add some validators

validators.go → validator.go

@@ -171,6 +171,12 @@ func NewURLValidator() Validator {
 	}
 }
 
+// NewMaybeURLValidator returns a validator to validate the value may be empty
+// or a URL.
+func NewMaybeURLValidator() Validator {
+	return Or(NewEmptyStrValidator(), NewURLValidator())
+}
+
 // NewURLSliceValidator returns a validator to validate whether the string element
 // of the []string value is a valid URL.
 func NewURLSliceValidator() Validator {
@@ -192,6 +198,12 @@ func NewIPValidator() Validator {
 	}
 }
 
+// NewMaybeIPValidator returns a validator to validate the value may be empty
+// or a ip.
+func NewMaybeIPValidator() Validator {
+	return Or(NewEmptyStrValidator(), NewIPValidator())
+}
+
 // NewIPSliceValidator returns a validator to validate whether the string element
 // of the []string value is a valid IP.
 func NewIPSliceValidator() Validator {
@@ -213,6 +225,12 @@ func NewEmailValidator() Validator {
 	}
 }
 
+// NewMaybeEmailValidator returns a validator to validate the value may be empty
+// or an email.
+func NewMaybeEmailValidator() Validator {
+	return Or(NewEmptyStrValidator(), NewEmailValidator())
+}
+
 // NewEmailSliceValidator returns a validator to validate whether the string element
 // of the []string value is a valid email.
 func NewEmailSliceValidator() Validator {
@@ -244,12 +262,36 @@ func NewAddressValidator() Validator {
 	}
 }
 
+// NewMaybeAddressValidator returns a validator to validate the value may be
+// empty or an address.
+func NewMaybeAddressValidator() Validator {
+	return Or(NewEmptyStrValidator(), NewAddressValidator())
+}
+
+// NewAddressOrIPValidator is equal to NewAddressValidator, but it maybe miss
+// the port.
+func NewAddressOrIPValidator() Validator {
+	return Or(NewIPValidator(), NewAddressValidator())
+}
+
+// NewMaybeAddressOrIPValidator returns a validator to validate the value may be
+// empty or an address or an ip.
+func NewMaybeAddressOrIPValidator() Validator {
+	return Or(NewEmptyStrValidator(), NewAddressOrIPValidator())
+}
+
 // NewAddressSliceValidator returns a validator to validate whether the string element
 // of the []string value is a valid address.
 func NewAddressSliceValidator() Validator {
 	return NewStrSliceValidator(NewAddressValidator())
 }
 
+// NewAddressOrIPSliceValidator returns a validator to validate whether
+// the string element of the []string value is an address or ip.
+func NewAddressOrIPSliceValidator() Validator {
+	return NewStrSliceValidator(NewAddressOrIPValidator())
+}
+
 // NewIntegerRangeValidator returns a validator to validate whether the integer
 // value is between the min and the max.
 //

validator_test.go

@@ -0,0 +1,66 @@
+package gconf
+
+import "testing"
+
+func TestNewMaybeURLValidator(t *testing.T) {
+	validate := NewMaybeURLValidator()
+	if err := validate(""); err != nil {
+		t.Error(err)
+	} else if err = validate("http://www.example.com"); err != nil {
+		t.Error(err)
+	}
+}
+
+func TestNewMaybeIPValidator(t *testing.T) {
+	validate := NewMaybeIPValidator()
+	if err := validate(""); err != nil {
+		t.Error(err)
+	} else if err = validate("1.2.3.4"); err != nil {
+		t.Error(err)
+	}
+}
+
+func TestNewMaybeEmailValidator(t *testing.T) {
+	validate := NewMaybeEmailValidator()
+	if err := validate(""); err != nil {
+		t.Error(err)
+	} else if err = validate("[email protected]"); err != nil {
+		t.Error(err)
+	}
+}
+
+func TestNewMaybeAddressValidator(t *testing.T) {
+	validate := NewMaybeAddressValidator()
+	if err := validate(""); err != nil {
+		t.Error(err)
+	} else if err = validate("1.2.3.4:80"); err != nil {
+		t.Error(err)
+	}
+}
+
+func TestNewAddressOrIPValidator(t *testing.T) {
+	validate := NewAddressOrIPValidator()
+	if err := validate("1.2.3.4"); err != nil {
+		t.Error(err)
+	} else if err = validate("1.2.3.4:80"); err != nil {
+		t.Error(err)
+	}
+}
+
+func TestNewMaybeAddressOrIPValidator(t *testing.T) {
+	validate := NewMaybeAddressOrIPValidator()
+	if err := validate(""); err != nil {
+		t.Error(err)
+	} else if err = validate("1.2.3.4"); err != nil {
+		t.Error(err)
+	} else if err = validate("1.2.3.4:80"); err != nil {
+		t.Error(err)
+	}
+}
+
+func TestNewAddressOrIPSliceValidator(t *testing.T) {
+	validate := NewAddressOrIPSliceValidator()
+	if err := validate([]string{"1.2.3.4", "1.2.3.4:80"}); err != nil {
+		t.Error(err)
+	}
+}