AT_INIT
AT_COLOR_TESTS

# NOTE: There is currently no way to influence the return
# code of SciTECO, except to provoke an error.
# Since errors cannot be yielded explicitly, we use the
# idiom "(0/0)" to enforce a "Division by zero" error
# whenever we want to fail.

AT_BANNER([Features])

AT_SETUP([Missing left operand])
AT_CHECK([$SCITECO -e '+23='], 1, ignore, ignore)
AT_CLEANUP

AT_SETUP([Closing loops at the correct macro level])
AT_CHECK([$SCITECO -e '@^Ua{>} <Ma'], 1, ignore, ignore)
AT_CLEANUP

AT_SETUP([String arguments])
AT_CHECK([$SCITECO -e $'Ifoo^Q\e(0/0)\e'], 0, ignore, ignore)
AT_CHECK([$SCITECO -e '@I"foo^Q"(0/0)"'], 0, ignore, ignore)
AT_CHECK([$SCITECO -e '@I{foo{bar}foo^Q{(0/0)}'], 0, ignore, ignore)
AT_CHECK([$SCITECO -e '@Ia^EQa(0/0)a'], 0, ignore, ignore)
# TODO: String building characters
AT_CLEANUP

AT_SETUP([Q-Register definitions])
AT_CHECK([$SCITECO -e '0Ua'], 0, ignore, ignore)
AT_CHECK([$SCITECO -e '0U.a'], 0, ignore, ignore)
AT_CHECK([$SCITECO -e '0U#ab'], 0, ignore, ignore)
AT_CHECK([$SCITECO -e '0U.#ab'], 0, ignore, ignore)
AT_CHECK([$SCITECO -e '0U[[AB]]'], 0, ignore, ignore)
AT_CHECK([$SCITECO -e '0U.[[AB]]'], 0, ignore, ignore)
# TODO: String building in Q-Register definitions
# TODO: Escaping of braces.
# Unfortunately, braces are significant for M4. Perhaps use $'...'.
AT_CLEANUP

AT_SETUP([8-bit cleanlyness])
AT_CHECK([$SCITECO -e "0:@EUa/f^@^@/ :Qa-4\"N(0/0)' GaZ-4\"N(0/0)'"], 0, ignore, ignore)
AT_CLEANUP

AT_SETUP([Automatic EOL normalization])
AT_CHECK([$SCITECO -e "@EB'${srcdir}/autoeol-input.txt' EL-2\"N(0/0)' 2LR 13@I'' 0EL @EW'autoeol-sciteco.txt'"],
         0, ignore, ignore)
AT_CHECK([cmp autoeol-sciteco.txt ${srcdir}/autoeol-output.txt], 0, ignore, ignore)
AT_CLEANUP

AT_SETUP([Memory limiting])
# NOTE: We cannot escape [, so we have to balance it.
AT_CHECK([$SCITECO -e "50*1000*1000,2EJ <[[a> !]]!"], 1, ignore, ignore)
AT_CLEANUP

AT_SETUP([Execute external command])
AT_CHECK([$SCITECO -e "@EC'echo -n 0123456789' Z-10\"N(0/0)'"], 0, ignore, ignore)
AT_CHECK([$SCITECO -e "0,128ED @EC'echo -n 0123456789' Z-10\"N(0/0)'"], 0, ignore, ignore)
AT_CLEANUP

AT_BANNER([Regression Tests])

AT_SETUP([Glob patterns with character classes])
# Also checks closing brackets as part of the character set.
# NOTE: The worse-than-average escaping of the square brackets with
# ^EU< and ^EU> is necessary here since it is the current M4
# quotation character and must be balanced:
AT_CHECK([$SCITECO -e "91U< 93U> :@EN/*.^EU<^EU>ch^EU>/foo.h/\"F(0/0)'"], 0, ignore, ignore)
AT_CLEANUP

AT_SETUP([Glob patterns with unclosed trailing brackets])
AT_CHECK([$SCITECO -e "91U< :@EN/*.^EU<h/foo.^EU<h/\"F(0/0)'"], 0, ignore, ignore)
AT_CLEANUP

AT_SETUP([Searching with large counts])
# Even though the search will be unsuccessful, it will not be considered
# a proper error, so the process return code is still 0.
AT_CHECK([$SCITECO -e "2147483647@S/foo/"], 0, ignore, ignore)
# Will always break the memory limit which is considered an error.
AT_CHECK([$SCITECO -e "-2147483648@S/foo/"], 1, ignore, ignore)
AT_CLEANUP

AT_SETUP([Memory limiting during spawning])
# This might result in an OOM if memory limiting is not working
AT_CHECK([$SCITECO -e "50*1000*1000,2EJ 0,128ED @EC'cat /dev/zero'"], 1, ignore, ignore)
AT_CLEANUP

AT_BANNER([Known Bugs])

AT_SETUP([Pattern matching overflow])
# Should no longer dump core.
# It could fail because the memory limit is exceeed,
# but not in this case since the match string isn't too large.
AT_CHECK([$SCITECO -e '100000<@I"X">J @S"^EM^X"'], 0, ignore, ignore)
AT_XFAIL_IF(true)
AT_CLEANUP

AT_SETUP([Recursion overflow])
# Should no longer dump core.
# It could fail because the memory limit is exceeed,
# but not in this case since we limit the recursion.
AT_CHECK([$SCITECO -e "@^Um{U.a Q.a-100000\"<%.aMm'} 0Mm"], 0, ignore, ignore)
# On Mac OS we cannot provoke a stack overflow.
AT_XFAIL_IF([case $host in *-*-darwin*) false;; esac])
AT_CLEANUP