Added tests to the state package, and reworked the code around that

utils/clen_test.go

@@ -0,0 +1,26 @@
+package utils
+
+import "testing"
+
+func TestClen(t *testing.T) {
+	normalString := append([]byte("abcd"), 0)
+	type args struct {
+		n []byte
+	}
+	tests := []struct {
+		name string
+		args args
+		want int
+	}{
+		{"empty string", args{}, 0},
+		{"normal string", args{normalString}, 4},
+		{"non null terminated string", args{[]byte("abcd")}, 4},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := Clen(tt.args.n); got != tt.want {
+				t.Errorf("Clen() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}