tests: global constants (#889)

small clean up

can/tests/__init__.py

@@ -0,0 +1,8 @@
+import glob
+import os
+
+from opendbc import DBC_PATH
+
+ALL_DBCS = [os.path.basename(dbc).split('.')[0] for dbc in
+            glob.glob(f"{DBC_PATH}/*.dbc")]
+TEST_DBC = os.path.abspath(os.path.join(os.path.dirname(__file__), "test.dbc"))

can/tests/test_dbc_exceptions.py

@@ -5,6 +5,7 @@ import unittest
 from opendbc.can.parser import CANParser, CANDefine
 from opendbc.can.packer import CANPacker
 
+
 class TestCanParserPackerExceptions(unittest.TestCase):
   def test_civic_exceptions(self):
     dbc_file = "honda_civic_touring_2016_can_generated"

can/tests/test_dbc_parser.py

@@ -1,19 +1,11 @@
 #!/usr/bin/env python3
-import glob
-import os
 import unittest
 
-from opendbc import DBC_PATH
 from opendbc.can.parser import CANParser
+from opendbc.can.tests import ALL_DBCS
 
 
 class TestDBCParser(unittest.TestCase):
-  @classmethod
-  def setUpClass(cls):
-    cls.dbcs = []
-    for dbc in glob.glob(f"{DBC_PATH}/*.dbc"):
-      cls.dbcs.append(os.path.basename(dbc).split('.')[0])
-
   def test_parse_all_dbcs(self):
     """
       Dynamic DBC parser checks:
@@ -23,7 +15,7 @@ class TestDBCParser(unittest.TestCase):
         - All BO_, SG_, VAL_ lines for syntax errors
     """
 
-    for dbc in self.dbcs:
+    for dbc in ALL_DBCS:
       with self.subTest(dbc=dbc):
         CANParser(dbc, [], [], 0)
 

can/tests/test_packer_parser.py

@@ -1,5 +1,4 @@
 #!/usr/bin/env python3
-import os
 import unittest
 import random
 from functools import partial
@@ -7,9 +6,7 @@ from functools import partial
 import cereal.messaging as messaging
 from opendbc.can.parser import CANParser
 from opendbc.can.packer import CANPacker
-
-
-TEST_DBC = os.path.abspath(os.path.join(os.path.dirname(__file__), "test.dbc"))
+from opendbc.can.tests import TEST_DBC
 
 
 # Python implementation so we don't have to depend on boardd