text: #!/usr/bin/env python3
  
  import unittest
  from vppapigen import VPPAPI, Option, ParseError, Union, foldup_crcs, global_types
  import vppapigen
  
  # TODO
  # - test parsing of options, typedefs, enums, defines
  # - test JSON, C output
  
  
  class TestVersion(unittest.TestCase):
      @classmethod
      def setUpClass(cls):
          cls.parser = VPPAPI()
  
      def test_version(self):
          version_string = 'option version = "1.0.0";'
          r = self.parser.parse_string(version_string)
          self.assertTrue(isinstance(r[0], Option))
  
  class TestUnion(unittest.TestCase):
      @classmethod
      def setUpClass(cls):
          cls.parser = VPPAPI()
  
      def test_union(self):
          test_string = '''
          union foo_union {
          u32 a;
          u8 b;
          };
          '''
          r = self.parser.parse_string(test_string)
          self.assertTrue(isinstance(r[0], Union))
  
      def test_union_vla(self):
          test_string = '''
          union foo_union_vla {
          u32 a;
          u8 b[a];
          };
          autoreply define foo {
          vl_api_foo_union_vla_t v;
          };
          '''
          r = self.parser.parse_string(test_string)
          self.assertTrue(isinstance(r[0], Union))
          self.assertTrue(r[0].vla)
          s = self.parser.process(r)
  
  
          test_string2 = '''
          union foo_union_vla2 {
          u32 a;
          u8 b[a];
          u32 c;
          };
          autoreply define foo2 {
          vl_api_foo_union_vla2_t v;
          };
          '''
          self.assertRaises(ValueError, self.parser.parse_string, test_string2)
  
          test_string3 = '''
          union foo_union_vla3 {
          u32 a;
          u8 b[a];
          };
          autoreply define foo3 {
          vl_api_foo_union_vla3_t v;
          u32 x;
          };
          '''
          self.assertRaises(ValueError, self.parser.parse_string, test_string3)
  
  class TestTypedef(unittest.TestCase):
      @classmethod
      def setUpClass(cls):
          cls.parser = VPPAPI()
  
      def test_duplicatetype(self):
          test_string = '''
          typedef foo1 { u8 dummy; };
          typedef foo1 { u8 dummy; };
          '''
          self.assertRaises(KeyError, self.parser.parse_string, test_string)
  
  
  class TestDefine(unittest.TestCase):
      @classmethod
      def setUpClass(cls):
          cls.parser = VPPAPI()
  
      def test_unknowntype(self):
          test_string = 'define foo { foobar foo;};'
          with self.assertRaises(ParseError) as ctx:
              self.parser.parse_string(test_string)
          self.assertIn('Undefined type: foobar', str(ctx.exception))
  
          test_string = 'define { u8 foo;};'
          with self.assertRaises(ParseError) as ctx:
              self.parser.parse_string(test_string)
  
      def test_flags(self):
          test_string = '''
            manual_print dont_trace manual_endian define foo { u8 foo; };
            define foo_reply {u32 context; i32 retval; };
          '''
          r = self.parser.parse_string(test_string)
          self.assertIsNotNone(r)
          s = self.parser.process(r)
          self.assertIsNotNone(s)
          for d in s['Define']:
              if d.name == 'foo':
                  self.assertTrue(d.dont_trace)
                  self.assertTrue(d.manual_endian)
                  self.assertTrue(d.manual_print)
                  self.assertFalse(d.autoreply)
  
          test_string = '''
            nonexisting_flag define foo { u8 foo; };
          '''
          with self.assertRaises(ParseError):
              self.parser.parse_string(test_string)
  
      def test_options(self):
          test_string = '''
            define foo { option deprecated; u8 foo; };
            define foo_reply {u32 context; i32 retval; };
          '''
          r = self.parser.parse_string(test_string)
          self.assertIsNotNone(r)
          s = self.parser.process(r)
          self.assertIsNotNone(s)
  
  
  class TestService(unittest.TestCase):
      @classmethod
      def setUpClass(cls):
          cls.parser = VPPAPI()
  
      def test_service(self):
          test_string = '''
           autoreply define show_version { u8 foo;};
           service { rpc show_version returns show_version_reply; };
          '''
          r = self.parser.parse_string(test_string)
          s = self.parser.process(r)
          self.assertEqual(s['Service'][0].caller, 'show_version')
          self.assertEqual(s['Service'][0].reply, 'show_version_reply')
  
  
  def get_crc(apistring, name):
      vppapigen.global_types = {}
      parser = vppapigen.VPPAPI()
      r = parser.parse_string(apistring)
      s = parser.process(r)
      foldup_crcs(s['Define'])
      d = [f for f in s['Define'] if f.name == name]
      return d[0].crc
  
  
  class TestCRC(unittest.TestCase):
      def test_crc(self):
          test_string = '''
           typedef list { u8 foo; };
           autoreply define foo { u8 foo; vl_api_list_t l;};
          '''
          crc = get_crc(test_string, 'foo')
  
          # modify underlaying type
          test_string = '''
           typedef list { u8 foo2; };
           autoreply define foo { u8 foo;  vl_api_list_t l;};
          '''
          crc2 = get_crc(test_string, 'foo')
          self.assertNotEqual(crc, crc2)
  
          # two user-defined types
          test_string = '''
           typedef address { u8 foo2; };
           typedef list { u8 foo2; vl_api_address_t add; };
           autoreply define foo { u8 foo;  vl_api_list_t l;};
          '''
          crc3 = get_crc(test_string, 'foo')
  
          test_string = '''
           typedef address { u8 foo3; };
           typedef list { u8 foo2; vl_api_address_t add; };
           autoreply define foo { u8 foo;  vl_api_list_t l;};
          '''
          crc4 = get_crc(test_string, 'foo')
          self.assertNotEqual(crc3, crc4)
  
          test_string = '''
           typedef address { u8 foo3; };
           typedef list { u8 foo2; vl_api_address_t add; u8 foo3; };
           autoreply define foo { u8 foo;  vl_api_list_t l;};
          '''
          crc5 = get_crc(test_string, 'foo')
          self.assertNotEqual(crc4, crc5)
  
          test_string = '''
  typedef ip6_address
  {
    u8 foo;
  };
  typedef srv6_sid_list
  {
    u8 num_sids;
    u32 weight;
    u32 sl_index;
    vl_api_ip6_address_t sids[16];
  };
  autoreply define sr_policy_add
  {
    u32 client_index;
    u32 context;
    vl_api_ip6_address_t bsid_addr;
    u32 weight;
    bool is_encap;
    bool is_spray;
    u32 fib_table;
    vl_api_srv6_sid_list_t sids;
  };
  '''
  
          crc = get_crc(test_string, 'sr_policy_add')
  
          test_string = '''
  typedef ip6_address
  {
    u8 foo;
  };
  typedef srv6_sid_list
  {
    u8 num_sids;
    u32 weight;
    vl_api_ip6_address_t sids[16];
  };
  autoreply define sr_policy_add
  {
    u32 client_index;
    u32 context;
    vl_api_ip6_address_t bsid_addr;
    u32 weight;
    bool is_encap;
    bool is_spray;
    u32 fib_table;
    vl_api_srv6_sid_list_t sids;
  };
  '''
          crc2 = get_crc(test_string, 'sr_policy_add')
  
          self.assertNotEqual(crc, crc2)
  
  if __name__ == '__main__':
      unittest.main(verbosity=2)
  