Support special version

Author: v.shepard

testgres/utils.py

@@ -11,7 +11,8 @@
 import tempfile
 
 from contextlib import contextmanager
-from packaging.version import Version
+from packaging.version import Version, InvalidVersion
+import re
 try:
     from shutil import which as find_executable
 except ImportError:
@@ -27,8 +28,15 @@
 # ports used by nodes
 bound_ports = set()
 
+
 # re-export version type
-PgVer = Version
+class PgVer(Version):
+    def __init__(self, version: str) -> None:
+        try:
+            super().__init__(version)
+        except InvalidVersion:
+            version = re.sub(r"[a-zA-Z]+", "", version)
+            super().__init__(version)
 
 
 def reserve_port():

tests/test_simple.py

@@ -901,13 +901,17 @@ def test_version_management(self):
         d = PgVer('15.0')
         e = PgVer('15rc1')
         f = PgVer('15beta4')
+        h = PgVer('15.3biha')
+        i = PgVer('15.3')
 
         self.assertTrue(a == b)
         self.assertTrue(b > c)
         self.assertTrue(a > c)
         self.assertTrue(d > e)
         self.assertTrue(e > f)
         self.assertTrue(d > f)
+        self.assertTrue(h > f)
+        self.assertTrue(h == i)
 
         version = get_pg_version()
         with get_new_node() as node: