1 files changed, 169 insertions, 0 deletions
diff --git a/tests/test_files.py b/tests/test_files.py
new file mode 100644
index 0000000..051b274
--- /dev/null
+++ b/tests/test_files.py
@@ -0,0 +1,169 @@
+"""Tests for files.py"""
+
+import os
+
+from coverage.files import FileLocator, TreeMatcher, FnmatchMatcher
+from coverage.files import PathAliases, find_python_files, abs_file
+from coverage.backward import set                   # pylint: disable=W0622
+from coverage.misc import CoverageException
+
+from test.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 acheive.
+        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 test_tree_matcher(self):
+        file1 = self.make_file("sub/file1.py")
+        file2 = self.make_file("sub/file2.c")
+        file3 = self.make_file("sub2/file3.h")
+        file4 = self.make_file("sub3/file4.py")
+        file5 = self.make_file("sub3/file5.c")
+        fl = FileLocator()
+        tm = TreeMatcher([
+            fl.canonical_filename("sub"),
+            fl.canonical_filename(file4),
+            ])
+        self.assertTrue(tm.match(fl.canonical_filename(file1)))
+        self.assertTrue(tm.match(fl.canonical_filename(file2)))
+        self.assertFalse(tm.match(fl.canonical_filename(file3)))
+        self.assertTrue(tm.match(fl.canonical_filename(file4)))
+        self.assertFalse(tm.match(fl.canonical_filename(file5)))
+
+    def test_fnmatch_matcher(self):
+        file1 = self.make_file("sub/file1.py")
+        file2 = self.make_file("sub/file2.c")
+        file3 = self.make_file("sub2/file3.h")
+        file4 = self.make_file("sub3/file4.py")
+        file5 = self.make_file("sub3/file5.c")
+        fl = FileLocator()
+        fnm = FnmatchMatcher(["*.py", "*/sub2/*"])
+        self.assertTrue(fnm.match(fl.canonical_filename(file1)))
+        self.assertFalse(fnm.match(fl.canonical_filename(file2)))
+        self.assertTrue(fnm.match(fl.canonical_filename(file3)))
+        self.assertTrue(fnm.match(fl.canonical_filename(file4)))
+        self.assertFalse(fnm.match(fl.canonical_filename(file5)))
+
+
+class PathAliasesTest(CoverageTest):
+    """Tests for coverage/files.py:PathAliases"""
+
+    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()
+        self.assertRaisesRegexp(
+            CoverageException, "Pattern must not end with wildcards.",
+            aliases.add, "/ned/home/*", "fooey"
+            )
+        self.assertRaisesRegexp(
+            CoverageException, "Pattern must not end with wildcards.",
+            aliases.add, "/ned/home/*/", "fooey"
+            )
+        self.assertRaisesRegexp(
+            CoverageException, "Pattern must not end with wildcards.",
+            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')
+
+
+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
+        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",
+            ])