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"""Tests for files.py"""
import os
import os.path
from coverage.files import (
FileLocator, TreeMatcher, FnmatchMatcher, ModuleMatcher, PathAliases,
find_python_files, abs_file
)
from coverage.misc import CoverageException
from tests.coveragetest import CoverageTest
class FileLocatorTest(CoverageTest):
"""Tests of `FileLocator`."""
def abs_path(self, p):
"""Return the absolute path for `p`."""
return os.path.join(os.getcwd(), os.path.normpath(p))
def test_simple(self):
self.make_file("hello.py")
fl = FileLocator()
self.assertEqual(fl.relative_filename("hello.py"), "hello.py")
a = self.abs_path("hello.py")
self.assertNotEqual(a, "hello.py")
self.assertEqual(fl.relative_filename(a), "hello.py")
def test_peer_directories(self):
self.make_file("sub/proj1/file1.py")
self.make_file("sub/proj2/file2.py")
a1 = self.abs_path("sub/proj1/file1.py")
a2 = self.abs_path("sub/proj2/file2.py")
d = os.path.normpath("sub/proj1")
os.chdir(d)
fl = FileLocator()
self.assertEqual(fl.relative_filename(a1), "file1.py")
self.assertEqual(fl.relative_filename(a2), a2)
def test_filepath_contains_absolute_prefix_twice(self):
# https://bitbucket.org/ned/coveragepy/issue/194
# Build a path that has two pieces matching the absolute path prefix.
# Technically, this test doesn't do that on Windows, but drive
# letters make that impractical to achieve.
fl = FileLocator()
d = abs_file(os.curdir)
trick = os.path.splitdrive(d)[1].lstrip(os.path.sep)
rel = os.path.join('sub', trick, 'file1.py')
self.assertEqual(fl.relative_filename(abs_file(rel)), rel)
class MatcherTest(CoverageTest):
"""Tests of file matchers."""
def setUp(self):
super(MatcherTest, self).setUp()
self.fl = FileLocator()
def assertMatches(self, matcher, filepath, matches):
"""The `matcher` should agree with `matches` about `filepath`."""
canonical = self.fl.canonical_filename(filepath)
self.assertEqual(
matcher.match(canonical), matches,
"File %s should have matched as %s" % (filepath, matches)
)
def test_tree_matcher(self):
matches_to_try = [
(self.make_file("sub/file1.py"), True),
(self.make_file("sub/file2.c"), True),
(self.make_file("sub2/file3.h"), False),
(self.make_file("sub3/file4.py"), True),
(self.make_file("sub3/file5.c"), False),
]
fl = FileLocator()
trees = [
fl.canonical_filename("sub"),
fl.canonical_filename("sub3/file4.py"),
]
tm = TreeMatcher(trees)
self.assertEqual(tm.info(), trees)
for filepath, matches in matches_to_try:
self.assertMatches(tm, filepath, matches)
def test_module_matcher(self):
matches_to_try = [
('test', True),
('trash', False),
('testing', False),
('test.x', True),
('test.x.y.z', True),
('py', False),
('py.t', False),
('py.test', True),
('py.testing', False),
('py.test.buz', True),
('py.test.buz.baz', True),
('__main__', False),
('mymain', True),
('yourmain', False),
]
modules = ['test', 'py.test', 'mymain']
mm = ModuleMatcher(modules)
self.assertEqual(
mm.info(),
modules
)
for modulename, matches in matches_to_try:
self.assertEqual(
mm.match(modulename),
matches,
modulename,
)
def test_fnmatch_matcher(self):
matches_to_try = [
(self.make_file("sub/file1.py"), True),
(self.make_file("sub/file2.c"), False),
(self.make_file("sub2/file3.h"), True),
(self.make_file("sub3/file4.py"), True),
(self.make_file("sub3/file5.c"), False),
]
fnm = FnmatchMatcher(["*.py", "*/sub2/*"])
self.assertEqual(fnm.info(), ["*.py", "*/sub2/*"])
for filepath, matches in matches_to_try:
self.assertMatches(fnm, filepath, matches)
def test_fnmatch_matcher_overload(self):
fnm = FnmatchMatcher(["*x%03d*.txt" % i for i in range(500)])
self.assertMatches(fnm, "x007foo.txt", True)
self.assertMatches(fnm, "x123foo.txt", True)
self.assertMatches(fnm, "x798bar.txt", False)
def test_fnmatch_windows_paths(self):
# We should be able to match Windows paths even if we are running on
# a non-Windows OS.
fnm = FnmatchMatcher(["*/foo.py"])
self.assertMatches(fnm, r"dir\foo.py", True)
fnm = FnmatchMatcher([r"*\foo.py"])
self.assertMatches(fnm, r"dir\foo.py", True)
class PathAliasesTest(CoverageTest):
"""Tests for coverage/files.py:PathAliases"""
run_in_temp_dir = False
def test_noop(self):
aliases = PathAliases()
self.assertEqual(aliases.map('/ned/home/a.py'), '/ned/home/a.py')
def test_nomatch(self):
aliases = PathAliases()
aliases.add('/home/*/src', './mysrc')
self.assertEqual(aliases.map('/home/foo/a.py'), '/home/foo/a.py')
def test_wildcard(self):
aliases = PathAliases()
aliases.add('/ned/home/*/src', './mysrc')
self.assertEqual(aliases.map('/ned/home/foo/src/a.py'), './mysrc/a.py')
aliases = PathAliases()
aliases.add('/ned/home/*/src/', './mysrc')
self.assertEqual(aliases.map('/ned/home/foo/src/a.py'), './mysrc/a.py')
def test_no_accidental_match(self):
aliases = PathAliases()
aliases.add('/home/*/src', './mysrc')
self.assertEqual(aliases.map('/home/foo/srcetc'), '/home/foo/srcetc')
def test_multiple_patterns(self):
aliases = PathAliases()
aliases.add('/home/*/src', './mysrc')
aliases.add('/lib/*/libsrc', './mylib')
self.assertEqual(aliases.map('/home/foo/src/a.py'), './mysrc/a.py')
self.assertEqual(aliases.map('/lib/foo/libsrc/a.py'), './mylib/a.py')
def test_cant_have_wildcard_at_end(self):
aliases = PathAliases()
msg = "Pattern must not end with wildcards."
with self.assertRaisesRegex(CoverageException, msg):
aliases.add("/ned/home/*", "fooey")
with self.assertRaisesRegex(CoverageException, msg):
aliases.add("/ned/home/*/", "fooey")
with self.assertRaisesRegex(CoverageException, msg):
aliases.add("/ned/home/*/*/", "fooey")
def test_no_accidental_munging(self):
aliases = PathAliases()
aliases.add(r'c:\Zoo\boo', 'src/')
aliases.add('/home/ned$', 'src/')
self.assertEqual(aliases.map(r'c:\Zoo\boo\foo.py'), 'src/foo.py')
self.assertEqual(aliases.map(r'/home/ned$/foo.py'), 'src/foo.py')
def test_paths_are_os_corrected(self):
aliases = PathAliases()
aliases.add('/home/ned/*/src', './mysrc')
aliases.add(r'c:\ned\src', './mysrc')
mapped = aliases.map(r'C:\Ned\src\sub\a.py')
self.assertEqual(mapped, './mysrc/sub/a.py')
aliases = PathAliases()
aliases.add('/home/ned/*/src', r'.\mysrc')
aliases.add(r'c:\ned\src', r'.\mysrc')
mapped = aliases.map(r'/home/ned/foo/src/sub/a.py')
self.assertEqual(mapped, r'.\mysrc\sub\a.py')
def test_leading_wildcard(self):
aliases = PathAliases()
aliases.add('*/d1', './mysrc1')
aliases.add('*/d2', './mysrc2')
self.assertEqual(aliases.map('/foo/bar/d1/x.py'), './mysrc1/x.py')
self.assertEqual(aliases.map('/foo/bar/d2/y.py'), './mysrc2/y.py')
class RelativePathAliasesTest(CoverageTest):
"""Tests for coverage/files.py:PathAliases, with relative files."""
run_in_temp_dir = False
def test_dot(self):
for d in ('.', '..', '../other', '~'):
aliases = PathAliases()
aliases.add(d, '/the/source')
the_file = os.path.join(d, 'a.py')
the_file = os.path.expanduser(the_file)
the_file = os.path.abspath(os.path.realpath(the_file))
assert '~' not in the_file # to be sure the test is pure.
self.assertEqual(aliases.map(the_file), '/the/source/a.py')
class FindPythonFilesTest(CoverageTest):
"""Tests of `find_python_files`."""
def test_find_python_files(self):
self.make_file("sub/a.py")
self.make_file("sub/b.py")
self.make_file("sub/x.c") # nope: not .py
self.make_file("sub/ssub/__init__.py")
self.make_file("sub/ssub/s.py")
self.make_file("sub/ssub/~s.py") # nope: editor effluvia
self.make_file("sub/lab/exp.py") # nope: no __init__.py
self.make_file("sub/windows.pyw")
py_files = set(find_python_files("sub"))
self.assert_same_files(py_files, [
"sub/a.py", "sub/b.py",
"sub/ssub/__init__.py", "sub/ssub/s.py",
"sub/windows.pyw",
])
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