add unit tests

pkg/validators/not_blank_test.go

@@ -0,0 +1,32 @@
+package validators
+
+import (
+	"testing"
+
+	"github.com/go-playground/validator/v10"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestValidNotBlank(t *testing.T) {
+	validate := validator.New()
+	err := validate.RegisterValidation("notBlank", NotBlank)
+	assert.Nil(t, err)
+
+	err = validate.Var("1", "notBlank")
+	assert.Nil(t, err)
+
+	err = validate.Var(" 1 ", "notBlank")
+	assert.Nil(t, err)
+}
+
+func TestInvalidNotBlank(t *testing.T) {
+	validate := validator.New()
+	err := validate.RegisterValidation("notBlank", NotBlank)
+	assert.Nil(t, err)
+
+	err = validate.Var("", "notBlank")
+	assert.NotNil(t, err)
+
+	err = validate.Var("   ", "notBlank")
+	assert.NotNil(t, err)
+}