KTOR-4875 Fixed respecting connectors port in testApplication (#3169)

Author: rsinukov1

ktor-server/ktor-server-test-host/jvmAndNix/src/io/ktor/server/testing/TestApplicationEngine.kt

@@ -119,16 +119,19 @@ class TestApplicationEngine(
     }
 
     override suspend fun resolvedConnectors(): List<EngineConnectorConfig> {
+        if (environment.connectors.isNotEmpty()) {
+            return environment.connectors
+        }
         return listOf(
             object : EngineConnectorConfig {
                 override val type: ConnectorType = ConnectorType.HTTP
-                override val host: String = environment.connectors.firstOrNull()?.host ?: "localhost"
-                override val port: Int = environment.connectors.firstOrNull()?.port ?: 80
+                override val host: String = "localhost"
+                override val port: Int = 80
             },
             object : EngineConnectorConfig {
                 override val type: ConnectorType = ConnectorType.HTTPS
-                override val host: String = environment.connectors.firstOrNull()?.host ?: "localhost"
-                override val port: Int = environment.connectors.firstOrNull()?.port ?: 443
+                override val host: String = "localhost"
+                override val port: Int = 443
             }
         )
     }

ktor-server/ktor-server-test-host/jvmAndNix/src/io/ktor/server/testing/client/TestHttpClientEngine.kt

@@ -55,7 +55,7 @@ public class TestHttpClientEngine(override val config: TestHttpClientConfig) : H
         }
 
         val testServerCall = with(data) {
-            runRequest(method, url.fullPath, headers, body, url.protocol)
+            runRequest(method, url, headers, body, url.protocol)
         }
 
         return with(testServerCall.response) {
@@ -65,13 +65,14 @@ public class TestHttpClientEngine(override val config: TestHttpClientConfig) : H
 
     private suspend fun runRequest(
         method: HttpMethod,
-        url: String,
+        url: Url,
         headers: Headers,
         content: OutgoingContent,
         protocol: URLProtocol
     ): TestApplicationCall {
         return app.handleRequestNonBlocking {
-            this.uri = url
+            this.uri = url.fullPath
+            this.port = url.port
             this.method = method
             appendRequestHeaders(headers, content)
             this.protocol = protocol.name

ktor-server/ktor-server-test-host/jvmAndNix/test/TestApplicationTest.kt

@@ -12,6 +12,7 @@ import io.ktor.http.*
 import io.ktor.http.content.*
 import io.ktor.server.application.*
 import io.ktor.server.config.*
+import io.ktor.server.engine.*
 import io.ktor.server.plugins.*
 import io.ktor.server.request.*
 import io.ktor.server.response.*
@@ -279,4 +280,43 @@ class TestApplicationTest {
         val response = client.get("/boom")
         assertEquals(HttpStatusCode.InternalServerError, response.status)
     }
+
+    @Test
+    fun testConnectors(): Unit = testApplication {
+        environment {
+            connector {
+                port = 8080
+            }
+            connector {
+                port = 8081
+            }
+
+            module {
+                routing {
+                    port(8080) {
+                        get {
+                            call.respond("8080")
+                        }
+                    }
+                    port(8081) {
+                        get {
+                            call.respond("8081")
+                        }
+                    }
+                }
+            }
+        }
+
+        val response8080 = client.get {
+            host = "0.0.0.0"
+            port = 8080
+        }
+        assertEquals("8080", response8080.bodyAsText())
+
+        val response8081 = client.get {
+            host = "0.0.0.0"
+            port = 8081
+        }
+        assertEquals("8081", response8081.bodyAsText())
+    }
 }