test: Propose tests for title parsing changes.

tests/14-titles.org

@@ -0,0 +1,12 @@
+#+TITLE: 14-Simple
+#+DESCRIPTION: Org file to evaluate titles
+#+TODO: TODO(t) PAUSED(p) |  DONE(d)
+
+
+* Simple title
+
+* Simple title with tags :tag:
+
+* Simple title with trailing space 
+
+*  Simple title with leading space

tests/test_org.py

@@ -955,6 +955,24 @@ class TestSerde(unittest.TestCase):
         h1_2_h2 = h1_2.children[0]
         self.assertEqual(sorted(h1_2_h2.tags), ["otherh2tag"])
 
+    def test_titles_file(self):
+        with open(os.path.join(DIR, "14-titles.org")) as f:
+            doc = load(f)
+
+        h1, h2, h3, h4 = doc.getTopHeadlines()
+        self.assertEqual(h1.title.get_text(), "Simple title")
+        self.assertEqual(h2.title.get_text(), "Simple title with tags")
+        self.assertEqual(h3.title.get_text(), "Simple title with trailing space")
+        self.assertEqual(h4.title.get_text(), "Simple title with leading space")
+
+    def test_mimic_write_file_14(self):
+        """A goal of this library is to be able to update a file without changing parts not directly modified."""
+        with open(os.path.join(DIR, "14-titles.org")) as f:
+            orig = f.read()
+            doc = loads(orig)
+
+        self.assertEqual(dumps(doc), orig)
+
     def test_update_headline_from_none_to_todo(self):
         orig = "* First entry"
         doc = loads(orig)