Swift SDK tests hang when run via terminal / CI

[anahjz]

Hi
Thanks for maintaining the Swift SDK, really appreciate the work.

I’m encountering an issue where the Swift SDK test suite hangs when executed from the terminal or in CI/CD, even though the same tests run fine inside Xcode.

Problem

When running tests using terminal-based commands (CI-style execution), the test process starts and many tests run successfully, but near the end the execution hangs and never completes.

• No failure or crash is reported
• No more test output is printed
• The process does not exit on its own
• CI jobs eventually time out

How tests are run

Examples:
swift test
Behavior difference

Xcode UI: All tests finish
Terminal / CI: Test run hangs

Guess
It feels like one or more tests may leave unfinished async work, such as:
background queues

• timers
• run loops
• unfulfilled expectations

Because terminal/CI runners wait for all work to complete, the test process never terminates.
Just wanted to report this since it blocks CI pipelines and automated test runs.

Thanks

[contributor-support]

Thanks for opening this issue! We'll get back to you shortly. If it is a bug, please make sure to add steps to reproduce the issue.

[SKannaniOS]

Hey @anahjz,

Thanks for reporting this. We’ll look into it.

[SKannaniOS]

@anahjz

Hey, Could you confirm whether you’re executing the tests inside the SDK repo itself, or within an app that uses the SDK as a dependency?

[anahjz]

Hey, Could you confirm whether you’re executing the tests inside the SDK repo itself, or within an app that uses the SDK as a dependency?
@SKannaniOS
The tests are being executed inside the SDK repository itself, not from an external app consuming the SDK as a dependency.

[SKannaniOS]

Please run the tests with parallel execution disabled, which should allow the tests to complete without hanging:

swift test --no-parallel

[anahjz]

@SKannaniOS
There is another issue on test,

Description

We are experiencing CI failures caused by repeated network timeouts when the SDK attempts to upload events to:
https://test.dataplane.com/v1/batch
The failing requests return:
Error Domain=NSURLErrorDomain Code=-1001 "The request timed out."

These requests never complete and run until the system timeout (typically ~60 seconds), then fail with -1001.
The SDK treats this as a retryable failure and continues retrying indefinitely. As a result:

• Multiple timeout errors are logged (e.g., Task .97, .98, .99…)
• Background upload/config tasks remain active
• The test process never exits cleanly
• GitLab CI eventually hits the job timeout (e.g., 1 hour)

Steps to Reproduce

Run unit/integration tests in CI environment.

SDK attempts to upload events to the configured dataplane URL.

Network request times out with NSURLErrorDomain -1001.

SDK retries repeatedly.

Background tasks never finish.

CI job eventually times out and is killed.

This issue appears to happen randomly in CI — some runs pass successfully, while others hang due to repeated timeouts and retries. The dataplane host becomes unreachable intermittently, which causes the SDK to enter the retry loop and prevents the process from terminating.

[SKannaniOS]

Hey @anahjz

Thanks for reporting this. We’ll look into it.

[SKannaniOS]

Hey @anahjz,

This issue has been addressed in our latest release, version 1.2.0. We’ve validated the fix in our CI environment, and the timeout/retry behavior no longer causes hanging jobs. Please try our latest release, version 1.2.0 and share your feedback.

[SKannaniOS]

Hey @anahjz,

This issue should be resolved in the latest release. We’re closing it for now. If you encounter any further problem, please feel free to open a new one issue with the details.