[PATCH 04/20] tests: Ensure proper functioning of GitIgnore

[Mathieu Bridon]

The tests fail!

That's because they just found 2 bugs in the code. :)
---
 test/test_gitgnore.py | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 test/test_gitgnore.py

diff --git a/test/test_gitgnore.py b/test/test_gitgnore.py
new file mode 100644
index 0000000..938abfd
--- /dev/null
+++ b/test/test_gitgnore.py
@@ -0,0 +1,83 @@
+import os
+import shutil
+import tempfile
+import unittest
+
+
+class GitIgnoreTestCase(unittest.TestCase):
+    def setUp(self):
+        self.workdir = tempfile.mkdtemp(prefix='rpkg-tests.')
+
+    def tearDown(self):
+        shutil.rmtree(self.workdir)
+
+    def test_match_empty(self):
+        import pyrpkg
+        gi = pyrpkg.GitIgnore(os.path.join(self.workdir, 'gitignore'))
+
+        self.assertFalse(gi.match('this does not exist'))
+
+        # The empty string could match an empty file, but we don't want it to
+        self.assertFalse(gi.match(''))
+
+    def test_match_line_from_existing_file(self):
+        gi_path = os.path.join(self.workdir, 'gitignore')
+
+        with open(gi_path, 'w') as f:
+            f.write('this line exists\n')
+
+        import pyrpkg
+        gi = pyrpkg.GitIgnore(gi_path)
+
+        self.assertTrue(gi.match('this line exists'))
+        self.assertTrue(gi.match('this line exists\n'))
+        self.assertTrue(gi.match('/this line exists'))
+        self.assertTrue(gi.match('/this line exists\n'))
+
+        self.assertFalse(gi.match('but this line does not'))
+
+    def test_match_unwritten_line(self):
+        import pyrpkg
+        gi = pyrpkg.GitIgnore(os.path.join(self.workdir, 'gitignore'))
+        gi.add('here is a new line')
+
+        self.assertTrue(gi.modified)
+        self.assertTrue(gi.match('here is a new line'))
+
+    def test_match_glob(self):
+        import pyrpkg
+        gi = pyrpkg.GitIgnore(os.path.join(self.workdir, 'gitignore'))
+        gi.add('*')
+
+        self.assertTrue(gi.match('Surely this is matched by a wildcard?'))
+
+    def test_write_new_file(self):
+        gi_path = os.path.join(self.workdir, 'gitignore')
+
+        import pyrpkg
+        gi = pyrpkg.GitIgnore(gi_path)
+        gi.add('here is a new line')
+        gi.write()
+
+        self.assertFalse(gi.modified)
+
+        with open(gi_path) as f:
+            self.assertEqual(f.read(), 'here is a new line\n')
+
+    def test_write_append_to_existing_file(self):
+        gi_path = os.path.join(self.workdir, 'gitignore')
+
+        lines = ('this line exists', 'here is a new line')
+
+        with open(gi_path, 'w') as f:
+            f.write(lines[0])
+
+        import pyrpkg
+        gi = pyrpkg.GitIgnore(gi_path)
+        gi.add(lines[1])
+        gi.write()
+
+        self.assertFalse(gi.modified)
+
+        with open(gi_path) as f:
+            self.assertEqual(f.read(), '%s\n' % '\n'.join(lines))
-- 
2.1.0