add test-library and ktlint

src/main/kotlin/de/hoennig/gittally/GitTallyApplication.kt

@@ -1,22 +1,32 @@
 package de.hoennig.gittally
 
 import org.springframework.boot.CommandLineRunner
+import org.springframework.boot.ExitCodeGenerator
+import org.springframework.boot.SpringApplication
 import org.springframework.boot.autoconfigure.SpringBootApplication
 import org.springframework.boot.runApplication
+import org.springframework.stereotype.Component
 import picocli.CommandLine
 import picocli.CommandLine.IFactory
 import kotlin.system.exitProcess
 
 @SpringBootApplication
-class GitTallyApplication(
+class GitTallyApplication
+
+@Component
+class CliRunner(
     private val factory: IFactory,
     private val rootCommand: GitTallyCommand,
-) : CommandLineRunner {
+) : CommandLineRunner, ExitCodeGenerator {
+    private var exitCode = 0
+
     override fun run(vararg args: String) {
-        exitProcess(CommandLine(rootCommand, factory).execute(*args))
+        exitCode = CommandLine(rootCommand, factory).execute(*args)
     }
+
+    override fun getExitCode() = exitCode
 }
 
 fun main(args: Array<String>) {
-    runApplication<GitTallyApplication>(*args)
+    exitProcess(SpringApplication.exit(runApplication<GitTallyApplication>(*args)))
 }

src/main/kotlin/de/hoennig/gittally/commands/ConfigPrintCommand.kt

@@ -11,7 +11,6 @@ import picocli.CommandLine.Option
     mixinStandardHelpOptions = true,
 )
 class ConfigPrintCommand : Runnable {
-
     @Option(names = ["--full"], description = ["Include all defaults"])
     var full: Boolean = false
 

src/test/kotlin/de/hoennig/gittally/ApplicationContextTest.kt

@@ -0,0 +1,36 @@
+package de.hoennig.gittally
+
+import de.hoennig.gittally.commands.ConfigPrintCommand
+import de.hoennig.gittally.commands.InitCommand
+import de.hoennig.gittally.commands.ServerCommand
+import io.kotest.core.spec.style.FunSpec
+import io.kotest.matchers.shouldNotBe
+import org.springframework.beans.factory.annotation.Autowired
+import org.springframework.boot.test.context.SpringBootTest
+
+@SpringBootTest
+class ApplicationContextTest : FunSpec() {
+    @Autowired
+    lateinit var rootCommand: GitTallyCommand
+
+    @Autowired
+    lateinit var initCommand: InitCommand
+
+    @Autowired
+    lateinit var serverCommand: ServerCommand
+
+    @Autowired
+    lateinit var configPrintCommand: ConfigPrintCommand
+
+    init {
+        test("application context loads") {
+            rootCommand shouldNotBe null
+        }
+
+        test("all subcommands are wired") {
+            initCommand shouldNotBe null
+            serverCommand shouldNotBe null
+            configPrintCommand shouldNotBe null
+        }
+    }
+}

src/test/kotlin/de/hoennig/gittally/KotestProjectConfig.kt

@@ -0,0 +1,8 @@
+package de.hoennig.gittally
+
+import io.kotest.core.config.AbstractProjectConfig
+import io.kotest.extensions.spring.SpringExtension
+
+object KotestProjectConfig : AbstractProjectConfig() {
+    override fun extensions() = listOf(SpringExtension)
+}