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test_increment_display.py

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test_increment_display.py

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import unittest
from memory_profiler import LineProfiler, profile, show_results
from io import StringIO
class TestIncrementDisplay(unittest.TestCase):
"""Tests memory incrementation / decrementation display"""
def test_loop_count(self):
def some_loop():
for i in range(12): # line -2
a = 1 # line -1
profiler = LineProfiler()
wrapped = profiler(some_loop)
wrapped()
show_results(profiler)
for_line = list(list(profiler.code_map.values())[0].values())[-2]
looped_instruction = list(list(profiler.code_map.values())[0].values())[-1]
self.assertEqual(for_line[2], 13)
self.assertEqual(looped_instruction[2], 12)
def test_normal_incr(self):
def normal_incr():
use_some_memory = [1] * (10 ** 6)
profiler = LineProfiler()
wrapped = profiler(normal_incr)
wrapped()
show_results(profiler)
results = list(list(profiler.code_map.values())[0].values())[-1]
self.assertGreater(results[0], 0)
self.assertGreater(results[1], results[0])
self.assertEqual(results[2], 1)
def test_loop_incr(self):
def loop_incr():
a = []
b = [2] * (2 * 10 ** 7) # line -4
for i in range(3):
c = [2] * (2 * 10 ** 7) # line -2
a.append(c)
profiler = LineProfiler()
wrapped = profiler(loop_incr)
wrapped()
show_results(profiler)
b_line = list(list(profiler.code_map.values())[0].values())[-4]
c_line = list(list(profiler.code_map.values())[0].values())[-2]
self.assertAlmostEqual(b_line[2] * 3, c_line[2], delta=1)
self.assertEqual(c_line[2], 3)
def test_decr(self):
def del_stuff():
b = [2] * (2 * 10 ** 7)
del b
profiler = LineProfiler()
wrapped = profiler(del_stuff)
wrapped()
show_results(profiler)
b_line = list(list(profiler.code_map.values())[0].values())[-2]
del_line = list(list(profiler.code_map.values())[0].values())[-1]
self.assertGreater(0, del_line[0])
self.assertGreater(del_line[1], 0)
self.assertAlmostEqual(-del_line[0], b_line[0], delta=1)
if __name__ == '__main__':
unittest.main()
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