import: Add importer for rust crates.

* guix/import/crate.scm: New file.
* guix/scripts/import/crate.scm: New file.
* guix/scripts/import.scm (importers): Add crate importer.
* tests/crate.scm: New file.
* doc/guix.texi: Add crate importer to table.
* Makefile.am (MODULES, SCM_TESTS): Add files.

1 files changed, 102 insertions, 0 deletions

diff --git a/tests/crate.scm b/tests/crate.scm
new file mode 100644
index 0000000000..18d5f72a8c
--- /dev/null
+++ b/tests/crate.scm
@@ -0,0 +1,102 @@
+;;; GNU Guix --- Functional package management for GNU
+;;; Copyright © 2014 David Thompson <davet@gnu.org>
+;;; Copyright © 2016 David Craven <david@craven.ch>
+;;;
+;;; 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-crate)
+  #:use-module (guix import crate)
+  #:use-module (guix base32)
+  #:use-module (guix build-system cargo)
+  #:use-module (guix hash)
+  #:use-module (guix tests)
+  #:use-module (ice-9 iconv)
+  #:use-module (ice-9 match)
+  #:use-module (srfi srfi-64))
+
+(define test-crate
+  "{
+  \"crate\": {
+    \"max_version\": \"1.0.0\",
+    \"name\": \"foo\",
+    \"license\": \"MIT/Apache-2.0\",
+    \"description\": \"summary\",
+    \"homepage\": \"http://example.com\",
+  }
+}")
+
+(define test-dependencies
+  "{
+  \"dependencies\": [
+     {
+       \"crate_id\": \"bar\",
+       \"kind\": \"normal\",
+     }
+  ]
+}")
+
+(define test-source-hash
+  "")
+
+(test-begin "crate")
+
+(test-equal "guix-package->crate-name"
+  "rustc-serialize"
+  (guix-package->crate-name
+   (dummy-package
+    "rust-rustc-serialize"
+    (source (dummy-origin
+     (uri (crate-uri "rustc-serialize" "1.0")))))))
+
+(test-assert "crate->guix-package"
+  ;; Replace network resources with sample data.
+  (mock ((guix http-client) http-fetch
+         (lambda (url)
+           (match url
+             ("https://crates.io/api/v1/crates/foo"
+              (open-input-string test-crate))
+             ("https://crates.io/api/v1/crates/foo/1.0.0/download"
+              (set! test-source-hash
+                (bytevector->nix-base32-string
+                 (sha256 (string->bytevector "empty file\n" "utf-8"))))
+              (open-input-string "empty file\n"))
+             ("https://crates.io/api/v1/crates/foo/1.0.0/dependencies"
+              (open-input-string test-dependencies))
+             (_ (error "Unexpected URL: " url)))))
+    (match (crate->guix-package "foo")
+      (('package
+         ('name "rust-foo")
+         ('version "1.0.0")
+         ('source ('origin
+                    ('method 'url-fetch)
+                    ('uri ('crate-uri "foo" 'version))
+                    ('file-name ('string-append 'name "-" 'version ".tar.gz"))
+                    ('sha256
+                     ('base32
+                      (? string? hash)))))
+         ('build-system 'cargo-build-system)
+         ('inputs
+          ('quasiquote
+           (("rust-bar" ('unquote 'rust-bar)))))
+         ('home-page "http://example.com")
+         ('synopsis "summary")
+         ('description "summary")
+         ('license ('list 'license:expat 'license:asl2.0)))
+       (string=? test-source-hash hash))
+      (x
+       (pk 'fail x #f)))))
+
+(test-end "crate")