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callcount

istio.io/istio/pkg/test.Failer.Fatal

third-party

The 6023rd most-called third-party method by production calls. Called 141 times across 1 modules; 101 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
101
non-test, non-generated
all calls
141
total callsites
modules
1
distinct callers
in loop
9%
of prod calls
in tests
28%
40 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.Fatal 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 141, prioritizing in-loop and non-test usage. We link to source, never display it.

Failer.Fatal · 12 of 141 callsites

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

    operator/pkg/test/util.go:38

    in loop

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

    pkg/test/framework/components/echo/echotest/setup.go:52

    in loop

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

    pkg/test/util/assert/tracker.go:84

    in loop

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

    pkg/test/framework/components/echo/echotest/setup.go:101

    in loop

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

    pkg/test/framework/components/echo/echotest/setup.go:106

    in loop

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

    pilot/pkg/networking/core/fake.go:309

    in loop

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

    pilot/pkg/networking/core/fake.go:329

    in loop

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

    pilot/test/xdstest/extract.go:443

    in loop

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

    pilot/test/xdstest/extract.go:455

    in loop

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

    pkg/test/json.go:29

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

    operator/pkg/test/util.go:32

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

    pkg/test/json.go:33

top callers

The modules that reach for it

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

  • istio.io/istio141100%

siblings

More from istio.io/istio/pkg/test

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