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Description
There's rules about what a TestFoo
may do with the *testing.T
it is given. Some are documented (e.g. https://golang.org/pkg/testing/#T puts restrictions on invoking Fatalf
and friends), but some are not (e.g. Logf
and probably most other methods should not be called after TestFoo
returns). Same applies to *testing.B
and any future such values/types.
I came across this while trying to diagnose a problem that seems to be due to #40908, but realised I couldn't find the rules written down anywhere.