// -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*- // Copyright (c) 2001-2007 International Computer Science Institute // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software") // to deal in the Software without restriction, subject to the conditions // listed in the XORP LICENSE file. These conditions include: you must // preserve this copyright notice, and you cannot mention the copyright // holders in advertising related to the Software without their permission. // The Software is provided WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED. This // notice is a summary of the XORP LICENSE file; the license in that file is // legally binding. #ident "$XORP: xorp/libxorp/test_timeval.cc,v 1.10 2007/02/16 22:46:26 pavlin Exp $" #include "libxorp_module.h" #include "libxorp/xorp.h" #include "libxorp/xlog.h" #include "libxorp/exceptions.hh" #ifdef HAVE_GETOPT_H #include #endif #include "timeval.hh" // // XXX: MODIFY FOR YOUR TEST PROGRAM // static const char *program_name = "test_timeval"; static const char *program_description = "Test TimeVal class"; static const char *program_version_id = "0.1"; static const char *program_date = "April 2, 2003"; static const char *program_copyright = "See file LICENSE.XORP"; static const char *program_return_value = "0 on success, 1 if test error, 2 if internal error"; static bool s_verbose = false; bool verbose() { return s_verbose; } void set_verbose(bool v) { s_verbose = v; } static int s_failures = 0; bool failures() { return s_failures; } void incr_failures() { s_failures++; } // // printf(3)-like facility to conditionally print a message if verbosity // is enabled. // #define verbose_log(x...) _verbose_log(__FILE__,__LINE__, x) #define _verbose_log(file, line, x...) \ do { \ if (verbose()) { \ printf("From %s:%d: ", file, line); \ printf(x); \ } \ } while(0) // // Test and print a message whether two strings are lexicographically same. // The strings can be either C or C++ style. // #define verbose_match(s1, s2) \ _verbose_match(__FILE__, __LINE__, s1, s2) bool _verbose_match(const char* file, int line, const string& s1, const string& s2) { bool match = s1 == s2; _verbose_log(file, line, "Comparing %s == %s : %s\n", s1.c_str(), s2.c_str(), match ? "OK" : "FAIL"); if (match == false) incr_failures(); return match; } // // Test and print a message whether a condition is true. // // The first argument is the condition to test. // The second argument is a string with a brief description of the tested // condition. // #define verbose_assert(cond, desc) \ _verbose_assert(__FILE__, __LINE__, cond, desc) bool _verbose_assert(const char* file, int line, bool cond, const string& desc) { _verbose_log(file, line, "Testing %s : %s\n", desc.c_str(), cond ? "OK" : "FAIL"); if (cond == false) incr_failures(); return cond; } /** * Print program info to output stream. * * @param stream the output stream the print the program info to. */ static void print_program_info(FILE *stream) { fprintf(stream, "Name: %s\n", program_name); fprintf(stream, "Description: %s\n", program_description); fprintf(stream, "Version: %s\n", program_version_id); fprintf(stream, "Date: %s\n", program_date); fprintf(stream, "Copyright: %s\n", program_copyright); fprintf(stream, "Return: %s\n", program_return_value); } /** * Print program usage information to the stderr. * * @param progname the name of the program. */ static void usage(const char* progname) { print_program_info(stderr); fprintf(stderr, "usage: %s [-v] [-h]\n", progname); fprintf(stderr, " -h : usage (this message)\n"); fprintf(stderr, " -v : verbose output\n"); } static void test_timeval_constants() { // // Test TimeVal::MAXIMUM() // verbose_assert(TimeVal::ZERO() < TimeVal::MAXIMUM(), "compare TimeVal::ZERO() < TimeVal::MAXIMUM()"); // // Test TimeVal::MINIMUM() // verbose_assert(TimeVal::MINIMUM() < TimeVal::ZERO(), "compare TimeVal::MINIMUM() < TimeVal::ZERO()"); } static void test_timeval_operators() { TimeVal t(100, 100); TimeVal mt = -t; TimeVal half_t(50, 50); // // Addition Operator // verbose_assert(t + mt == TimeVal::ZERO(), "operator+"); // // Substraction Operator // verbose_assert(t - half_t == half_t, "operator-"); // // Multiplication Operator // verbose_assert(half_t * 2 == t, "operator*"); verbose_assert(half_t * 2.0 == t, "operator* (double float)"); // // Division Operator // verbose_assert(t / 2 == half_t, "operator/"); verbose_assert(t / 2.0 == half_t, "operator/ (double float)"); } static void test_timeval_random_uniform() { static const int TEST_INTERVAL = 30; static const double LOWER_BOUND = 0.75F; TimeVal interval(TEST_INTERVAL, 0); TimeVal tmin((TEST_INTERVAL * LOWER_BOUND) - 1); // Double expression TimeVal tmax(TEST_INTERVAL + 1, 0); // // Calculate jitter which is uniformly distributed as a fraction // of TEST_INTERVAL between LOWER_BOUND (0.75) and 1.0. // TimeVal lower_bound_timeval = TimeVal(interval.get_double() * LOWER_BOUND); TimeVal result = random_uniform(lower_bound_timeval, interval); // // Thest that the output is not outside of expected range // string msg = c_format("time random uniform distribution: " "whether time %s is in range [%s, %s]", result.str().c_str(), tmin.str().c_str(), tmax.str().c_str()); verbose_assert((tmin <= result) && (result <= tmax), msg.c_str()); } int main(int argc, char * const argv[]) { int ret_value = 0; // // Initialize and start xlog // xlog_init(argv[0], NULL); xlog_set_verbose(XLOG_VERBOSE_LOW); // Least verbose messages // XXX: verbosity of the error messages temporary increased xlog_level_set_verbose(XLOG_LEVEL_ERROR, XLOG_VERBOSE_HIGH); xlog_add_default_output(); xlog_start(); int ch; while ((ch = getopt(argc, argv, "hv")) != -1) { switch (ch) { case 'v': set_verbose(true); break; case 'h': case '?': default: usage(argv[0]); xlog_stop(); xlog_exit(); if (ch == 'h') return (0); else return (1); } } argc -= optind; argv += optind; XorpUnexpectedHandler x(xorp_unexpected_handler); try { test_timeval_constants(); test_timeval_operators(); test_timeval_random_uniform(); ret_value = failures() ? 1 : 0; } catch (...) { // Internal error xorp_print_standard_exceptions(); ret_value = 2; } // // Gracefully stop and exit xlog // xlog_stop(); xlog_exit(); return (ret_value); }