test_discounts.py |
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1 #!/usr/bin/python2 2 3 ####################################### 4 # 5 # This script does component test for functionality: 6 # generate discount rate depending on number of books 7 # 8 # Version: 1.2 9 # 10 ####################################### 11 12 #import everything from lib.py 13 14 from lib import * 15 16 #import everything from qalib.py - this is our library for test functions 17 18 from qalib import * 19 20 #import function get_discount() from shopping_cart.py 21 22 from shopping_cart import get_discount 23 24 #get dictionary of values from web form 25 26 form = cgi.FieldStorage() 27 28 #run_flag is a flag. If run_flag == 1, we run test 29 30 try: 31 run_flag = form['run_flag'].value 32 except: 33 run_flag = 0 34 35 #function to run test 36 37 def get_actual_result(): 38 39 #here is the deal: we feed numbers 1-20000 inclusively to function 40 #get_discount() and see discount rate given to us. 41 #Then we create HTML table with results 42 43 min_number = 1 44 max_number = 20000 45 46 47 #rs (result) dictionary 48 rs_dict = {} 49 50 #create a dictionary 51 52 for i in range(min_number,max_number+1): 53 54 discount = get_discount(i) 55 56 rs_dict[i] = discount 57 58 #now we have a dict where key is number of books and value is discount rate 59 #Example: {1:0,2:0} 60 61 #next task is to do sorting to find ranges (equivalent classes) where the same rate applies 62 63 range_list = [] 64 65 #format of each element of this list: 66 #<first number of range>,<last number of range>,<discount> 67 68 for i in range(min_number,max_number+1): 69 70 discount = rs_dict[i] #get discount for each number of books 71 72 if i == min_number: #in case if this is first number 73 74 start_range = min_number 75 end_range = min_number 76 pre_discount = None 77 78 if pre_discount != discount: #if new discount rate is found 79 80 if i != min_number: 81 82 #create element of range_list and append it to range_list 83 84 new_range = str(pre_start_range)+","+str(i-1)+","+str(pre_discount) 85 range_list.append(new_range) 86 87 start_range = i 88 89 #two variables below are needed to transfer 90 #values of corresponding variables from current iteration 91 #into next iteration 92 93 pre_discount = discount 94 pre_start_range = start_range 95 96 return range_list 97 98 #function to display first page 99 100 def page_one(message = ''): 101 102 html = """ 103 104 <center> 105 106 <h2>Test Discounts</h2> 107 108 <p><font color='red'><b>%s</b></font> 109 110 <hr> 111 112 <p><b>EXPECTED RESULT:</b> 113 114 <p><a href = '../test_discounts_ER.txt'>test_discounts_ER.txt</a> 115 116 <hr> 117 118 <p><b>ACTUAL RESULT:</b> 119 120 <form action='./test_discounts.py'> 121 122 <input type='hidden' name='run_flag' value='1'> 123 124 <p><input type='submit' value='Run Test'> 125 126 </form> 127 128 </center> 129 130 """ % message 131 132 return html 133 134 #function to display second page 135 136 def page_two(): 137 138 #get list with actual results 139 #we'll use 'a_' to start variable names of actual stuff 140 #and 'e_' to start variable names of expected stuff 141 142 a_list = get_actual_result() 143 144 html = """ 145 146 <center> 147 148 <h3>Test Results</h3> 149 150 <table border=1 align=center cellpadding=5> 151 152 <tr> 153 154 <td colspan=2 align=center>EXPECTED</td> 155 <td colspan=2 align=center>ACTUAL</td> 156 <td>RESULT</td> 157 158 </tr> 159 160 <tr> 161 162 <td align=center><b>Number of books</b></td> 163 <td align=center><b>Discount Rate</b></td> 164 <td align=center><b>Number of books</b></td> 165 <td align=center><b>Discount Rate</b></td> 166 167 </tr>""" 168 169 #get expected results 170 171 e_dict = {} 172 e_list = [] 173 174 file = open('../www/test_discounts_ER.txt','r') 175 176 for i in file.readlines(): 177 178 start_range = i.split(',')[0] 179 end_range = i.split(',')[1] 180 discount = i.split(',')[2] 181 182 #remove unprintable chars at the end of the line 183 discount = re.sub('\r','',discount) 184 discount = re.sub('\n','',discount) 185 186 e_dict[discount] = start_range+','+end_range 187 188 e_list.append(start_range+','+end_range+','+discount) 189 190 file.close() 191 192 e_discount_list = e_dict.keys() 193 e_discount_list.sort() 194 195 #go through each expected discount rate 196 197 for e_discount in e_discount_list: 198 199 e_start_range = e_dict[e_discount].split(',')[0] 200 e_end_range = e_dict[e_discount].split(',')[1] 201 202 #this flag is needed to indicate if corresponding discount 203 #rate was found in a_list or not 204 205 is_found = 0 206 207 for i in a_list: 208 209 a_start_range = i.split(',')[0] 210 a_end_range = i.split(',')[1] 211 a_discount = i.split(',')[2] 212 213 if e_discount == a_discount: 214 215 is_found = 1 216 217 if e_start_range == a_start_range and e_end_range == a_end_range: 218 219 result = 'PASS' 220 bg_color = 'greenyellow' 221 else: 222 result = 'FAIL' 223 bg_color = 'red' 224 225 break 226 227 228 #case when expected discount was not found at all 229 230 if is_found ==0: 231 232 a_start_range = 'none' 233 a_end_range = 'none' 234 a_discount = 'none' 235 result = 'FAIL' 236 bg_color = 'red' 237 238 239 #create html 240 241 html = html + """ 242 243 <tr> 244 245 <td align=center>%s-%s</td> 246 <td align=center>%s</td> 247 248 <td align=center>%s-%s</td> 249 <td align=center>%s</td> 250 251 <td align=center bgcolor = '%s'>%s</td> 252 253 </tr>""" % (e_start_range,e_end_range,e_discount,\ 254 a_start_range,a_end_range,a_discount,\ 255 bg_color,result) 256 257 html = html + "</center></table><hr>" 258 259 #show raw test data 260 261 html = html + "<p><b>Test Data:</b><p>Expected: %s<p>Actual: %s" % (str(e_list),str(a_list)) 262 263 264 return html 265 266 print 'Content-Type: text/html\n\n' 267 268 269 if int(run_flag) == 0: 270 271 html = page_one() 272 273 else: 274 275 html = page_two() 276 277 html = get_qa_html(html) 278 279 print html 280