Add config loading tests

src/main/kotlin/starter/KotlinStarter.kt

@@ -1,13 +1,10 @@
 package starter
 
 import org.koin.core.context.startKoin
-import starter.modules.mainModule
-import starter.modules.pebbleModule
-import starter.modules.routesModule
-import starter.modules.templateModule
+import starter.modules.*
 
 fun main() {
     startKoin {
-        modules(mainModule, pebbleModule, templateModule, routesModule)
+        modules(mainModule, pebbleModule, templateModule, configModule, routesModule)
     }
 }

src/main/kotlin/starter/config/Config.kt

@@ -1,7 +1,6 @@
 package starter.config
 
 import com.electronwill.nightconfig.core.UnmodifiableConfig
-import com.electronwill.nightconfig.core.file.FileConfig
 import starter.*
 import com.electronwill.nightconfig.core.Config as NightConfig
 
@@ -10,17 +9,19 @@ data class StarterConfig(
     val inputs: List<Input>,
 )
 
-class Config {
+class Config(private val cfg: NightConfig) {
 
     @Suppress("UNCHECKED_CAST")
-    private fun FileConfig.configMap(key: String) = this.get<NightConfig>(key).valueMap() as Map<String, NightConfig>
+    private fun NightConfig.configMap(key: String) = this.get<NightConfig>(key)
+        ?.valueMap() as Map<String, NightConfig>?
+        ?: emptyMap()
 
     fun load(): StarterConfig {
-        val cfg = FileConfig.of("config.toml")
-        cfg.load()
 
         @Suppress("UNCHECKED_CAST")
-        val versions = cfg.get<UnmodifiableConfig>("versions").valueMap() as Map<String, String>
+        val versions = cfg.get<UnmodifiableConfig>("versions")
+            ?.valueMap() as Map<String, String>?
+            ?: emptyMap()
 
         val repositories = cfg.configMap("repositories")
             .map { (name, values) ->

src/main/kotlin/starter/modules/ConfigModule.kt

@@ -0,0 +1,11 @@
+package starter.modules
+
+import com.electronwill.nightconfig.core.file.FileConfig
+import org.koin.dsl.module
+import starter.config.Config
+import com.electronwill.nightconfig.core.Config as NightConfig
+
+val configModule = module {
+    single<NightConfig> { FileConfig.of("config.toml").apply { load() } }
+    single { Config(get()).load() }
+}

src/main/kotlin/starter/modules/MainModule.kt

@@ -17,7 +17,6 @@ val mainModule = module {
         get<RoutingHttpHandler>().asServer(SunHttp(7000)).start()
     } onClose { it?.stop() }
 
-    single { Config().load() }
     single { LoggerFactory.getLogger("Starter") }
     single { Views(get(), get()) }
     single { ProjectZip(getAll()) }