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Diffstat (limited to 'tests/read-print.scm')
| -rw-r--r-- | tests/read-print.scm | 380 |
1 files changed, 380 insertions, 0 deletions
diff --git a/tests/read-print.scm b/tests/read-print.scm new file mode 100644 index 0000000000..4dabcc1e64 --- /dev/null +++ b/tests/read-print.scm @@ -0,0 +1,380 @@ +;;; GNU Guix --- Functional package management for GNU +;;; Copyright © 2021-2022 Ludovic Courtès <[email protected]> +;;; +;;; 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 (tests-style) + #:use-module (guix read-print) + #:use-module (guix gexp) ;for the reader extensions + #:use-module (srfi srfi-34) + #:use-module (srfi srfi-35) + #:use-module (srfi srfi-64) + #:use-module (ice-9 match)) + +(define-syntax-rule (test-pretty-print str args ...) + "Test equality after a round-trip where STR is passed to +'read-with-comments' and the resulting sexp is then passed to +'pretty-print-with-comments'." + (test-equal str + (call-with-output-string + (lambda (port) + (let ((exp (call-with-input-string str + read-with-comments))) + (pretty-print-with-comments port exp args ...)))))) + +(define-syntax-rule (test-pretty-print/sequence str args ...) + "Likewise, but read and print entire sequences rather than individual +expressions." + (test-equal str + (call-with-output-string + (lambda (port) + (let ((lst (call-with-input-string str + read-with-comments/sequence))) + (pretty-print-with-comments/splice port lst args ...)))))) + + +(test-begin "read-print") + +(test-assert "read-with-comments: missing closing paren" + (guard (c ((error? c) #t)) + (call-with-input-string "(what is going on?" + read-with-comments))) + +(test-equal "read-with-comments: dot notation" + (cons 'a 'b) + (call-with-input-string "(a . b)" + read-with-comments)) + +(test-equal "read-with-comments: list with blank line" + `(list with ,(vertical-space 1) blank line) + (call-with-input-string "\ +(list with + + blank line)\n" + read-with-comments)) + +(test-equal "read-with-comments: list with multiple blank lines" + `(list with ,(comment ";multiple\n" #t) + ,(vertical-space 3) blank lines) + (call-with-input-string "\ +(list with ;multiple + + + + blank lines)\n" + read-with-comments)) + +(test-equal "read-with-comments: top-level blank lines" + (list (vertical-space 2) '(a b c) (vertical-space 2)) + (call-with-input-string " + +(a b c)\n\n" + (lambda (port) + (list (read-with-comments port) + (read-with-comments port) + (read-with-comments port))))) + +(test-equal "read-with-comments: top-level page break" + (list (comment ";; Begin.\n") (vertical-space 1) + (page-break) + (comment ";; End.\n")) + (call-with-input-string "\ +;; Begin. + + +;; End.\n" + (lambda (port) + (list (read-with-comments port) + (read-with-comments port) + (read-with-comments port) + (read-with-comments port))))) + +(test-pretty-print "(list 1 2 3 4)") +(test-pretty-print "((a . 1) (b . 2))") +(test-pretty-print "(a b c . boom)") +(test-pretty-print "(list 1 + 2 + 3 + 4)" + #:long-list 3 + #:indent 20) +(test-pretty-print "\ +(list abc + def)" + #:max-width 11) +(test-pretty-print "\ +(#:foo + #:bar)" + #:max-width 10) + +(test-pretty-print "\ +(#:first 1 + #:second 2 + #:third 3)") + +(test-pretty-print "\ +((x + 1) + (y + 2) + (z + 3))" + #:max-width 3) + +(test-pretty-print "\ +(let ((x 1) + (y 2) + (z 3) + (p 4)) + (+ x y))" + #:max-width 11) + +(test-pretty-print "\ +(lambda (x y) + ;; This is a procedure. + (let ((z (+ x y))) + (* z z)))") + +(test-pretty-print "\ +(case x + ((1) + 'one) + ((2) + 'two))") + +(test-pretty-print "\ +(cond + ((zero? x) + 'zero) + ((odd? x) + 'odd) + (else #f))") + +(test-pretty-print "\ +#~(string-append #$coreutils \"/bin/uname\")") + +(test-pretty-print "\ +(package + (inherit coreutils) + (version \"42\"))") + +(test-pretty-print "\ +(modify-phases %standard-phases + (add-after 'unpack 'post-unpack + (lambda _ + #t)) + (add-before 'check 'pre-check + (lambda* (#:key inputs #:allow-other-keys) + do things ...)))") + +(test-pretty-print "\ +(#:phases (modify-phases sdfsdf + (add-before 'x 'y + (lambda _ + xyz))))") + +(test-pretty-print "\ +(description \"abcdefghijkl +mnopqrstuvwxyz.\")" + #:max-width 30) + +(test-pretty-print "\ +(description + \"abcdefghijkl +mnopqrstuvwxyz.\")" + #:max-width 12) + +(test-pretty-print "\ +(description + \"abcdefghijklmnopqrstuvwxyz\")" + #:max-width 33) + +(test-pretty-print "\ +(modify-phases %standard-phases + (replace 'build + ;; Nicely indented in 'modify-phases' context. + (lambda _ + #t)))") + +(test-pretty-print "\ +(modify-inputs inputs + ;; Regular indentation for 'replace' here. + (replace \"gmp\" gmp))") + +(test-pretty-print "\ +(package + ;; Here 'sha256', 'base32', and 'arguments' must be + ;; immediately followed by a newline. + (source (origin + (method url-fetch) + (sha256 + (base32 + \"not a real base32 string\")))) + (arguments + '(#:phases %standard-phases + #:tests? #f)))") + +;; '#:key value' is kept on the same line. +(test-pretty-print "\ +(package + (name \"keyword-value-same-line\") + (arguments + (list #:phases #~(modify-phases %standard-phases + (add-before 'x 'y + (lambda* (#:key inputs #:allow-other-keys) + (foo bar baz)))) + #:make-flags #~'(\"ANSWER=42\") + #:tests? #f)))") + +(test-pretty-print "\ +(let ((x 1) + (y 2) + (z (let* ((a 3) + (b 4)) + (+ a b)))) + (list x y z))") + +(test-pretty-print "\ +(substitute-keyword-arguments (package-arguments x) + ((#:phases phases) + `(modify-phases ,phases + (add-before 'build 'do-things + (lambda _ + #t)))) + ((#:configure-flags flags) + `(cons \"--without-any-problem\" + ,flags)))") + +(test-pretty-print "\ +(vertical-space one: + + two: + + + three: + + + + end)") + +(test-pretty-print "\ +(vertical-space one + + ;; Comment after blank line. + two)") + +(test-pretty-print "\ +(begin + break + + ;; page break above + end)") + +(test-pretty-print/sequence "\ +;;; This is a top-level comment. + + +;; Above is a page break. +(this is an sexp + ;; with a comment + !!) + +;; The end.\n") + +(test-pretty-print/sequence " +;;; Hello! +;;; Notice that there are three semicolons here. + +(define-module (foo bar) + #:use-module (guix) + #:use-module (gnu)) + + +;; And now, the OS. +(operating-system + (host-name \"komputilo\") + (locale \"eo_EO.UTF-8\") + + (services + (cons (service mcron-service-type) %base-services)))\n" + #:format-comment canonicalize-comment) + +(test-equal "pretty-print-with-comments, canonicalize-comment" + "\ +(list abc + ;; Not a margin comment. + ;; Ditto. + ;; + ;; There's a blank line above. + def ;margin comment + ghi)" + (let ((sexp (call-with-input-string + "\ +(list abc + ;Not a margin comment. + ;;; Ditto. + ;;;;; + ; There's a blank line above. + def ;; margin comment + ghi)" + read-with-comments))) + (call-with-output-string + (lambda (port) + (pretty-print-with-comments port sexp + #:format-comment + canonicalize-comment))))) + +(test-equal "pretty-print-with-comments, canonicalize-vertical-space" + "\ +(list abc + + def + + ;; last one + ghi)" + (let ((sexp (call-with-input-string + "\ +(list abc + + + + def + + +;; last one + ghi)" + read-with-comments))) + (call-with-output-string + (lambda (port) + (pretty-print-with-comments port sexp + #:format-vertical-space + canonicalize-vertical-space))))) + +(test-equal "pretty-print-with-comments, multi-line comment" + "\ +(list abc + ;; This comment spans + ;; two lines. + def)" + (call-with-output-string + (lambda (port) + (pretty-print-with-comments port + `(list abc ,(comment "\ +;; This comment spans\n +;; two lines.\n") + def))))) + +(test-end) |