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-rw-r--r--tests/test_arcs.py141
1 files changed, 113 insertions, 28 deletions
diff --git a/tests/test_arcs.py b/tests/test_arcs.py
index b927526b..fb958a66 100644
--- a/tests/test_arcs.py
+++ b/tests/test_arcs.py
@@ -3,7 +3,9 @@
"""Tests for coverage.py's arc measurement."""
-from tests.coveragetest import CoverageTest
+import pytest
+
+from tests.coveragetest import CoverageTest, xfail
import coverage
from coverage import env
@@ -264,12 +266,17 @@ class LoopArcTest(CoverageTest):
""",
arcz=".1 12 23 34 45 25 56 51 67 17 7.", arcz_missing="17 25")
- def test_while_true(self):
+ def test_while_1(self):
# With "while 1", the loop knows it's constant.
- if env.PYBEHAVIOR.nix_while_true:
+ if env.PYBEHAVIOR.keep_constant_test:
+ arcz = ".1 12 23 34 45 36 62 57 7."
+ arcz_missing = ""
+ elif env.PYBEHAVIOR.nix_while_true:
arcz = ".1 13 34 45 36 63 57 7."
+ arcz_missing = ""
else:
arcz = ".1 12 23 34 45 36 63 57 7."
+ arcz_missing = ""
self.check_coverage("""\
a, i = 1, 0
while 1:
@@ -280,10 +287,15 @@ class LoopArcTest(CoverageTest):
assert a == 4 and i == 3
""",
arcz=arcz,
+ arcz_missing=arcz_missing,
)
+
+ def test_while_true(self):
# With "while True", 2.x thinks it's computation,
# 3.x thinks it's constant.
- if env.PYBEHAVIOR.nix_while_true:
+ if env.PYBEHAVIOR.keep_constant_test:
+ arcz = ".1 12 23 34 45 36 62 57 7."
+ elif env.PYBEHAVIOR.nix_while_true:
arcz = ".1 13 34 45 36 63 57 7."
elif env.PY3:
arcz = ".1 12 23 34 45 36 63 57 7."
@@ -311,7 +323,9 @@ class LoopArcTest(CoverageTest):
""")
out = self.run_command("coverage run --branch --source=. main.py")
self.assertEqual(out, 'done\n')
- if env.PYBEHAVIOR.nix_while_true:
+ if env.PYBEHAVIOR.keep_constant_test:
+ num_stmts = 3
+ elif env.PYBEHAVIOR.nix_while_true:
num_stmts = 2
else:
num_stmts = 3
@@ -323,7 +337,9 @@ class LoopArcTest(CoverageTest):
def test_bug_496_continue_in_constant_while(self):
# https://github.com/nedbat/coveragepy/issues/496
# A continue in a while-true needs to jump to the right place.
- if env.PYBEHAVIOR.nix_while_true:
+ if env.PYBEHAVIOR.keep_constant_test:
+ arcz = ".1 12 23 34 45 52 46 67 7."
+ elif env.PYBEHAVIOR.nix_while_true:
arcz = ".1 13 34 45 53 46 67 7."
elif env.PY3:
arcz = ".1 12 23 34 45 53 46 67 7."
@@ -1111,38 +1127,75 @@ class OptimizedIfTest(CoverageTest):
"""Tests of if statements being optimized away."""
def test_optimized_away_if_0(self):
+ if env.PYBEHAVIOR.keep_constant_test:
+ lines = [1, 2, 3, 4, 8, 9]
+ arcz = ".1 12 23 24 34 48 49 89 9."
+ arcz_missing = "24"
+ # 49 isn't missing because line 4 is matched by the default partial
+ # exclusion regex, and no branches are considered missing if they
+ # start from an excluded line.
+ else:
+ lines = [1, 2, 3, 8, 9]
+ arcz = ".1 12 23 28 38 89 9."
+ arcz_missing = "28"
+
self.check_coverage("""\
a = 1
if len([2]):
c = 3
- if 0: # this line isn't in the compiled code.
+ if 0:
if len([5]):
d = 6
else:
e = 8
f = 9
""",
- lines=[1, 2, 3, 8, 9],
- arcz=".1 12 23 28 38 89 9.",
- arcz_missing="28",
+ lines=lines,
+ arcz=arcz,
+ arcz_missing=arcz_missing,
)
def test_optimized_away_if_1(self):
+ if env.PYBEHAVIOR.keep_constant_test:
+ lines = [1, 2, 3, 4, 5, 6, 9]
+ arcz = ".1 12 23 24 34 45 49 56 69 59 9."
+ arcz_missing = "24 59"
+ # 49 isn't missing because line 4 is matched by the default partial
+ # exclusion regex, and no branches are considered missing if they
+ # start from an excluded line.
+ else:
+ lines = [1, 2, 3, 5, 6, 9]
+ arcz = ".1 12 23 25 35 56 69 59 9."
+ arcz_missing = "25 59"
+
self.check_coverage("""\
a = 1
if len([2]):
c = 3
- if 1: # this line isn't in the compiled code,
- if len([5]): # but these are.
+ if 1:
+ if len([5]):
d = 6
else:
e = 8
f = 9
""",
- lines=[1, 2, 3, 5, 6, 9],
- arcz=".1 12 23 25 35 56 69 59 9.",
- arcz_missing="25 59",
+ lines=lines,
+ arcz=arcz,
+ arcz_missing=arcz_missing,
)
+
+ def test_optimized_away_if_1_no_else(self):
+ if env.PYBEHAVIOR.keep_constant_test:
+ lines = [1, 2, 3, 4, 5]
+ arcz = ".1 12 23 25 34 45 5."
+ arcz_missing = ""
+ # 25 isn't missing because line 2 is matched by the default partial
+ # exclusion regex, and no branches are considered missing if they
+ # start from an excluded line.
+ else:
+ lines = [1, 3, 4, 5]
+ arcz = ".1 13 34 45 5."
+ arcz_missing = ""
self.check_coverage("""\
a = 1
if 1:
@@ -1150,11 +1203,24 @@ class OptimizedIfTest(CoverageTest):
c = 4
d = 5
""",
- lines=[1, 3, 4, 5],
- arcz=".1 13 34 45 5.",
+ lines=lines,
+ arcz=arcz,
+ arcz_missing=arcz_missing,
)
- def test_optimized_nested(self):
+ def test_optimized_if_nested(self):
+ if env.PYBEHAVIOR.keep_constant_test:
+ lines = [1, 2, 8, 11, 12, 13, 14, 15]
+ arcz = ".1 12 28 2F 8B 8F BC CD DE EF F."
+ arcz_missing = ""
+ # 2F and 8F aren't missing because they're matched by the default
+ # partial exclusion regex, and no branches are considered missing
+ # if they start from an excluded line.
+ else:
+ lines = [1, 12, 14, 15]
+ arcz = ".1 1C CE EF F."
+ arcz_missing = ""
+
self.check_coverage("""\
a = 1
if 0:
@@ -1172,14 +1238,34 @@ class OptimizedIfTest(CoverageTest):
h = 14
i = 15
""",
- lines=[1, 12, 14, 15],
- arcz=".1 1C CE EF F.",
+ lines=lines,
+ arcz=arcz,
+ arcz_missing=arcz_missing,
)
+ def test_dunder_debug(self):
+ # Since some of our tests use __debug__, let's make sure it is true as
+ # we expect
+ assert __debug__
+ # Check that executed code has __debug__
+ self.check_coverage("""\
+ assert __debug__, "assert __debug__"
+ """
+ )
+ # Check that if it didn't have debug, it would let us know.
+ with pytest.raises(AssertionError):
+ self.check_coverage("""\
+ assert not __debug__, "assert not __debug__"
+ """
+ )
+
def test_if_debug(self):
- if not env.PYBEHAVIOR.optimize_if_debug:
- self.skipTest("PyPy doesn't optimize away 'if __debug__:'")
- # CPython optimizes away "if __debug__:"
+ if env.PYBEHAVIOR.optimize_if_debug:
+ arcz = ".1 12 24 41 26 61 1."
+ arcz_missing = ""
+ else:
+ arcz = ".1 12 23 31 34 41 26 61 1."
+ arcz_missing = "31"
self.check_coverage("""\
for value in [True, False]:
if value:
@@ -1188,14 +1274,13 @@ class OptimizedIfTest(CoverageTest):
else:
x = 6
""",
- arcz=".1 12 24 41 26 61 1.",
+ arcz=arcz,
+ arcz_missing=arcz_missing,
)
+ @xfail(env.PYBEHAVIOR.pep626, reason="https://bugs.python.org/issue42803")
def test_if_not_debug(self):
- # Before 3.7, no Python optimized away "if not __debug__:"
- if not env.PYBEHAVIOR.optimize_if_debug:
- self.skipTest("PyPy doesn't optimize away 'if __debug__:'")
- elif env.PYBEHAVIOR.optimize_if_not_debug2:
+ if env.PYBEHAVIOR.optimize_if_not_debug2:
arcz = ".1 12 24 41 26 61 1."
arcz_missing = ""
elif env.PYBEHAVIOR.optimize_if_not_debug:
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