Factorize test suite support in (guix tests).

* guix/tests.scm: New file.
* Makefile.am (noinst_DATA): New variable.
  (GOBJECTS): Add guix/tests.go.
* tests/builders.scm (%store): Use 'open-connection-for-tests'
  from (guix tests).
* tests/derivations.scm: Likewise.
* tests/monads.scm: Likewise.
* tests/packages.scm: Likewise.
* tests/profiles.scm: Likewise.
* tests/union.scm: Likewise.
* tests/gexp.scm: Likewise.
  (guile-for-build): Remove.  Use (%guile-for-build) instead.
* tests/nar.scm (make-random-bytevector, %seed, random-text): Remove.
  (populate-file): Change 'make-random-bytevector' to 'random-bytevector'.
  Use (guix tests).
* tests/store.scm (%seed, random-text): Remove.
  Use (guix tests).

9 files changed, 23 insertions, 80 deletions

diff --git a/tests/builders.scm b/tests/builders.scm
index 0ed5d74a22..54cdeb6d7b 100644
--- a/tests/builders.scm
+++ b/tests/builders.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2012, 2013, 2014 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -25,6 +25,7 @@
   #:use-module (guix utils)
   #:use-module (guix base32)
   #:use-module (guix derivations)
+  #:use-module (guix tests)
   #:use-module ((guix packages)
                 #:select (package-derivation package-native-search-paths))
   #:use-module (gnu packages bootstrap)
@@ -35,11 +36,7 @@
 ;; Test the higher-level builders.
 
 (define %store
-  (false-if-exception (open-connection)))
-
-(when %store
-  ;; Make sure we build everything by ourselves.
-  (set-build-options %store #:use-substitutes? #f))
+  (open-connection-for-tests))
 
 (define %bootstrap-inputs
   ;; Use the bootstrap inputs so it doesn't take ages to run these tests.
diff --git a/tests/derivations.scm b/tests/derivations.scm
index 87609108d6..19bcebcb21 100644
--- a/tests/derivations.scm
+++ b/tests/derivations.scm
@@ -16,13 +16,13 @@
 ;;; 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-derivations)
   #:use-module (guix derivations)
   #:use-module (guix store)
   #:use-module (guix utils)
   #:use-module (guix hash)
   #:use-module (guix base32)
+  #:use-module (guix tests)
   #:use-module ((guix packages) #:select (package-derivation base32))
   #:use-module ((guix build utils) #:select (executable-file?))
   #:use-module ((gnu packages) #:select (search-bootstrap-binary))
@@ -42,15 +42,7 @@
   #:use-module (ice-9 match))
 
 (define %store
-  (false-if-exception (open-connection)))
-
-(when %store
-  ;; Make sure we build everything by ourselves.
-  (set-build-options %store #:use-substitutes? #f)
-
-  ;; By default, use %BOOTSTRAP-GUILE for the current system.
-  (let ((drv (package-derivation %store %bootstrap-guile)))
-    (%guile-for-build drv)))
+  (open-connection-for-tests))
 
 (define (bootstrap-binary name)
   (let ((bin (search-bootstrap-binary name (%current-system))))
diff --git a/tests/gexp.scm b/tests/gexp.scm
index 694bd409bc..bf52401c66 100644
--- a/tests/gexp.scm
+++ b/tests/gexp.scm
@@ -22,6 +22,7 @@
   #:use-module (guix gexp)
   #:use-module (guix derivations)
   #:use-module (guix packages)
+  #:use-module (guix tests)
   #:use-module (gnu packages)
   #:use-module (gnu packages base)
   #:use-module (gnu packages bootstrap)
@@ -35,28 +36,22 @@
 ;; Test the (guix gexp) module.
 
 (define %store
-  (open-connection))
+  (open-connection-for-tests))
 
 ;; For white-box testing.
 (define gexp-inputs (@@ (guix gexp) gexp-inputs))
 (define gexp-native-inputs (@@ (guix gexp) gexp-native-inputs))
 (define gexp->sexp  (@@ (guix gexp) gexp->sexp))
 
-(define guile-for-build
-  (package-derivation %store %bootstrap-guile))
-
-;; Make it the default.
-(%guile-for-build guile-for-build)
-
 (define* (gexp->sexp* exp #:optional target)
   (run-with-store %store (gexp->sexp exp
                                      #:target target)
-                  #:guile-for-build guile-for-build))
+                  #:guile-for-build (%guile-for-build)))
 
 (define-syntax-rule (test-assertm name exp)
   (test-assert name
     (run-with-store %store exp
-                    #:guile-for-build guile-for-build)))
+                    #:guile-for-build (%guile-for-build))))
 
 
 (test-begin "gexp")
@@ -330,7 +325,7 @@
                       (derivation-file-name xdrv)))))
 
 (define shebang
-  (string-append "#!" (derivation->output-path guile-for-build)
+  (string-append "#!" (derivation->output-path (%guile-for-build))
                  "/bin/guile --no-auto-compile"))
 
 ;; If we're going to hit the silly shebang limit (128 chars on Linux-based
diff --git a/tests/monads.scm b/tests/monads.scm
index b814b0f7c5..b31cabdb54 100644
--- a/tests/monads.scm
+++ b/tests/monads.scm
@@ -17,6 +17,7 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (test-monads)
+  #:use-module (guix tests)
   #:use-module (guix store)
   #:use-module (guix monads)
   #:use-module (guix derivations)
@@ -34,10 +35,7 @@
 ;; Test the (guix store) module.
 
 (define %store
-  (open-connection))
-
-;; Make sure we build everything by ourselves.
-(set-build-options %store #:use-substitutes? #f)
+  (open-connection-for-tests))
 
 (define %monads
   (list %identity-monad %store-monad))
diff --git a/tests/nar.scm b/tests/nar.scm
index 16a7845342..3188599bf1 100644
--- a/tests/nar.scm
+++ b/tests/nar.scm
@@ -17,6 +17,7 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (test-nar)
+  #:use-module (guix tests)
   #:use-module (guix nar)
   #:use-module (guix store)
   #:use-module ((guix hash)
@@ -134,19 +135,10 @@
                     input
                     lstat))
 
-(define (make-random-bytevector n)
-  (let ((bv (make-bytevector n)))
-    (let loop ((i 0))
-      (if (< i n)
-          (begin
-            (bytevector-u8-set! bv i (random 256))
-            (loop (1+ i)))
-          bv))))
-
 (define (populate-file file size)
   (call-with-output-file file
     (lambda (p)
-      (put-bytevector p (make-random-bytevector size)))))
+      (put-bytevector p (random-bytevector size)))))
 
 (define (rm-rf dir)
   (file-system-fold (const #t)                    ; enter?
@@ -166,13 +158,6 @@
   (string-append (dirname (search-path %load-path "pre-inst-env"))
                  "/test-nar-" (number->string (getpid))))
 
-;; XXX: Factorize.
-(define %seed
-  (seed->random-state (logxor (getpid) (car (gettimeofday)))))
-
-(define (random-text)
-  (number->string (random (expt 2 256) %seed) 16))
-
 (define-syntax-rule (let/ec k exp...)
   ;; This one appeared in Guile 2.0.9, so provide a copy here.
   (let ((tag (make-prompt-tag)))
diff --git a/tests/packages.scm b/tests/packages.scm
index 6ac215be4c..2a67f108ad 100644
--- a/tests/packages.scm
+++ b/tests/packages.scm
@@ -1,5 +1,5 @@
 ;;; GNU Guix --- Functional package management for GNU
-;;; Copyright © 2012, 2013 Ludovic Courtès <ludo@gnu.org>
+;;; Copyright © 2012, 2013, 2014 Ludovic Courtès <ludo@gnu.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -16,8 +16,8 @@
 ;;; 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-packages)
+  #:use-module (guix tests)
   #:use-module (guix store)
   #:use-module (guix utils)
   #:use-module (guix hash)
@@ -39,11 +39,8 @@
 ;; Test the high-level packaging layer.
 
 (define %store
-  (false-if-exception (open-connection)))
+  (open-connection-for-tests))
 
-(when %store
-  ;; Make sure we build everything by ourselves.
-  (set-build-options %store #:use-substitutes? #f))
 
 
 (test-begin "packages")
diff --git a/tests/profiles.scm b/tests/profiles.scm
index 8f14bf0d6f..047c5ba49b 100644
--- a/tests/profiles.scm
+++ b/tests/profiles.scm
@@ -18,6 +18,7 @@
 ;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.
 
 (define-module (test-profiles)
+  #:use-module (guix tests)
   #:use-module (guix profiles)
   #:use-module (guix store)
   #:use-module (guix monads)
@@ -30,14 +31,7 @@
 ;; Test the (guix profiles) module.
 
 (define %store
-  (open-connection))
-
-(define guile-for-build
-  (package-derivation %store %bootstrap-guile))
-
-;; Make it the default.
-(%guile-for-build guile-for-build)
-
+  (open-connection-for-tests))
 
 ;; Example manifest entries.
 
diff --git a/tests/store.scm b/tests/store.scm
index b0f609f818..ba15524be4 100644
--- a/tests/store.scm
+++ b/tests/store.scm
@@ -16,8 +16,8 @@
 ;;; 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-store)
+  #:use-module (guix tests)
   #:use-module (guix store)
   #:use-module (guix utils)
   #:use-module (guix hash)
@@ -40,17 +40,7 @@
 ;; Test the (guix store) module.
 
 (define %store
-  (false-if-exception (open-connection)))
-
-(when %store
-  ;; Make sure we build everything by ourselves.
-  (set-build-options %store #:use-substitutes? #f))
-
-(define %seed
-  (seed->random-state (logxor (getpid) (car (gettimeofday)))))
-
-(define (random-text)
-  (number->string (random (expt 2 256) %seed) 16))
+  (open-connection-for-tests))
 
 
 (test-begin "store")
diff --git a/tests/union.scm b/tests/union.scm
index 74c51cbed9..7e55670b86 100644
--- a/tests/union.scm
+++ b/tests/union.scm
@@ -16,8 +16,8 @@
 ;;; 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-union)
+  #:use-module (guix tests)
   #:use-module (guix store)
   #:use-module (guix utils)
   #:use-module (guix derivations)
@@ -34,12 +34,7 @@
 ;; Exercise the (guix build union) module.
 
 (define %store
-  (false-if-exception (open-connection)))
-
-(when %store
-  ;; By default, use %BOOTSTRAP-GUILE for the current system.
-  (let ((drv (package-derivation %store %bootstrap-guile)))
-    (%guile-for-build drv)))
+  (open-connection-for-tests))
 
 
 (test-begin "union")