import: opam: Avoid uses of '@@' in tests.

* guix/import/opam.scm (string-pat, multiline-string, list-pat)
(dict, condition): Export.
(opam-fetch): Add optional 'repository' parameter.
(opam->guix-package): Add #:repository parameter and pass it to
'opam-fetch'.
* tests/opam.scm ("opam->guix-package"): Remove use of 'mock' and pass
TEST-REPO to 'opam->guix-package' instead.
("parse-strings", "parse-multiline-strings")
("parse-lists", "parse-dicts", "parse-conditions"): Remove uses of '@@',
which are no longer needed.

2 files changed, 48 insertions, 40 deletions

diff --git a/guix/import/opam.scm b/guix/import/opam.scm
index e258c4197f..394415fdd4 100644
--- a/guix/import/opam.scm
+++ b/guix/import/opam.scm
@@ -1,3 +1,4 @@
+;;; GNU Guix --- Functional package management for GNU
 ;;; Copyright © 2018 Julien Lepiller <julien@lepiller.eu>
 ;;;
 ;;; This file is part of GNU Guix.
@@ -38,7 +39,14 @@
   #:use-module ((guix licenses) #:prefix license:)
   #:export (opam->guix-package
             opam-recursive-import
-            %opam-updater))
+            %opam-updater
+
+            ;; The following patterns are exported for testing purposes.
+            string-pat
+            multiline-string
+            list-pat
+            dict
+            condition))
 
 ;; Define a PEG parser for the opam format
 (define-peg-pattern comment none (and "#" (* STRCHR) "\n"))
@@ -233,8 +241,8 @@ path to the repository."
       (list dependency (list 'unquote (string->symbol dependency))))
     (ocaml-names->guix-names lst)))
 
-(define (opam-fetch name)
-  (and-let* ((repository (get-opam-repository))
+(define* (opam-fetch name #:optional (repository (get-opam-repository)))
+  (and-let* ((repository repository)
              (version (find-latest-version name repository))
              (file (string-append repository "/packages/" name "/" name "." version "/opam")))
     `(("metadata" ,@(get-metadata file))
@@ -242,8 +250,11 @@ path to the repository."
                         (substring version 1)
                         version)))))
 
-(define (opam->guix-package name)
-  (and-let* ((opam-file (opam-fetch name))
+(define* (opam->guix-package name #:key repository)
+  "Import OPAM package NAME from REPOSITORY (a directory name) or, if
+REPOSITORY is #f, from the official OPAM repository.  Return a 'package' sexp
+or #f on failure."
+  (and-let* ((opam-file (opam-fetch name repository))
              (version (assoc-ref opam-file "version"))
              (opam-content (assoc-ref opam-file "metadata"))
              (url-dict (metadata-ref opam-content "url"))
diff --git a/tests/opam.scm b/tests/opam.scm
index d3626fd010..68b5908e3f 100644
--- a/tests/opam.scm
+++ b/tests/opam.scm
@@ -85,36 +85,33 @@ url {
         (with-output-to-file (string-append my-package "/opam")
           (lambda _
             (format #t "~a" test-opam-file))))
-      (mock ((guix import opam) get-opam-repository
-             (lambda _
-               test-repo))
-        (match (opam->guix-package "foo")
-          (('package
-             ('name "ocaml-foo")
-             ('version "1.0.0")
-             ('source ('origin
-                        ('method 'url-fetch)
-                        ('uri "https://example.org/foo-1.0.0.tar.gz")
-                        ('sha256
-                         ('base32
-                          (? string? hash)))))
-             ('build-system 'ocaml-build-system)
-             ('propagated-inputs
-              ('quasiquote
-               (("ocaml-zarith" ('unquote 'ocaml-zarith)))))
-             ('native-inputs
-              ('quasiquote
-               (("ocaml-alcotest" ('unquote 'ocaml-alcotest))
-                ("ocamlbuild" ('unquote 'ocamlbuild)))))
-             ('home-page "https://example.org/")
-             ('synopsis "Some example package")
-             ('description "This package is just an example.")
-             ('license #f))
-           (string=? (bytevector->nix-base32-string
-                      test-source-hash)
-                     hash))
-          (x
-           (pk 'fail x #f))))))
+      (match (opam->guix-package "foo" #:repository test-repo)
+        (('package
+           ('name "ocaml-foo")
+           ('version "1.0.0")
+           ('source ('origin
+                      ('method 'url-fetch)
+                      ('uri "https://example.org/foo-1.0.0.tar.gz")
+                      ('sha256
+                       ('base32
+                        (? string? hash)))))
+           ('build-system 'ocaml-build-system)
+           ('propagated-inputs
+            ('quasiquote
+             (("ocaml-zarith" ('unquote 'ocaml-zarith)))))
+           ('native-inputs
+            ('quasiquote
+             (("ocaml-alcotest" ('unquote 'ocaml-alcotest))
+              ("ocamlbuild" ('unquote 'ocamlbuild)))))
+           ('home-page "https://example.org/")
+           ('synopsis "Some example package")
+           ('description "This package is just an example.")
+           ('license #f))
+         (string=? (bytevector->nix-base32-string
+                    test-source-hash)
+                   hash))
+        (x
+         (pk 'fail x #f)))))
 
 ;; Test the opam file parser
 ;; We fold over some test cases. Each case is a pair of the string to parse and the
@@ -123,7 +120,7 @@ url {
   (fold (lambda (test acc)
           (display test) (newline)
           (and acc
-               (let ((result (peg:tree (match-pattern (@@ (guix import opam) string-pat) (car test)))))
+               (let ((result (peg:tree (match-pattern string-pat (car test)))))
                  (if (equal? result (cdr test))
                    #t
                    (pk 'fail (list (car test) result (cdr test)) #f)))))
@@ -138,7 +135,7 @@ url {
   (fold (lambda (test acc)
           (display test) (newline)
           (and acc
-               (let ((result (peg:tree (match-pattern (@@ (guix import opam) multiline-string) (car test)))))
+               (let ((result (peg:tree (match-pattern multiline-string (car test)))))
                  (if (equal? result (cdr test))
                    #t
                    (pk 'fail (list (car test) result (cdr test)) #f)))))
@@ -150,7 +147,7 @@ url {
 (test-assert "parse-lists"
   (fold (lambda (test acc)
           (and acc
-               (let ((result (peg:tree (match-pattern (@@ (guix import opam) list-pat) (car test)))))
+               (let ((result (peg:tree (match-pattern list-pat (car test)))))
                  (if (equal? result (cdr test))
                    #t
                    (pk 'fail (list (car test) result (cdr test)) #f)))))
@@ -164,7 +161,7 @@ url {
 (test-assert "parse-dicts"
   (fold (lambda (test acc)
           (and acc
-               (let ((result (peg:tree (match-pattern (@@ (guix import opam) dict) (car test)))))
+               (let ((result (peg:tree (match-pattern dict (car test)))))
                  (if (equal? result (cdr test))
                    #t
                    (pk 'fail (list (car test) result (cdr test)) #f)))))
@@ -176,7 +173,7 @@ url {
 (test-assert "parse-conditions"
   (fold (lambda (test acc)
           (and acc
-               (let ((result (peg:tree (match-pattern (@@ (guix import opam) condition) (car test)))))
+               (let ((result (peg:tree (match-pattern condition (car test)))))
                  (if (equal? result (cdr test))
                    #t
                    (pk 'fail (list (car test) result (cdr test)) #f)))))