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yasnippet/snippet-tests.el

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;;; snippet-tests.el --- some basic tests for snippet.el
;; Copyright (C) 2013
;; Author: ;;; some basic test snippets <joaot@BELMONTE>
;; Keywords:
;; This program 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.
;; This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;
;;; Code:
(require 'snippet)
(require 'ert)
(require 'ert-x)
(defvar snippet--test-snippets-alist nil)
(setq snippet--test-snippets-alist
`((basic ((&field 1 "foo")
" bar "
(&mirror 1)))
(contrived ((&field 1)
(&field 2)
(&field 3)))
(nested ("a "
(&field 1 (&nested (&field 2 "nested")
" "
(&field 3 "field")))
" and its mirror: "
(&mirror 1)))
(mirror-of-nested-field ("a "
(&field 1 (&nested (&field 2 "nested")
" "
(&field 3 "field")))
(&mirror 3 (concat ", nested mirroring: "
field-string))))
(printf ("printf (\""
(&field 1 "%s")
(&mirror 1 (if (string-match "%" field-string) "\"," "\")"))
(&field 2)
(&mirror 1 (if (string-match "%" field-string) "\)" ""))))
(sprintf-maybe ((&mirror 0 (unless field-empty "s"))
"printf ("
(&field 0)
(&mirror 0 (unless field-empty ","))
"\""
(&field 1 "%s")
(&mirror 1 (if (string-match "%" field-string) "\"," "\")"))
(&field 2)
(&mirror 1 (if (string-match "%" field-string) "\)" ""))))
(emacs-version ((&field 1 emacs-version)
" " (upcase (emacs-version)) " "
(&mirror 1)))
(wrap-selected-region ("foo"
selected-text
"baz"
(&field 1 selected-text)))))
(defun snippet--insert-test-snippet (name)
(funcall (make-snippet (cadr (assoc name snippet--test-snippets-alist)))))
(ert-deftest basic-expansion ()
(with-temp-buffer
(snippet--insert-test-snippet 'basic)
(should (equal (buffer-string) "foo bar foo"))
(should (equal (buffer-substring (overlay-start snippet--field-overlay)
(overlay-end snippet--field-overlay))
"foo" ))))
(ert-deftest basic-clear-field ()
(with-temp-buffer
(snippet--insert-test-snippet 'basic)
(ert-simulate-command '((lambda () (interactive) (insert "baz"))))
(should (equal (buffer-string) "baz bar baz"))))
(ert-deftest basic-delete-char-in-field ()
(with-temp-buffer
(snippet--insert-test-snippet 'basic)
(ert-simulate-command '(delete-forward-char 1))
(ert-simulate-command '((lambda () (interactive) (insert "b"))))
(should (equal (buffer-string) "boo bar boo"))))
(ert-deftest contrived ()
(with-temp-buffer
(snippet--insert-test-snippet 'contrived)
(should (equal (buffer-string) ""))
(ert-simulate-command '((lambda () (interactive) (insert "foo"))))
(ert-simulate-command '(snippet-next-field))
(ert-simulate-command '((lambda () (interactive) (insert "bar"))))
(ert-simulate-command '(snippet-next-field))
(ert-simulate-command '((lambda () (interactive) (insert "baz"))))
(should (equal (buffer-string) "foobarbaz"))))
(ert-deftest contrived-2 ()
(with-temp-buffer
(snippet--insert-test-snippet 'contrived)
(should (equal (buffer-string) ""))
(ert-simulate-command '(snippet-next-field))
(ert-simulate-command '(snippet-next-field))
(ert-simulate-command '((lambda () (interactive) (insert "baz"))))
(ert-simulate-command '(snippet-prev-field))
(ert-simulate-command '((lambda () (interactive) (insert "bar"))))
(ert-simulate-command '(snippet-prev-field))
(ert-simulate-command '((lambda () (interactive) (insert "foo"))))
(should (equal (buffer-string) "foobarbaz"))))
(ert-deftest nested-expansion ()
(with-temp-buffer
(snippet--insert-test-snippet 'nested)
(should (equal (buffer-string) "a nested field and its mirror: nested field"))
(ert-simulate-command '(snippet-next-field))
(ert-simulate-command '((lambda () (interactive) (insert "nicely"))))
(ert-simulate-command '(snippet-next-field))
(ert-simulate-command '((lambda () (interactive) (insert "nested field"))))
(should (equal (buffer-substring (overlay-start snippet--field-overlay)
(overlay-end snippet--field-overlay))
"nested field" ))
(should (equal (buffer-string) "a nicely nested field and its mirror: nicely nested field"))))
(ert-deftest nested-skip-fields ()
(with-temp-buffer
(snippet--insert-test-snippet 'nested)
(ert-simulate-command '((lambda () (interactive) (insert "foo"))))
(should (equal (buffer-string) "a foo and its mirror: foo"))
;; this should exit the snippet now, since the two remaining
;; fields should be skipped
(ert-simulate-command '(snippet-next-field))
(should (null (overlay-buffer snippet--field-overlay)))))
(ert-deftest mirror-of-nested-field ()
(with-temp-buffer
(snippet--insert-test-snippet 'mirror-of-nested-field)
(should (equal (buffer-string) "a nested field, nested mirroring: field"))
(ert-simulate-command '(snippet-next-field))
(ert-simulate-command '(snippet-next-field))
(ert-simulate-command '((lambda () (interactive) (insert "foo"))))
(should (equal (buffer-string) "a nested foo, nested mirroring: foo"))))
(ert-deftest printf-expansion ()
(with-temp-buffer
(snippet--insert-test-snippet 'printf)
(should (equal (buffer-string) "printf (\"%s\",)"))))
(ert-deftest printf-mirrors ()
(with-temp-buffer
(snippet--insert-test-snippet 'printf)
(ert-simulate-command '(delete-forward-char 1))
(should (equal (buffer-string) "printf (\"s\")"))
(ert-simulate-command '((lambda () (interactive) (insert "%"))))
(should (equal (buffer-string) "printf (\"%s\",)"))))
(ert-deftest printf-mirrors-and-navigation ()
(with-temp-buffer
(snippet--insert-test-snippet 'printf)
(ert-simulate-command '(delete-forward-char 1))
(should (equal (buffer-string) "printf (\"s\")"))
(ert-simulate-command '((lambda () (interactive) (insert "%"))))
(should (equal (buffer-string) "printf (\"%s\",)"))
(ert-simulate-command '(snippet-next-field))
(ert-simulate-command '((lambda () (interactive) (insert "somevar"))))
(should (equal (buffer-string) "printf (\"%s\",somevar)"))))
(ert-deftest printf-jump-to-second-field-right-away ()
(with-temp-buffer
(snippet--insert-test-snippet 'printf)
(ert-simulate-command '(snippet-next-field))
(ert-simulate-command '((lambda () (interactive) (insert "somevar"))))
(should (equal (buffer-string) "printf (\"%s\",somevar)"))))
(ert-deftest sprintf-variation ()
(with-temp-buffer
(snippet--insert-test-snippet 'sprintf-maybe)
(should (equal (buffer-string) "printf (\"%s\",)"))
(ert-simulate-command '((lambda () (interactive) (insert "somestring"))))
(should (equal (buffer-string) "sprintf (somestring,\"%s\",)"))))
(ert-deftest emacs-version ()
(with-temp-buffer
(snippet--insert-test-snippet 'emacs-version)
(should (equal (buffer-string)
(concat emacs-version " "
(upcase (emacs-version)) " "
emacs-version)))
(ert-simulate-command '((lambda () (interactive) (insert "somestring"))))
(should (equal (buffer-string)
(concat "somestring" " "
(upcase (emacs-version)) " "
"somestring")))))
(ert-deftest wrap-selected-region ()
;; this test needs some work. testing with `region-active-p' is hard
;; and also the "delete-selection" behaviour isn't decided yet
;;
:expected-result :failed
(with-temp-buffer
(ert-simulate-command '((lambda () (interactive) (insert "bar"))))
(set-mark (point))
(goto-char (point-max))
(snippet--insert-test-snippet 'wrap-selected-region)
(should (equal (buffer-string)
"foobarbazbar"))))
;;; input validation
;;;
(ert-deftest valid-forms ()
;; fields
;;
(should (equal (snippet--canonicalize-form '(&field 1 (foo)))
'(&field 1 (&eval (foo)))))
(should (equal (snippet--canonicalize-form '(&field 1 (&eval (foo))))
'(&field 1 (&eval (foo)))))
(should (equal (snippet--canonicalize-form '(&field 1 (&transform (foo))))
'(&field 1 (&transform (foo)))))
(should (equal (snippet--canonicalize-form '(&field 1 (&nested (foo) (bar))))
'(&field 1 (&nested (foo) (bar)))))
(should (equal (snippet--canonicalize-form '(&field 1))
'(&field 1 nil)))
;; mirrors
;;
(should (equal (snippet--canonicalize-form '(&mirror 1))
'(&mirror 1 (&transform field-string))))
(should (equal (snippet--canonicalize-form '(&mirror 1 (foo)))
'(&mirror 1 (&transform (foo)))))
(should (equal (snippet--canonicalize-form '(&mirror 1 (&transform (foo))))
'(&mirror 1 (&transform (foo)))))
;; normal forms
;;
(should (equal (snippet--canonicalize-form "bla")
'(&eval "bla")))
(should (equal (snippet--canonicalize-form '(&eval "bla"))
'(&eval "bla")))
(should (equal (snippet--canonicalize-form '(foo))
'(&eval (foo))))
(should (equal (snippet--canonicalize-form '(&eval (foo)))
'(&eval (foo)))))
(ert-deftest invalid-forms ()
;; fields
(should-error (snippet--canonicalize-form '(&field 1 (&transform (foo) (bar)))))
(should-error (snippet--canonicalize-form '(&field 1 (&eval (foo) (bar)))))
(should-error (snippet--canonicalize-form '(&mirror 1 (foo) (bar))))
(should-error (snippet--canonicalize-form '(&field 1 (foo) (bar))))
(should-error (snippet--canonicalize-form '(&eval (foo) (bar)))))
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