diff options
Diffstat (limited to 'tests')
| -rw-r--r-- | tests/packages.scm | 36 |
1 files changed, 24 insertions, 12 deletions
diff --git a/tests/packages.scm b/tests/packages.scm index 18e8e16e74..2a290bc353 100644 --- a/tests/packages.scm +++ b/tests/packages.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org> ;;; Copyright © Jan (janneke) Nieuwenhuizen <janneke@gnu.org> ;;; ;;; This file is part of GNU Guix. @@ -42,6 +42,7 @@ #:use-module (guix memoization) #:use-module (guix profiles) #:use-module (guix scripts package) + #:use-module (guix sets) #:use-module (gnu packages) #:use-module (gnu packages base) #:use-module (gnu packages guile) @@ -54,6 +55,7 @@ #:use-module (srfi srfi-34) #:use-module (srfi srfi-35) #:use-module (srfi srfi-64) + #:use-module (srfi srfi-71) #:use-module (rnrs bytevectors) #:use-module (rnrs io ports) #:use-module (ice-9 vlist) @@ -1549,17 +1551,27 @@ result)) '())))))) - (define (find-duplicates l) - (match l - (() '()) - ((head . tail) - (if (member head tail) - (cons head (find-duplicates tail)) - (find-duplicates tail))))) - - (pk (find-duplicates from-cache)) - (and (equal? (delete-duplicates from-cache) from-cache) - (lset= equal? no-cache from-cache)))) + (define (list->set* lst) + ;; Return two values: LST represented as a set and the list of + ;; duplicates in LST. + (let loop ((lst lst) + (duplicates '()) + (seen (set))) + (match lst + (() + (values seen duplicates)) + ((head . tail) + (if (set-contains? seen head) + (loop tail (cons head duplicates) seen) + (loop tail duplicates (set-insert head seen))))))) + + ;; Compare FROM-CACHE and NO-CACHE but avoid 'lset=', which exhibits + ;; exponential behavior. + (let ((set1 duplicates1 (list->set* from-cache)) + (set2 duplicates2 (list->set* no-cache))) + (and (null? duplicates1) (null? duplicates2) + (every (cut set-contains? set1 <>) no-cache) + (every (cut set-contains? set2 <>) from-cache))))) (test-assert "find-packages-by-name" (match (find-packages-by-name "hello") |