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tests: do not hard code HTTP ports

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Previously, test cases could fail if some process was listening
at a hard-coded port.  This patch eliminates most of these potential
failures, by automatically assigning an unbound port.  This should
allow for building multiple guix trees in parallel outside a build
container, though this is currently untested.

The test "home-page: Connection refused" in tests/lint.scm still
hardcodes port 9999, however.

* guix/tests/http.scm
  (http-server-can-listen?): remove now unused procedure.
  (%http-server-port): default to port 0, meaning the OS
  will automatically choose a port.
  (open-http-server-socket): remove the false statement claiming
  this procedure is exported and also return the allocated port
  number.
  (%local-url): raise an error if the port is obviously unbound.
  (call-with-http-server): set %http-server-port to the allocated
  port while the thunk is called.
* tests/derivations.scm: adjust test cases to use automatically
  assign a port.  As there is no risk of a port conflict now,
  do not make any tests conditional upon 'http-server-can-listen?'
  anymore.
* tests/elpa.scm: likewise.
* tests/lint.scm: likewise, and add a TODO comment about a port
  that is still hard-coded.
* tests/texlive.scm: likewise.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>
This commit is contained in:
Maxime Devos 2021-02-20 22:04:59 +01:00 committed by Ludovic Courtès
parent 3182539875
commit c05ceaf2b6
No known key found for this signature in database
GPG key ID: 090B11993D9AEBB5
5 changed files with 118 additions and 146 deletions
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38
guix/tests/http.scm
View file

@ -1,5 +1,6 @@
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2014, 2015, 2016, 2017, 2019 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2021 Maxime Devos <maximedevos@telenet.be>
;;;
;;; This file is part of GNU Guix.
;;;
@ -21,12 +22,12 @@ (define-module (guix tests http)
#:use-module (web server)
#:use-module (web server http)
#:use-module (web response)
#:use-module (srfi srfi-11)
#:use-module (srfi srfi-39)
#:use-module (ice-9 match)
#:export (with-http-server
call-with-http-server
%http-server-port
http-server-can-listen?
%local-url))
;;; Commentary:
@ -37,12 +38,13 @@ (define-module (guix tests http)
(define %http-server-port
;; TCP port to use for the stub HTTP server.
(make-parameter 9999))
;; If 0, the OS will automatically choose
;; a port.
(make-parameter 0))
(define (open-http-server-socket)
"Return a listening socket for the web server. It is useful to export it so
that tests can check whether we succeeded opening the socket and tests skip if
needed."
"Return a listening socket for the web server and the port
actually listened at (in case %http-server-port was 0)."
(catch 'system-error
(lambda ()
(let ((sock (socket PF_INET SOCK_STREAM 0)))
@ -50,22 +52,18 @@ (define (open-http-server-socket)
(bind sock
(make-socket-address AF_INET INADDR_LOOPBACK
(%http-server-port)))
sock))
(values sock
(sockaddr:port (getsockname sock)))))
(lambda args
(let ((err (system-error-errno args)))
(format (current-error-port)
"warning: cannot run Web server for tests: ~a~%"
(strerror err))
#f))))
(define (http-server-can-listen?)
"Return #t if we managed to open a listening socket."
(and=> (open-http-server-socket)
(lambda (socket)
(close-port socket)
#t)))
(values #f #f)))))
(define* (%local-url #:optional (port (%http-server-port)))
(when (= port 0)
(error "no web server is running!"))
;; URL to use for 'home-page' tests.
(string-append "http://localhost:" (number->string port)
"/foo/bar"))
@ -73,7 +71,10 @@ (define* (%local-url #:optional (port (%http-server-port)))
(define* (call-with-http-server responses+data thunk)
"Call THUNK with an HTTP server running and returning RESPONSES+DATA on HTTP
requests. Each element of RESPONSES+DATA must be a tuple containing a
response and a string, or an HTTP response code and a string."
response and a string, or an HTTP response code and a string.
%http-server-port will be set to the port listened at
The port listened at will be set for the dynamic extent of THUNK."
(define responses
(map (match-lambda
(((? response? response) data)
@ -100,6 +101,7 @@ (define (http-write server client response body)
;; Mutex and condition variable to synchronize with the HTTP server.
(define %http-server-lock (make-mutex))
(define %http-server-ready (make-condition-variable))
(define %http-real-server-port #f)
(define (http-open . args)
"Start listening for HTTP requests and signal %HTTP-SERVER-READY."
@ -122,7 +124,8 @@ (define (handle request body)
(set! responses rest)
(values response data))))
(let ((socket (open-http-server-socket)))
(let-values (((socket port) (open-http-server-socket)))
(set! %http-real-server-port port)
(catch 'quit
(lambda ()
(run-server handle stub-http-server
@ -134,7 +137,8 @@ (define (handle request body)
(let ((server (make-thread server-body)))
(wait-condition-variable %http-server-ready %http-server-lock)
;; Normally SERVER exits automatically once it has received a request.
(thunk))))
(parameterize ((%http-server-port %http-real-server-port))
(thunk)))))
(define-syntax with-http-server
(syntax-rules ()

41
tests/derivations.scm
View file

@ -77,9 +77,6 @@ (define prefix-len (string-length dir))
(lambda (e1 e2)
(string<? (car e1) (car e2)))))
;; Avoid collisions with other tests.
(%http-server-port 10500)
(test-begin "derivations")
@ -205,8 +202,6 @@ (define prefix-len (string-length dir))
(build-derivations %store (list drv))
#f)))
(unless (http-server-can-listen?)
(test-skip 1))
(test-assert "'download' built-in builder"
(let ((text (random-text)))
(with-http-server `((200 ,text))
@ -221,8 +216,6 @@ (define prefix-len (string-length dir))
get-string-all)
text))))))
(unless (http-server-can-listen?)
(test-skip 1))
(test-assert "'download' built-in builder, invalid hash"
(with-http-server `((200 "hello, world!"))
(let* ((drv (derivation %store "world"
@ -236,8 +229,6 @@ (define prefix-len (string-length dir))
(build-derivations %store (list drv))
#f))))
(unless (http-server-can-listen?)
(test-skip 1))
(test-assert "'download' built-in builder, not found"
(with-http-server '((404 "not found"))
(let* ((drv (derivation %store "will-never-be-found"
@ -262,26 +253,24 @@ (define prefix-len (string-length dir))
(build-derivations %store (list drv))
#f)))
(unless (http-server-can-listen?)
(test-skip 1))
(test-assert "'download' built-in builder, check mode"
;; Make sure rebuilding the 'builtin:download' derivation in check mode
;; works. See <http://bugs.gnu.org/25089>.
(let* ((text (random-text))
(drv (derivation %store "world"
"builtin:download" '()
#:env-vars `(("url"
. ,(object->string (%local-url))))
#:hash-algo 'sha256
#:hash (gcrypt:sha256 (string->utf8 text)))))
(and (with-http-server `((200 ,text))
(build-derivations %store (list drv)))
(with-http-server `((200 ,text))
(build-derivations %store (list drv)
(build-mode check)))
(string=? (call-with-input-file (derivation->output-path drv)
get-string-all)
text))))
(let* ((text (random-text)))
(with-http-server `((200 ,text))
(let ((drv (derivation %store "world"
"builtin:download" '()
#:env-vars `(("url"
. ,(object->string (%local-url))))
#:hash-algo 'sha256
#:hash (gcrypt:sha256 (string->utf8 text)))))
(and drv (build-derivations %store (list drv))
(with-http-server `((200 ,text))
(build-derivations %store (list drv)
(build-mode check)))
(string=? (call-with-input-file (derivation->output-path drv)
get-string-all)
text))))))
(test-equal "derivation-name"
"foo-0.0"

3
tests/elpa.scm
View file

@ -40,9 +40,6 @@ (define elpa-mock-archive
nil "Integrated environment for *TeX*" tar
((:url . "http://www.gnu.org/software/auctex/"))])))
;; Avoid collisions with other tests.
(%http-server-port 10300)
(test-begin "elpa")
(define (eval-test-with-elpa pkg)

179
tests/lint.scm
View file

@ -62,7 +62,6 @@ (define-module (test-lint)
;; Test the linter.
;; Avoid collisions with other tests.
(%http-server-port 9999)
(define %null-sha256
;; SHA256 of the empty string.
@ -500,16 +499,16 @@ (define (warning-contains? str warnings)
(home-page "http://does-not-exist"))))
(warning-contains? "domain not found" (check-home-page pkg))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "home-page: Connection refused"
"URI http://localhost:9999/foo/bar unreachable: Connection refused"
(let ((pkg (package
(inherit (dummy-package "x"))
(home-page (%local-url)))))
(single-lint-warning-message
(check-home-page pkg))))
(parameterize ((%http-server-port 9999))
;; TODO skip this test if some process is currently listening at 9999
(test-equal "home-page: Connection refused"
"URI http://localhost:9999/foo/bar unreachable: Connection refused"
(let ((pkg (package
(inherit (dummy-package "x"))
(home-page (%local-url)))))
(single-lint-warning-message
(check-home-page pkg)))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "home-page: 200"
'()
(with-http-server `((200 ,%long-string))
@ -518,10 +517,10 @@ (define (warning-contains? str warnings)
(home-page (%local-url)))))
(check-home-page pkg))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "home-page: 200 but short length"
"URI http://localhost:9999/foo/bar returned suspiciously small file (18 bytes)"
(with-http-server `((200 "This is too small."))
(with-http-server `((200 "This is too small."))
(test-equal "home-page: 200 but short length"
(format #f "URI ~a returned suspiciously small file (18 bytes)"
(%local-url))
(let ((pkg (package
(inherit (dummy-package "x"))
(home-page (%local-url)))))
@ -529,54 +528,51 @@ (define (warning-contains? str warnings)
(single-lint-warning-message
(check-home-page pkg)))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "home-page: 404"
"URI http://localhost:9999/foo/bar not reachable: 404 (\"Such is life\")"
(with-http-server `((404 ,%long-string))
(with-http-server `((404 ,%long-string))
(test-equal "home-page: 404"
(format #f "URI ~a not reachable: 404 (\"Such is life\")" (%local-url))
(let ((pkg (package
(inherit (dummy-package "x"))
(home-page (%local-url)))))
(single-lint-warning-message
(check-home-page pkg)))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "home-page: 301, invalid"
"invalid permanent redirect from http://localhost:9999/foo/bar"
(with-http-server `((301 ,%long-string))
(with-http-server `((301 ,%long-string))
(test-equal "home-page: 301, invalid"
(format #f "invalid permanent redirect from ~a" (%local-url))
(let ((pkg (package
(inherit (dummy-package "x"))
(home-page (%local-url)))))
(single-lint-warning-message
(check-home-page pkg)))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "home-page: 301 -> 200"
"permanent redirect from http://localhost:10000/foo/bar to http://localhost:9999/foo/bar"
(with-http-server `((200 ,%long-string))
(let* ((initial-url (%local-url))
(redirect (build-response #:code 301
#:headers
`((location
. ,(string->uri initial-url))))))
(parameterize ((%http-server-port (+ 1 (%http-server-port))))
(with-http-server `((,redirect ""))
(with-http-server `((200 ,%long-string))
(let* ((initial-url (%local-url))
(redirect (build-response #:code 301
#:headers
`((location
. ,(string->uri initial-url))))))
(parameterize ((%http-server-port 0))
(with-http-server `((,redirect ""))
(test-equal "home-page: 301 -> 200"
(format #f "permanent redirect from ~a to ~a"
(%local-url) initial-url)
(let ((pkg (package
(inherit (dummy-package "x"))
(home-page (%local-url)))))
(single-lint-warning-message
(check-home-page pkg))))))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "home-page: 301 -> 404"
"URI http://localhost:10000/foo/bar not reachable: 404 (\"Such is life\")"
(with-http-server '((404 "booh!"))
(let* ((initial-url (%local-url))
(redirect (build-response #:code 301
#:headers
`((location
. ,(string->uri initial-url))))))
(parameterize ((%http-server-port (+ 1 (%http-server-port))))
(with-http-server `((,redirect ""))
(with-http-server `((404 "booh!"))
(let* ((initial-url (%local-url))
(redirect (build-response #:code 301
#:headers
`((location
. ,(string->uri initial-url))))))
(parameterize ((%http-server-port 0))
(with-http-server `((,redirect ""))
(test-equal "home-page: 301 -> 404"
(format #f "URI ~a not reachable: 404 (\"Such is life\")" (%local-url))
(let ((pkg (package
(inherit (dummy-package "x"))
(home-page (%local-url)))))
@ -706,7 +702,6 @@ (define (warning-contains? str warnings)
(sha256 %null-sha256))))))
(check-source-unstable-tarball pkg)))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "source: 200"
'()
(with-http-server `((200 ,%long-string))
@ -718,10 +713,10 @@ (define (warning-contains? str warnings)
(sha256 %null-sha256))))))
(check-source pkg))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "source: 200 but short length"
"URI http://localhost:9999/foo/bar returned suspiciously small file (18 bytes)"
(with-http-server '((200 "This is too small."))
(with-http-server '((200 "This is too small."))
(test-equal "source: 200 but short length"
(format #f "URI ~a returned suspiciously small file (18 bytes)"
(%local-url))
(let ((pkg (package
(inherit (dummy-package "x"))
(source (origin
@ -733,10 +728,10 @@ (define (warning-contains? str warnings)
(and (? lint-warning?) second-warning))
(lint-warning-message second-warning))))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "source: 404"
"URI http://localhost:9999/foo/bar not reachable: 404 (\"Such is life\")"
(with-http-server `((404 ,%long-string))
(with-http-server `((404 ,%long-string))
(test-equal "source: 404"
(format #f "URI ~a not reachable: 404 (\"Such is life\")"
(%local-url))
(let ((pkg (package
(inherit (dummy-package "x"))
(source (origin
@ -748,7 +743,6 @@ (define (warning-contains? str warnings)
(and (? lint-warning?) second-warning))
(lint-warning-message second-warning))))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "source: 404 and 200"
'()
(with-http-server `((404 ,%long-string))
@ -765,17 +759,17 @@ (define (warning-contains? str warnings)
;; list.
(check-source pkg)))))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "source: 301 -> 200"
"permanent redirect from http://localhost:10000/foo/bar to http://localhost:9999/foo/bar"
(with-http-server `((200 ,%long-string))
(let* ((initial-url (%local-url))
(redirect (build-response #:code 301
#:headers
`((location
. ,(string->uri initial-url))))))
(parameterize ((%http-server-port (+ 1 (%http-server-port))))
(with-http-server `((,redirect ""))
(with-http-server `((200 ,%long-string))
(let* ((initial-url (%local-url))
(redirect (build-response #:code 301
#:headers
`((location
. ,(string->uri initial-url))))))
(parameterize ((%http-server-port 0))
(with-http-server `((,redirect ""))
(test-equal "source: 301 -> 200"
(format #f "permanent redirect from ~a to ~a"
(%local-url) initial-url)
(let ((pkg (package
(inherit (dummy-package "x"))
(source (origin
@ -787,17 +781,17 @@ (define (warning-contains? str warnings)
(and (? lint-warning?) second-warning))
(lint-warning-message second-warning)))))))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "source, git-reference: 301 -> 200"
"permanent redirect from http://localhost:10000/foo/bar to http://localhost:9999/foo/bar"
(with-http-server `((200 ,%long-string))
(let* ((initial-url (%local-url))
(redirect (build-response #:code 301
#:headers
`((location
. ,(string->uri initial-url))))))
(parameterize ((%http-server-port (+ 1 (%http-server-port))))
(with-http-server `((,redirect ""))
(with-http-server `((200 ,%long-string))
(let* ((initial-url (%local-url))
(redirect (build-response #:code 301
#:headers
`((location
. ,(string->uri initial-url))))))
(parameterize ((%http-server-port 0))
(with-http-server `((,redirect ""))
(test-equal "source, git-reference: 301 -> 200"
(format #f "permanent redirect from ~a to ~a"
(%local-url) initial-url)
(let ((pkg (dummy-package
"x"
(source (origin
@ -807,17 +801,17 @@ (define (warning-contains? str warnings)
(sha256 %null-sha256))))))
(single-lint-warning-message (check-source pkg))))))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "source: 301 -> 404"
"URI http://localhost:10000/foo/bar not reachable: 404 (\"Such is life\")"
(with-http-server '((404 "booh!"))
(let* ((initial-url (%local-url))
(redirect (build-response #:code 301
#:headers
`((location
. ,(string->uri initial-url))))))
(parameterize ((%http-server-port (+ 1 (%http-server-port))))
(with-http-server `((,redirect ""))
(with-http-server '((404 "booh!"))
(let* ((initial-url (%local-url))
(redirect (build-response #:code 301
#:headers
`((location
. ,(string->uri initial-url))))))
(parameterize ((%http-server-port 0))
(with-http-server `((,redirect ""))
(test-equal "source: 301 -> 404"
(format #f "URI ~a not reachable: 404 (\"Such is life\")"
(%local-url))
(let ((pkg (package
(inherit (dummy-package "x"))
(source (origin
@ -847,7 +841,6 @@ (define (warning-contains? str warnings)
(single-lint-warning-message
(check-mirror-url (dummy-package "x" (source source))))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "github-url"
'()
(with-http-server `((200 ,%long-string))
@ -859,7 +852,6 @@ (define (warning-contains? str warnings)
(sha256 %null-sha256)))))))
(let ((github-url "https://github.com/foo/bar/bar-1.0.tar.gz"))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "github-url: one suggestion"
(string-append
"URL should be '" github-url "'")
@ -873,7 +865,7 @@ (define (warning-contains? str warnings)
#:headers
`((location
. ,(string->uri initial-url))))))
(parameterize ((%http-server-port (+ 1 (%http-server-port))))
(parameterize ((%http-server-port 0))
(with-http-server `((,redirect ""))
(single-lint-warning-message
(check-github-url
@ -883,7 +875,6 @@ (define (warning-contains? str warnings)
(uri (%local-url))
(sha256 %null-sha256))))))))))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "github-url: already the correct github url"
'()
(check-github-url
@ -1007,7 +998,6 @@ (define (warning-contains? str warnings)
'()
(check-formatting (dummy-package "x")))
(test-skip (if (http-server-can-listen?) 0 1))
(test-assert "archival: missing content"
(let* ((origin (origin
(method url-fetch)
@ -1019,7 +1009,6 @@ (define (warning-contains? str warnings)
(source origin)))))))
(warning-contains? "not archived" warnings)))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "archival: content available"
'()
(let* ((origin (origin
@ -1033,7 +1022,6 @@ (define (warning-contains? str warnings)
(parameterize ((%swh-base-url (%local-url)))
(check-archival (dummy-package "x" (source origin)))))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-assert "archival: missing revision"
(let* ((origin (origin
(method git-fetch)
@ -1053,7 +1041,6 @@ (define (warning-contains? str warnings)
(check-archival (dummy-package "x" (source origin)))))))
(warning-contains? "scheduled" warnings)))
(test-skip (if (http-server-can-listen?) 0 1))
(test-equal "archival: revision available"
'()
(let* ((origin (origin
@ -1069,7 +1056,6 @@ (define (warning-contains? str warnings)
(parameterize ((%swh-base-url (%local-url)))
(check-archival (dummy-package "x" (source origin)))))))
(test-skip (if (http-server-can-listen?) 0 1))
(test-assert "archival: rate limit reached"
;; We should get a single warning stating that the rate limit was reached,
;; and nothing more, in particular no other HTTP requests.
@ -1091,7 +1077,6 @@ (define (warning-contains? str warnings)
(string-contains (single-lint-warning-message warnings)
"rate limit reached")))
(test-skip (if (http-server-can-listen?) 0 1))
(test-assert "haskell-stackage"
(let* ((stackage (string-append "{ \"packages\": [{"
" \"name\":\"x\","

3
tests/texlive.scm
View file

@ -69,9 +69,6 @@ (define sxml
(keyval (@ (value "tests") (key "topic")))
"\n null\n")))
;; Avoid collisions with other tests.
(%http-server-port 10200)
(test-equal "fetch-sxml: returns SXML for valid XML"
sxml
(with-http-server `((200 ,xml))