tests/test_embeddedfiles.py: added test_4050().

Author: julian-smith-artifex-com

tests/test_embeddedfiles.py

@@ -21,4 +21,23 @@ def test_embedded1():
     assert doc.embfile_info(0)["filename"] == "new-filename.txt"
     assert doc.embfile_get(0) == buffer
     doc.embfile_del(0)
-    assert doc.embfile_count() == 0
+    assert doc.embfile_count() == 0
+
+def test_4050():
+    with pymupdf.open() as document:
+        document.embfile_add('test', b'foobar', desc='some text')
+        d = document.embfile_info('test')
+        print(f'{d=}')
+        # Date is non-trivial to test for.
+        del d['creationDate']
+        del d['modDate']
+        assert d == {
+                'name': 'test',
+                'collection': 0,
+                'filename': 'test',
+                'ufilename': 'test',
+                'description': 'some text',
+                'size': 6,
+                'length': 6,
+                }
+