How to use Testcontainers with NET Unit Tests The .NET Tools Blog

You’ll notice the code is almost identical to the code in the previous sample. Now, let’s modify our test class to use the IClassFixture interface. XUnit has a generic interface called IClassFixture, which allows us to define dependencies across all tests within a test class. We’ll need a Fixture, a setup class for shared resources across tests to accomplish our goal.

After compilation, the code can be executed over and over by the .Net platform very quickly. In the world of web and application development, there are many frameworks and languages that developers can choose from. The framework I will be discussing in this blog post is ASP.NET and ASP.NET Core. The ASP.NET Core hosting model does not directly listen for requests; rather it relies on an HTTP server implementation to forward the request to the application. The forwarded request is wrapped as a set of feature interfaces that the application then composes into an HttpContext. ASP.NET Core includes a managed cross-platform web server, called Kestrel, that you would typically run behind a production web server like IIS or nginx.

Common Language Runtime

From here, we can use that same image to create a container using ContainerBuilder, providing vital information like port bindings, environment variables, and our wait strategy. Once we’ve set up our test class, we can execute our test similarly to our previous examples. While we don’t recommend this approach for .NET developers, there are situations where you have a custom container and would like to test your application within the context of Docker.

• Mocking is fast but typically limited by a developer’s understanding of the underlying technology.
• Next add the TinyIoC NuGet package to the Web API project you just created in Visual Studio.
• IoC is a design pattern that enables you to decouple components, substitute dependency implementations, and facilitate testing.
• There are plenty of good reasons to use ASP.NET when developing a website or an application.
• The first true WYSIWYG, HTML5-based Web editor and reporting template designer.
• While containerization has undoubtedly eased the pain of dependencies, creating containers is typically command-line (CLI) based.

So far, so good, but what about using these strategies with an ASP.NET Core application? Create a new API controller and replace the generated source code with the following code listing. The complete source code of the Program.cs file is given below for your reference. The IMyService interface contains the declaration of the method named MyMethod. Alternatively, you can install the TinyIoC package via the NuGet Package Manager console by entering the line shown below.

Build web UI and web APIs using ASP.NET Core MVC¶

To use the code examples provided in this article, you should have Visual Studio 2022 installed in your system. If you don’t already have a copy, you can download Visual Studio 2022 here. Short for Active Server Page, an ASP page is a dynamically created web page that ends with a .ASP extension that utilizes ActiveX scripting, usually VBScript or JScript code. The .aspx extension is used for Web pages that use Microsoft’s ASP.NET.

The benefits of a smaller app surface area include tighter security, reduced servicing, improved performance, and decreased costs in a pay-for-what-you-use model. The first true WYSIWYG, HTML5-based Web editor and reporting template designer. Give your users an MS Word compatible editor to create powerful reporting templates anywhere – in any browser on any device. Our ASP.NET components combine the power of a reporting tool and an easy-to-use WYSIWYG word processor – fully programmable and embeddable in your ASP.NET application.

ADO Tutorial

Mocking is fast but typically limited by a developer’s understanding of the underlying technology. Incorrect assumptions can lead to unforeseen errors in production environments. If you have multiple dependencies to register with the container, you can write them inside a method and then call it here once to ensure that the code is clean. Next add the TinyIoC NuGet package to the Web API project you just created in Visual Studio.

It was first
released in January 2002 with version
1.0 of the .NET Framework, and is the successor to Microsoft’s Active Server
Pages (ASP) technology. ASP.NET is
built on the Common Language Runtime
(CLR), allowing programmers to write
ASP.NET code using any supported .NET
language. ASP.NET is an open source, server-side web application framework created by Microsoft that runs on Windows and was started in the early 2000s. ASP.NET allows developers to create web applications, web services, and dynamic content-driven websites. It used to be that developers had to buy expensive software (called Integrated Development Environments, or IDEs) in order to build applications.

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This tutorial shows how to create an ASP.NET Core Web application that uses the TX Text Control Document Viewer with PDF.js support. To enable collaboration in your applications, typical annotations can be added to documents and stored separately as JSON. A very typical task in business applications is to view PDF documents in web applications. This article describes how to use the TX Text Control Document Viewer to display PDF documents in ASP.NET Core Web Apps. The documentation provides an overview of the complete product range, including getting started tutorials, technical articles and reference guides.

Developers measure these tests in seconds while mocked tests in milliseconds. Generally, these tests can be more “accurate” and produce higher confidence levels, but they cost time and resources. Note how the type has been passed to retrieve the appropriate type of object from the container. You can now use this instance (named _myService) to invoke methods pertaining to the IMyService interface.

Create a minimalistic class in ASP.NET Core

That’s a 4-second improvement, which will scale as our test suite grows. With xUnit, the IAsyncLifetime methods allow us to start and stop the container. Once the container is activated, what is asp.net the test runner can execute the Can_Call_Endpoint method. We’ll use xUnit as my testing framework for the following examples, but these samples will also work in NUnit.

Using the Angular npm package and TX Text Control .NET Server for ASP.NET, you can add document editing and viewing to Angular applications. The web application utilizes Dapper and a PostgreSQL instance to read Car records from a table. Most importantly, the application finds the connection string in the configuration instance, which reads from all the default locations.

Client-side development¶

The ASP.NET SOAP extension framework allows ASP.NET components to process SOAP messages. Our libraries – built around our core technologies – help developers add deep functionality document processing to web, mobile, cloud and desktop applications. Running this single test with all base images already downloaded still comes at 23 seconds of execution time. For .NET developers, we don’t see the advantages to this approach unless you have container-specific dependencies that must run within the container. That said, Testcontainers provides a full-featured set of APIs that allow this approach to be possible, and you should evaluate its usefulness based on your use cases. This sample introduces you to the ImageFromDockerfileBuilder class, which allows us to find and use an existing Dockerfile.