fix: add slice type of request body data

internal/har2case/core.go

@@ -282,14 +282,22 @@ func (s *tStep) makeValidate(entry *Entry) error {
 		return nil
 	}
 	if strings.HasPrefix(respBody.MimeType, "application/json") {
+		var data []byte
+		var err error
 		// response body is json
 		if respBody.Encoding == "base64" {
 			// decode base64 text
-			data, err := base64.StdEncoding.DecodeString(respBody.Text)
+			data, err = base64.StdEncoding.DecodeString(respBody.Text)
 			if err != nil {
 				return errors.Wrap(err, "decode base64 error")
 			}
-
+		} else if respBody.Encoding == "" {
+			// no encoding
+			data = []byte(respBody.Text)
+		} else {
+			// other encoding type
+			return nil
+		}
 		// convert to json
 		var body interface{}
 		if err = json.Unmarshal(data, &body); err != nil {
@@ -324,7 +332,6 @@ func (s *tStep) makeValidate(entry *Entry) error {
 			}
 		}
 	}
-	}
 
 	return nil
 }

runner.go

@@ -716,6 +716,16 @@ func (r *caseRunner) runStepRequest(step *TStep) (stepResult *stepData, err erro
 					req.Header.Set("Content-Type", "application/json; charset=utf-8")
 				}
 			}
+		case []interface{}:
+			contentType := req.Header.Get("Content-Type")
+			// post json
+			dataBytes, err = json.Marshal(vv)
+			if err != nil {
+				return stepResult, err
+			}
+			if contentType == "" {
+				req.Header.Set("Content-Type", "application/json; charset=utf-8")
+			}
 		case string:
 			dataBytes = []byte(vv)
 		case []byte: