add the IP sanitize method

sanitize_test.go

@@ -6,7 +6,7 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-// TestInteger tests the integer sanitize method
+// TestInteger tests the Integer sanitize method
 func TestInteger(t *testing.T) {
 	t.Parallel()
 
@@ -26,14 +26,14 @@ func TestInteger(t *testing.T) {
 	}
 }
 
-// BenchmarkInteger benchmarks the integer method
+// BenchmarkInteger benchmarks the Integer method
 func BenchmarkInteger(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		_ = Integer("a-bc12.3def987asdf--")
 	}
 }
 
-// TestFloat tests the float sanitize method
+// TestFloat tests the Float sanitize method
 func TestFloat(t *testing.T) {
 	t.Parallel()
 
@@ -53,9 +53,41 @@ func TestFloat(t *testing.T) {
 	}
 }
 
-// BenchmarkFloat benchmarks the float method
+// BenchmarkFloat benchmarks the Float method
 func BenchmarkFloat(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		_ = Float("a-bc12.3def987asdf--")
 	}
 }
+
+// TestIP tests the IP sanitize method
+func TestIP(t *testing.T) {
+	t.Parallel()
+
+	var tests = []struct {
+		input    string
+		expected string
+	}{
+		{"192.168.0.1", "192.168.0.1"},
+		{"192.168.0.256", ""},
+		{"192.168", ""},
+		{"IP: 192.168.0.1", ""},
+		{"2001:0db8:85a3:0000:0000:8a2e:0370:7334", "2001:db8:85a3::8a2e:370:7334"},
+		{"2001:db8:0:0:1:0:0:1", "2001:db8::1:0:0:1"},
+		{"d8c4:e12f:eff7:df64:3995:df25:aaca:49eb", "d8c4:e12f:eff7:df64:3995:df25:aaca:49eb"},
+		{"6b71:3208:07ad:0629:a150:5734:15e8:950d", "6b71:3208:7ad:629:a150:5734:15e8:950d"},
+		{"::ffff:c000:0280", "192.0.2.128"},
+	}
+
+	for _, test := range tests {
+		output := IP(test.input)
+		assert.Equal(t, test.expected, output)
+	}
+}
+
+// BenchmarkIP benchmarks the IP method
+func BenchmarkIP(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		_ = IP("192.168.0.1")
+	}
+}