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dfa_testing.py
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dfa_testing.py
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#!/usr/bin/python
import sys, re;
import math as M;
import random as R;
import string as S;
import data_io as DIO;
import test_generation as GENT;
## BEGIN TEST CLASS ===================
## ===================================>
class dfa_tests:
def __init__(self, name):
self.name = name;
self.test_files = [];
self.test_dir = "./";
self.curr_test_file = "";
self.test_len_parameter = 0;
self.test_lines = [];
self.legal_symbols = [];
self.legal_states = [];
self.tests = {};
def set_test_directory(self, new_dir):
self.test_dir = new_dir;
def set_len_parameter(self, new_len):
self.test_len_parameter = new_len;
def set_legal_symbols(self, symbols):
self.legal_symbols = symbols;
def set_legal_states(self, states):
self.legal_states = states;
def assert_tst(self, descriptor, condition):
sys.stderr.write("TEST Exception: "+\
str(descriptor)+'\t'+str(condition)+'\n');
def err_tst(self, descriptor, condition):
sys.stderr.write("TEST irrecoverable ERROR: " \
+ str(descriptor) + '\t' + str(condition)+'\n');
sys.exit(0);
## TEST SETUP FUNCTIONS ================================ ##
def set_test_dir(self, new_dir):
self.test_dir = new_dir;
if (self.test_dir.strip() != "./"):
self.test_dir_set = 1;
self.candidate_files = DIO.get_files_x(self.test_dir);
def symcheck_test_line(self, line):
passed = 1;
for lit in line:
if (lit not in self.legal_symbols):
passed = 0;
self.err_tst("TEST CHAR not a legal symbol in ", lit);
return passed;
def baseline_symcheck_test_line(self, line):
passed = 1;
if (not DIO.regex_alphanum.match(line)):
passed = 0;
self.err_tst("TEST CHAR not a legal symbol in ", line);
return passed;
def read_test_file(self):
curr_test = {};
lines = DIO.read_file(self.curr_test_file);
test_name = lines[0].strip();
for line in lines[1:len(lines)]:
words = line.strip().split();
if (len(words) != 4):
self.assert_tst("TEST ENTRY FORMAT INCORRECT", len(words));
continue;
name = words[0];
try:
score = int(words[1]);
except:
self.assert_tst("TEST SCORE FORMAT INCORRECT", score);
continue;
start = words[2];
if (not self.baseline_symcheck_test_line(words[3])):
self.assert_tst("TEST SYMBOL FORMAT INCORRECT", score);
continue;
curr_test[name] = (words[3], score, start);
print test_name, curr_test;
self.tests[test_name] = curr_test;
def read_test_files(self):
self.test_files = DIO.get_files_x(self.test_dir);
self.tests = {};
for tfile in self.test_files:
self.curr_test_file = tfile;
self.read_test_file();
def show_tests(self):
for tname in self.tests:
print "DFA NAME:", tname;
for entry in self.tests[tname]:
print '\t', entry, "test_string:", \
self.tests[tname][entry][0], "max_score:", \
self.tests[tname][entry][1], "start_state:", \
self.tests[tname][entry][2];
sys.exit(0);
## RANDOM GENERATION =============================== ##
def setup_randgen_nonbin(self, length, symbol_dict, \
num_tests, default_score):
self.randgen = GENT.random_test();
self.randgen.set_symbols(symbol_dict, 0);
self.randgen.set_parameters(length, 0);
self.randgen_cnt = num_tests;
self.randgen_score = default_score;
def setup_randgen_bin(self, length, bias, num_tests, default_score):
self.randgen = GENT.random_test();
self.randgen.set_symbols({}, 1);
self.randgen.set_parameters(length, bias);
self.randgen_cnt = num_tests;
self.randgen_score = default_score;
def random_test_case(self, test_name):
curr_test = {};
name_base = "randtest";
default_start = 'x';
test_cnt = 0;
curr_test_cases = self.randgen.gen(self.randgen_cnt);
for test_case in curr_test_cases:
curr_test[name_base+str(test_cnt)] = \
(test_case, self.randgen_score, default_start);
test_cnt += 1;
self.tests[test_name] = curr_test;
def random_test_cases(self, dfa_names):
self.tests = {};
for name in dfa_names:
self.random_test_case(name);
## ADAPTIVE GENERATION ================================= ##
def setup_adaptive_bin(self, whether_continuous, length, \
outcome_bias, num_tests, default_score):
self.adaptive = GENT.adaptive_test();
self.adaptive.initialize_exe( \
whether_continuous, outcome_bias, default_score);
self.adaptive.set_symbols({}, 1);
self.adaptive.set_parameters(length, outcome_bias);
def adaptive_test_cases(self, selection_width, adapt_cnt):
name_cnt = 0;
for index in range(0, num_tests, 1):
new_name = "adapttest"+str(index);
self.tests[new_name] = \
self.adaptive.adapt(selection_width, adapt_cnt);
def check_dfa_legality(self, dfa_name):
for entry in self.tests[dfa_name]:
if (not self.symcheck_test_line(\
self.tests[dfa_name][entry][0])):
self.assert_tst("SYMBOL ILLEGAL", \
self.tests[dfa_name][entry][0]);
if ((self.tests[dfa_name][entry][2] not in self.legal_states) \
and (self.tests[dfa_name][entry][2].strip() != 'x')):
self.err_tst("START STATE ILLEGAL:", \
self.tests[dfa_name][entry][2]);
def present_test(self, dfa_name):
if (dfa_name not in self.tests.keys()):
self.err_tst("NO TEST EXIST FOR DFA:", dfa_name);
self.check_dfa_legality(dfa_name);
return self.tests[dfa_name];
## END TEST CLASS ===================
## <=================================