build-system/julia: Enable tests.

* guix/build-system/julia.scm (julia-build): Set tests? default to #t.
* guix/build/julia-build-system.scm (check): Respect tests? and fix julia
  invocation.
  (%standard-phases): Add check phase after install.
* doc/guix.texi (julia-build-system): Update accordingly.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

3 files changed, 19 insertions, 12 deletions

diff --git a/doc/guix.texi b/doc/guix.texi
index ff9e8da2e0..219617e266 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -7616,7 +7616,7 @@ implements the build procedure used by @uref{https://julialang.org/,
 julia} packages, which essentially is similar to running @samp{julia -e
 'using Pkg; Pkg.add(package)'} in an environment where
 @env{JULIA_LOAD_PATH} contains the paths to all Julia package inputs.
-Tests are run with @code{Pkg.test}.
+Tests are run by calling @code{/test/runtests.jl}.
 
 Julia packages require the source @code{file-name} to be the real name of the
 package, correctly capitalized.
diff --git a/guix/build-system/julia.scm b/guix/build-system/julia.scm
index 488fe9bb1d..d3cb41c054 100644
--- a/guix/build-system/julia.scm
+++ b/guix/build-system/julia.scm
@@ -75,7 +75,7 @@
 
 (define* (julia-build store name inputs
                       #:key source
-                      (tests? #f)
+                      (tests? #t)
                       (phases '(@ (guix build julia-build-system)
                                   %standard-phases))
                       (outputs '("out"))
diff --git a/guix/build/julia-build-system.scm b/guix/build/julia-build-system.scm
index e8ebcf8ba0..61817e0b47 100644
--- a/guix/build/julia-build-system.scm
+++ b/guix/build/julia-build-system.scm
@@ -69,15 +69,22 @@
      (string-append "pushfirst!(DEPOT_PATH, pop!(DEPOT_PATH)); using " package)))
   #t)
 
-(define* (check #:key source inputs outputs #:allow-other-keys)
-  (let* ((out (assoc-ref outputs "out"))
-         (package (strip-store-file-name source))
-         (builddir (string-append out "/share/julia/")))
-    ;; With a patch, SOURCE_DATE_EPOCH is honored
-    (setenv "SOURCE_DATE_EPOCH" "1")
-    (setenv "JULIA_DEPOT_PATH" builddir)
-    (setenv "JULIA_LOAD_PATH" (string-append builddir "packages/"))
-    (invoke-julia (string-append "using Pkg;Pkg.test(\"" package "\")")))
+(define* (check #:key tests? source inputs outputs #:allow-other-keys)
+  (when tests?
+    (let* ((out (assoc-ref outputs "out"))
+           (package (strip-store-file-name source))
+           (builddir (string-append out "/share/julia/")))
+      ;; With a patch, SOURCE_DATE_EPOCH is honored
+      (setenv "SOURCE_DATE_EPOCH" "1")
+      (setenv "JULIA_DEPOT_PATH" builddir)
+      (setenv "JULIA_LOAD_PATH"
+              (string-append builddir "packages/" ":"
+                             (or (getenv "JULIA_LOAD_PATH")
+                                 "")))
+      (setenv "HOME" "/tmp")
+      (invoke "julia"
+              (string-append builddir "packages/"
+                             package "/test/runtests.jl"))))
   #t)
 
 (define (julia-create-package-toml outputs source
@@ -112,7 +119,7 @@ version = \"" version "\"
     (delete 'check) ; tests must be run after installation
     (replace 'install install)
     (add-after 'install 'precompile precompile)
-    ;; (add-after 'install 'check check)
+    (add-after 'install 'check check)
     ;; TODO: In the future we could add a "system-image-generation" phase
     ;; where we use PackageCompiler.jl to speed up package loading times
     (delete 'configure)