add *exec.Cmd support

executor.go

@@ -1,5 +1,11 @@
 package runn
 
+import (
+	"bytes"
+	"fmt"
+	"os/exec"
+)
+
 // Executor do the code statement execution
 type Executor struct {
 	StopWhenError bool
@@ -19,10 +25,26 @@ func (e Executor) Execute(stmts ...interface{}) (err error) {
 		case Runner:
 			runner := stmt.(Runner)
 			runErr := runner.Run()
-			if e.StopWhenError {
-				return runErr
+			if runErr != nil {
+				if e.StopWhenError {
+					return runErr
+				}
+				errs.Add(runErr)
+			}
+		case *exec.Cmd:
+			execCmd := stmt.(*exec.Cmd)
+			buf := bytes.Buffer{}
+			execCmd.Stdout = &buf
+			execCmd.Stderr = &buf
+
+			runErr := execCmd.Run()
+			if err != nil {
+				runErr = fmt.Errorf("%s: %s", err.Error(), buf.String())
+				if e.StopWhenError {
+					return runErr
+				}
+				errs.Add(runErr)
 			}
-			errs.Add(runErr)
 		}
 	}
 	if len(errs) > 0 {

executor_test.go

@@ -2,6 +2,7 @@ package runn_test
 
 import (
 	"errors"
+	"os/exec"
 	"testing"
 
 	"github.com/stretchr/testify/require"
@@ -29,8 +30,9 @@ func TestExecutor_All(t *testing.T) {
 				RunnerImplementationWithError{},
 				errors.New("error1"),
 				errors.New("error2"),
+				exec.Command("wrong-command", "bad-argument"),
 			},
-			errors.New("some-error; error1; error2"),
+			errors.New("some-error; error1; error2; exec: \"wrong-command\": executable file not found in $PATH"),
 		},
 		{
 			true,
@@ -54,9 +56,10 @@ func TestExecutor_All(t *testing.T) {
 			false,
 			[]interface{}{
 				RunnerImplementationNoError{},
-				RunnerImplementationWithError{},
+				nil,
+				exec.Command("echo", "hello", "world"),
 			},
-			errors.New("some-error"),
+			nil,
 		},
 	}