def test_empty(self):
print("""
This happens when you do not correctly handle a license with no other data.
""")
enter()
from LabD6 import Plates
plates = Plates('sampleplates.txt')
self.assertEqual(plates.findByPlate('MZZZ000'), [])
exit()
def test_none(self):
print("""
This happens when you do not correctly handle the license "None".
""")
enter()
from LabD6 import Plates
plates = Plates('sampleplates.txt')
self.assertEqual(plates.findByPlate('None'), ['None'])
exit()
def test_missing(self):
print("""
This happens when you do not correctly return None when not found.
""")
enter()
from LabD6 import Plates
plates = Plates('sampleplates.txt')
self.assertEqual(plates.findByPlate('NOVELPLATE'), None)
exit()
def test_big(self):
print("""
This happens when you do not correctly return None for something too big.
""")
enter()
from LabD6 import Plates
plates = Plates('sampleplates.txt')
self.assertEqual(plates.findByPlate('ZYD2068'), None)
exit()
def test_altfile(self):
print("""
This happens when you do not correctly read the specified filename.
""")
enter()
from LabD6 import Plates
plates = Plates('other.txt')
self.assertEqual(plates.findByPlate('8LW1A4F'), \
['Meaningless notes about car with plate 8LW1A4F'])
exit()
def test_middle(self):
print("""
This happens when you do not correctly return an arbitrary item in the list.
""")
enter()
from LabD6 import Plates
plates = Plates('sampleplates.txt')
self.assertEqual(plates.findByPlate('AY6D670'), \
['Meaningless notes about car with plate AY6D670'])
exit()
def test_last(self):
print("""
This happens when you do not correctly return the last item in the file.
""")
enter()
from LabD6 import Plates
plates = Plates('sampleplates.txt')
self.assertEqual(plates.findByPlate('Y2C5NSM'), \
['Meaningless notes about car with plate Y2C5NSM'])
exit()
def test_first(self):
print("""
This happens when you do not correctly return the first item in the file.
""")
enter()
from LabD6 import Plates
plates = Plates('sampleplates.txt')
self.assertEqual(plates.findByPlate('GPA1905'), ['Chevrolet', \
'Corvette Coupe', '2008', 'pink', 'Sylvia Cheers'])
exit()
def test_sortedlast(self):
print("""
This happens when you do not correctly return the last licence plate
in sorted order.
""")
enter()
from LabD6 import Plates
plates = Plates('sampleplates.txt')
self.assertEqual(plates.findByPlate('ZYD2067'),
['Meaningless notes about car with plate ZYD2067'])
exit()
def test_sortedfirst(self):
print("""
This happens when you do not correctly return the first item in the file
by sorted order.
""")
enter()
from LabD6 import Plates
plates = Plates('sampleplates.txt')
self.assertEqual(plates.findByPlate('0015V73'), \
['Meaningless notes about car with plate 0015V73'])
exit()
def test_no_output(self):
# Based on code from user1200039 http://stackoverflow.com/questions/5136611/capture-stdout-from-a-script-in-python
import sys
from io import StringIO
from LabD6 import Plates
print("""
Most commonly your program fails this test if you use a print statement
in your sort_hand function. You must not print anything in this function.
Instead, you should return the location so that the test code can access it.
Wrong:
def add(a, b):
""\" Add a and b.""\"
print(a+b)
Right:
def add(a, b):
""\" Return the sum of a and b.""\"
return a+b
""")
enter()
oldout = sys.stdout
buf = StringIO()
try:
sys.stdout = buf
Plates('sampleplates.txt').findByPlate('Test')
finally:
sys.stdout = oldout
self.assertEqual(len(buf.getvalue()), 0)
exit()
def test_timing(self):
enter(1200)
from random import shuffle
import sys
from time import process_time
from LabD6 import Plates
plates = Plates('huge.txt')
targ = []
with open('hugetargets.txt', 'r') as targets:
for line in targets:
targ.append(line.rstrip())
start = process_time()
for t in targ:
plates.findByPlate(t)
time = (process_time() - start) * 100
print(time)
for i in range(1, 100):
with self.subTest(time=i):
self.assertLessEqual(
time,
i,
msg="This tests the time required to process 10000 queries."
)
exit()