have errors for too many requests too

internal/reddit/client.go

@@ -57,6 +57,7 @@ var (
 		401: ErrOauthRevoked,
 		403: ErrOauthRevoked,
 		404: ErrSubredditNotFound,
+		429: ErrTooManyRequests,
 	}
 )
 
@@ -426,6 +427,7 @@ func (rac *AuthenticatedClient) markRateLimited(rli *RateLimitingInfo) error {
 func (rac *AuthenticatedClient) RefreshTokens(ctx context.Context, opts ...RequestOption) (*RefreshTokenResponse, error) {
 	errmap := map[int]error{
 		400: ErrOauthRevoked,
+		429: ErrTooManyRequests,
 	}
 
 	opts = append(rac.client.defaultOpts, opts...)

internal/reddit/errors.go

@@ -31,4 +31,6 @@ var (
 	ErrSubredditIsQuarantined = errors.New("subreddit is quarantined")
 	// ErrSubredditNotFound .
 	ErrSubredditNotFound = errors.New("subreddit not found")
+	// ErrTooManyRequests .
+	ErrTooManyRequests = errors.New("too many requests")
 )