test: use t.Context() instead of context.Background() (#1306)

The test context is cancelled when the test ends, so anything still holding it stops instead of leaking into the next test. Uses inside `t.Cleanup`, `defer` and `go func` blocks are left alone, as the context is already cancelled there.

Stacked on https://gitea.com/gitea/runner/pulls/1305.

Assisted-by: Codet
Co-authored-by: bircni <[email protected]>
Reviewed-on: https://gitea.com/gitea/runner/pulls/1306
Reviewed-by: bircni <[email protected]>

act/common/context_helpers_test.go

@@ -4,7 +4,6 @@
 package common
 
 import (
-	"context"
 	"errors"
 	"testing"
 
@@ -13,7 +12,7 @@ import (
 )
 
 func TestDryrunContext(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	if Dryrun(ctx) {
 		t.Fatal("plain context should not be dryrun")
 	}
@@ -26,7 +25,7 @@ func TestDryrunContext(t *testing.T) {
 }
 
 func TestJobErrorContainer(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	err := errors.New("job failed")
 
 	SetJobError(ctx, err)
@@ -42,7 +41,7 @@ func TestJobErrorContainer(t *testing.T) {
 }
 
 func TestLoggerAndHandlerContext(t *testing.T) {
-	ctx := context.Background()
+	ctx := t.Context()
 	if Logger(ctx) != logging.Default() {
 		t.Fatal("plain context should use the default logger")
 	}