synctest and test examples

[Pierre Durand]

Using synctest requires to have access to a *testing.T

This is not available from an example testing function.

Should we automatically run examples in a synctest time bubble ?

[Jason E. Aten]

Since synctest runs on a fake clock, doing anything 

"automatically" with it seems like a bad idea.

You very much want to know when you are 

using it, and most Examples to this point

(presumably a sizable set), have no 

idea about synctest, since it didn't exist when

they were written, that would risk breaking alot of things.

Moreover its easy to just write a regular test. I would just write a regular 

Test func and put the word "Example" in a comment above it.

Same result, no?

[Axel Wagner]

On Fri, 5 Sept 2025 at 22:14, Jason E. Aten <j.e....@gmail.com> wrote:

Moreover its easy to just write a regular test. I would just write a regular 

Test func and put the word "Example" in a comment above it.

Same result, no?

No, example functions are exposed in package docs (with `go doc -http` or on pkg.go.dev) and can be run directly from the browser: https://go.dev/blog/examples

I agree with you that we don't want to do it automatically, but it would be useful to have a way to do it at all.

 

On Friday, September 5, 2025 at 7:19:36 PM UTC+1 Pierre Durand wrote:

Using synctest requires to have access to a *testing.T

This is not available from an example testing function.

Should we automatically run examples in a synctest time bubble ?

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