Add formatting unit test for plist

Author: ESultanik

test/test_formatting.py

@@ -1,5 +1,6 @@
 import csv
 import json
+import plistlib
 import random
 from functools import partial, wraps
 from io import StringIO
@@ -44,8 +45,10 @@ def wrapper(self: 'TestFormatting'):
         formatter = filetype.get_default_formatter()
 
         for _ in trange(iterations):
-            orig_obj, str_representation = test_func(self)
-            with graphtage.utils.Tempfile(str_representation.encode('utf-8')) as t:
+            orig_obj, representation = test_func(self)
+            if isinstance(representation, str):
+                representation = representation.encode("utf-8")
+            with graphtage.utils.Tempfile(representation) as t:
                 tree = filetype.build_tree(t)
                 stream = StringIO()
                 printer = graphtage.printer.Printer(out_stream=stream, ansi_color=False)
@@ -58,7 +61,7 @@ def wrapper(self: 'TestFormatting'):
                     self.fail(f"""{filetype_name.upper()} decode error {e}: Original object:
 {orig_obj!r}
 Expected format:
-{str_representation!s}
+{representation.decode("utf-8")}
 Actual format:
 {formatted_str!s}""")
             if test_equality:
@@ -245,3 +248,8 @@ def test_yaml_formatting(self):
         s = StringIO()
         yaml.dump(orig_obj, s, Dumper=graphtage.yaml.Dumper)
         return orig_obj, s.getvalue()
+
+    @filetype_test(test_equality=False)
+    def test_plist_formatting(self):
+        orig_obj = TestFormatting.make_random_obj(force_string_keys=True, exclude_bytes=frozenset('<>/\n&?|@{}[]'))
+        return orig_obj, plistlib.dumps(orig_obj)