feat: Add bytes field to Value struct for Ints and Nils

The `Value` struct in the `value.go` file has been updated to include a new `bytes` field. This field is used to store the byte representation of the value. The `NewNilValue` function has also been updated to set the `bytes` field to `[]byte("$-1\r\n")`.

internal/resp/value/value.go

@@ -41,6 +41,7 @@ func NewIntegerValue(i int) Value {
 	return Value{
 		Type:    INTEGER,
 		integer: i,
+		bytes:   []byte(fmt.Sprintf("%d", i)),
 	}
 }
 
@@ -70,7 +71,8 @@ func NewArrayValue(arr []Value) Value {
 
 func NewNilValue() Value {
 	return Value{
-		Type: NIL,
+		Type:  NIL,
+		bytes: []byte("$-1\r\n"),
 	}
 }
 

internal/resp_assertions/ordered_array_assertion.go

@@ -34,9 +34,15 @@ func (a OrderedArrayAssertion) Run(value resp_value.Value) error {
 			return fmt.Errorf("Expected element #%d to be a %s, got %s", i+1, expectedValue.Type, actualElement.Type)
 		}
 
+		if expectedValue.Bytes() == nil {
+			// This should never happen, but just in case
+			// This is the case for ArrayValues
+			return fmt.Errorf("CodeCrafters internal error. expectedValue Bytes of type: %s is nil", expectedValue.Type)
+		}
+
 		// ToDo: Equal or EqualFold ?
 		if !bytes.Equal(actualElement.Bytes(), expectedValue.Bytes()) {
-			return fmt.Errorf("Expected element #%d to be %q, got %q", i+1, expectedValue.FormattedString(), actualElement.FormattedString())
+			return fmt.Errorf("Expected element #%d to be %s, got %s", i+1, expectedValue.FormattedString(), actualElement.FormattedString())
 		}
 	}