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# Licensed under the Apache License: http://www.apache.org/licenses/LICENSE-2.0
# For details: https://bitbucket.org/ned/coveragepy/src/default/NOTICE.txt
"""Tests for coverage.py's results analysis."""
import pytest
from coverage.results import Numbers, should_fail_under
from tests.coveragetest import CoverageTest
class NumbersTest(CoverageTest):
"""Tests for coverage.py's numeric measurement summaries."""
run_in_temp_dir = False
def test_basic(self):
n1 = Numbers(n_files=1, n_statements=200, n_missing=20)
self.assertEqual(n1.n_statements, 200)
self.assertEqual(n1.n_executed, 180)
self.assertEqual(n1.n_missing, 20)
self.assertEqual(n1.pc_covered, 90)
def test_addition(self):
n1 = Numbers(n_files=1, n_statements=200, n_missing=20)
n2 = Numbers(n_files=1, n_statements=10, n_missing=8)
n3 = n1 + n2
self.assertEqual(n3.n_files, 2)
self.assertEqual(n3.n_statements, 210)
self.assertEqual(n3.n_executed, 182)
self.assertEqual(n3.n_missing, 28)
self.assertAlmostEqual(n3.pc_covered, 86.666666666)
def test_sum(self):
n1 = Numbers(n_files=1, n_statements=200, n_missing=20)
n2 = Numbers(n_files=1, n_statements=10, n_missing=8)
n3 = sum([n1, n2])
self.assertEqual(n3.n_files, 2)
self.assertEqual(n3.n_statements, 210)
self.assertEqual(n3.n_executed, 182)
self.assertEqual(n3.n_missing, 28)
self.assertAlmostEqual(n3.pc_covered, 86.666666666)
def test_pc_covered_str(self):
# Numbers._precision is a global, which is bad.
Numbers.set_precision(0)
n0 = Numbers(n_files=1, n_statements=1000, n_missing=0)
n1 = Numbers(n_files=1, n_statements=1000, n_missing=1)
n999 = Numbers(n_files=1, n_statements=1000, n_missing=999)
n1000 = Numbers(n_files=1, n_statements=1000, n_missing=1000)
self.assertEqual(n0.pc_covered_str, "100")
self.assertEqual(n1.pc_covered_str, "99")
self.assertEqual(n999.pc_covered_str, "1")
self.assertEqual(n1000.pc_covered_str, "0")
def test_pc_covered_str_precision(self):
# Numbers._precision is a global, which is bad.
Numbers.set_precision(1)
n0 = Numbers(n_files=1, n_statements=10000, n_missing=0)
n1 = Numbers(n_files=1, n_statements=10000, n_missing=1)
n9999 = Numbers(n_files=1, n_statements=10000, n_missing=9999)
n10000 = Numbers(n_files=1, n_statements=10000, n_missing=10000)
self.assertEqual(n0.pc_covered_str, "100.0")
self.assertEqual(n1.pc_covered_str, "99.9")
self.assertEqual(n9999.pc_covered_str, "0.1")
self.assertEqual(n10000.pc_covered_str, "0.0")
Numbers.set_precision(0)
def test_covered_ratio(self):
n = Numbers(n_files=1, n_statements=200, n_missing=47)
self.assertEqual(n.ratio_covered, (153, 200))
n = Numbers(
n_files=1, n_statements=200, n_missing=47,
n_branches=10, n_missing_branches=3, n_partial_branches=1000,
)
self.assertEqual(n.ratio_covered, (160, 210))
@pytest.mark.parametrize("total, fail_under, result", [
# fail_under==0 means anything is fine!
(0, 0, False),
(0.001, 0, False),
# very small fail_under is possible to fail.
(0.001, 0.01, True),
# Rounding should work properly.
(42.1, 42, False),
(42.1, 43, True),
(42.857, 42, False),
(42.857, 43, False),
(42.857, 44, True),
# Values near 100 should only be treated as 100 if they are 100.
(99.8, 100, True),
(100.0, 100, False),
])
def test_should_fail_under(total, fail_under, result):
assert should_fail_under(total, fail_under) == result
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