[kotlin, openapi] Kooby extension method in another compilation unit fix #3230

Author: jknack

modules/jooby-openapi/src/test/java/issues/i3230/Issue3230.java

@@ -0,0 +1,47 @@
+/*
+ * Jooby https://jooby.io
+ * Apache License Version 2.0 https://jooby.io/LICENSE.txt
+ * Copyright 2014 Edgar Espina
+ */
+package issues.i3230;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import io.jooby.openapi.OpenAPIResult;
+import io.jooby.openapi.OpenAPITest;
+import kt.i3230.App3230Kt;
+
+public class Issue3230 {
+
+  @OpenAPITest(value = App3230Kt.class)
+  public void shouldSupportExtensionMethod(OpenAPIResult result) {
+    assertEquals(
+        "openapi: 3.0.1\n"
+            + "info:\n"
+            + "  title: 3230 API\n"
+            + "  description: 3230 API description\n"
+            + "  version: \"1.0\"\n"
+            + "paths:\n"
+            + "  /hello:\n"
+            + "    get:\n"
+            + "      operationId: getHello\n"
+            + "      responses:\n"
+            + "        \"200\":\n"
+            + "          description: Success\n"
+            + "          content:\n"
+            + "            application/json:\n"
+            + "              schema:\n"
+            + "                type: string\n"
+            + "  /create:\n"
+            + "    post:\n"
+            + "      operationId: postCreate\n"
+            + "      responses:\n"
+            + "        \"200\":\n"
+            + "          description: Success\n"
+            + "          content:\n"
+            + "            application/json:\n"
+            + "              schema:\n"
+            + "                type: string\n",
+        result.toYaml());
+  }
+}

modules/jooby-openapi/src/test/kotlin/kt/i3230/App3230.kt

@@ -0,0 +1,23 @@
+/*
+ * Jooby https://jooby.io
+ * Apache License Version 2.0 https://jooby.io/LICENSE.txt
+ * Copyright 2014 Edgar Espina
+ */
+package kt.i3230
+
+import io.jooby.kt.Kooby
+import io.jooby.kt.runApp
+
+// an extension method that creates some routes
+fun Kooby.helloRoute() {
+  get("/hello") { "world" }
+
+  post("/create") { "world" }
+}
+
+fun main(args: Array<String>) {
+  runApp(args) {
+    // calling the extension method
+    helloRoute()
+  }
+}