tests/: add a basic unit test

setup.py

@@ -27,7 +27,7 @@
     ],
     setup_requires=["setuptools_scm"],
     use_scm_version=True,
-    packages=find_packages(),
+    packages=find_packages(exclude=["tests"]),
     zip_safe=True,
     install_requires=["aiohttp"],
 )

tests/test_filter.py

@@ -0,0 +1,20 @@
+import unittest
+from postgrest.filters import Filter
+
+class TestFilters(unittest.TestCase):
+    def assertEncoding(self, value, expected, top_level=False):
+        self.assertEqual(Filter(value).prepare_query(top_level), expected)
+
+    def test_encoding(self):
+        self.assertEncoding(None, "null")
+        self.assertEncoding(False, "false")
+        self.assertEncoding(True, "true")
+        self.assertEncoding("foo", "foo", True)
+        self.assertEncoding("foo", "%22foo%22")
+        self.assertEncoding('with"double quote', 'with%22double%20quote', True)
+        self.assertEncoding('with"double quote', '%22with%5C%22double%20quote%22')
+        self.assertEncoding('double quote at end"', 'double%20quote%20at%20end%22', True)
+        self.assertEncoding('double quote at end"', '%22double%20quote%20at%20end%5C%22%22')
+
+if __name__ == '__main__':
+    unittest.main()