On Tue, Oct 11, 2022 at 8:42 PM Jingguo Yao <yaojing...@gmail.com> wrote:
>
> I have the following directory layout:
>
> ├── bar
> │ └── bar_test.go
> ├── foo
> │ └── foo_test.go
> ├── go.mod
> └── go.sum
>
>
> foo_test.go:
> package main
>
> import (
> "fmt"
> "testing"
> )
>
> func TestHelloWorld(t *testing.T) {
> fmt.Println("hello, foo")
> t.Log("hi, foo")
> }
>
> bar_test.go:
> package bar
>
> import (
> "fmt"
> "testing"
> )
>
> func TestGreeting(t *testing.T) {
> fmt.Println("hello, bar")
> t.Log("hi, bar")
> }
>
>
> $ go test -count=1 -v ./...
> === RUN TestGreeting
> hello, bar
> bar_test.go:10: hi, bar
> --- PASS: TestGreeting (0.00s)
> PASS
> ok yao.org/lang/bar 0.814s
> === RUN TestHelloWorld
> hello, foo
> foo_test.go:10: hi, foo
> --- PASS: TestHelloWorld (0.00s)
> PASS
> ok yao.org/lang/foo 0.518s
>
> $ go test -count=1 ./...
> ok yao.org/lang/bar 0.115s
> ok yao.org/lang/foo 0.210s
>
> foo$ go test -v -count=1
> === RUN TestHelloWorld
> hello, foo
> foo_test.go:10: hi, foo
> --- PASS: TestHelloWorld (0.00s)
> PASS
> ok yao.org/lang/foo 0.271s
>
> foo$ go test -count=1
> hello, foo
> PASS
> ok yao.org/lang/foo 0.105s
>
> I found the following different effects on two test modes by -v flag.
>
> 1. -v enables the output of fmt.Println and T.Log statements in package list
> mode.
> 2. -v enables the output of T.Log statements in local directory mode.
>
> I browsed https://pkg.go.dev/cmd/go. But I failed to find a description of
> this difference. Does this difference work as designed? If yes, can we
> document
> it explicitly?
I don't think we want to lock ourselves into the current behavior if
we can avoid it. We may find reasons to change it over time.
(That said I wouldn't be surprised if changing this behavior broke
some people's use cases.)
Ian
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