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-rw-r--r--gnu/packages/check.scm50
1 files changed, 50 insertions, 0 deletions
diff --git a/gnu/packages/check.scm b/gnu/packages/check.scm
index a38abf0b5b..0be1102683 100644
--- a/gnu/packages/check.scm
+++ b/gnu/packages/check.scm
@@ -29,6 +29,7 @@
 ;;; Copyright © 2017, 2018 Ludovic Courtès <ludo@gnu.org>
 ;;; Copyright © 2018 Fis Trivial <ybbs.daans@hotmail.com>
 ;;; Copyright © 2019 Pierre Langlois <pierre.langlois@gmx.com>
+;;; Copyright © 2019 Chris Marusich <cmmarusich@gmail.com>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -2262,3 +2263,52 @@ record the properties and behaviour of particular devices, and to run a
 program or test suite under a test bed with the previously recorded devices
 loaded.")
     (license license:lgpl2.1+)))
+
+(define-public python-pyfakefs
+  (package
+    (name "python-pyfakefs")
+    (version "3.5.8")
+    (source (origin
+              (method url-fetch)
+              ;; We use the PyPI URL because there is no proper release
+              ;; available from GitHub.  The GitHub project only provides
+              ;; autogenerated tarballs, which are known to change in place.
+              (uri (pypi-uri "pyfakefs" version))
+              (sha256
+               (base32
+                "0qb9jp0bqhc0dv0rn805fv99029fvx135f3bvka6scfkcl6jgllc"))
+              (patches (search-patches
+                        "python-pyfakefs-remove-bad-test.patch"))
+              (file-name (string-append name "-" version ".tar.gz"))))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         ;; The default test suite does not run these extra tests.
+         (add-after 'check 'check-pytest-plugin
+           (lambda _
+             (invoke
+              "python" "-m" "pytest"
+              "pyfakefs/pytest_tests/pytest_plugin_test.py")
+             #t)))))
+    (native-inputs
+     `(("python-pytest" ,python-pytest)))
+    (build-system python-build-system)
+    ;; Guix lint doesn't like that this is a permanent redirect to the GitHub
+    ;; page, but the pyfakefs documentation asks us to use this specific URL
+    ;; when linking to the project.  Honor their request.
+    (home-page "http://pyfakefs.org/")
+    ;; TRANSLATORS: In the synopsis, "Mock" is a verb.
+    (synopsis "Mock file system interactions in tests")
+    (description
+     "This package provides a Python library intended for use in automated
+tests.  One difficulty when testing software is that the code under test might
+need to read or write to files in the local file system.  If the file system
+is not set up in just the right way, it might cause a spurious error during
+the test.  The pyfakefs library provides a solution to problems like this by
+mocking file system interactions.  In other words, it arranges for the code
+under test to interact with a fake file system instead of the real file
+system.  The code under test requires no modification to work with pyfakefs.")
+    (license license:asl2.0)))
+
+(define-public python2-pyfakefs
+  (package-with-python2 python-pyfakefs))