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# Activities and Attachments

Split long tests into substeps with activities, and attach output data like files and screenshots.

## Topics

### Activities

[Grouping Tests into Substeps with Activities](/documentation/XCTest/grouping-tests-into-substeps-with-activities)

Simplify test reports by creating activities that organize substeps within complex test methods.

[`XCTContext`](/documentation/XCTest/XCTContext)

A proxy for the current testing context.

[`XCTActivity`](/documentation/XCTest/XCTActivity)

A named substep of a test method.

### Attachments

[Adding Attachments to Tests, Activities, and Issues](/documentation/XCTest/adding-attachments-to-tests-activities-and-issues)

Use attachments to store a test’s output data for later analysis.

[`XCTAttachment`](/documentation/XCTest/XCTAttachment)

Data from a test method’s execution, such as a file, image, screenshot, data blob, or ZIP file.


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