[jackhill/guix/guix.git] / tests / graph.scm

;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (test-graph)
  #:use-module (guix tests)
  #:use-module (guix graph)
  #:use-module (guix scripts graph)
  #:use-module (guix packages)
  #:use-module (guix derivations)
  #:use-module (guix store)
  #:use-module (guix monads)
  #:use-module (guix grafts)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system trivial)
  #:use-module (guix gexp)
  #:use-module (guix utils)
  #:use-module (gnu packages)
  #:use-module (gnu packages base)
  #:use-module (gnu packages guile)
  #:use-module (gnu packages libunistring)
  #:use-module (gnu packages bootstrap)
  #:use-module (ice-9 match)
  #:use-module (srfi srfi-1)
  #:use-module (srfi srfi-11)
  #:use-module (srfi srfi-26)
  #:use-module (srfi srfi-64))

(define %store
  (open-connection-for-tests))

;; Globally disable grafts because they can trigger early builds.
(%graft? #f)

(define (make-recording-backend)
  "Return a <graph-backend> and a thunk that returns the recorded nodes and
edges."
  (let ((nodes '())
        (edges '()))
    (define (record-node id label port)
      (set! nodes (cons (list id label) nodes)))
    (define (record-edge source target port)
      (set! edges (cons (list source target) edges)))
    (define (return)
      (values (reverse nodes) (reverse edges)))

    (values (graph-backend "test" "This is the test backend."
                           (const #t) (const #t)
                           record-node record-edge)
            return)))

(define (package->tuple package)
  "Return a tuple representing PACKAGE as produced by %PACKAGE-NODE-TYPE."
  (list (object-address package)
        (package-full-name package)))

(define (edge->tuple source target)
  "Likewise for an edge from SOURCE to TARGET."
  (list (object-address source)
        (object-address target)))

\f
(test-begin "graph")

(test-assert "package DAG"
  (let-values (((backend nodes+edges) (make-recording-backend)))
    (let* ((p1 (dummy-package "p1"))
           (p2 (dummy-package "p2" (inputs `(("p1" ,p1)))))
           (p3 (dummy-package "p3" (inputs `(("p2" ,p2) ("p1", p1))))))
      (run-with-store %store
        (export-graph (list p3) 'port
                      #:node-type %package-node-type
                      #:backend backend))
      ;; We should see nothing more than these 3 packages.
      (let-values (((nodes edges) (nodes+edges)))
        (and (equal? nodes (map package->tuple (list p3 p2 p1)))
             (equal? edges
                     (map edge->tuple
                          (list p3 p3 p2)
                          (list p2 p1 p1))))))))

(test-assert "reverse package DAG"
  (let-values (((backend nodes+edges) (make-recording-backend)))
    (run-with-store %store
      (export-graph (list libunistring) 'port
                    #:node-type %reverse-package-node-type
                    #:backend backend))
    ;; We should see nothing more than these 3 packages.
    (let-values (((nodes edges) (nodes+edges)))
      (and (member (package->tuple guile-2.0) nodes)
           (->bool (member (edge->tuple libunistring guile-2.0) edges))))))

(test-assert "bag-emerged DAG"
  (let-values (((backend nodes+edges) (make-recording-backend)))
    (let* ((o        (dummy-origin (method (lambda _
                                             (text-file "foo" "bar")))))
           (p        (dummy-package "p" (source o)))
           (implicit (map (match-lambda
                            ((label package) package)
                            ((label package output) package))
                          (standard-packages))))
      (run-with-store %store
        (export-graph (list p) 'port
                      #:node-type %bag-emerged-node-type
                      #:backend backend))
      ;; We should see exactly P and IMPLICIT, with one edge from P to each
      ;; element of IMPLICIT.  O must not appear among NODES.  Note: IMPLICIT
      ;; contains "glibc" twice, once for "out" and a second time for
      ;; "static", hence the 'delete-duplicates' call below.
      (let-values (((nodes edges) (nodes+edges)))
        (and (equal? (match nodes
                       (((labels names) ...)
                        names))
                     (map package-full-name
                          (cons p (delete-duplicates implicit))))
             (equal? (match edges
                       (((sources destinations) ...)
                        (zip (map store-path-package-name sources)
                             (map store-path-package-name destinations))))
                     (map (lambda (destination)
                            (list "p-0.drv"
                                  (string-append
                                   (package-full-name destination "-")
                                   ".drv")))
                          implicit)))))))

(test-assert "bag DAG"                            ;a big town in Iraq
  (let-values (((backend nodes+edges) (make-recording-backend)))
    (let ((p (dummy-package "p")))
      (run-with-store %store
        (export-graph (list p) 'port
                      #:node-type %bag-node-type
                      #:backend backend))
      ;; We should see P, its implicit inputs as well as the whole DAG, which
      ;; should include bootstrap binaries.
      (let-values (((nodes edges) (nodes+edges)))
        (every (lambda (name)
                 (find (cut string=? name <>)
                       (match nodes
                         (((labels names) ...)
                          names))))
               (match %bootstrap-inputs
                 (((labels packages) ...)
                  (map package-full-name packages))))))))

(test-assert "bag DAG, including origins"
  (let-values (((backend nodes+edges) (make-recording-backend)))
    (let* ((m (lambda* (uri hash-type hash name #:key system)
                (text-file "foo-1.2.3.tar.gz" "This is a fake!")))
           (o (origin (method m) (uri "the-uri") (sha256 #vu8(0 1 2))))
           (p (dummy-package "p" (source o))))
      (run-with-store %store
        (export-graph (list p) 'port
                      #:node-type %bag-with-origins-node-type
                      #:backend backend))
      ;; We should see O among the nodes, with an edge coming from P.
      (let-values (((nodes edges) (nodes+edges)))
        (run-with-store %store
          (mlet %store-monad ((o* (lower-object o))
                              (p* (lower-object p))
                              (g  (lower-object (default-guile))))
            (return
             (and (find (match-lambda
                          ((file "the-uri") #t)
                          (_                #f))
                        nodes)
                  (find (match-lambda
                          ((source target)
                           (and (string=? source (derivation-file-name p*))
                                (string=? target o*))))
                        edges)

                  ;; There must also be an edge from O to G.
                  (find (match-lambda
                          ((source target)
                           (and (string=? source o*)
                                (string=? target (derivation-file-name g)))))
                        edges)))))))))

(test-assert "derivation DAG"
  (let-values (((backend nodes+edges) (make-recording-backend)))
    (run-with-store %store
      (mlet* %store-monad ((txt   (text-file "text-file" "Hello!"))
                           (guile (package->derivation %bootstrap-guile))
                           (drv   (gexp->derivation "output"
                                                    #~(symlink #$txt #$output)
                                                    #:guile-for-build
                                                    guile)))
        ;; We should get at least these 3 nodes and corresponding edges.
        (mbegin %store-monad
          (export-graph (list drv) 'port
                        #:node-type %derivation-node-type
                        #:backend backend)
          (let-values (((nodes edges) (nodes+edges)))
            ;; XXX: For some reason we need to throw in some 'basename'.
            (return (and (match nodes
                           (((ids labels) ...)
                            (let ((ids (map basename ids)))
                              (every (lambda (item)
                                       (member (basename item) ids))
                                     (list txt
                                           (derivation-file-name drv)
                                           (derivation-file-name guile))))))
                         (every (cut member <>
                                     (map (lambda (edge)
                                            (map basename edge))
                                          edges))
                                (list (map (compose basename derivation-file-name)
                                           (list drv guile))
                                      (list (basename (derivation-file-name drv))
                                            (basename txt))))))))))))

(test-assert "reference DAG"
  (let-values (((backend nodes+edges) (make-recording-backend)))
    (run-with-store %store
      (mlet* %store-monad ((txt   (text-file "text-file" "Hello!"))
                           (guile (package->derivation %bootstrap-guile))
                           (drv   (gexp->derivation "output"
                                                    #~(symlink #$txt #$output)
                                                    #:guile-for-build
                                                    guile))
                           (out -> (derivation->output-path drv)))
        ;; We should see only OUT and TXT, with an edge from the former to the
        ;; latter.
        (mbegin %store-monad
          (built-derivations (list drv))
          (export-graph (list (derivation->output-path drv)) 'port
                        #:node-type %reference-node-type
                        #:backend backend)
          (let-values (((nodes edges) (nodes+edges)))
            (return
             (and (equal? (match nodes
                            (((ids labels) ...)
                             ids))
                          (list out txt))
                  (equal? edges `((,out ,txt)))))))))))

(test-assert "referrer DAG"
  (let-values (((backend nodes+edges) (make-recording-backend)))
    (run-with-store %store
      (mlet* %store-monad ((txt   (text-file "referrer-node" (random-text)))
                           (drv   (gexp->derivation "referrer"
                                                    #~(symlink #$txt #$output)))
                           (out -> (derivation->output-path drv)))
        ;; We should see only TXT and OUT, with an edge from the former to the
        ;; latter.
        (mbegin %store-monad
          (built-derivations (list drv))
          (export-graph (list txt) 'port
                        #:node-type %referrer-node-type
                        #:backend backend)
          (let-values (((nodes edges) (nodes+edges)))
            (return
             (and (equal? (match nodes
                            (((ids labels) ...)
                             ids))
                          (list txt out))
                  (equal? edges `((,txt ,out)))))))))))

(test-assert "module graph"
  (let-values (((backend nodes+edges) (make-recording-backend)))
    (run-with-store %store
      (export-graph '((gnu packages guile)) 'port
                    #:node-type %module-node-type
                    #:backend backend))

    (let-values (((nodes edges) (nodes+edges)))
      (and (member '(gnu packages guile)
                   (match nodes
                     (((ids labels) ...) ids)))
           (->bool (and (member (list '(gnu packages guile)
                                      '(gnu packages libunistring))
                                edges)
                        (member (list '(gnu packages guile)
                                      '(gnu packages bdw-gc))
                                edges)))))))

(test-assert "node-edges"
  (run-with-store %store
    (let ((packages (fold-packages cons '())))
      (mlet %store-monad ((edges (node-edges %package-node-type packages)))
        (return (and (null? (edges hello))
                     (lset= eq?
                            (edges guile-2.0)
                            (match (package-direct-inputs guile-2.0)
                              (((labels packages _ ...) ...)
                               packages)))))))))

(test-assert "node-transitive-edges + node-back-edges"
  (run-with-store %store
    (let ((packages   (fold-packages cons '()))
          (bootstrap? (lambda (package)
                        (string-contains
                         (location-file (package-location package))
                         "bootstrap.scm")))
          (trivial?   (lambda (package)
                        (eq? (package-build-system package)
                             trivial-build-system))))
      (mlet %store-monad ((edges (node-back-edges %bag-node-type packages)))
        (let* ((glibc      (canonical-package glibc))
               (dependents (node-transitive-edges (list glibc) edges))
               (diff       (lset-difference eq? packages dependents)))
          ;; All the packages depend on libc, except bootstrap packages and
          ;; some that use TRIVIAL-BUILD-SYSTEM.
          (return (null? (remove (lambda (package)
                                   (or (trivial? package)
                                       (bootstrap? package)))
                                 diff))))))))

(test-assert "node-transitive-edges, no duplicates"
  (run-with-store %store
    (let* ((p0  (dummy-package "p0"))
           (p1a (dummy-package "p1a" (inputs `(("p0" ,p0)))))
           (p1b (dummy-package "p1b" (inputs `(("p0" ,p0)))))
           (p2  (dummy-package "p2" (inputs `(("p1a" ,p1a) ("p1b" ,p1b))))))
      (mlet %store-monad ((edges (node-edges %package-node-type
                                             (list p2 p1a p1b p0))))
        (return (lset= eq? (node-transitive-edges (list p2) edges)
                       (list p1a p1b p0)))))))

(test-equal "node-reachable-count"
  '(3 3)
  (run-with-store %store
    (let* ((p0  (dummy-package "p0"))
           (p1a (dummy-package "p1a" (inputs `(("p0" ,p0)))))
           (p1b (dummy-package "p1b" (inputs `(("p0" ,p0)))))
           (p2  (dummy-package "p2" (inputs `(("p1a" ,p1a) ("p1b" ,p1b))))))
      (mlet* %store-monad ((all -> (list p2 p1a p1b p0))
                           (edges  (node-edges %package-node-type all))
                           (back   (node-back-edges %package-node-type all)))
        (return (list (node-reachable-count (list p2) edges)
                      (node-reachable-count (list p0) back)))))))

(test-end "graph")
Commit	Line	Data
88856916	1	;;; GNU Guix --- Functional package management for GNU
b06a70e0	2	;;; Copyright © 2015, 2016, 2017, 2018 Ludovic Courtès <ludo@gnu.org>
88856916 LC	3	;;;
	4	;;; This file is part of GNU Guix.
	5	;;;
	6	;;; GNU Guix is free software; you can redistribute it and/or modify it
	7	;;; under the terms of the GNU General Public License as published by
	8	;;; the Free Software Foundation; either version 3 of the License, or (at
	9	;;; your option) any later version.
	10	;;;
	11	;;; GNU Guix is distributed in the hope that it will be useful, but
	12	;;; WITHOUT ANY WARRANTY; without even the implied warranty of
	13	;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	;;; GNU General Public License for more details.
	15	;;;
	16	;;; You should have received a copy of the GNU General Public License
	17	;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
	18
	19	(define-module (test-graph)
	20	#:use-module (guix tests)
8fb58371	21	#:use-module (guix graph)
88856916 LC	22	#:use-module (guix scripts graph)
	23	#:use-module (guix packages)
	24	#:use-module (guix derivations)
	25	#:use-module (guix store)
	26	#:use-module (guix monads)
ef8de985	27	#:use-module (guix grafts)
88856916	28	#:use-module (guix build-system gnu)
923d846c	29	#:use-module (guix build-system trivial)
88856916	30	#:use-module (guix gexp)
923d846c	31	#:use-module (guix utils)
88856916	32	#:use-module (gnu packages)
923d846c LC	33	#:use-module (gnu packages base)
923d846c LC	34	#:use-module (gnu packages guile)
b96a0640	35	#:use-module (gnu packages libunistring)
88856916 LC	36	#:use-module (gnu packages bootstrap)
	37	#:use-module (ice-9 match)
	38	#:use-module (srfi srfi-1)
	39	#:use-module (srfi srfi-11)
	40	#:use-module (srfi srfi-26)
	41	#:use-module (srfi srfi-64))
	42
	43	(define %store
	44	(open-connection-for-tests))
	45
ef8de985 LC	46	;; Globally disable grafts because they can trigger early builds.
	47	(%graft? #f)
	48
88856916 LC	49	(define (make-recording-backend)
	50	"Return a <graph-backend> and a thunk that returns the recorded nodes and
	51	edges."
	52	(let ((nodes '())
	53	(edges '()))
	54	(define (record-node id label port)
	55	(set! nodes (cons (list id label) nodes)))
	56	(define (record-edge source target port)
	57	(set! edges (cons (list source target) edges)))
	58	(define (return)
	59	(values (reverse nodes) (reverse edges)))
	60
51377437 RW	61	(values (graph-backend "test" "This is the test backend."
51377437 RW	62	(const #t) (const #t)
88856916 LC	63	record-node record-edge)
	64	return)))
	65
	66	(define (package->tuple package)
	67	"Return a tuple representing PACKAGE as produced by %PACKAGE-NODE-TYPE."
	68	(list (object-address package)
	69	(package-full-name package)))
	70
	71	(define (edge->tuple source target)
	72	"Likewise for an edge from SOURCE to TARGET."
	73	(list (object-address source)
	74	(object-address target)))
	75
	76	\f
	77	(test-begin "graph")
	78
	79	(test-assert "package DAG"
	80	(let-values (((backend nodes+edges) (make-recording-backend)))
	81	(let* ((p1 (dummy-package "p1"))
	82	(p2 (dummy-package "p2" (inputs `(("p1" ,p1)))))
	83	(p3 (dummy-package "p3" (inputs `(("p2" ,p2) ("p1", p1))))))
	84	(run-with-store %store
	85	(export-graph (list p3) 'port
	86	#:node-type %package-node-type
	87	#:backend backend))
	88	;; We should see nothing more than these 3 packages.
	89	(let-values (((nodes edges) (nodes+edges)))
	90	(and (equal? nodes (map package->tuple (list p3 p2 p1)))
	91	(equal? edges
	92	(map edge->tuple
	93	(list p3 p3 p2)
	94	(list p2 p1 p1))))))))
	95
b96a0640 LC	96	(test-assert "reverse package DAG"
	97	(let-values (((backend nodes+edges) (make-recording-backend)))
	98	(run-with-store %store
	99	(export-graph (list libunistring) 'port
	100	#:node-type %reverse-package-node-type
	101	#:backend backend))
	102	;; We should see nothing more than these 3 packages.
	103	(let-values (((nodes edges) (nodes+edges)))
	104	(and (member (package->tuple guile-2.0) nodes)
	105	(->bool (member (edge->tuple libunistring guile-2.0) edges))))))
	106
88856916 LC	107	(test-assert "bag-emerged DAG"
88856916 LC	108	(let-values (((backend nodes+edges) (make-recording-backend)))
f88282af LC	109	(let* ((o (dummy-origin (method (lambda _
	110	(text-file "foo" "bar")))))
	111	(p (dummy-package "p" (source o)))
	112	(implicit (map (match-lambda
cafc97e2 LC	113	((label package) package)
cafc97e2 LC	114	((label package output) package))
f88282af	115	(standard-packages))))
88856916 LC	116	(run-with-store %store
	117	(export-graph (list p) 'port
	118	#:node-type %bag-emerged-node-type
	119	#:backend backend))
	120	;; We should see exactly P and IMPLICIT, with one edge from P to each
cafc97e2 LC	121	;; element of IMPLICIT. O must not appear among NODES. Note: IMPLICIT
	122	;; contains "glibc" twice, once for "out" and a second time for
	123	;; "static", hence the 'delete-duplicates' call below.
88856916 LC	124	(let-values (((nodes edges) (nodes+edges)))
	125	(and (equal? (match nodes
	126	(((labels names) ...)
	127	names))
cafc97e2 LC	128	(map package-full-name
cafc97e2 LC	129	(cons p (delete-duplicates implicit))))
88856916 LC	130	(equal? (match edges
	131	(((sources destinations) ...)
	132	(zip (map store-path-package-name sources)
	133	(map store-path-package-name destinations))))
	134	(map (lambda (destination)
	135	(list "p-0.drv"
	136	(string-append
ede121de	137	(package-full-name destination "-")
88856916 LC	138	".drv")))
	139	implicit)))))))
	140
923d846c	141	(test-assert "bag DAG" ;a big town in Iraq
88856916 LC	142	(let-values (((backend nodes+edges) (make-recording-backend)))
	143	(let ((p (dummy-package "p")))
	144	(run-with-store %store
	145	(export-graph (list p) 'port
	146	#:node-type %bag-node-type
	147	#:backend backend))
	148	;; We should see P, its implicit inputs as well as the whole DAG, which
	149	;; should include bootstrap binaries.
	150	(let-values (((nodes edges) (nodes+edges)))
	151	(every (lambda (name)
	152	(find (cut string=? name <>)
	153	(match nodes
	154	(((labels names) ...)
	155	names))))
	156	(match %bootstrap-inputs
	157	(((labels packages) ...)
	158	(map package-full-name packages))))))))
	159
38b92daa LC	160	(test-assert "bag DAG, including origins"
	161	(let-values (((backend nodes+edges) (make-recording-backend)))
	162	(let* ((m (lambda* (uri hash-type hash name #:key system)
	163	(text-file "foo-1.2.3.tar.gz" "This is a fake!")))
	164	(o (origin (method m) (uri "the-uri") (sha256 #vu8(0 1 2))))
	165	(p (dummy-package "p" (source o))))
	166	(run-with-store %store
	167	(export-graph (list p) 'port
	168	#:node-type %bag-with-origins-node-type
	169	#:backend backend))
	170	;; We should see O among the nodes, with an edge coming from P.
	171	(let-values (((nodes edges) (nodes+edges)))
	172	(run-with-store %store
	173	(mlet %store-monad ((o* (lower-object o))
51385362 LC	174	(p* (lower-object p))
51385362 LC	175	(g (lower-object (default-guile))))
38b92daa LC	176	(return
	177	(and (find (match-lambda
	178	((file "the-uri") #t)
	179	(_ #f))
	180	nodes)
	181	(find (match-lambda
	182	((source target)
	183	(and (string=? source (derivation-file-name p*))
	184	(string=? target o*))))
51385362 LC	185	edges)
	186
	187	;; There must also be an edge from O to G.
	188	(find (match-lambda
	189	((source target)
	190	(and (string=? source o*)
	191	(string=? target (derivation-file-name g)))))
38b92daa LC	192	edges)))))))))
38b92daa LC	193
88856916 LC	194	(test-assert "derivation DAG"
	195	(let-values (((backend nodes+edges) (make-recording-backend)))
	196	(run-with-store %store
	197	(mlet* %store-monad ((txt (text-file "text-file" "Hello!"))
	198	(guile (package->derivation %bootstrap-guile))
	199	(drv (gexp->derivation "output"
	200	#~(symlink #$txt #$output)
	201	#:guile-for-build
	202	guile)))
	203	;; We should get at least these 3 nodes and corresponding edges.
	204	(mbegin %store-monad
	205	(export-graph (list drv) 'port
	206	#:node-type %derivation-node-type
	207	#:backend backend)
	208	(let-values (((nodes edges) (nodes+edges)))
	209	;; XXX: For some reason we need to throw in some 'basename'.
	210	(return (and (match nodes
	211	(((ids labels) ...)
	212	(let ((ids (map basename ids)))
	213	(every (lambda (item)
	214	(member (basename item) ids))
	215	(list txt
	216	(derivation-file-name drv)
	217	(derivation-file-name guile))))))
	218	(every (cut member <>
	219	(map (lambda (edge)
	220	(map basename edge))
	221	edges))
	222	(list (map (compose basename derivation-file-name)
	223	(list drv guile))
	224	(list (basename (derivation-file-name drv))
	225	(basename txt))))))))))))
	226
	227	(test-assert "reference DAG"
	228	(let-values (((backend nodes+edges) (make-recording-backend)))
	229	(run-with-store %store
	230	(mlet* %store-monad ((txt (text-file "text-file" "Hello!"))
	231	(guile (package->derivation %bootstrap-guile))
	232	(drv (gexp->derivation "output"
	233	#~(symlink #$txt #$output)
	234	#:guile-for-build
	235	guile))
	236	(out -> (derivation->output-path drv)))
	237	;; We should see only OUT and TXT, with an edge from the former to the
	238	;; latter.
	239	(mbegin %store-monad
	240	(built-derivations (list drv))
	241	(export-graph (list (derivation->output-path drv)) 'port
	242	#:node-type %reference-node-type
	243	#:backend backend)
	244	(let-values (((nodes edges) (nodes+edges)))
	245	(return
	246	(and (equal? (match nodes
	247	(((ids labels) ...)
	248	ids))
	249	(list out txt))
	250	(equal? edges `((,out ,txt)))))))))))
	251
7f8fec0f LC	252	(test-assert "referrer DAG"
	253	(let-values (((backend nodes+edges) (make-recording-backend)))
	254	(run-with-store %store
	255	(mlet* %store-monad ((txt (text-file "referrer-node" (random-text)))
	256	(drv (gexp->derivation "referrer"
	257	#~(symlink #$txt #$output)))
	258	(out -> (derivation->output-path drv)))
	259	;; We should see only TXT and OUT, with an edge from the former to the
	260	;; latter.
	261	(mbegin %store-monad
	262	(built-derivations (list drv))
	263	(export-graph (list txt) 'port
	264	#:node-type %referrer-node-type
	265	#:backend backend)
	266	(let-values (((nodes edges) (nodes+edges)))
	267	(return
	268	(and (equal? (match nodes
	269	(((ids labels) ...)
	270	ids))
	271	(list txt out))
	272	(equal? edges `((,txt ,out)))))))))))
	273
b06a70e0 LC	274	(test-assert "module graph"
	275	(let-values (((backend nodes+edges) (make-recording-backend)))
	276	(run-with-store %store
	277	(export-graph '((gnu packages guile)) 'port
	278	#:node-type %module-node-type
	279	#:backend backend))
	280
	281	(let-values (((nodes edges) (nodes+edges)))
	282	(and (member '(gnu packages guile)
	283	(match nodes
	284	(((ids labels) ...) ids)))
	285	(->bool (and (member (list '(gnu packages guile)
	286	'(gnu packages libunistring))
	287	edges)
	288	(member (list '(gnu packages guile)
	289	'(gnu packages bdw-gc))
	290	edges)))))))
	291
923d846c LC	292	(test-assert "node-edges"
	293	(run-with-store %store
	294	(let ((packages (fold-packages cons '())))
	295	(mlet %store-monad ((edges (node-edges %package-node-type packages)))
a99b0ad7	296	(return (and (null? (edges hello))
923d846c LC	297	(lset= eq?
	298	(edges guile-2.0)
	299	(match (package-direct-inputs guile-2.0)
	300	(((labels packages _ ...) ...)
	301	packages)))))))))
	302
	303	(test-assert "node-transitive-edges + node-back-edges"
	304	(run-with-store %store
	305	(let ((packages (fold-packages cons '()))
	306	(bootstrap? (lambda (package)
	307	(string-contains
	308	(location-file (package-location package))
	309	"bootstrap.scm")))
	310	(trivial? (lambda (package)
	311	(eq? (package-build-system package)
	312	trivial-build-system))))
	313	(mlet %store-monad ((edges (node-back-edges %bag-node-type packages)))
	314	(let* ((glibc (canonical-package glibc))
	315	(dependents (node-transitive-edges (list glibc) edges))
	316	(diff (lset-difference eq? packages dependents)))
	317	;; All the packages depend on libc, except bootstrap packages and
	318	;; some that use TRIVIAL-BUILD-SYSTEM.
	319	(return (null? (remove (lambda (package)
	320	(or (trivial? package)
	321	(bootstrap? package)))
	322	diff))))))))
	323
88d5858f LC	324	(test-assert "node-transitive-edges, no duplicates"
	325	(run-with-store %store
	326	(let* ((p0 (dummy-package "p0"))
	327	(p1a (dummy-package "p1a" (inputs `(("p0" ,p0)))))
	328	(p1b (dummy-package "p1b" (inputs `(("p0" ,p0)))))
	329	(p2 (dummy-package "p2" (inputs `(("p1a" ,p1a) ("p1b" ,p1b))))))
	330	(mlet %store-monad ((edges (node-edges %package-node-type
	331	(list p2 p1a p1b p0))))
	332	(return (lset= eq? (node-transitive-edges (list p2) edges)
	333	(list p1a p1b p0)))))))
	334
e144e342 LC	335	(test-equal "node-reachable-count"
	336	'(3 3)
	337	(run-with-store %store
	338	(let* ((p0 (dummy-package "p0"))
	339	(p1a (dummy-package "p1a" (inputs `(("p0" ,p0)))))
	340	(p1b (dummy-package "p1b" (inputs `(("p0" ,p0)))))
	341	(p2 (dummy-package "p2" (inputs `(("p1a" ,p1a) ("p1b" ,p1b))))))
	342	(mlet* %store-monad ((all -> (list p2 p1a p1b p0))
	343	(edges (node-edges %package-node-type all))
	344	(back (node-back-edges %package-node-type all)))
	345	(return (list (node-reachable-count (list p2) edges)
	346	(node-reachable-count (list p0) back)))))))
	347
88856916	348	(test-end "graph")