Fix test_33_identifier.py to avoid reuse of old test data files

  - If for any reason the dbm.dumb is used for saving subject.db
    data the following tests can fail because subject.db.dat and
    subject.db.dir are not removed. To avoid this additional deletes
    of test data files are added to setup_class().
  - Add also tests/*.dir, tests/*.dat, tests/*.bak to .gitignore to
    prevent erroneous adding of test data to the repository
  - Use full_path() helper to create the test data files under tests/
  - Add py39 to tox.ini envlist

3 files changed, 38 insertions, 26 deletions

diff --git a/.gitignore b/.gitignore
index 7db203ec..534546d2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -7,6 +7,10 @@ example/*/modules/
 
 tests/*.log.*
 tests/*.db
+tests/*.dir
+tests/*.dat
+tests/*.bak
+
 
 eptid
 
@@ -117,6 +121,9 @@ venv.bak/
 # Visual Studio Code files
 .vscode/
 
+# PyCharm project files
+.idea/
+
 # mkdocs documentation
 /site
 
diff --git a/tests/test_33_identifier.py b/tests/test_33_identifier.py
index 86e2003d..6f11f7fe 100644
--- a/tests/test_33_identifier.py
+++ b/tests/test_33_identifier.py
@@ -7,34 +7,39 @@ from saml2.config import IdPConfig
 from saml2.ident import IdentDB
 from saml2.assertion import Policy
 
-def _eq(l1,l2):
+from pathutils import full_path
+
+
+def _eq(l1, l2):
     return set(l1) == set(l2)
 
+
 CONFIG = IdPConfig().load({
-    "entityid" :  "urn:mace:example.com:idp:2",
-    "name" : "test",
+    "entityid": "urn:mace:example.com:idp:2",
+    "name": "test",
     "service": {
         "idp": {
-            "endpoints" : {
-                "single_sign_on_service" : ["http://idp.example.org/"],
-                },
+            "endpoints": {
+                "single_sign_on_service": ["http://idp.example.org/"],
+            },
             "policy": {
                 "default": {
-                    "lifetime": {"minutes":15},
-                    "attribute_restrictions": None, # means all I have
-                    "name_form": "urn:oasis:names:tc:SAML:2.0:attrname-format:uri",
+                    "lifetime": {"minutes": 15},
+                    "attribute_restrictions": None,  # means all I have
+                    "name_form":
+                        "urn:oasis:names:tc:SAML:2.0:attrname-format:uri",
                     "nameid_format": NAMEID_FORMAT_PERSISTENT
                 }
             }
         }
     },
-    "virtual_organization" : {
-        "http://vo.example.org/biomed":{
-            "nameid_format" : "urn:oid:2.16.756.1.2.5.1.1.1-NameID",
+    "virtual_organization": {
+        "http://vo.example.org/biomed": {
+            "nameid_format": "urn:oid:2.16.756.1.2.5.1.1.1-NameID",
             "common_identifier": "uid",
         },
-        "http://vo.example.org/design":{
-            "nameid_format" : NAMEID_FORMAT_PERSISTENT,
+        "http://vo.example.org/design": {
+            "nameid_format": NAMEID_FORMAT_PERSISTENT,
             "common_identifier": "uid",
         }
     }
@@ -53,13 +58,14 @@ NAME_ID_POLICY_2 = """<?xml version="1.0" encoding="utf-8"?>
 """
 
 
-class TestIdentifier():
+class TestIdentifier:
     def setup_class(self):
-        try:
-            os.remove("subject.db.db")
-        except:
-            pass
-        self.id = IdentDB("subject.db", "example.com", "example")
+        for extension in ('.db', '.dir', '.dat', '.bak'):
+            try:
+                os.remove(full_path("subject.db{}".format(extension)))
+            except (OSError, IOError):
+                pass
+        self.id = IdentDB(full_path("subject.db"), "example.com", "example")
 
     def test_persistent_1(self):
         policy = Policy({
@@ -80,9 +86,9 @@ class TestIdentifier():
         assert nameid.sp_name_qualifier == "urn:mace:example.com:sp:1"
         assert nameid.format == NAMEID_FORMAT_PERSISTENT
 
-        id = self.id.find_local_id(nameid)
+        id_ = self.id.find_local_id(nameid)
 
-        assert id == "foobar"
+        assert id_ == "foobar"
 
     def test_persistent_2(self):
         userid = 'foobar'
@@ -161,7 +167,6 @@ class TestIdentifier():
         assert nameid.format == NAMEID_FORMAT_PERSISTENT
         assert nameid.text != "foobar01"
 
-
     def test_persistent_nameid(self):
         sp_id = "urn:mace:umu.se:sp"
         nameid = self.id.persistent_nameid("abcd0001", sp_id)
@@ -187,6 +192,5 @@ class TestIdentifier():
         assert nameid.text.strip() != nameid2.text.strip()
 
     def teardown_class(self):
-        if os.path.exists("subject.db"):
-            os.unlink("subject.db")
-
+        if os.path.exists(full_path("subject.db")):
+            os.unlink(full_path("subject.db"))
diff --git a/tox.ini b/tox.ini
index dd7152ac..32a5714a 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,6 +3,7 @@ envlist =
   py36
   py37
   py38
+  py39
   pypy3
 
 [testenv]