testing.T.Run
standard libraryThe 226th most-called standard-library method by production calls. Called 246,395 times across 1,279 modules; 4,596 of those run outside tests and generated code.
0% in production calls vs 2026-W39 (4,579 → 4,596)
- prod calls
- 4,596
- non-test, non-generated
- all calls
- 246,395
- total callsites
- modules
- 1,279
- distinct callers
- in loop
- 17%
- of prod calls
- in tests
- 98%
- 241,799 calls
- resolved
- 100%
- to a known target
resolution mix
How each call resolves
How each call was attributed. Only resolved kinds, where the target function is known, count toward the ranking. Interface dispatch and unresolved receivers are reported separately and never guessed. Read the taxonomy →
- Concrete method100%A method on a value whose type is known exactly.
- Embedded method<1%Reached through an embedded type.
who calls this
Notable callers
Production calls into T.Run from notable Go projects. Open one on the map to see what else it hammers.
- Dgraph 349 8%
- HashiCorp 300 7%
- Kubernetes 103 2%
- containerd 83 2%
- SPIFFE 73 2%
where it's called
Callsites in the wild
12 representative callsites of 246,395, prioritizing in-loop and non-test usage. We link to source, never display it.
- in loop
- in loop
-
cockroachdb/cockroach @v19.2.12+incompatible
in loop - in loop
- in loop
- in loop
-
docker/docker @v28.5.2+incompatible
in loop -
encr.dev @v1.58.6
v2/parser/resource/usage/usagetest/usagetest.go:53
in loop - in loop
-
gitea.dev @v1.27.3
modules/indexer/issues/internal/tests/tests.go:50
in loop - in loop
-
NoFxAiOS/nofx @v0.0.0-20260905025447-638d40421189
in loop
top callers
The modules that reach for it
The modules that call T.Run most in this snapshot.
- github.com/photoprism/photoprism15,6996%
- github.com/weaviate/weaviate11,2065%
- github.com/kubernetes/kubernetes6,3683%
- github.com/hashicorp/boundary4,3162%
- k8s.io/kubernetes3,7342%
siblings
More from testing
The other most-called members in this package. See all →