tests: Create identities fixture to use in message

Since the identities are not being tested in the message tests,
facilitate to create them.

tests/conftest.py

@@ -1,6 +1,9 @@
 """pytest configuration for the unit tests."""
+import os
 import pytest
 
+from . import constants
+
 
 @pytest.fixture()
 def datadir(request):
@@ -43,3 +46,30 @@ def alice_sec_key_data(datadir):
 def bob_pub_key_data(datadir):
     key_data = datadir.read('bob@openpgp.example.pub.asc')
     return key_data
+
+
+@pytest.fixture()
+def create_alice_identity(tmpdir, alice_sec_key_data, bob_pub_key_data):
+    os.environ["HOME"] = str(tmpdir)
+    import pEp
+
+    pEp.import_key(alice_sec_key_data)
+    alice = pEp.Identity(
+        constants.ALICE_ADDRESS, constants.ALICE_NAME,
+        constants.ALICE_NAME_ADDR, constants.ALICE_FP, 0, ''
+        )
+    pEp.set_own_key(alice, constants.ALICE_FP)
+    return alice
+
+
+@pytest.fixture()
+def create_bob_identity(tmpdir, bob_pub_key_data):
+    os.environ["HOME"] = str(tmpdir)
+    import pEp
+
+    pEp.import_key(bob_pub_key_data)
+    bob = pEp.Identity(
+        constants.BOB_ADDRESS, constants.BOB_NAME, '',
+        constants.BOB_FP, 56, ''
+        )
+    return bob

tests/test_message.py

@@ -1,23 +1,13 @@
 """Message unit tests."""
-import os
 
 from . import constants
 
 
-def test_msg_enc_dec_roundtrip(tmpdir, alice_sec_key_data, bob_pub_key_data):
-    os.environ["HOME"] = str(tmpdir)
+def test_msg_enc_dec_roundtrip(create_alice_identity, create_bob_identity):
     import pEp
 
-    alice = pEp.Identity(
-        constants.ALICE_ADDRESS, constants.ALICE_NAME,
-        constants.ALICE_NAME_ADDR, constants.ALICE_FP, 0, ''
-        )
-
-    pEp.import_key(bob_pub_key_data)
-    bob = pEp.Identity(
-        constants.BOB_ADDRESS, constants.BOB_NAME, '',
-        constants.BOB_FP, 56, ''
-        )
+    alice = create_alice_identity
+    bob = create_bob_identity
 
     msg = pEp.Message(constants.OUTGOING_MSG, alice)
     msg.to = [bob]