Remove calls to the deprecated method "assertEquals" (#57)

It has been removed in python 3.12

testsample.py

@@ -31,7 +31,7 @@ class BMSMilterTestCase(unittest.TestCase):
     count = 10
     while count > 0:
       rc = ctx._connect(helo='milter-template.example.org')
-      self.assertEquals(rc,Milter.CONTINUE)
+      self.assertEqual(rc,Milter.CONTINUE)
       with open('test/'+fname,'rb') as fp:
         rc = ctx._feedFile(fp)
       milter = ctx.getpriv()
@@ -46,7 +46,7 @@ class BMSMilterTestCase(unittest.TestCase):
     ctx._setsymval('{auth_type}','batcomputer')
     ctx._setsymval('j','mailhost')
     rc = ctx._connect()
-    self.assertEquals(rc,Milter.CONTINUE)
+    self.assertEqual(rc,Milter.CONTINUE)
     with open('test/'+fname,'rb') as fp:
       rc = ctx._feedFile(fp)
     milter = ctx.getpriv()
@@ -69,7 +69,7 @@ class BMSMilterTestCase(unittest.TestCase):
     milter = ctx.getpriv()
 #    self.assertTrue(milter.user == 'batman',"getsymval failed: "+
 #        "%s != %s"%(milter.user,'batman'))
-    self.assertEquals(milter.user,'batman')
+    self.assertEqual(milter.user,'batman')
     self.assertTrue(milter.auth_type != 'batcomputer',"setsymlist failed")
     self.assertTrue(rc == Milter.ACCEPT)
     self.assertTrue(ctx._bodyreplaced,"Message body not replaced")

testutils.py

@@ -24,11 +24,11 @@ class AddrCacheTestCase(unittest.TestCase):
     self.assertTrue(cache.has_key('foo@bar.com'))
     self.assertTrue(not cache.has_key('hello@bar.com'))
     self.assertTrue('baz@bar.com' in cache)
-    self.assertEquals(cache['temp@bar.com'],'testing')
+    self.assertEqual(cache['temp@bar.com'],'testing')
     s = open(self.fname).readlines()
     self.assertTrue(len(s) == 2)
     self.assertTrue(s[0].startswith('foo@bar.com '))
-    self.assertEquals(s[1].strip(),'baz@bar.com')
+    self.assertEqual(s[1].strip(),'baz@bar.com')
     # check that new result overrides old
     cache['temp@bar.com'] = None
     self.assertTrue(not cache['temp@bar.com'])