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proposal: testing: add Test function #32067

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rogpeppe opened this issue May 15, 2019 · 5 comments
Closed

proposal: testing: add Test function #32067

rogpeppe opened this issue May 15, 2019 · 5 comments
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@rogpeppe
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The testing package has long contained the Benchmark function, which allows code in a non-testing source file to run benchmarks.

It is sometimes useful to be able to run test code in a non-testing context too; for example to demonstrate a failing test in the Go playground.

Perhaps something like this?

// Test runs f as a test with the given name. Any test output
// is written to w. Test reports whether the test has succeeded.
func Test(w io.Writer, name string, f func(t *testing.T)) bool
@gopherbot gopherbot added this to the Proposal milestone May 15, 2019
@josharian
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See also #6511

There is work in progress now to allow multiple files in the playground, which should make this better yet.

@rsc
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rsc commented May 28, 2019

I had no idea that https://play.golang.org/p/LnHfX2yF4Oe worked, but it does. (We should write clearer docs for the playground - @bradfitz will file a bug.)

Given that https://play.golang.org/p/LnHfX2yF4Oe does work, @rogpeppe, is there still much rationale for adding testing.Test?

@rsc rsc closed this as completed May 28, 2019
@bradfitz
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I filed #32294

@rsc
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rsc commented May 29, 2019

Looking at this again I am surprised that GitHub says I closed this. I suspect I clicked the wrong button again. I intended to leave it open for @rogpeppe to respond.

@rsc rsc reopened this May 29, 2019
@rogpeppe
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Thanks Russ - the close did feel a little sudden :) The playground was my main motivation behind raising this issue, so I think it's OK to close this issue. I might remember another use case in time though.

@golang golang locked and limited conversation to collaborators May 28, 2020
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@bradfitz @rogpeppe @josharian @rsc @gopherbot