issue-#11

update gt, gte, lt and let to handle dates compared to time.Now().UTC()

baked_in.go

@@ -5,6 +5,7 @@ import (
 	"net/url"
 	"reflect"
 	"strconv"
+	"time"
 )
 
 // BakedInValidators is the map of ValidationFunc used internally
@@ -43,9 +44,9 @@ func isURI(field interface{}, param string) bool {
 		_, err := url.ParseRequestURI(field.(string))
 
 		return err == nil
-	default:
-		panic(fmt.Sprintf("Bad field type %T", field))
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 func isURL(field interface{}, param string) bool {
@@ -66,11 +67,10 @@ func isURL(field interface{}, param string) bool {
 		}
 
 		return err == nil
+	}
 
-	default:
 	panic(fmt.Sprintf("Bad field type %T", field))
 }
-}
 
 func isEmail(field interface{}, param string) bool {
 
@@ -80,9 +80,9 @@ func isEmail(field interface{}, param string) bool {
 
 	case reflect.String:
 		return emailRegex.MatchString(field.(string))
-	default:
-		panic(fmt.Sprintf("Bad field type %T", field))
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 func isHsla(field interface{}, param string) bool {
@@ -93,9 +93,9 @@ func isHsla(field interface{}, param string) bool {
 
 	case reflect.String:
 		return hslaRegex.MatchString(field.(string))
-	default:
-		panic(fmt.Sprintf("Bad field type %T", field))
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 func isHsl(field interface{}, param string) bool {
@@ -106,9 +106,9 @@ func isHsl(field interface{}, param string) bool {
 
 	case reflect.String:
 		return hslRegex.MatchString(field.(string))
-	default:
-		panic(fmt.Sprintf("Bad field type %T", field))
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 func isRgba(field interface{}, param string) bool {
@@ -119,9 +119,9 @@ func isRgba(field interface{}, param string) bool {
 
 	case reflect.String:
 		return rgbaRegex.MatchString(field.(string))
-	default:
-		panic(fmt.Sprintf("Bad field type %T", field))
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 func isRgb(field interface{}, param string) bool {
@@ -132,9 +132,9 @@ func isRgb(field interface{}, param string) bool {
 
 	case reflect.String:
 		return rgbRegex.MatchString(field.(string))
-	default:
-		panic(fmt.Sprintf("Bad field type %T", field))
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 func isHexcolor(field interface{}, param string) bool {
@@ -145,9 +145,9 @@ func isHexcolor(field interface{}, param string) bool {
 
 	case reflect.String:
 		return hexcolorRegex.MatchString(field.(string))
-	default:
-		panic(fmt.Sprintf("Bad field type %T", field))
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 func isHexadecimal(field interface{}, param string) bool {
@@ -158,9 +158,9 @@ func isHexadecimal(field interface{}, param string) bool {
 
 	case reflect.String:
 		return hexadecimalRegex.MatchString(field.(string))
-	default:
-		panic(fmt.Sprintf("Bad field type %T", field))
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 func isNumber(field interface{}, param string) bool {
@@ -171,9 +171,9 @@ func isNumber(field interface{}, param string) bool {
 
 	case reflect.String:
 		return numberRegex.MatchString(field.(string))
-	default:
-		panic(fmt.Sprintf("Bad field type %T", field))
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 func isNumeric(field interface{}, param string) bool {
@@ -184,9 +184,9 @@ func isNumeric(field interface{}, param string) bool {
 
 	case reflect.String:
 		return numericRegex.MatchString(field.(string))
-	default:
-		panic(fmt.Sprintf("Bad field type %T", field))
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 func isAlphanum(field interface{}, param string) bool {
@@ -197,9 +197,9 @@ func isAlphanum(field interface{}, param string) bool {
 
 	case reflect.String:
 		return alphaNumericRegex.MatchString(field.(string))
-	default:
-		panic(fmt.Sprintf("Bad field type %T", field))
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 func isAlpha(field interface{}, param string) bool {
@@ -210,9 +210,9 @@ func isAlpha(field interface{}, param string) bool {
 
 	case reflect.String:
 		return alphaRegex.MatchString(field.(string))
-	default:
-		panic(fmt.Sprintf("Bad field type %T", field))
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 func hasValue(field interface{}, param string) bool {
@@ -260,11 +260,20 @@ func isGte(field interface{}, param string) bool {
 
 		return st.Float() >= p
 
-	default:
+	case reflect.Struct:
-		panic(fmt.Sprintf("Bad field type %T", field))
+
+		if st.Type() == reflect.TypeOf(field) {
+
+			now := time.Now().UTC()
+			t := field.(time.Time)
+
+			return t.After(now) || t.Equal(now)
 		}
 	}
 
+	panic(fmt.Sprintf("Bad field type %T", field))
+}
+
 func isGt(field interface{}, param string) bool {
 
 	st := reflect.ValueOf(field)
@@ -295,12 +304,17 @@ func isGt(field interface{}, param string) bool {
 		p := asFloat(param)
 
 		return st.Float() > p
+	case reflect.Struct:
 
-	default:
+		if st.Type() == reflect.TypeOf(field) {
-		panic(fmt.Sprintf("Bad field type %T", field))
+
+			return field.(time.Time).After(time.Now().UTC())
 		}
 	}
 
+	panic(fmt.Sprintf("Bad field type %T", field))
+}
+
 // length tests whether a variable's length is equal to a given
 // value. For strings it tests the number of characters whereas
 // for maps and slices it tests the number of items.
@@ -334,11 +348,10 @@ func hasLengthOf(field interface{}, param string) bool {
 		p := asFloat(param)
 
 		return st.Float() == p
+	}
 
-	default:
 	panic(fmt.Sprintf("Bad field type %T", field))
 }
-}
 
 // min tests whether a variable value is larger or equal to a given
 // number. For number types, it's a simple lesser-than test; for
@@ -380,11 +393,20 @@ func isLte(field interface{}, param string) bool {
 
 		return st.Float() <= p
 
-	default:
+	case reflect.Struct:
-		panic(fmt.Sprintf("Bad field type %T", field))
+
+		if st.Type() == reflect.TypeOf(field) {
+
+			now := time.Now().UTC()
+			t := field.(time.Time)
+
+			return t.Before(now) || t.Equal(now)
 		}
 	}
 
+	panic(fmt.Sprintf("Bad field type %T", field))
+}
+
 func isLt(field interface{}, param string) bool {
 
 	st := reflect.ValueOf(field)
@@ -416,9 +438,15 @@ func isLt(field interface{}, param string) bool {
 
 		return st.Float() < p
 
-	default:
+	case reflect.Struct:
-		panic(fmt.Sprintf("Bad field type %T", field))
+
+		if st.Type() == reflect.TypeOf(field) {
+
+			return field.(time.Time).Before(time.Now().UTC())
+		}
 	}
+
+	panic(fmt.Sprintf("Bad field type %T", field))
 }
 
 // max tests whether a variable value is lesser than a given

validator.go

@@ -13,6 +13,7 @@ import (
 	"fmt"
 	"reflect"
 	"strings"
+	"time"
 	"unicode"
 )
 
@@ -215,11 +216,22 @@ func (v *Validator) ValidateStruct(s interface{}) *StructValidationErrors {
 				continue
 			}
 
+			if valueField.Type() == reflect.TypeOf(time.Time{}) {
+
+				if fieldError := v.validateFieldByNameAndTag(valueField.Interface(), typeField.Name, tag); fieldError != nil {
+					validationErrors.Errors[fieldError.Field] = fieldError
+					// free up memory reference
+					fieldError = nil
+				}
+
+			} else {
+
 				if structErrors := v.ValidateStruct(valueField.Interface()); structErrors != nil {
 					validationErrors.StructErrors[typeField.Name] = structErrors
 					// free up memory map no longer needed
 					structErrors = nil
 				}
+			}
 
 		default:
 
@@ -270,8 +282,11 @@ func (v *Validator) validateFieldByNameAndTag(f interface{}, name string, tag st
 	switch valueField.Kind() {
 
 	case reflect.Struct, reflect.Interface, reflect.Invalid:
+
+		if valueField.Type() != reflect.TypeOf(time.Time{}) {
 			panic("Invalid field passed to ValidateFieldWithTag")
 		}
+	}
 
 	var valErr *FieldValidationError
 	var err error

validator_test.go

@@ -3,6 +3,7 @@ package validator_test
 import (
 	"fmt"
 	"testing"
+	"time"
 
 	"github.com/joeybloggs/go-validate-yourself"
 	. "gopkg.in/check.v1"
@@ -218,12 +219,70 @@ func (ms *MySuite) TestIsGt(c *C) {
 
 	i := true
 	c.Assert(func() { validator.ValidateFieldByTag(i, "gt") }, PanicMatches, "Bad field type bool")
+
+	t := time.Now().UTC()
+	t = t.Add(time.Hour * 24)
+
+	err = validator.ValidateFieldByTag(t, "gt")
+	c.Assert(err, IsNil)
+
+	t2 := time.Now().UTC()
+
+	err = validator.ValidateFieldByTag(t2, "gt")
+	c.Assert(err, NotNil)
+	c.Assert(err.ErrorTag, Equals, "gt")
+
+	type Test struct {
+		Now *time.Time `validate:"gt"`
+	}
+	s := &Test{
+		Now: &t,
+	}
+
+	errs := validator.ValidateStruct(s)
+	c.Assert(errs, IsNil)
+
+	s = &Test{
+		Now: &t2,
+	}
+
+	errs = validator.ValidateStruct(s)
+	c.Assert(errs, NotNil)
 }
 
 func (ms *MySuite) TestIsGte(c *C) {
 
 	i := true
 	c.Assert(func() { validator.ValidateFieldByTag(i, "gte") }, PanicMatches, "Bad field type bool")
+
+	t := time.Now().UTC()
+	t = t.Add(time.Hour * 24)
+
+	err := validator.ValidateFieldByTag(t, "gte")
+	c.Assert(err, IsNil)
+
+	t2 := time.Now().UTC()
+
+	err = validator.ValidateFieldByTag(t2, "gte")
+	c.Assert(err, NotNil)
+	c.Assert(err.ErrorTag, Equals, "gte")
+
+	type Test struct {
+		Now *time.Time `validate:"gte"`
+	}
+	s := &Test{
+		Now: &t,
+	}
+
+	errs := validator.ValidateStruct(s)
+	c.Assert(errs, IsNil)
+
+	s = &Test{
+		Now: &t2,
+	}
+
+	errs = validator.ValidateStruct(s)
+	c.Assert(errs, NotNil)
 }
 
 func (ms *MySuite) TestIsLt(c *C) {
@@ -242,12 +301,72 @@ func (ms *MySuite) TestIsLt(c *C) {
 
 	i := true
 	c.Assert(func() { validator.ValidateFieldByTag(i, "lt") }, PanicMatches, "Bad field type bool")
+
+	t := time.Now().UTC()
+
+	err = validator.ValidateFieldByTag(t, "lt")
+	c.Assert(err, IsNil)
+
+	t2 := time.Now().UTC()
+	t2 = t2.Add(time.Hour * 24)
+
+	err = validator.ValidateFieldByTag(t2, "lt")
+	c.Assert(err, NotNil)
+	c.Assert(err.ErrorTag, Equals, "lt")
+
+	type Test struct {
+		Now *time.Time `validate:"lt"`
+	}
+
+	s := &Test{
+		Now: &t,
+	}
+
+	errs := validator.ValidateStruct(s)
+	c.Assert(errs, IsNil)
+
+	s = &Test{
+		Now: &t2,
+	}
+
+	errs = validator.ValidateStruct(s)
+	c.Assert(errs, NotNil)
 }
 
 func (ms *MySuite) TestIsLte(c *C) {
 
 	i := true
 	c.Assert(func() { validator.ValidateFieldByTag(i, "lte") }, PanicMatches, "Bad field type bool")
+
+	t := time.Now().UTC()
+
+	err := validator.ValidateFieldByTag(t, "lte")
+	c.Assert(err, IsNil)
+
+	t2 := time.Now().UTC()
+	t2 = t2.Add(time.Hour * 24)
+
+	err = validator.ValidateFieldByTag(t2, "lte")
+	c.Assert(err, NotNil)
+	c.Assert(err.ErrorTag, Equals, "lte")
+
+	type Test struct {
+		Now *time.Time `validate:"lte"`
+	}
+
+	s := &Test{
+		Now: &t,
+	}
+
+	errs := validator.ValidateStruct(s)
+	c.Assert(errs, IsNil)
+
+	s = &Test{
+		Now: &t2,
+	}
+
+	errs = validator.ValidateStruct(s)
+	c.Assert(errs, NotNil)
 }
 
 func (ms *MySuite) TestUrl(c *C) {