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cmd/go: go run x_test.go compiles nothing #4032

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gopherbot opened this issue Sep 1, 2012 · 5 comments
Closed

cmd/go: go run x_test.go compiles nothing #4032

gopherbot opened this issue Sep 1, 2012 · 5 comments
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Go1.1

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@gopherbot
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by d.wright.dev:

'go run' invokes 'go test' when source filename ends with *_test.go

What steps will reproduce the problem?

1. create a new go source file 'filename.go' with an arbitrary program
2. run 'go run filename.go'

What is the expected output?

output of go run

What do you see instead?

> can't load package: package <package>: use of cgo in test
/path/to/file/using/cgo/dlbug_fail_test.go not supported

Which compiler are you using (5g, 6g, 8g, gccgo)?

8g

Which operating system are you using?

OS X 10.8.1 (12B19)

Which version are you using?  (run 'go version')

go version go1.0.2

Please provide any additional information below.
@rsc
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rsc commented Sep 1, 2012

Comment 1:

My guess is that your filename.go imports "path/to/file/using/cgo". The go command here
is telling you that it cannot process that package, due to issue #4030. I don't think go
run is invoking go test.

Status changed to WaitingForReply.

@gopherbot
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Comment 2 by d.wright.dev:

It's definitely running go test:
go run not_a_test.go 
>runtime.main: undefined: main.init
>runtime.main: undefined: main.main
go run not_a_varmint.go
>But I'm not a test!

Attachments:

  1. not_a_test.go (83 bytes)
  2. not_a_varmint.go (83 bytes)

@rsc
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rsc commented Sep 1, 2012

Comment 3:

It is not running 'go test'. However, it is omitting the _test.go files from the list,
like it would omit them from a directory listing, meaning that it compiles nothing at
all. 
I am not sure whether we will support 'go run x_test.go' - it breaks some of the
symmetry with other commands - but at the least we should give a better error in this
case.

Labels changed: added priority-later, go1.1, removed priority-triage.

Status changed to Accepted.

@rsc
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rsc commented Dec 10, 2012

Comment 4:

Labels changed: added size-m.

@rsc
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rsc commented Jan 31, 2013

Comment 5:

This issue was closed by revision 8b6534b.

Status changed to Fixed.

@rsc rsc added this to the Go1.1 milestone Apr 14, 2015
@rsc rsc removed the go1.1 label Apr 14, 2015
@golang golang locked and limited conversation to collaborators Jun 24, 2016
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