fix root route appending a trailing slash (#30)

kompendium-core/src/main/kotlin/org/leafygreens/kompendium/util/Helpers.kt

@@ -49,7 +49,7 @@ object Helpers {
         // dumb ass workaround to this object being internal to ktor
         "TrailingSlashRouteSelector" -> {
           logger.info("Found trailing slash route selector")
-          val newTail = "$tail/"
+          val newTail = tail.ifBlank { "/" }
           parent?.calculatePath(newTail) ?: run {
             logger.info("No parent found, returning current path")
             newTail

kompendium-core/src/test/kotlin/org/leafygreens/kompendium/KompendiumTest.kt

@@ -228,6 +228,22 @@ internal class KompendiumTest {
     }
   }
 
+  @Test
+  fun `Nested under root module does not append trailing slash`() {
+    withTestApplication({
+      configModule()
+      docs()
+      nestedUnderRootModule()
+    }) {
+      // do
+      val json = handleRequest(HttpMethod.Get, "/openapi.json").response.content
+
+      // expect
+      val expected = TestData.getFileSnapshot("nested_under_root.json").trim()
+      assertEquals(expected, json, "The received json spec should match the expected content")
+    }
+  }
+
   @Test
   fun `Can notarize a trailing slash route`() {
     withTestApplication({
@@ -328,7 +344,8 @@ internal class KompendiumTest {
   private companion object {
     val testGetResponse = ResponseInfo(KompendiumHttpCodes.OK, "A Successful Endeavor")
     val testPostResponse = ResponseInfo(KompendiumHttpCodes.CREATED, "A Successful Endeavor")
-    val testDeleteResponse = ResponseInfo(KompendiumHttpCodes.NO_CONTENT, "A Successful Endeavor", mediaTypes = emptyList())
+    val testDeleteResponse =
+      ResponseInfo(KompendiumHttpCodes.NO_CONTENT, "A Successful Endeavor", mediaTypes = emptyList())
     val testRequest = RequestInfo("A Test request")
     val testGetInfo = MethodInfo("Another get test", "testing more", testGetResponse)
     val testPostInfo = MethodInfo("Test post endpoint", "Post your tests here!", testPostResponse, testRequest)
@@ -415,6 +432,18 @@ internal class KompendiumTest {
     }
   }
 
+  private fun Application.nestedUnderRootModule() {
+    routing {
+      route("/") {
+        route("/testerino") {
+          notarizedGet<TestParams, TestResponse>(testGetInfo) {
+            call.respondText { "🤔🔥" }
+          }
+        }
+      }
+    }
+  }
+
   private fun Application.trailingSlash() {
     routing {
       route("/test") {

kompendium-core/src/test/resources/nested_under_root.json

@@ -0,0 +1,86 @@
+{
+  "openapi" : "3.0.3",
+  "info" : {
+    "title" : "Test API",
+    "version" : "1.33.7",
+    "description" : "An amazing, fully-ish \uD83D\uDE09 generated API spec",
+    "termsOfService" : "https://example.com",
+    "contact" : {
+      "name" : "Homer Simpson",
+      "url" : "https://gph.is/1NPUDiM",
+      "email" : "chunkylover53@aol.com"
+    },
+    "license" : {
+      "name" : "MIT",
+      "url" : "https://github.com/lg-backbone/kompendium/blob/main/LICENSE"
+    }
+  },
+  "servers" : [ {
+    "url" : "https://myawesomeapi.com",
+    "description" : "Production instance of my API"
+  }, {
+    "url" : "https://staging.myawesomeapi.com",
+    "description" : "Where the fun stuff happens"
+  } ],
+  "paths" : {
+    "/testerino" : {
+      "get" : {
+        "tags" : [ ],
+        "summary" : "Another get test",
+        "description" : "testing more",
+        "parameters" : [ {
+          "name" : "a",
+          "in" : "path",
+          "schema" : {
+            "$ref" : "#/components/schemas/String"
+          },
+          "required" : true,
+          "deprecated" : false
+        }, {
+          "name" : "aa",
+          "in" : "query",
+          "schema" : {
+            "$ref" : "#/components/schemas/Int"
+          },
+          "required" : true,
+          "deprecated" : false
+        } ],
+        "responses" : {
+          "200" : {
+            "description" : "A Successful Endeavor",
+            "content" : {
+              "application/json" : {
+                "schema" : {
+                  "$ref" : "#/components/schemas/TestResponse"
+                }
+              }
+            }
+          }
+        },
+        "deprecated" : false
+      }
+    }
+  },
+  "components" : {
+    "schemas" : {
+      "String" : {
+        "type" : "string"
+      },
+      "TestResponse" : {
+        "properties" : {
+          "c" : {
+            "$ref" : "#/components/schemas/String"
+          }
+        },
+        "type" : "object"
+      },
+      "Int" : {
+        "format" : "int32",
+        "type" : "integer"
+      }
+    },
+    "securitySchemes" : { }
+  },
+  "security" : [ ],
+  "tags" : [ ]
+}