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How to use generate_test method in autotest

Best Python code snippet using autotest_python

autograder.py

Source:autograder.py

1#!/usr/bin/python32import random3import os4import datetime5import subprocess6import struct7import sys8# https://stackoverflow.com/questions/16444726/binary-representation-of-float-in-python-bits-not-hex9def binary(num):10    return ''.join('{:0>8b}'.format(c) for c in struct.pack('!d', num))11def generate_test ( filenum, double=1.0, path="./" ):12    with open("{}tests/test{}.txt".format(path,filenum), "w") as infile:13        infile.write( str(double) )14    with open("{}answers/answer{}.txt".format(path,filenum), "w") as outfile:15        bits = binary(double)16        outfile.write( bits[0] + '_' + bits[1:12] + '_' + bits[12:] )17def generate_test_suite():18    os.makedirs("tests", exist_ok=True)19    os.makedirs("answers", exist_ok=True)20    generate_test ( 0, 0.0 )21    generate_test ( 1, 1.0 )22    generate_test ( 2, -2.0 )23    generate_test ( 3, -0.5 )24    generate_test ( 4, -5./32 )25    generate_test ( 5, 3.625*16 )26def test_doubleToBin ( filenum, path="./", verbose=False ):27    try:28        with open("{}answers/answer{}.txt".format(path,filenum), "r") as outfile:29            answer = outfile.read()30    except EnvironmentError: # parent of IOError, OSError31        print ("answers/answer{}.txt missing".format(filenum))32    try:33        result = subprocess.run(34            ['./doubleToBin', "tests/test{}.txt".format(filenum)],35            cwd=path,36            check=True,37            stdout=subprocess.PIPE,38            stderr=subprocess.STDOUT,39            encoding='ASCII',40            timeout=datetime.timedelta(seconds=4).total_seconds(),41        )42        if verbose:43            print (' '.join(result.args))44            print ("answer")45            print (answer)46            print ("result")47            print (result.stdout)48        assert answer.replace('_','') == result.stdout.replace('_',''), "The printed result doesn't match answers/answer{}.txt. You can add underscores as needed for readability".format(filenum)49        return True50    except subprocess.CalledProcessError as e:51        print (e.stdout)52        print ("Calling ./doubleToBin returned non-zero exit status.")53    except ValueError as e:54        print (result.stdout)55        print ("Please check your output formatting; it should be formatted as a binary number.")56    except AssertionError as e:57        print (result.stdout)58        print (e.args[0])59    return False60def grade_doubleToBin( path='./', verbose=False ):61    score = 062    try:63        subprocess.run( ['make', '-B'], cwd=path, check=True, )64    except subprocess.CalledProcessError as e:65        print ("Couldn't compile doubleToBin.")66        return score67    if test_doubleToBin(0,path,verbose):68        score += 269        if test_doubleToBin(1,path,verbose):70            score += 271            if test_doubleToBin(2,path,verbose):72                score += 273                if test_doubleToBin(3,path,verbose):74                    score += 275                    if test_doubleToBin(4,path,verbose):76                        score += 377                        if test_doubleToBin(5,path,verbose):78                            score += 379                            # standard range test80                            allpass = True81                            for filenum in range(6,10):82                                generate_test (83                                    filenum,84                                    double = random.uniform(85                                        -65536.0,86                                        +65536.0,87                                    ),88                                    path=path89                                )90                                allpass &= test_doubleToBin(filenum,path,verbose)91                            if allpass:92                                score += 393                            # high magnitude test94                            allpass = True95                            for filenum in range(10,14):96                                generate_test (97                                    filenum,98                                    double = random.uniform(99                                        0.,100                                        sys.float_info.max101                                    ),102                                    path=path103                                )104                                allpass &= test_doubleToBin(filenum,path,verbose)105                            if allpass:106                                score += 3107                            # denormalized range test108                            allpass = True109                            for filenum in range(14,18):110                                generate_test (111                                    filenum,112                                    double = random.uniform(113                                        -sys.float_info.min,114                                         sys.float_info.min,115                                    ),116                                    path=path117                                )118                                allpass &= test_doubleToBin(filenum,path,verbose)119                            if allpass:120                                score += 3121                            # negative zero test122                            generate_test ( 18, -0.0, path=path )123                            if test_doubleToBin(16,path,verbose):124                                score += 1125    print ("Score on doubleToBin: {} out of 24.".format(score))126    return score127if __name__ == '__main__':128    # generate_test_suite()129    grade_doubleToBin(verbose=True)...

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