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os/exec: add example for CommandContext

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Updates #16360

Change-Id: I0e0afe7a89f2ebcb3e5bbc345f77a605d3afc398
Reviewed-on: https://go-review.googlesource.com/30103
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Alexander Döring 2016-10-02 21:07:40 +02:00 committed by Brad Fitzpatrick
parent b9fd510cd0
commit a9b4953777
1 changed files with 12 additions and 0 deletions
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12
src/os/exec/example_test.go
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@ -6,6 +6,7 @@ package exec_test
import (
"bytes"
"context"
"encoding/json"
"fmt"
"io"
@ -13,6 +14,7 @@ import (
"log"
"os/exec"
"strings"
"time"
)
func ExampleLookPath() {
@ -123,3 +125,13 @@ func ExampleCmd_CombinedOutput() {
}
fmt.Printf("%s\n", stdoutStderr)
}
func ExampleCommandContext() {
ctx, cancel := context.WithTimeout(context.Background(), 100*time.Millisecond)
defer cancel()
if err := exec.CommandContext(ctx, "sleep", "5").Run(); err != nil {
// This will fail after 100 milliseconds. The 5 second sleep
// will be interrupted.
}
}