initial commit

dyndns/ipparser/ipparser.go

@@ -0,0 +1,23 @@
+package ipparser
+
+import (
+	"net"
+)
+
+func ValidIP4(ipAddress string) bool {
+	testInput := net.ParseIP(ipAddress)
+	if testInput == nil {
+		return false
+	}
+
+	return (testInput.To4() != nil)
+}
+
+func ValidIP6(ip6Address string) bool {
+	testInputIP6 := net.ParseIP(ip6Address)
+	if testInputIP6 == nil {
+		return false
+	}
+
+	return (testInputIP6.To16() != nil)
+}

dyndns/ipparser/ipparser_test.go

@@ -0,0 +1,29 @@
+package ipparser
+
+import (
+	"testing"
+)
+
+func TestValidIP4ToReturnTrueOnValidAddress(t *testing.T) {
+	result := ValidIP4("1.2.3.4")
+
+	if result != true {
+		t.Fatalf("Expected ValidIP(1.2.3.4) to be true but got false")
+	}
+}
+
+func TestValidIP4ToReturnFalseOnInvalidAddress(t *testing.T) {
+	result := ValidIP4("abcd")
+
+	if result == true {
+		t.Fatalf("Expected ValidIP(abcd) to be false but got true")
+	}
+}
+
+func TestValidIP4ToReturnFalseOnEmptyAddress(t *testing.T) {
+	result := ValidIP4("")
+
+	if result == true {
+		t.Fatalf("Expected ValidIP() to be false but got true")
+	}
+}