General: Add initial test.

pywal/util.py

@@ -8,7 +8,9 @@ import subprocess
 
 def read_file(input_file):
     """Read colors from a file."""
-    return open(input_file).read().splitlines()
+    with open(input_file) as file:
+        colors = file.read().splitlines()
+    return colors
 
 
 def save_file(colors, export_file):

tests/__init__.py

@@ -0,0 +1,4 @@
+"""
+wal - Generate and change colorschemes on the fly.
+Created by Dylan Araps.
+"""

tests/test_file

@@ -0,0 +1,16 @@
+#363442
+#99A3B1
+#C5BDB6
+#98AEC2
+#A8B9C6
+#96C4CF
+#B7C5CC
+#C9CFD0
+#999999
+#99A3B1
+#C5BDB6
+#98AEC2
+#A8B9C6
+#96C4CF
+#B7C5CC
+#C9CFD0

tests/test_util.py

@@ -0,0 +1,54 @@
+"""Test util functions."""
+import unittest
+import pathlib
+from pywal import util
+
+
+class TestUtil(unittest.TestCase):
+    """Test the util functions."""
+
+    def test_read_file_start(self):
+        """Test read_file()."""
+        result = util.read_file("tests/test_file")
+        self.assertEqual(result[0], "#363442")
+
+    def test_read_file_end(self):
+        """Test read_file()."""
+        result = util.read_file("tests/test_file")
+        self.assertEqual(result[15], "#C9CFD0")
+
+    def test_save_file(self):
+        """Test save_file()."""
+        tmp_file = pathlib.Path("/tmp/test_file")
+        util.save_file("Hello, world", tmp_file)
+        result = tmp_file.is_file()
+        self.assertTrue(result)
+
+    def test_create_dir(self):
+        """Test create_dir()."""
+        tmp_dir = pathlib.Path("/tmp/test_dir")
+        util.create_dir(tmp_dir)
+        result = tmp_dir.is_dir()
+        self.assertTrue(result)
+
+    def test_hex_to_rgb_black(self):
+        """Test hex_to_rgb() on #000000."""
+        result = util.hex_to_rgb("#000000")
+        self.assertEqual(result, "0,0,0")
+
+    def test_hex_to_rgb_white(self):
+        """Test hex_to_rgb() on #FFFFFF."""
+        result = util.hex_to_rgb("#FFFFFF")
+        self.assertEqual(result, "255,255,255")
+
+    def test_hex_to_rgb_rand(self):
+        """Test hex_to_rgb() on #98AEC2."""
+        result = util.hex_to_rgb("#98AEC2")
+        self.assertEqual(result, "152,174,194")
+
+    # Figure out how to test this.
+    # def test_disown(self):
+
+
+if __name__ == "__main__":
+    unittest.main()