How to add Trace attachments using .NET
How can I add attachments to traces (aka Trace.zip) from .NET code? I want to make them available via the Trace Viewer.
I found this blog post that shows how to do it from TypeScript using testInfo.attach: https://timdeschryver.dev/blog/include-attachments-to-your-playwright-report#add-a-downloaded-file-to-the-report
But I don't find something like TestInfo in the .NET API (using MSTest).
This thread is trying to answer question "How can I add attachments to traces from .NET code using MSTest?"
Related Ask AI answer for "How do I record and attach traces to test results in MSTest using Playwright in .NET?".
Answer
Attaching Traces to MSTest Results with Playwright in .NET
First, install the necessary dependencies, Microsoft.Playwright and MSTest.TestFramework, using the NuGet Package Manager or by running the following commands:
Next, create a new test class with the [TestClass] attribute and a test method with the [TestMethod] attribute.
When running your tests, set the --trace flag to "on" to record a trace.
To attach files to traces, use Playwright's Page.Context.Tracing.Start method and Page.Context.Tracing.AddTraceChunk. Here's an example:
In this example, we start tracing and specify options such as capturing screenshots and snapshots. After performing your test actions, stop tracing and save the resulting trace buffer to a file. Attach this file to the test result using TestContext.AddResultFile.
When running your tests with MSTest, you'll see the attached traces in the test results. For more details, check the official documentation.
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