add TestDisableBindValidation (#2071)

mode_test.go

@@ -40,6 +40,14 @@ func TestSetMode(t *testing.T) {
 	assert.Panics(t, func() { SetMode("unknown") })
 }
 
+func TestDisableBindValidation(t *testing.T) {
+	v := binding.Validator
+	assert.NotNil(t, binding.Validator)
+	DisableBindValidation()
+	assert.Nil(t, binding.Validator)
+	binding.Validator = v
+}
+
 func TestEnableJsonDecoderUseNumber(t *testing.T) {
 	assert.False(t, binding.EnableDecoderUseNumber)
 	EnableJsonDecoderUseNumber()