tests: Add (guix http-client) tests.

* tests/http-client.scm: New file.
* Makefile.am (SCM_TESTS): Add it.
* .dir-locals.el (scheme-mode): Add 'with-http-server'.

.dir-locals.el

@@ -148,6 +148,8 @@
 
    (eval . (put 'with-shepherd-action 'scheme-indent-function 3))
 
+   (eval . (put 'with-http-server 'scheme-indent-function 1))
+
    ;; This notably allows '(' in Paredit to not insert a space when the
    ;; preceding symbol is one of these.
    (eval . (modify-syntax-entry ?~ "'"))

Makefile.am

@@ -1,5 +1,5 @@
 # GNU Guix --- Functional package management for GNU
-# Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 Ludovic Courtès <ludo@gnu.org>
+# Copyright © 2012-2022 Ludovic Courtès <ludo@gnu.org>
 # Copyright © 2013 Andreas Enge <andreas@enge.fr>
 # Copyright © 2015, 2017 Alex Kost <alezost@gmail.com>
 # Copyright © 2016, 2018 Mathieu Lirzin <mthl@gnu.org>
@@ -486,6 +486,7 @@ SCM_TESTS =					\
   tests/gremlin.scm				\
   tests/hackage.scm				\
   tests/home-import.scm				\
+  tests/http-client.scm				\
   tests/import-git.scm				\
   tests/import-github.scm			\
   tests/import-utils.scm			\

tests/http-client.scm

@@ -0,0 +1,84 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2022 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-http-client)
+  #:use-module (guix http-client)
+  #:use-module (guix tests http)
+  #:use-module (srfi srfi-1)
+  #:use-module (srfi srfi-34)
+  #:use-module (srfi srfi-64)
+  #:use-module (rnrs bytevectors)
+  #:use-module (rnrs io ports)
+  #:use-module (web response)
+  #:use-module (web uri))
+
+(test-begin "http-client")
+
+(test-equal "http-fetch, one request, binary"
+  (string->utf8 "Hello, world.")
+  (with-http-server `((200 "Hello, world."))
+    (let* ((port (http-fetch (%local-url)))
+           (bv   (get-bytevector-all port)))
+      (close-port port)
+      bv)))
+
+(test-equal "http-fetch, one request, text"
+  "Hello, world."
+  (with-http-server `((200 "Hello, world."))
+    (let* ((port (http-fetch (%local-url) #:text? #t))
+           (data (get-string-all port)))
+      (close-port port)
+      data)))
+
+(test-equal "http-fetch, redirect"
+  "Hello, world."
+  (with-http-server `((,(build-response
+                         #:code 301
+                         #:headers
+                         `((location
+                            . ,(string->uri-reference "/elsewhere")))
+                         #:reason-phrase "Moved")
+                       "Redirect!")
+                      (200 "Hello, world."))
+    (let* ((port (http-fetch (%local-url)))
+           (data (get-string-all port)))
+      (close-port port)
+      data)))
+
+(test-equal "http-fetch, error"
+  404
+  (with-http-server `((404 "Ne trovita."))
+    (guard (c ((http-get-error? c) (http-get-error-code c)))
+      (http-fetch (%local-url))
+      #f)))
+
+(test-equal "http-fetch, redirect + error"
+  403
+  (with-http-server `((,(build-response
+                         #:code 302
+                         #:headers
+                         `((location
+                            . ,(string->uri-reference "/elsewhere")))
+                         #:reason-phrase "Moved")
+                       "Redirect!")
+                      (403 "Verboten."))
+    (guard (c ((http-get-error? c) (http-get-error-code c)))
+      (http-fetch (%local-url))
+      #f)))
+
+(test-end "http-client")