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;;; Tests for gnuplot-mode.
;;; Currently these attempt to cover the correct identification of
;;; string and comment syntax.
(require 'gnuplot)
(require 'ert)
(eval-when-compile (require 'cl))
;; Hide an annoying interactive message during batch testing
(when (require 'nadvice nil t)
(advice-add
'message
:around
(lambda (orig-message format-string &rest args)
(unless (string= format-string
"gnuplot-mode %s (gnuplot %s) -- report bugs with %S")
(apply orig-message format-string args)))))
(eval-and-compile
(defvar gnuplot-string-test-contexts
'("%s"
"print %s"
"print %s, 2+3"
"print %s, 'another string'"
"print %s, \"another string\""
"print 'another string', %s"
"\"double-quoted string\" %s"
"\"double-quoted string\"%s"
"%s \"double-quoted string\""
"%s\"double-quoted string\""
"'single-quoted string' %s"
"%s 'single-quoted string'"
"'single-quoted string' %s 'single-quoted string'")))
(defun gnuplot-test-string-in-context (string context)
"Test syntax-propertizing of STRING in CONTEXT in gnuplot-mode.
STRING contains text representing a Gnuplot string literal.
CONTEXT is a context is a context to place the literal within,
represented by a format-string with a single %s placeholder.
Returns non-nil if STRING is correctly recognised as a single
string by `scan-sexps'."
(destructuring-bind (prologue epilogue)
(split-string context "%s")
(with-temp-buffer
(gnuplot-mode)
(let (start end)
(save-excursion
(insert prologue)
(setq start (point))
(insert string)
(setq end (point))
(insert epilogue))
(when (fboundp 'syntax-propertize)
(syntax-propertize (point-max)))
(string= (buffer-substring start (scan-sexps start 1))
string)))))
(defmacro gnuplot-test-string (name string)
"Define an `ert' test to check syntax recognition of STRING in gnuplot-mode.
The test checks that STRING is correctly recognised as a single
string-literal in multiple different contexts, as determined by
`gnuplot-string-test-contexts'."
(declare (indent 1))
`(ert-deftest ,name ()
,string
,@(loop for context in gnuplot-string-test-contexts
collect
`(should (gnuplot-test-string-in-context ,string ,context)))))
;;;; Tests for double-quoted strings
(gnuplot-test-string gnuplot-double-quoted-string
"\"double-quoted string\"")
(gnuplot-test-string gnuplot-double-quoted-with-single-quotes
"\"double-quoted 'with single quotes' embedded\"")
(gnuplot-test-string gnuplot-double-quoted-with-single-quotes-2
"\"'single quotes inside double quotes'\"")
(gnuplot-test-string gnuplot-double-quoted-escapes
"\"double-quoted \\\\ string \\\" with embedded \\\" escapes\"")
(gnuplot-test-string gnuplot-double-quoted-escapes-2
"\"escaped quote before closing quote \\\"\"")
(gnuplot-test-string gnuplot-double-quoted-escapes-3
"\"escaped backslash before closing quote \\\\\"")
(gnuplot-test-string gnuplot-double-quoted-escapes-4
"\"\\\" escaped quote after opening quote\"")
(gnuplot-test-string gnuplot-double-quoted-escapes-5
"\"\\\\ escaped backslash after opening quote\"")
(gnuplot-test-string gnuplot-double-quoted-escapes-6
"\"\\\\\\\" escaped backslashes + escaped quotes (1) \\\\\\\"\"")
(gnuplot-test-string gnuplot-double-quoted-empty
"\"\"")
(gnuplot-test-string gnuplot-double-quoted-string-containing-escaped-quotes
"\"\\\"\\\"\"")
(gnuplot-test-string gnuplot-newline-terminated-double-quoted-string
"\"newline-terminated
")
(gnuplot-test-string gnuplot-double-quoted-with-embedded-newlines
"\"string \\
with embedded \\
newlines\"")
(gnuplot-test-string gnuplot-newline-terminated-double-quoted-string-with-newline
;; with newlines
"\"newline-terminated string \\
with newlines
")
;;;; Tests for single-quoted strings
(gnuplot-test-string gnuplot-single-quoted-strings
"'single-quoted string'")
(gnuplot-test-string gnuplot-single-quoted-empty
"''")
(gnuplot-test-string gnuplot-single-quoted-with-double-quotes
"'a single-quoted string \"containing a double-quoted string\"'")
(gnuplot-test-string gnuplot-single-quoted-quotes
"'embedded '' quote '' characters'")
(gnuplot-test-string gnuplot-single-quoted-quotes-2
"'embedded '' quote '' characters'''")
(gnuplot-test-string gnuplot-single-quoted-quotes-3
"' '''")
(gnuplot-test-string gnuplot-single-quoted-backslashes
"'embedded \\ backslashes \\'")
(gnuplot-test-string gnuplot-single-quoted-backslashes-2
"'multiple \\ embedded \\\\ backslashes \\\\\\'")
(gnuplot-test-string gnuplot-single-quoted-trailing-backslash
"'trailing backslash\\'")
(gnuplot-test-string gnuplot-single-quoted-newline-terminated
"'newline terminated\n")
(gnuplot-test-string gnuplot-single-quoted-newline-terminated-quotes
"'embedded '' escapes \\ ending at newline ''\n")
(gnuplot-test-string gnuplot-single-quoted-embedded-newlines
"'string \\\n with embedded \\\nnewlines'")
(gnuplot-test-string gnuplot-single-quoted-embedded-newlines-backslashes
"'string \\\\\n with \\\\\\\n multiple \\\\\\\\\n backslashes'")
(gnuplot-test-string gnuplot-single-quoted-newline-terminated-embedded-newline
"'newline-terminated string \\\n with newlines\n")
;;;; Comment syntax
(eval-and-compile
(defvar gnuplot-comment-test-contexts
'("%s"
"\n%s"
"\n\n%s\n\n"
"print 'single-quoted string' %s"
"print \"double-quoted string\" %s"
"print 'single-quoted string # with hash mark' %s"
"print \"double-quoted string # with hash mark\" %s"
"plot sin(x), cos(x) %s"
"plot sin(x)
%s
plot cos(x)"
"# one-line comment
%s"
"# multi-line \\
comment
%s")
"List of contexts in which to test syntax recognition of comments."))
(defun gnuplot-test-comment-in-context (comment context)
"Non-nil if COMMENT is correctly recognised within CONTEXT in gnuplot-mode."
(destructuring-bind (prologue epilogue)
(split-string context "%s")
(with-temp-buffer
(gnuplot-mode)
(let (start end)
(save-excursion
(insert prologue)
(setq start (point))
(insert comment)
(setq end (point))
(insert epilogue))
(when (fboundp 'syntax-propertize)
(syntax-propertize (point-max)))
(goto-char (1+ start))
(flet ((in-comment-p (position)
(nth 4 (syntax-ppss position))))
(and
(not (in-comment-p start))
(loop for position from (1+ start) upto end
always (in-comment-p position))
(or (= end (point-max))
(not (in-comment-p (1+ end))))))))))
(defmacro gnuplot-test-comment (name comment)
"Define an `ert' test to check syntax recognition of COMMENT in gnuplot-mode.
The test checks that STRING is correctly recognised as a single
string-literal in multiple different contexts, as determined by
`gnuplot-string-test-contexts'."
(declare (indent 1))
`(ert-deftest ,name ()
,comment
,@(loop for context in gnuplot-comment-test-contexts
collect
`(should (gnuplot-test-comment-in-context ,comment ,context)))))
(gnuplot-test-comment gnuplot-comment-simple
"# a simple one-line comment")
(gnuplot-test-comment gnuplot-comment-multiline
"# a comment\
continued \
over multiple lines")
(gnuplot-test-comment gnuplot-comment-with-hashes
"# a comment # with more # hash # characters #")
(gnuplot-test-comment gnuplot-comment-multiline-with-hashes
"# a comment \
# continued # over \
mutliple # lines #")
(gnuplot-test-comment gnuplot-comment-with-single-quotes
"# a comment 'containing a single-quoted string'")
(gnuplot-test-comment gnuplot-comment-with-single-quotes
"# a comment \"containing a double-quoted string\"")
(gnuplot-test-comment gnuplot-comment-multiline-with-quotes
"# a continued \
'comment' \
\"containing strings\"")
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