Enable race testing in validation

internal/validation/validation.go

@@ -8,9 +8,10 @@ import (
 	"gitea.maximumdirect.net/eric/ReleaseKit/internal/gotool"
 )
 
-// Settings selects shared validation behavior. Its zero value runs the current
-// default Go suite.
-type Settings struct{}
+// Settings selects shared validation behavior.
+type Settings struct {
+	Race bool
+}
 
 // Request identifies the captured source and output used by shared validation.
 type Request struct {
@@ -32,8 +33,12 @@ func Run(ctx context.Context, request Request) error {
 	if err != nil {
 		return &Failure{Check: GoTest, Cause: err}
 	}
-	_, err = tool.Run(ctx, request.RepositoryDir, gotool.Native, gotool.Target{}, request.Output,
-		"test", "-mod=readonly", "-count=1", "./...")
+	args := []string{"test", "-mod=readonly", "-count=1"}
+	if request.Settings.Race {
+		args = append(args, "-race")
+	}
+	args = append(args, "./...")
+	_, err = tool.Run(ctx, request.RepositoryDir, gotool.Native, gotool.Target{}, request.Output, args...)
 	if err != nil {
 		return &Failure{Check: GoTest, Cause: err}
 	}