mirror of
https://github.com/catchorg/Catch2.git
synced 2025-11-03 16:42:00 +01:00
149 lines
4.5 KiB
Python
Executable File
149 lines
4.5 KiB
Python
Executable File
#!/usr/bin/env python3
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from __future__ import print_function
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import time, subprocess, sys, os, shutil, glob, random
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import argparse
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def median(lst):
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lst = sorted(lst)
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mid, odd = divmod(len(lst), 2)
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if odd:
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return lst[mid]
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else:
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return (lst[mid - 1] + lst[mid]) / 2.0
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def mean(lst):
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return float(sum(lst)) / max(len(lst), 1)
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compiler_path = ''
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flags = []
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main_file = r'''
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#define CATCH_CONFIG_MAIN
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#include "catch.hpp"
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'''
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main_name = 'catch-main.cpp'
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dir_name = 'benchmark-dir'
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files = 20
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test_cases_in_file = 20
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sections_in_file = 4
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assertions_per_section = 5
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checks = [
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'a != b', 'a != c', 'a != d', 'a != e', 'b != c', 'b != d', 'b != e', 'c != d', 'c != e', 'd != e', 'a + a == a',
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'a + b == b', 'a + c == c', 'a + d == d', 'a + e == e', 'b + a == b', 'b + b == c', 'b + c == d',
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'b + d == e', 'c + a == c', 'c + b == d', 'c + c == e', 'd + a == d', 'd + b == e', 'e + a == e',
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'a + a + a == a', 'b + c == a + d', 'c + a + a == a + b + b + a',
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'a < b', 'b < c', 'c < d', 'd < e', 'a >= a', 'd >= b',
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]
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def create_temp_dir():
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if os.path.exists(dir_name):
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shutil.rmtree(dir_name)
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os.mkdir(dir_name)
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def copy_catch(path_to_catch):
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shutil.copy(path_to_catch, dir_name)
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def create_catch_main():
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with open(main_name, 'w') as f:
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f.write(main_file)
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def compile_main():
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start_t = time.time()
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subprocess.check_call([compiler_path, main_name, '-c'] + flags)
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end_t = time.time()
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return end_t - start_t
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def compile_files():
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cpp_files = glob.glob('tests*.cpp')
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start_t = time.time()
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subprocess.check_call([compiler_path, '-c'] + flags + cpp_files)
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end_t = time.time()
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return end_t - start_t
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def link_files():
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obj_files = glob.glob('*.o')
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start_t = time.time()
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subprocess.check_call([compiler_path] + flags + obj_files)
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end_t = time.time()
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return end_t - start_t
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def benchmark(func):
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results = [func() for i in range(10)]
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return mean(results), median(results)
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def char_range(start, end):
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for c in range(ord(start), ord(end)):
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yield chr(c)
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def generate_sections(fd):
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for i in range(sections_in_file):
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fd.write(' SECTION("Section {}") {{\n'.format(i))
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fd.write('\n'.join(' CHECK({});'.format(check) for check in random.sample(checks, assertions_per_section)))
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fd.write(' }\n')
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def generate_file(file_no):
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with open('tests{}.cpp'.format(file_no), 'w') as f:
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f.write('#include "catch.hpp"\n\n')
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for i in range(test_cases_in_file):
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f.write('TEST_CASE("File {} test {}", "[.compile]"){{\n'.format(file_no, i))
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for i, c in enumerate(char_range('a', 'f')):
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f.write(' int {} = {};\n'.format(c, i))
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generate_sections(f)
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f.write('}\n\n')
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def generate_files():
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create_catch_main()
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for i in range(files):
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generate_file(i)
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options = ['all', 'main', 'files', 'link']
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parser = argparse.ArgumentParser(description='Benchmarks Catch\'s compile times against some synthetic tests')
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# Add first arg -- benchmark type
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parser.add_argument('benchmark_kind', nargs='?', default='all', choices=options, help='What kind of benchmark to run, default: all')
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# Args to allow changing header/compiler
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parser.add_argument('-I', '--catch-header', default='catch.hpp', help = 'Path to catch.hpp, default: catch.hpp')
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parser.add_argument('-c', '--compiler', default='g++', help = 'Compiler to use, default: g++')
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parser.add_argument('-f', '--flags', help = 'Flags to be passed to the compiler. Pass as "," separated list')
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# Allow creating files only, without running the whole thing
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parser.add_argument('-g', '--generate-files', action='store_true', help='Generate test files and quit')
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args = parser.parse_args()
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compiler_path = args.compiler
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catch_path = args.catch_header
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if args.generate_files:
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create_temp_dir()
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copy_catch(catch_path)
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os.chdir(dir_name)
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# now create the fake test files
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generate_files()
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# Early exit
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print('Finished generating files')
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exit(1)
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os.chdir(dir_name)
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if args.flags:
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flags = args.flags.split(',')
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print('Time needed for ...')
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if args.benchmark_kind in ('all', 'main'):
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print(' ... compiling main, mean: {:.2f}, median: {:.2f} s'.format(*benchmark(compile_main)))
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if args.benchmark_kind in ('all', 'files'):
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print(' ... compiling test files, mean: {:.2f}, median: {:.2f} s'.format(*benchmark(compile_files)))
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if args.benchmark_kind in ('all', 'link'):
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print(' ... linking everything, mean: {:.2f}, median: {:.2f} s'.format(*benchmark(link_files)))
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