refactor(bump_rule): get rid of a simple function

commitizen/bump_rule.py

@@ -70,18 +70,15 @@ def get_highest_by_messages(
             >>> VersionIncrement.get_highest_by_messages(commit_messages, lambda x: rule.extract_increment(x, False))
             'MINOR'
         """
-        return VersionIncrement.get_highest(
-            extract_increment(line)
-            for message in commit_messages
-            for line in message.split("\n")
+        return max(
+            (
+                extract_increment(line)
+                for message in commit_messages
+                for line in message.split("\n")
+            ),
+            default=VersionIncrement.NONE,
         )
 
-    @staticmethod
-    def get_highest(
-        increments: Iterable[VersionIncrement],
-    ) -> VersionIncrement:
-        return max(increments, default=VersionIncrement.NONE)
-
 
 class BumpRule(Protocol):
     """A protocol defining the interface for version bump rules.
@@ -234,13 +231,16 @@ def extract_increment(
         )
 
         try:
-            if ret := VersionIncrement.get_highest(
-                (
-                    increment
-                    for name, increment in effective_bump_map.items()
-                    if m.group(name)
-                ),
-            ):
+            if (
+                ret := max(
+                    (
+                        increment
+                        for name, increment in effective_bump_map.items()
+                        if m.group(name)
+                    ),
+                    default=VersionIncrement.NONE,
+                )
+            ) is not VersionIncrement.NONE:
                 return ret
         except IndexError:
             pass

tests/test_bump_rule.py

@@ -635,61 +635,6 @@ def test_with_find_increment_by_callable(self, custom_bump_rule):
         )
 
 
-class TestGetHighest:
-    def test_get_highest_with_major(self):
-        increments = [
-            VersionIncrement.PATCH,
-            VersionIncrement.MINOR,
-            VersionIncrement.MAJOR,
-        ]
-        assert VersionIncrement.get_highest(increments) == VersionIncrement.MAJOR
-
-    def test_get_highest_with_minor(self):
-        increments = [
-            VersionIncrement.PATCH,
-            VersionIncrement.MINOR,
-            VersionIncrement.NONE,
-        ]
-        assert VersionIncrement.get_highest(increments) == VersionIncrement.MINOR
-
-    def test_get_highest_with_patch(self):
-        increments = [
-            VersionIncrement.PATCH,
-            VersionIncrement.NONE,
-            VersionIncrement.NONE,
-        ]
-        assert VersionIncrement.get_highest(increments) == VersionIncrement.PATCH
-
-    def test_get_highest_with_none(self):
-        increments = [
-            VersionIncrement.NONE,
-            VersionIncrement.NONE,
-            VersionIncrement.NONE,
-        ]
-        assert VersionIncrement.get_highest(increments) == VersionIncrement.NONE
-
-    def test_get_highest_empty(self):
-        increments = []
-        assert VersionIncrement.get_highest(increments) == VersionIncrement.NONE
-
-    def test_get_highest_mixed_order(self):
-        increments = [
-            VersionIncrement.MAJOR,
-            VersionIncrement.PATCH,
-            VersionIncrement.MINOR,
-        ]
-        assert VersionIncrement.get_highest(increments) == VersionIncrement.MAJOR
-
-    def test_get_highest_with_none_values(self):
-        increments = [
-            VersionIncrement.NONE,
-            VersionIncrement.MINOR,
-            VersionIncrement.NONE,
-            VersionIncrement.PATCH,
-        ]
-        assert VersionIncrement.get_highest(increments) == VersionIncrement.MINOR
-
-
 class TestSafeCast:
     def test_safe_cast_valid_strings(self):
         assert VersionIncrement.safe_cast("MAJOR") == VersionIncrement.MAJOR