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istio.io/istio/pkg/test.Failer.Fatalf

third-party

The 7883rd most-called third-party method by production calls. Called 104 times across 1 modules; 77 of those run outside tests and generated code.

No change in production calls since 2026-W39.

All of istio.io/istio/pkg/test → Docs on pkg.go.dev ↗

prod calls
77
non-test, non-generated
all calls
104
total callsites
modules
1
distinct callers
in loop
27%
of prod calls
in tests
26%
27 calls
resolved
0%
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 →

  • Interface method100%Called through an interface. The runtime target may differ.

who calls this

Notable callers

Production calls into Failer.Fatalf from notable Go projects. Open one on the map to see what else it hammers.

where it's called

Callsites in the wild

12 representative callsites of 104, prioritizing in-loop and non-test usage. We link to source, never display it.

Failer.Fatalf · 12 of 104 callsites

  • istio.io/istio @v0.0.0-20260928115056-32ddacd7a1cb

    pkg/kube/krt/krttest/helpers.go:46

    in loop

  • istio.io/istio @v0.0.0-20260928115056-32ddacd7a1cb

    pkg/test/util/assert/assert.go:131

    in loop

  • istio.io/istio @v0.0.0-20260928115056-32ddacd7a1cb

    pilot/pkg/networking/core/listenertest/match.go:172

    in loop

  • istio.io/istio @v0.0.0-20260928115056-32ddacd7a1cb

    pilot/pkg/serviceregistry/util/xdsfake/updater.go:199

    in loop

  • istio.io/istio @v0.0.0-20260928115056-32ddacd7a1cb

    pilot/pkg/networking/core/fake.go:238

    in loop

  • istio.io/istio @v0.0.0-20260928115056-32ddacd7a1cb

    pilot/pkg/serviceregistry/util/xdsfake/updater.go:241

    in loop

  • istio.io/istio @v0.0.0-20260928115056-32ddacd7a1cb

    pilot/pkg/serviceregistry/util/xdsfake/updater.go:248

    in loop

  • istio.io/istio @v0.0.0-20260928115056-32ddacd7a1cb

    pilot/test/xdstest/extract.go:255

    in loop

  • istio.io/istio @v0.0.0-20260928115056-32ddacd7a1cb

    pilot/test/xdstest/extract.go:281

    in loop

  • istio.io/istio @v0.0.0-20260928115056-32ddacd7a1cb

    pilot/pkg/serviceregistry/util/xdsfake/updater.go:294

    in loop

  • istio.io/istio @v0.0.0-20260928115056-32ddacd7a1cb

    pilot/test/xdstest/extract.go:296

    in loop

  • istio.io/istio @v0.0.0-20260928115056-32ddacd7a1cb

    pkg/test/framework/components/echo/echotest/run.go:306

    in loop

top callers

The modules that reach for it

The modules that call Failer.Fatalf most in this snapshot.

  • istio.io/istio104100%

siblings

More from istio.io/istio/pkg/test

The other most-called members in this package. See all →