def test_display_cache():
"""should display table for direct-mapped/set associative cache"""
out = io.StringIO()
with contextlib.redirect_stdout(out):
sim.display_cache({
'000': [
{'tag': '0101', 'data': [88, 89]}
],
'001': [
{'tag': '0000', 'data': [2, 3]},
{'tag': '0010', 'data': [42, 43]},
]
})
table_output = out.getvalue()
num_cols = 2
col_width = TABLE_WIDTH // num_cols
nose.assert_regexp_matches(
table_output, '{}\n{}'.format(
'Cache'.center(TABLE_WIDTH),
('-' * TABLE_WIDTH)))
nose.assert_equal(
table_output.count('-'), TABLE_WIDTH * 2)
nose.assert_regexp_matches(
table_output, r'{}{}'.format(
'000'.center(col_width),
'001'.center(col_width)))
nose.assert_regexp_matches(
table_output, r'{}{}'.format(
'88,89'.center(col_width),
'2,3 42,43'.center(col_width)))
def test_display_cache_fully_assoc():
"""should correctly display table for fully associative cache"""
out = io.StringIO()
with contextlib.redirect_stdout(out):
sim.display_cache({
'0': [
{'tag': '0000001', 'data': [2, 3]},
{'tag': '1111110', 'data': [252, 253]}
]
})
table_output = out.getvalue()
nose.assert_regexp_matches(
table_output, '{}\n{}'.format(
'Cache'.center(TABLE_WIDTH),
('-' * TABLE_WIDTH)))
nose.assert_equal(
table_output.count('-'), TABLE_WIDTH)
nose.assert_regexp_matches(
table_output, '2,3 252,253'.center(TABLE_WIDTH))