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Also test parse error messages, including with YYERROR_VERBOSE.

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* tests/calc.m4 (calc.y): Add support for `exp = exp' (non
associative).
Use it to check the computations.
Use it to check `nonassoc' is honored.
(AT_DATA_CALC_Y): Equip `calc.y' with YYERROR_VERBOSE when passed
`--yyerror-verbose'.
(_AT_CHECK_CALC): Adjust to this option.
(_AT_CHECK_CALC_ERROR): New macro to check parse error messages.
This commit is contained in:
Akim Demaille
2000-10-02 09:05:32 +00:00
parent 5a35a6cb71
commit d6c2cba06d
2 changed files with 106 additions and 40 deletions
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14
ChangeLog
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@@ -1,3 +1,17 @@
2000-10-02 Akim Demaille <akim@epita.fr>
Also test parse error messages, including with YYERROR_VERBOSE.
* tests/calc.m4 (calc.y): Add support for `exp = exp' (non
associative).
Use it to check the computations.
Use it to check `nonassoc' is honored.
(AT_DATA_CALC_Y): Equip `calc.y' with YYERROR_VERBOSE when passed
`--yyerror-verbose'.
(_AT_CHECK_CALC): Adjust to this option.
(_AT_CHECK_CALC_ERROR): New macro to check parse error messages.
2000-10-02 Akim Demaille <akim@epita.fr>
Test also `--verbose', `--defines' and `--name-prefix'. Testing

132
tests/calc.m4
View File

@@ -17,21 +17,25 @@ EOF
# ------------------------- #
# _AT_DATA_CALC_Y($1, $2, $3)
# ---------------------------
# _AT_DATA_CALC_Y($1, $2, $3, [CPP-DIRECTIVES])
# ---------------------------------------------
# Produce `calc.y'. Don't call this macro directly, because it contains
# some occurrences of `$1' etc. which will be interpreted by m4. So
# you should call it with $1, $2, and $3 as arguments, which is what
# AT_DATA_CALC_Y does.
AT_DEFINE([_AT_DATA_CALC_Y],
[AT_DATA([calc.y],
[ifelse([$1$2$3],
$[1]$[2]$[3], [],
[errprint([$0: Invalid arguments: $@
])m4exit(1)])dnl
AT_DATA([calc.y],
[[/* Infix notation calculator--calc */
%{
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#define YYSTYPE int
]$4[
static int power (int base, int exponent);
static int read_signed_integer (FILE *stream);
@@ -42,6 +46,8 @@ extern void perror (const char *s);
/* BISON Declarations */
%token NUM
%nonassoc '=' /* comparison */
%left '-' '+'
%left '*' '/'
%left NEG /* negation--unary minus */
@@ -49,22 +55,31 @@ extern void perror (const char *s);
/* Grammar follows */
%%
input: /* empty string */
| input line
input:
/* empty string */
| input line
;
line: '\n'
| exp '\n' { printf ("%d", $1); }
line:
'\n'
| exp '\n'
;
exp: NUM { $$ = $1; }
| exp '+' exp { $$ = $1 + $3; }
| exp '-' exp { $$ = $1 - $3; }
| exp '*' exp { $$ = $1 * $3; }
| exp '/' exp { $$ = $1 / $3; }
| '-' exp %prec NEG { $$ = -$2; }
| exp '^' exp { $$ = power ($1, $3); }
| '(' exp ')' { $$ = $2; }
exp:
NUM { $$ = $1; }
| exp '=' exp
{
if ($1 != $3)
printf ("calc: error: %d != %d\n", $1, $3);
$$ = $1 == $3;
}
| exp '+' exp { $$ = $1 + $3; }
| exp '-' exp { $$ = $1 - $3; }
| exp '*' exp { $$ = $1 * $3; }
| exp '/' exp { $$ = $1 / $3; }
| '-' exp %prec NEG { $$ = -$2; }
| exp '^' exp { $$ = power ($1, $3); }
| '(' exp ')' { $$ = $2; }
;
%%
/* The input. */
@@ -163,18 +178,41 @@ main (int argn, const char **argv)
])# _AT_DATA_CALC_Y
# AT_DATA_CALC_Y
# --------------
# AT_DATA_CALC_Y([BISON-OPTIONS])
# -------------------------------
# Produce `calc.y'.
AT_DEFINE([AT_DATA_CALC_Y],
[_AT_DATA_CALC_Y($[1], $[2], $[3])])
[_AT_DATA_CALC_Y($[1], $[2], $[3],
[ifelse(regexp([$1], [--yyerror-verbose]),
[-1], [],
[[#define YYERROR_VERBOSE]])])])
# _AT_CHECK_CALC(INPUT, OUTPUT, [STDERR])
# ---------------------------------------
# Run `calc' on INPUT, and expect OUTPUT and STDERR.
# _AT_CHECK_CALC(BISON-OPTIONS, INPUT)
# ------------------------------------
# Run `calc' on INPUT and expect no STDOUT nor STDERR.
# If `--debug' is passed to bison, discard all the debugging traces
# preserving only the `parse errors'. Note that since there should be
# none, the `grep' will fail with exit status 1.
AT_DEFINE([_AT_CHECK_CALC],
[AT_CHECK([echo "$1" | calc], 0, [$2], [$3])])
[ifelse(regexp([$1], [--debug]),
[-1],
[AT_CHECK([echo "$2" | calc],
[0], [], [])],
[AT_CHECK([echo "$2" | calc 2>&1 >/dev/null | grep 'parse error' >&2],
[1], [], [])])])
# _AT_CHECK_CALC_ERROR(BISON-OPTIONS, INPUT, [IF-YYERROR-VERBOSE])
# ----------------------------------------------------------------
# Run `calc' on INPUT, and expect STDERR.
AT_DEFINE([_AT_CHECK_CALC_ERROR],
[AT_CHECK([echo "$2" | calc 2>&1 >/dev/null | grep 'parse error' >&2], 0,
[],
[parse error[]ifelse(regexp([$1], [--yyerror-verbose]),
[-1], [], [$3])
])])
# AT_CHECK_CALC([BISON-OPTIONS], [PARSER-EXPECTED-STDERR])
@@ -185,36 +223,49 @@ AT_DEFINE([AT_CHECK_CALC],
[# We use integers to avoid dependencies upon the precision of doubles.
AT_SETUP([Calculator $1])
AT_DATA_CALC_Y
AT_DATA_CALC_Y([$1])
# Specify the output files to avoid problems on different file systems.
AT_CHECK([bison calc.y -o calc.c $1], 0, [], [])
AT_CHECK([bison calc.y -o calc.c patsubst([$1], [--yyerror-verbose])],
[0], [], [])
AT_CHECK([$CC $CFLAGS calc.c -o calc], 0, [], [])
# Test the priorities.
_AT_CHECK_CALC([1 + 2 * 3], [7], [$2])
_AT_CHECK_CALC([1 + 2 * -3], [-5], [$2])
_AT_CHECK_CALC([$1],
[1 + 2 * 3 = 7
1 + 2 * -3 = -5
_AT_CHECK_CALC([-1^2], [-1], [$2])
_AT_CHECK_CALC([(-1)^2], [1], [$2])
-1^2 = -1
(-1)^2 = 1
_AT_CHECK_CALC([---1], [-1], [$2])
---1 = -1
_AT_CHECK_CALC([1 - 2 - 3], [-4], [$2])
_AT_CHECK_CALC([1 - (2 - 3)], [2], [$2])
1 - 2 - 3 = -4
1 - (2 - 3) = 2
_AT_CHECK_CALC([2^2^3], [256], [$2])
_AT_CHECK_CALC([(2^2)^3], [64], [$2])
2^2^3 = 256
(2^2)^3 = 64], [$2])
# Some parse errors.
_AT_CHECK_CALC_ERROR([$1], [+1],
[, unexpected `'+''])
_AT_CHECK_CALC_ERROR([$1], [1//2],
[, unexpected `'/'', expecting `NUM' or `'-'' or `'(''])
_AT_CHECK_CALC_ERROR([$1], [error],
[, unexpected `$undefined.'])
_AT_CHECK_CALC_ERROR([$1], [1 = 2 = 3],
[, unexpected `'=''])
AT_CLEANUP(calc calc.c calc.h calc.output)
])# AT_CHECK_CALC
# -------------- #
# Actual tests. #
# -------------- #
# ------------------ #
# Test the parsers. #
# ------------------ #
AT_CHECK_CALC()
# This one is very suspicious. The test fails, but it might be normal.
AT_CHECK_CALC([--raw])
@@ -223,8 +274,9 @@ AT_CHECK_CALC([--defines])
AT_CHECK_CALC([--name-prefix=calc])
AT_CHECK_CALC([--verbose])
AT_CHECK_CALC([--yacc])
AT_CHECK_CALC([--defines --name-prefix=calc --verbose --yacc])
AT_CHECK_CALC([--yyerror-verbose])
AT_CHECK_CALC([--defines --name-prefix=calc --verbose --yacc --yyerror-verbose])
# When --debug, a lot of data is sent to STDERR, we can't test it.
AT_CHECK_CALC([--debug], ignore)
AT_CHECK_CALC([--debug --defines --name-prefix=calc --verbose --yacc], ignore)
AT_CHECK_CALC([--debug])
AT_CHECK_CALC([--debug --defines --name-prefix=calc --verbose --yacc --yyerror-verbose])