askimed/nf/test/App.java

@@ -22,8 +22,6 @@ public class App {
 
 	public int run(String[] args) {
 
-		printHeader();
-
 		CommandLine commandLine = new CommandLine(new App());
 		commandLine.addSubcommand("clean", new CleanCommand());
 		commandLine.addSubcommand("init", new InitCommand());
@@ -38,16 +36,6 @@ public int run(String[] args) {
 
 	}
 
-	private void printHeader() {
-
-		System.out.println();
-		System.out.println(Emoji.ROCKET + AnsiText.bold(" " + App.NAME + " " + App.VERSION));
-		System.out.println("https://code.askimed.com/nf-test");
-		System.out.println("(c) 2021 - 2023 Lukas Forer and Sebastian Schoenherr");
-		System.out.println();
-
-	}
-
 	public static void main(String[] args) throws Exception {
 
 		App app = new App();

src/main/java/com/askimed/nf/test/commands/AbstractCommand.java

@@ -0,0 +1,40 @@
+package com.askimed.nf.test.commands;
+
+import java.util.concurrent.Callable;
+
+import com.askimed.nf.test.App;
+import com.askimed.nf.test.util.AnsiText;
+import com.askimed.nf.test.util.Emoji;
+
+import picocli.CommandLine.Option;
+import picocli.CommandLine.Help.Visibility;
+
+public abstract class AbstractCommand implements Callable<Integer> {
+
+	@Option(names = {
+			"--silent" }, description = "Hide header and program version", required = false, showDefaultValue = Visibility.ALWAYS)
+	private boolean silent = false;
+
+	@Override
+	public Integer call() throws Exception {
+
+		if (!silent) {
+			printHeader();
+		}
+
+		return execute();
+	}
+
+	public abstract Integer execute() throws Exception;
+
+	private void printHeader() {
+
+		System.out.println();
+		System.out.println(Emoji.ROCKET + AnsiText.bold(" " + App.NAME + " " + App.VERSION));
+		System.out.println("https://code.askimed.com/nf-test");
+		System.out.println("(c) 2021 - 2023 Lukas Forer and Sebastian Schoenherr");
+		System.out.println();
+
+	}
+
+}

src/main/java/com/askimed/nf/test/commands/CleanCommand.java

@@ -1,7 +1,6 @@
 package com.askimed.nf.test.commands;
 
 import java.io.File;
-import java.util.concurrent.Callable;
 
 import com.askimed.nf.test.config.Config;
 import com.askimed.nf.test.util.AnsiColors;
@@ -10,12 +9,12 @@
 import picocli.CommandLine.Command;
 
 @Command(name = "clean")
-public class CleanCommand implements Callable<Integer> {
+public class CleanCommand extends AbstractCommand {
 
 	public static String NF_DIRECTORY = ".nf-test";
 
 	@Override
-	public Integer call() throws Exception {
+	public Integer execute() throws Exception {
 
 		File workDir = new File(NF_DIRECTORY);
 

src/main/java/com/askimed/nf/test/commands/InitCommand.java

@@ -1,7 +1,6 @@
 package com.askimed.nf.test.commands;
 
 import java.io.File;
-import java.util.concurrent.Callable;
 
 import com.askimed.nf.test.App;
 import com.askimed.nf.test.commands.init.InitTemplates;
@@ -11,10 +10,10 @@
 import picocli.CommandLine.Command;
 
 @Command(name = "init")
-public class InitCommand implements Callable<Integer> {
+public class InitCommand extends AbstractCommand {
 
 	@Override
-	public Integer call() throws Exception {
+	public Integer execute() throws Exception {
 
 		try {
 

src/main/java/com/askimed/nf/test/commands/ListTestsCommand.java

@@ -3,19 +3,18 @@
 import java.io.File;
 import java.util.ArrayList;
 import java.util.List;
-import java.util.concurrent.Callable;
 
 import com.askimed.nf.test.config.Config;
 import com.askimed.nf.test.core.TestExecutionEngine;
 import com.askimed.nf.test.util.AnsiColors;
 
 import picocli.CommandLine.Command;
+import picocli.CommandLine.Help.Visibility;
 import picocli.CommandLine.Option;
 import picocli.CommandLine.Parameters;
-import picocli.CommandLine.Help.Visibility;
 
 @Command(name = "list")
-public class ListTestsCommand implements Callable<Integer> {
+public class ListTestsCommand extends AbstractCommand {
 
 	@Parameters(description = "list all tests")
 	private List<File> testPaths = new ArrayList<File>();
@@ -24,8 +23,12 @@ public class ListTestsCommand implements Callable<Integer> {
 			"--debug" }, description = "Show debugging infos", required = false, showDefaultValue = Visibility.ALWAYS)
 	private boolean debug = false;
 
+	@Option(names = {
+			"--tags" }, description = "Show all available tags", required = false, showDefaultValue = Visibility.ALWAYS)
+	private boolean tags = false;
+
 	@Override
-	public Integer call() throws Exception {
+	public Integer execute() throws Exception {
 
 		try {
 
@@ -65,7 +68,11 @@ public Integer call() throws Exception {
 
 			TestExecutionEngine engine = new TestExecutionEngine();
 			engine.setScripts(scripts);
-			return engine.listTests();
+			if (tags) {
+				return engine.listTags();
+			} else {
+				return engine.listTests();
+			}
 
 		} catch (Throwable e) {
 

src/main/java/com/askimed/nf/test/commands/RunTestsCommand.java

@@ -8,7 +8,6 @@
 import java.util.ArrayList;
 import java.util.List;
 import java.util.Vector;
-import java.util.concurrent.Callable;
 import java.util.function.Consumer;
 
 import com.askimed.nf.test.config.Config;
@@ -28,7 +27,7 @@
 import picocli.CommandLine.Parameters;
 
 @Command(name = "test")
-public class RunTestsCommand implements Callable<Integer> {
+public class RunTestsCommand extends AbstractCommand {
 
 	@Parameters(description = "test files")
 	private List<File> testPaths = new ArrayList<File>();
@@ -69,7 +68,8 @@ public class RunTestsCommand implements Callable<Integer> {
 	private List<String> tags = new Vector<String>();
 
 	@Override
-	public Integer call() throws Exception {
+	public Integer execute() throws Exception {
+
 		List<File> scripts = new ArrayList<File>();
 		PluginManager manager = new PluginManager(false);
 

src/main/java/com/askimed/nf/test/commands/UpdatePluginsCommand.java

@@ -1,7 +1,6 @@
 package com.askimed.nf.test.commands;
 
 import java.io.File;
-import java.util.concurrent.Callable;
 
 import com.askimed.nf.test.config.Config;
 import com.askimed.nf.test.plugins.PluginManager;
@@ -10,10 +9,10 @@
 import picocli.CommandLine.Command;
 
 @Command(name = "update-plugins")
-public class UpdatePluginsCommand implements Callable<Integer> {
+public class UpdatePluginsCommand extends AbstractCommand {
 
 	@Override
-	public Integer call() throws Exception {
+	public Integer execute() throws Exception {
 
 		File configFile = new File(Config.FILENAME);
 

src/main/java/com/askimed/nf/test/commands/VersionCommand.java

@@ -1,17 +1,15 @@
 package com.askimed.nf.test.commands;
 
-import java.util.concurrent.Callable;
-
 import com.askimed.nf.test.nextflow.NextflowCommand;
 import com.askimed.nf.test.util.AnsiColors;
 
 import picocli.CommandLine.Command;
 
 @Command(name = "version")
-public class VersionCommand implements Callable<Integer> {
+public class VersionCommand extends AbstractCommand {
 
 	@Override
-	public Integer call() throws Exception {
+	public Integer execute() throws Exception {
 
 		try {
 

src/main/java/com/askimed/nf/test/core/TestExecutionEngine.java

@@ -2,7 +2,7 @@
 
 import java.io.File;
 import java.util.List;
-import java.util.Vector;
+import java.util.*;
 
 import com.askimed.nf.test.lang.TestSuiteBuilder;
 import com.askimed.nf.test.plugins.PluginManager;
@@ -258,4 +258,38 @@ public int listTests() throws Throwable {
 
 	}
 
+	public int listTags() throws Throwable {
+
+		if (configFile != null) {
+			if (!configFile.exists()) {
+				System.out.println(
+						AnsiColors.red("Error: Test config file '" + configFile.getAbsolutePath() + "'not found"));
+				System.out.println();
+				return 1;
+			}
+		}
+
+		List<ITestSuite> testSuits = parse(tagQuery);
+
+		if (testSuits.size() == 0) {
+			System.out.println(AnsiColors.red("Error: no valid tests found."));
+			System.out.println();
+			return 1;
+		}
+
+		Set<String> tags = new HashSet<String>();
+		for (ITestSuite testSuite : testSuits) {
+			tags.addAll(testSuite.getTags());
+			for (ITest test : testSuite.getTests()) {
+				tags.addAll(test.getTags());
+			}
+		}
+
+		for (String tag : tags) {
+			System.out.println(tag);
+		}
+		return 0;
+
+	}
+
 }