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"""Tests for Coverage.py's arc measurement."""
import os, sys
sys.path.insert(0, os.path.split(__file__)[0]) # Force relative import for Py3k
from coveragetest import CoverageTest
class SimpleArcTest(CoverageTest):
"""Tests for Coverage.py's arc measurement."""
def test_simple_sequence(self):
self.check_coverage("""\
a = 1
b = 2
""",
arcz=".1 12 2.")
self.check_coverage("""\
a = 1
b = 3
""",
arcz=".1 13 3.")
self.check_coverage("""\
a = 2
b = 3
c = 5
""",
arcz=".2 23 35 5.")
def test_function_def(self):
self.check_coverage("""\
def foo():
a = 2
foo()
""",
arcz=".1 .2 14 2. 4.")
def test_if(self):
self.check_coverage("""\
a = 1
if len([]) == 0:
a = 3
assert a == 3
""",
arcz=".1 12 23 24 34 4.", arcz_missing="24")
self.check_coverage("""\
a = 1
if len([]) == 1:
a = 3
assert a == 1
""",
arcz=".1 12 23 24 34 4.", arcz_missing="23 34")
def test_if_else(self):
self.check_coverage("""\
if len([]) == 0:
a = 2
else:
a = 4
assert a == 2
""",
arcz=".1 12 25 14 45 5.", arcz_missing="14 45")
self.check_coverage("""\
if len([]) == 1:
a = 2
else:
a = 4
assert a == 4
""",
arcz=".1 12 25 14 45 5.", arcz_missing="12 25")
class LoopArcTest(CoverageTest):
"""Arc-measuring tests involving loops."""
def test_loop(self):
self.check_coverage("""\
for i in range(10):
a = i
assert a == 9
""",
arcz=".1 12 21 13 3.", arcz_missing="")
self.check_coverage("""\
a = -1
for i in range(0):
a = i
assert a == -1
""",
arcz=".1 12 23 32 24 4.", arcz_missing="23 32")
def test_nested_loop(self):
self.check_coverage("""\
for i in range(3):
for j in range(3):
a = i + j
assert a == 4
""",
arcz=".1 12 23 32 21 14 4.", arcz_missing="")
def test_break(self):
self.check_coverage("""\
for i in range(10):
a = i
break # 3
a = 99
assert a == 0 # 5
""",
arcz=".1 12 23 35 15 41 5.", arcz_missing="15 41")
def test_continue(self):
self.check_coverage("""\
for i in range(10):
a = i
continue # 3
a = 99
assert a == 9 # 5
""",
arcz=".1 12 23 31 15 41 5.", arcz_missing="41")
def test_nested_breaks(self):
self.check_coverage("""\
for i in range(3):
for j in range(3):
a = i + j
break # 4
if i == 2:
break
assert a == 2 and i == 2 # 7
""",
arcz=".1 12 23 34 45 25 56 51 67 17 7.", arcz_missing="17 25")
class ExceptionArcTest(CoverageTest):
def test_no_exception(self):
self.check_coverage("""\
a, b = 1, 1
try:
a = 3
except:
b = 5
assert a == 3 and b == 1
""",
arcz=".1 12 23 36 45 56 6.", arcz_missing="45 56")
def test_raise(self):
self.check_coverage("""\
a, b = 1, 1
try:
a = 3
raise Exception("Yikes!")
a = 5
except:
b = 7
assert a == 3 and b == 7
""",
arcz=".1 12 23 34 58 67 78 8.",
arcz_missing="58", arcz_unpredicted="46")
def xest_xx(self):
self.check_coverage("""\
""",
arcz="", arcz_missing="")
|
