Add unit tests for parser

CHANGELOG.md

@@ -2,6 +2,12 @@
 
 All notable changes to this project will be documented in this file
 
+## Unreleased
+
+### Added
+
+- Unit tests in the `tests` folder
+
 ## 0.3.2 - 2021-04-24
 
 ### Added

setup.cfg

@@ -37,3 +37,6 @@ packages = find:
 [options.entry_points]
 console_scripts =
     yaclog = yaclog.cli.__main__:cli
+
+[options.packages.find]
+exclude = tests.*

tests/Test-Changelog.md

@@ -0,0 +1,64 @@
+# Changelog
+
+This changelog is for testing the parser, and has many things in it that might trip it up.
+
+## [Unreleased]
+
+- bullet point with no section
+
+### Added
+
+- bullet point dash
+* bullet point star
++ bullet point plus
+  - sub point 1
+  - sub point 2
+  - sub point 3
+
+### Fixed ##
+
+- this is a bullet point
+  it spans many lines
+
+This is
+a paragraph
+it spans many lines
+
+this line has an [id] link
+
+#### This is an H4
+
+##### This is an H5
+
+###### This is an H6
+
+```markdown
+this is some example code
+it spans many lines
+```
+
+> this is a block quote
+it spans many lines
+
+[1.1.0] - 1969-07-20 [PRERELEASE]
+---
+
+### Fixed
+
+- Nyan Cat now has correct music
+
+### Added
+
+- Multiplayer
+
+## Not a version number
+
+### Removed
+
+- Herobrine
+
+[unreleased]: http://beesbeesbees.com
+
+[1.1.0]: http://endless.horse
+
+[id]: http://www.koalastothemax.com

tests/test_changelog.py

@@ -0,0 +1,62 @@
+import unittest
+import yaclog
+import os.path
+import datetime
+
+test_dir = os.path.dirname(os.path.realpath(__file__))
+
+
+class TestParser(unittest.TestCase):
+    def setUp(self):
+        self.log = yaclog.read(os.path.join(test_dir, 'Test-Changelog.md'))
+
+    def test_header(self):
+        self.assertEqual(self.log.header,
+                         '# Changelog\n\n'
+                         'This changelog is for testing the parser, and has many things in it that might trip it up.')
+
+    def test_path(self):
+        self.assertEqual(self.log.path, os.path.join(test_dir, 'Test-Changelog.md'))
+
+    def test_links(self):
+        self.assertEqual(self.log.links, {'unreleased': 'http://beesbeesbees.com',
+                                          '1.1.0': 'http://endless.horse',
+                                          'id': 'http://www.koalastothemax.com'})
+
+    def test_versions(self):
+        v = self.log.versions
+        self.assertEqual(v[0].name, 'Unreleased')
+        self.assertEqual(v[0].link, 'http://beesbeesbees.com')
+        self.assertEqual(v[0].date, None)
+        self.assertEqual(v[0].tags, [])
+
+        self.assertEqual(v[1].name, '1.1.0')
+        self.assertEqual(v[1].link, 'http://endless.horse')
+        self.assertEqual(v[1].date, datetime.date.fromisoformat('1969-07-20'))
+        self.assertEqual(v[1].tags, ['PRERELEASE'])
+
+        self.assertEqual(v[2].name, 'Not a version number')
+        self.assertEqual(v[2].link, None)
+        self.assertEqual(v[2].date, None)
+        self.assertEqual(v[2].tags, [])
+
+    def test_unreleased(self):
+        v = self.log.versions[0]
+
+        self.assertEqual(v.sections[''], ['- bullet point with no section'])
+        self.assertEqual(v.sections['Added'],
+                         ['- bullet point dash', '* bullet point star',
+                          '+ bullet point plus\n  - sub point 1\n  - sub point 2\n  - sub point 3'])
+        self.assertEqual(v.sections['Fixed'],
+                         ['- this is a bullet point\n  it spans many lines',
+                          'This is\na paragraph\nit spans many lines',
+                          'this line has an [id] link',
+                          '#### This is an H4',
+                          '##### This is an H5',
+                          '###### This is an H6',
+                          '```markdown\nthis is some example code\nit spans many lines\n```',
+                          '> this is a block quote\nit spans many lines'])
+
+
+if __name__ == '__main__':
+    unittest.main()

yaclog/changelog.py

@@ -66,8 +66,8 @@ class VersionEntry:
         self.name: str = 'Unreleased'
         self.date: Optional[datetime.date] = None
         self.tags: List[str] = []
-        self.link: str = ''
-        self.link_id: str = ''
+        self.link: Optional[str] = None
+        self.link_id: Optional[str] = None
         self.line_no: int = -1
 
     def body(self, md: bool = True) -> str:
@@ -203,7 +203,7 @@ class Changelog:
                 version.name = slug
                 version.line_no = segment[0]
                 tags = []
-                date = []
+                date = None
 
                 for word in split[1:]:
                     if match := re.match(r'\d{4}-\d{2}-\d{2}', word):
@@ -246,13 +246,13 @@ class Changelog:
                 # ref-matched link
                 link_id = match[1].lower()
                 if link_id in self.links:
-                    version.link = self.links.pop(link_id)
+                    version.link = self.links[link_id]
                     version.link_id = None
                     version.name = match[1]
 
             elif version.link_id in self.links:
                 # id-matched link
-                version.link = self.links.pop(version.link_id)
+                version.link = self.links[version.link_id]
 
         # strip whitespace from header
         self.header = _join_markdown(header_segments)
@@ -261,10 +261,8 @@ class Changelog:
         if path is None:
             path = self.path
 
-        v_links = {}
-        v_links.update(self.links)
-
         segments = [self.header]
+        v_links = {**self.links}
 
         for version in self.versions:
             if version.link:
@@ -272,8 +270,7 @@ class Changelog:
 
             segments.append(version.text())
 
-        for link_id, link in v_links.items():
-            segments.append(f'[{link_id.lower()}]: {link}')
+        segments += [f'[{link_id.lower()}]: {link}' for link_id, link in v_links.items()]
 
         text = _join_markdown(segments)