cmd/vet: support "vet a.go a_test.go b.go" when a regular package and a test package #22530
Description
What version of Go are you using (go version)?
go version go1.9.2 freebsd/amd64
Does this issue reproduce with the latest release?
Yes
What operating system and processor architecture are you using (go env)?
GOARCH="amd64"
GOBIN="/data/go/bin"
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="freebsd"
GOOS="freebsd"
GOPATH="/data/go"
GORACE=""
GOROOT="/usr/local/go"
GOTOOLDIR="/usr/local/go/pkg/tool/freebsd_amd64"
GCCGO="gccgo"
CC="clang"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build969955960=/tmp/go-build -gno-record-gcc-switches"
CXX="clang++"
CGO_ENABLED="1"
CGO_CFLAGS="-g -O2"
CGO_CPPFLAGS=""
CGO_CXXFLAGS="-g -O2"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-g -O2"
PKG_CONFIG="pkg-config"
What did you do?
go tool vet example_test.go ticker.go What did you expect to see?
No errors
What did you see instead?
example_test.go:10: ExampleTicker refers to unknown identifier: TickerThe issue is order dependent so if name the files in the opposite order then no error occurs.
The problem is that the pkg used by the checks is the first package from the listed files.