nil bulk string test

values_test.go

@@ -11,6 +11,12 @@ type valueTest struct {
 }
 
 func eq(v1, v2 value) bool {
+	if v1 == nil {
+		return v2 == nil
+	} else if v2 == nil {
+		return false
+	}
+
 	b1, b2 := getBytes(v1), getBytes(v2)
 	if len(b1) != len(b2) {
 		return false
@@ -44,7 +50,7 @@ var valueTests = []valueTest{
 	{"-one two ", Error("one two ")}, // trailing space
 	{"- one two", Error(" one two")}, // leading space
 
-	// {"$-1\r\n", nil},
+	{"$-1\r\n", nil},
 	// {"$0\r\n\r\n", BulkString("")}, // is this even a thing?
 	// {"$1\r\nx\r\n", BulkString("x")},
 	// {"$4\r\netsy\r\n", BulkString("etsy")},