move tests to plugin folder

gzip_cache/test_gzip_cache.py

@@ -0,0 +1,54 @@
+# -*- coding: utf-8 -*-
+'''Core plugins unit tests'''
+
+import os
+import tempfile
+import unittest
+
+from contextlib import contextmanager
+from tempfile import mkdtemp
+from shutil import rmtree
+
+import gzip_cache
+
+@contextmanager
+def temporary_folder():
+    """creates a temporary folder, return it and delete it afterwards.
+
+    This allows to do something like this in tests:
+
+        >>> with temporary_folder() as d:
+            # do whatever you want
+    """
+    tempdir = mkdtemp()
+    try:
+        yield tempdir
+    finally:
+        rmtree(tempdir)
+
+
+class TestGzipCache(unittest.TestCase):
+
+    def test_should_compress(self):
+        # Some filetypes should compress and others shouldn't.
+        self.assertTrue(gzip_cache.should_compress('foo.html'))
+        self.assertTrue(gzip_cache.should_compress('bar.css'))
+        self.assertTrue(gzip_cache.should_compress('baz.js'))
+        self.assertTrue(gzip_cache.should_compress('foo.txt'))
+
+        self.assertFalse(gzip_cache.should_compress('foo.gz'))
+        self.assertFalse(gzip_cache.should_compress('bar.png'))
+        self.assertFalse(gzip_cache.should_compress('baz.mp3'))
+        self.assertFalse(gzip_cache.should_compress('foo.mov'))
+
+    def test_creates_gzip_file(self):
+        # A file matching the input filename with a .gz extension is created.
+
+        # The plugin walks over the output content after the finalized signal
+        # so it is safe to assume that the file exists (otherwise walk would
+        # not report it). Therefore, create a dummy file to use.
+        with temporary_folder() as tempdir:
+            _, a_html_filename = tempfile.mkstemp(suffix='.html', dir=tempdir)
+            gzip_cache.create_gzip_file(a_html_filename)
+            self.assertTrue(os.path.exists(a_html_filename + '.gz'))
+