[test] Add a smoke test for all known file types

Try to read an empty file and check that the right kind of
exception is raised.

This commit constitutes release 1.7.0.

Author: toaarnio

imsize/version.py

@@ -1 +1 @@
-__version__ = "1.6.4"
+__version__ = "1.7.0"

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "imsize"
-version = "1.6.4"
+version = "1.7.0"
 description="Lightning-fast extraction of basic image metadata"
 authors = [{name = "Tomi Aarnio", email = "[email protected]"}]
 readme = "README.md"

test/test_read.py

@@ -2,6 +2,7 @@
 import os
 import glob
 import unittest
+import tempfile
 import imsize
 
 
@@ -146,6 +147,12 @@ def test_orientations(self):
                 self.assertEqual(info.nbytes, 600 * 450 * 3)
                 self.assertEqual(info.orientation, (i % 8) + 1)
 
+    def test_empty_files(self):
+        for ext in imsize.FILETYPES:
+            with tempfile.NamedTemporaryFile(suffix=ext) as fp:
+                with self.assertRaises(imsize.ImageFileError):
+                    info = imsize.read(fp.name)
+
 
 if __name__ == "__main__":
     unittest.main()