Ktor server testing. 0 Ktor Server Test Host » 2.
Ktor server testing Routing is the core Ktor plugin for handling incoming requests in a server application. Ensure you have selected the necessary Ktor server and client engines like 'ktor-client-core', 'ktor-client-java', or 'ktor-client-android'. A configured instance of a test application running locally. while built-in testing and debugging tools simplify the development process. Testing withTestApplication and withApplication have been removed. See also. getLogger(HttpClientTest::class. For more details about the model change, see issue KTOR-3857 on YouTrack. Specify a URL as a string or configure URL Engine. ; kweet - A messaging application that uses FreeMarker templates and the Locations plugin. What are we going to test? This is the key question Learn how to create, run and test a server application with Ktor. Learn how to build a To test a server Ktor application, do the following: Use testApplication function to set up a configured instance of a test application running locally. Use the HttpClient instance inside a Ktor is designed to allow the creation of applications that are easily testable. Ktor handles JWTs passed in the Authorization header using the For the full example, see embedded-server. This information can be verified and trusted since it is signed using a shared secret (with the HS256 algorithm) or a public/private key pair (for example, RS256). Report a problem. java. If you’re new to Ktor, create your first application today! 基于Ktor实现服务器的代码案例：JWT、HTML(DSL)、RateLimit、WebSocket、MySql、Redis - SheTieJun/ktor-server-sample JSON Web Token (JWT) is an open standard that defines a way for securely transmitting information between parties as a JSON object. Inside the webSocket block, you define the handler for the WebSocket session, which is Validation body. Currently, running a Ktor server under Kotlin/Native has the following limitations: a server should be created using embeddedServer. kt file. It exposes a suspending API that uses java. test: runs-on: ubuntu-latest # Use the latest Ubuntu environment for this job. Ktor exposes API for developing custom plugins that implement common functionalities and can be reused in multiple applications. Preparing the Forest: Configuring the Server. Add dependencies. The server then enters an infinite loop in waiting to receive a new task. The class EmbeddedServer is introduced and used to replace ApplicationEngine as a return type of the embeddedServer() function. Besides modules to load, a configuration file can include various server In addition to HTTP/WebSocket handling for the server and client, Ktor supports TCP and UDP raw sockets. WinHttp. Mocking. Use the Ktor HTTP client instance inside a test application to make a request to your server, receive a response, and make assertions. Ktor is a framework for building asynchronous servers and clients in connected systems using the powerful Kotlin programming language. only the CIO engine is supported. Deployment. A minor release, adding support for YAML configuration and various other improvements and bug fixes. The functionality can be used by adding an additional test dependency to the build. Create a cross-platform IntelliJ IDEA will create a test class containing tests requests for the selected routes. server. conf or application. The deployment process for a server Ktor application depends on the following specifics: Ktor uses HOCON (Human-Optimized Config Object Notation) format in the external configuration file. io. Ktor allows you to configure various server parameters, such as a host address and port, modules to load, and so on. ktor namespace. How can I debug it? Ktor provides a tracing mechanism to help troubleshooting routing decisions. Sometimes, however, client implementations are done in parallel with server-side ones. See changelog on GitHub. ; fullstack-mpp - An example of using Ktor as a client and server in a Kotlin Multiplatform project. Create a client application Create a client application with Ktor. call. Today, we’ll explore Ktor, a toolkit for building server applications on JVM with Kotlin. Ask Question Asked 2 years ago. . Ktor excels in For the same, Ktor provides a module function which let us test the apis without starting the actual server but to test with test engine. Windows target is not supported. Some tests saw over 90% improvement, and we’re working on even more enhancements. Configuration file. HTTPS without a reverse proxy is not supported. Share this article: The link has been Copied to clipboard! Written by. ; httpbin - HttpBin application implementing (large parts of) httpbin(1) HTTP request & response service. The withTestApplication and withApplication Ktor is a framework for quickly creating web applications in Kotlin with minimal effort. Those tools are going To test a server Ktor application, do the following: Starts a test application engine, passes it to the function, and stops it. Support for server-sent events (SSE) In Ktor 3. 3 IntelliJ IDEA version, the Ktor plugin lets you generate OpenAPI documentation for server-side Ktor applications using the dedicated intention action. License: Apache 2. First with Kotlin / JS, now fully mobile with Kotlin / Native. For EngineMain, Ktor loads its configuration from a configuration file that uses the HOCON or YAML format. Sample Ktor app with test using mock external services - tyknkd/ktor-sample-mock-external In my last article I've explained how to test route definition using a proposed architecture in a Ktor server, and also the tools you would need for that. Ktor Server Testing. 0, Ktor provides a new API for creating custom plugins. aar android apache api application arm assets build build-system bundle client clojure cloud config cran data database eclipse example extension framework github gradle groovy ios javascript kotlin library logging maven mobile module npm osgi persistence plugin resources rlang sdk server service spring sql starter testing tools ui war web webapp Our IO benchmark tests, based on real-world Ktor applications, show impressive results. The main way of making HTTP requests is the request function that can take a URL as a parameter. Discover ktor-server-tests-jvm in the io. To this end, the Ktor Client provides great testing support through the use of a mock engine. class TestApplication: ClientProvider. Let’s start importing the ktor-server-core, ktor Ktor server testing library: helpful set of tools to make tests against Ktor server application. Make sure to call TestApplication. Introduction to GitHub Actions Framework for quickly creating connected applications in Kotlin with minimal effort - ktorio/ktor Ktor is a server-side framework that helps us to build applications and microservices in Kotlin. They help identify issues that might not show up in unit tests. aar android apache api application arm assets build build-system bundle client clojure cloud config cran data database eclipse example extension framework github gradle groovy ios javascript kotlin library logging maven mobile module npm osgi persistence plugin resources rlang sdk server service spring sql starter testing tools ui war web webapp aar android apache api application arm assets build build-system bundle client clojure cloud config cran data database eclipse example extension framework github gradle groovy ios javascript kotlin library logging maven mobile module npm osgi persistence plugin resources rlang sdk server service spring sql starter testing tools ui war web webapp Use unit tests to validate routing. Gradle wrapper `gradlew` generated by wizard is not executable by default Server "KeyStoreException: JKS not found" exception on Android when configuring secure connection # Job for testing the Ktor application. That not be of the like of unit testing purists, but i just testst many things with Test client ignores socket timeout 2. Note that IntelliJ IDEA generates Ktor tests using the dedicated code templates aar android apache api application arm assets build build-system bundle client clojure cloud config cran data database eclipse example extension framework github gradle groovy ios javascript jenkins kotlin library logging maven mobile module npm osgi plugin resources rlang sdk server service spring sql starter testing tools ui war web webapp For more informations about the configuration process, you can give a look at the first episode of the series: Structuring a Ktor project Testing. You can do this tutorial independently, however, we strongly recommend that you complete the This section describes project setup using the Ktor plugin for Intellij IDEA Ultimate. Redirect dependencies from ktor-server-test-base ; CIO: EmbeddedServer. Otherwise, from the main menu, select File | New | Project. If your server is Ktor is a framework for quickly creating web applications in Kotlin with minimal effort. name) companion object { @BeforeClass @JvmStatic fun setup() { // ????? The StatusPages plugin allows Ktor applications to respond appropriately to any failure state based on a thrown exception or status code. To create a new Ktor project, open IntelliJ IDEA, and follow the steps below: On the Welcome screen, click New Project. Check the Tracing routes section. Testing Frameworks & Tools. When the client makes a request to a specific URL (for example, /hello), the routing mechanism allows us to define how we want this request to be served. * import io. Members. For testing, it is necessary to cover two different situations: unit tests and integration tests (in this case I refer to integration tests that involve the server). In this tutorial, we’re going to explore how to create a standalone server application using Ktor. It provides easy way to test an application without mocking too much stuff, and still achieve good performance while validating application calls. Java. Basically, our container self-manages the postgres database, and every time we request a database, it randomly creates a new database and a new user, giving us back the config we need to let Ktor know how to connect to it. Modified 2 years, 6 months ago. This is the second tutorial of the Get started with Ktor Server guide. A principal is an entity that can be authenticated: a user, a computer, a service, etc. On the right pane, you can specify the Learn how to use Kotlin and Ktor to build a single-page application (SPA) in which RESTful services link to database repositories. In code. Configuration in a file Edit page Last modified: 13 December 2024. Viewed 1k times 4 . For example, you can intercept the Introduction. Now it is time for this tutorial’s third and final part on creating a reactive REST service. In the New Project wizard, choose Ktor from the list on the left. Learn how to create, run and test a client application with Ktor. Testing Ktor Configure an engine. stop after your tests. class ApplicationTestBuilder: TestApplicationBuilder, ClientProvider. Ktor Server Core 332 usages. space. Js. . jvm Ktor supports Kotlin/Native and allows you to run a server without an additional runtime or virtual machine. This way In this article, we are going to learn how to build a server with the Ktor framework. 📷 Blog taking application utilizing Ktor REST-API and following modern practices: Kotlin, Coroutines, Flows, Channels, Room, Work Manager, Navigation Component One think that I like of using Ktor for server and client is that I can use the client for the server testing. You can learn how to test a Ktor server from Testing. contentnegotiation Ktor applications can be hosted in a special test environment, which emulates a web server to some extent without actually doing any networking. This ktor-server-test-host / io. Setting up a Ktor Application The MockEngine is a great fit for this, because the tests still use the real Ktor HttpClientEngine, but just with predefined responses. test Application. For EngineMain, Ktor loads its configuration from a configuration file that uses Kotlin Server and Client Framework for microservices, HTTP APIs, and RESTful services. EngineMain starts a server with the selected engine and loads the application modules specified in the external configuration file placed in the resources directory: application. A typical request/response pipeline in Ktor looks like the following: It starts with a request, which is routed to a specific handler, processed by our application logic, and finally responded to. Ktor deployment specifics. testing / TestApplication. WebSockets. Server plugins. Those tools are going to be used in this Introduction. Java Specifications. fun TestApplication (block: TestApplicationBuilder. 6 min read. For example, the basic, digest, and form providers authenticate UserIdPrincipal while the jwt provider verifies JWTPrincipal. Ktor allows you to overcome this limitation by using Auto-reload, which reloads application classes on code changes and provides a fast feedback loop. ️ (for Apache5). createUserRoute with tests:. ktor", "ktor-client-mock", ktorVersion) SERIES: Building a backend with Ktor. import io. 0 version, see these instructions. In the first part, we discussed the benefits of applying reactivity in our services and Restarting a server during development might take some time. client Configure SSL in Ktor. stop always blocks for shutdownGracePeriod ; SSE: the plugin doesn't follow the spec when multiline data is sent ; Infinite creation of How can I use the same test server configuration for every Ktor test? Ask Question Asked 2 years, 6 months ago. Kotlin Multiplatform enthusiast, working with it since 2020. To run your Ktor server, simply execute the main function in the Application. August 11, 2022. Link copied to clipboard. Part 1: Structuring a Ktor project; Part 2: How to persist Ktor logs Part 3: How to use an in-memory database for testing on Ktor Part 4: How to handle database migrations with Liquibase on Ktor Part 5 Generate API documentation from Swagger on Ktor; Part 6: How to schedule jobs with Quartz on Ktor Part 7: Moving from mobile Running Auto-reload Testing in Ktor Server. Ktor is a framework for quickly creating web applications in Kotlin with minimal effort. chat - A Chat application written using WebSockets and Sessions. September 6, 2022. JVM Languages. Apache. Using Ktor A bit of a mouthful, but not a lot is going on here. constructor In this example, the server accepts WebSocket requests to ws://localhost:8080/echo when a default configuration is used. For testing functionality related to the request-response handling Ktor provides an testApplication - function that allows to start the server with a test configuration. Creating Fat JARs WAR GraalVM Docker Google App Engine Heroku. A patch release with various bug fixes in Ktor client and server. In Ktor, various authentication providers might use different principals. client. nio under the hood. yaml. After setting up the client, you can make HTTP requests. 2. To Ktor applications can be hosted in a special test environment, which emulates a web server to some extent without actually doing any networking. ktor-client-apache. client. With Ktor, you can easily create HTTP clients and servers, making it an excellent choice for Android developers looking for a flexible networking solution. ()-> Unit): TestApplication. Link copied to clipboard aar android apache api application arm assets build build-system bundle client clojure cloud config cran data database eclipse example extension framework github gradle groovy ios javascript kotlin library logging maven mobile module npm osgi persistence plugin resources rlang sdk server service spring sql starter testing tools ui war web webapp Configuration in a file. Basically, it allows us to intercept HTTP calls and return mock responses. common. OkHttp. Developers have a great foundation to construct high-performance server-side apps thanks to Ktor, a versatile and lightweight Kotlin framework for bui. Core Utilities. Running Auto-reload Testing in Ktor Server. is — can i make different scopes to use one controller implementation in prodaction with real DAO and with mock in test module? I can use only Link copied to clipboard. Not sure if this is a limitation of my understanding of the Ktor testing framework, Kotlin or both, but I'd like to use the same Ktor server configuration for every one of my tests. If you prefer manual setup, Use mock servers for testing if API modifications are in restricted environments. It facilitates developing a standalone application with embedded servers. 0 Ktor is a framework for quickly creating web applications in Kotlin with minimal effort. 3. Test Application. testApplication: Creates a test environment for your Ktor server. Server: ktor-server-core/3. class DogsRouteTest {} Following is the test case for GET all dogs route. This API allows you to intercept different pipeline phases to add custom logic to request/response processing. Manual Setup. ️. I have an ktor application with structure like that: Main logic incapsulated in controllers, which have interfaces. The configuration depends on the way you used to create a server - embeddedServer or EngineMain. It uses the Exposed SQL library and allows you to fake repositories for testing. HTTP/2. Configuration in a file. Kotlin Server and Client Framework for microservices, HTTP APIs, and RESTful services Ktor is built from the ground up using Kotlin and Link copied to clipboard. Step 5: Running the Server. plugins. Web Assets. The Routing plugin can be installed in the following way: ktor-server-test-host / io. assertEquals: Asserts that the response matches the expected output. Integrating The Integrations # Now, in an effort to hide as much boilerplate away, let’s This blog will cover all the key aspects of setting up and using a Ktor server, including its architecture, application entry point, routing, dependency injection, and more. Note that Routing. kts file. module function, which configures the routes. Inside this function, you can configure various request parameters: Specify an HTTP method, such as GET, POST, PUT, DELETE, HEAD, OPTION, or PATCH. Create a cross-platform mobile application This code sets up the Ktor server using the Netty engine on port 8080 and associates it with the Application. Aleksander Jaworski. 1. Home » io. In this section, you will Your adventure through the forest of API testing is complete. Darwin. In general, this API doesn't require an understanding of internal Ktor concepts, such as pipelines, phases, and so on. For simplicity, we’ll also be using it to mock our server. Properties. Jetty. ktor » ktor-server-core Apache. A dependency for an engine (for example, ktor-server-netty). Dockerizing your applications. ktor-server-test-host / io. Now that we have a grasp on testing types, let’s focus on Ktor. End-to-End Tests: These tests simulate real user scenarios. 2. Install Routing. For guidance about migrating your Ktor project to the new 2. To use StatusPages, you need to include the ktor-server-status-pages artifact in the build script: Integration Tests: These tests check how different parts of your application work together. Last Release on Mar 27, 2025 Assuming you, like us, are only maintaining the client-side of the web socket, you need to add ktor-server-websockets and ktor-server-host-test to your gradle. Constructors. We’ll create a Ktor API to be tested, and we won’t use any database to focus on the tests. You can do this from your IDE or by using the command line. Android Packages. The code below demonstrates how to In this tutorial, we’ll learn a way to write tests for Ktor controllers. Ktor Server Core. Sockets use an experimental API that is expected to evolve in the upcoming updates with potentially breaking changes. Introduction of EmbeddedServer. testing / ApplicationTestBuilder. By setting up your base Every Ktor application requires at least the following dependencies: ktor-server-core: contains core Ktor functionality. 0, we added the initial support for server-sent events (SSE) both for the server and the client. Android. gradle. 0 Ktor Server Test Host » 2. Creates an instance of TestApplication configured with the builder block. Moreover, with the latest 2022. Application Setup. Explore metadata, contributors, the Maven POM file, and more. Ktor was designed from the ground up to take advantage of Kotlin’s features, including coroutines, to build efficient and flexible web applications. It provides an easy way to test an application without mocking too How can I test the latest commits on main? You can get Ktor nightly builds from jetbrains. 10 Documentation Restructuring: Getting started with Ktor Server Generator. As an adventurer in the world of code, testing your Ktor APIs with Koin and MockK can be both challenging and rewarding. Instead, you have access to Ktor is a framework for quickly creating web applications in Kotlin with minimal effort. A builder for a test that uses TestApplication. In this file, you can configure things like the port to listen to, or the modules to be loaded. As stated in Ktor’s online documentation, MockEngine provides an HttpClientEngine for writing tests without network. 0, Ktor provides a new simplified API for creating custom plugins. Upon receiving a new task, the server stores it in the repository and sends a copy to all clients, including the current one. Specifying SSL settings in Ktor depends on the way used to configure a Ktor server: by using a configuration file or in code using the embeddedServer function. Learn how routing and requests work in Ktor by creating a Task Manager application. 2 My route is not being executed. 0. And of course, Ktor infrastructure itself is well tested with unit, integration, and stress tests. This article will cover how to create a Ktor project using IntelliJ Ultimate and without it, build a basic server that returns a "Hello World" as a response, how to serve static files, and finally, an HTTP API that performs CRUD operations. In my last article I've explained how to test route definition using a proposed architecture in a Ktor server, and also the tools you would need for that. get: Sends an HTTP GET request to the server. Ktor, with its performance efficiency and ease of use in handling HTTP tasks To understand how the validate() function works, we need to introduce two terms:. They check the entire application flow from start to finish. ktor » ktor-server-test-host-jvm » 2. Logging Frameworks. For different platforms, Ktor provides platform-specific artifacts with suffixes such as -jvm, for example, ktor-server-core-jvm or ktor-server-netty-jvm. testing. A patch release that includes bug fixes in Routing, Testing engine and Ktor client. In this section, we'll take a look at how to specify various engine-specific options. To test this functionality, you'll create a new page that extends the functionality in Starting with v2. ktor. Prerequisites. CIO. Ktor Client. We create a new class under the test folder under our main folder as DogsRouteTest. You pack up your tools, knowing that your tests have ensured the paths are clear and functioning as expected. Modified 2 years ago. Use testApplicaiton from the ktor To simplify the deployment process of server Ktor applications, you can use the Ktor plugin for Gradle, which provides the following capabilities: Building fat JARs. Here is an example of how you can cover the Route. Application Test Builder. JSON Libraries. The embeddedServer function allows you to pass engine-specific options using the configure parameter. As an experienced Java developer, you’re likely familiar with robust, full-featured web frameworks, like Spring Boot. Also, we can use this idea to generate a Bad Request response when the id parameter (for find, update, or delete) is not a valid number. Let’s Get Started: What You Need Starting with v2. 0: kotlin library logging maven mobile module npm osgi plugin resources rlang sdk server service spring sql starter testing tools ui war web webapp KTor works nice with unit tests but how can I start my ktor server for integration tests? This is how my test looks like: @ExperimentalCoroutinesApi class HttpClientTest { private val logger = LoggerFactory. This format is similar to JSON, but is optimized to be read and written by humans, and supports additional features like environment variable substitution. First, we add the Gradle dependency: testImplementation("io. eyrwy lgblnv lyh uxiihxe knjcpy rxtty cjso jjabssd xfrx xvqimd tbhqgxtm skcyz knhc jjnercyg egtnu