Include crate/package name in cargo test -- --format=json output

[HKalbasi]

Problem

Currently, it is very hard (impossible?) to distinguish between events of tests with similar name in different crates in a cargo workspace cargo test -- --format=json output.

Proposed Solution

Include crate or package name inside the event. That is, current state:

{ "type": "suite", "event": "started", "test_count": 760 }
{ "type": "test", "event": "started", "name": "some_test" }
{ "type": "suite", "event": "ok", "passed": 1, "failed": 0, "ignored": 0, "measured": 0, "filtered_out": 0, "exec_time": 0.002828253 }
{ "type": "suite", "event": "started", "test_count": 760 }
{ "type": "test", "event": "started", "name": "some_test" }
{ "type": "suite", "event": "ok", "passed": 1, "failed": 0, "ignored": 0, "measured": 0, "filtered_out": 0, "exec_time": 0.002828253 }

becomes:

{ "crate": "crate1", "type": "suite", "event": "started", "test_count": 760 }
{ "crate": "crate1", "type": "test", "event": "started", "name": "some_test" }
{ "crate": "crate1", "type": "suite", "event": "ok", "passed": 1, "failed": 0, "ignored": 0, "measured": 0, "filtered_out": 0, "exec_time": 0.002828253 }
{ "crate": "crate2", "type": "suite", "event": "started", "test_count": 760 }
{ "crate": "crate2", "type": "test", "event": "started", "name": "some_test" }
{ "crate": "crate2", "type": "suite", "event": "ok", "passed": 1, "failed": 0, "ignored": 0, "measured": 0, "filtered_out": 0, "exec_time": 0.002828253 }

Notes

No response

[weihanglo]

Thanks for the report. This unstable JSON output is currently under re-design and experimental process. This will be implemented outside Cargo. (and it's never Cargo controling that. It's libtest inside rustc)

You can read the RFC 3558, and follow the tracking issue rust-lang/testing-devex-team#1.

Close in favor of rust-lang/testing-devex-team#1.