Fix warnings.

Change tuple -> Tuple
Fix Diff initialization
Add sorting to AttachedText

Signed-off-by: Rodney Richardson <rodney.richardson@cambridgeconsultants.com>

cyclonedx/model/__init__.py

@@ -21,7 +21,7 @@
 import warnings
 from datetime import datetime
 from enum import Enum
-from typing import Any, Iterable, Optional
+from typing import Any, Iterable, Optional, Tuple, TypeVar
 
 from sortedcontainers import SortedSet
 
@@ -59,7 +59,10 @@ def sha1sum(filename: str) -> str:
     return h.hexdigest()
 
 
-class ComparableTuple(tuple):
+_T = TypeVar('_T')
+
+
+class ComparableTuple(Tuple[_T, ...]):
     """
     Allows comparison of tuples, allowing for None values.
     """
@@ -244,6 +247,12 @@ def __eq__(self, other: object) -> bool:
             return hash(other) == hash(self)
         return False
 
+    def __lt__(self, other: Any) -> bool:
+        if isinstance(other, AttachedText):
+            return ComparableTuple((self.content_type, self.content, self.encoding)) < \
+                ComparableTuple((other.content_type, other.content, other.encoding))
+        return NotImplemented
+
     def __hash__(self) -> int:
         return hash((self.content, self.content_type, self.encoding))
 

tests/test_model_component.py

@@ -37,6 +37,7 @@
 from cyclonedx.model import (
     AttachedText,
     Copyright,
+    Encoding,
     ExternalReference,
     ExternalReferenceType,
     IdentifiableAction,
@@ -364,21 +365,41 @@ def test_not_same(self) -> None:
         self.assertFalse(diff_1 == diff_2)
 
     def test_sort(self) -> None:
+        text_a = AttachedText(content='a')
+        text_b = AttachedText(content='b')
+
         # expected sort order: ([url], [text])
         expected_order = [1, 0, 5, 2, 3, 4]
         diffs = [
-            Diff(url=XsUri('a'), text='b'),
-            Diff(url=XsUri('a'), text='a'),
-            Diff(url=XsUri('b'), text='a'),
-            Diff(text='a'),
-            Diff(text='b'),
+            Diff(url=XsUri('a'), text=text_b),
+            Diff(url=XsUri('a'), text=text_a),
+            Diff(url=XsUri('b'), text=text_a),
+            Diff(text=text_a),
+            Diff(text=text_b),
             Diff(url=XsUri('a')),
         ]
         sorted_diffs = sorted(diffs)
         expected_diffs = reorder(diffs, expected_order)
         self.assertListEqual(sorted_diffs, expected_diffs)
 
 
+class TestModelAttachedText(TestCase):
+
+    def test_sort(self) -> None:
+        # expected sort order: (content_type, content, encoding)
+        expected_order = [0, 4, 2, 1, 3]
+        text = [
+            AttachedText(content='a', content_type='a', encoding=Encoding.BASE_64),
+            AttachedText(content='a', content_type='b', encoding=Encoding.BASE_64),
+            AttachedText(content='b', content_type='a', encoding=Encoding.BASE_64),
+            AttachedText(content='b', content_type='b', encoding=Encoding.BASE_64),
+            AttachedText(content='a', content_type='a'),
+        ]
+        sorted_text = sorted(text)
+        expected_text = reorder(text, expected_order)
+        self.assertListEqual(sorted_text, expected_text)
+
+
 class TestModelPatch(TestCase):
 
     def test_same_1(self) -> None:
@@ -425,8 +446,8 @@ def test_not_same_1(self) -> None:
         self.assertFalse(p1 == p2)
 
     def test_sort(self) -> None:
-        diff_a = Diff(text='a')
-        diff_b = Diff(text='b')
+        diff_a = Diff(text=AttachedText(content='a'))
+        diff_b = Diff(text=AttachedText(content='b'))
 
         resolves_a = [
             IssueType(classification=IssueClassification.DEFECT),