tests/tap/basic.h

   1 /*
   2  * Basic utility routines for the TAP protocol.
   3  *
   4  * Copyright 2009, 2010 Russ Allbery <rra@stanford.edu>
   5  * Copyright 2006, 2007, 2008
   6  *     Board of Trustees, Leland Stanford Jr. University
   7  * Copyright (c) 2004, 2005, 2006
   8  *     by Internet Systems Consortium, Inc. ("ISC")
   9  * Copyright (c) 1991, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
  10  *     2002, 2003 by The Internet Software Consortium and Rich Salz
  11  *
  12  * See LICENSE for licensing terms.
  13  */
  14
  15 #ifndef TAP_BASIC_H
  16 #define TAP_BASIC_H 1
  17
  18 #include <stdarg.h>             /* va_list */
  19 #include <sys/types.h>          /* pid_t */
  20
  21 /*
  22  * __attribute__ is available in gcc 2.5 and later, but only with gcc 2.7
  23  * could you use the __format__ form of the attributes, which is what we use
  24  * (to avoid confusion with other macros).
  25  */
  26 #ifndef __attribute__
  27 # if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
  28 #  define __attribute__(spec)   /* empty */
  29 # endif
  30 #endif
  31
  32 /*
  33  * BEGIN_DECLS is used at the beginning of declarations so that C++
  34  * compilers don't mangle their names.  END_DECLS is used at the end.
  35  */
  36 #undef BEGIN_DECLS
  37 #undef END_DECLS
  38 #ifdef __cplusplus
  39 # define BEGIN_DECLS    extern "C" {
  40 # define END_DECLS      }
  41 #else
  42 # define BEGIN_DECLS    /* empty */
  43 # define END_DECLS      /* empty */
  44 #endif
  45
  46 /*
  47  * Used for iterating through arrays.  ARRAY_SIZE returns the number of
  48  * elements in the array (useful for a < upper bound in a for loop) and
  49  * ARRAY_END returns a pointer to the element past the end (ISO C99 makes it
  50  * legal to refer to such a pointer as long as it's never dereferenced).
  51  */
  52 #define ARRAY_SIZE(array)       (sizeof(array) / sizeof((array)[0]))
  53 #define ARRAY_END(array)        (&(array)[ARRAY_SIZE(array)])
  54
  55 BEGIN_DECLS
  56
  57 /*
  58  * The test count.  Always contains the number that will be used for the next
  59  * test status.
  60  */
  61 extern unsigned long testnum;
  62
  63 /* Print out the number of tests and set standard output to line buffered. */
  64 void plan(unsigned long count);
  65
  66 /*
  67  * Prepare for lazy planning, in which the plan will be  printed automatically
  68  * at the end of the test program.
  69  */
  70 void plan_lazy(void);
  71
  72 /* Skip the entire test suite.  Call instead of plan. */
  73 void skip_all(const char *format, ...)
  74     __attribute__((__noreturn__, __format__(printf, 1, 2)));
  75
  76 /*
  77  * Basic reporting functions.  The okv() function is the same as ok() but
  78  * takes the test description as a va_list to make it easier to reuse the
  79  * reporting infrastructure when writing new tests.
  80  */
  81 void ok(int success, const char *format, ...)
  82     __attribute__((__format__(printf, 2, 3)));
  83 void okv(int success, const char *format, va_list args);
  84 void skip(const char *reason, ...)
  85     __attribute__((__format__(printf, 1, 2)));
  86
  87 /* Report the same status on, or skip, the next count tests. */
  88 void ok_block(unsigned long count, int success, const char *format, ...)
  89     __attribute__((__format__(printf, 3, 4)));
  90 void skip_block(unsigned long count, const char *reason, ...)
  91     __attribute__((__format__(printf, 2, 3)));
  92
  93 /* Check an expected value against a seen value. */
  94 void is_int(long wanted, long seen, const char *format, ...)
  95     __attribute__((__format__(printf, 3, 4)));
  96 void is_double(double wanted, double seen, const char *format, ...)
  97     __attribute__((__format__(printf, 3, 4)));
  98 void is_string(const char *wanted, const char *seen, const char *format, ...)
  99     __attribute__((__format__(printf, 3, 4)));
 100 void is_hex(unsigned long wanted, unsigned long seen, const char *format, ...)
 101     __attribute__((__format__(printf, 3, 4)));
 102
 103 /* Bail out with an error.  sysbail appends strerror(errno). */
 104 void bail(const char *format, ...)
 105     __attribute__((__noreturn__, __nonnull__, __format__(printf, 1, 2)));
 106 void sysbail(const char *format, ...)
 107     __attribute__((__noreturn__, __nonnull__, __format__(printf, 1, 2)));
 108
 109 /* Report a diagnostic to stderr prefixed with #. */
 110 void diag(const char *format, ...)
 111     __attribute__((__nonnull__, __format__(printf, 1, 2)));
 112 void sysdiag(const char *format, ...)
 113     __attribute__((__nonnull__, __format__(printf, 1, 2)));
 114
 115 END_DECLS
 116
 117 #endif /* TAP_BASIC_H */