old_contents: from piper import build
  from piper.db import core as db
  from piper.cli import cmd_piper
  from piper.cli.cli import CLIBase
  
  import mock
  
  
  class TestEntry(object):
      @mock.patch('piper.cli.cmd_piper.CLIBase')
      def test_calls(self, clibase):
          self.mock = mock.Mock()
          cmd_piper.entry(self.mock)
          clibase.assert_called_once_with(
              'piper',
              (build.ExecCLI, db.DbCLI),
              args=self.mock
          )
          clibase.return_value.entry.assert_called_once_with()
  
      @mock.patch('piper.cli.cmd_piper.CLIBase')
      def test_return_value(self, clibase):
          ret = cmd_piper.entry()
          assert ret is clibase.return_value.entry.return_value
  
  
  class TestEntryIntegration(object):
      def test_db_init(self):
          args = ['db', 'init']
          cli = CLIBase('piper', (db.DbCLI,), args=args)
  
          db.DbCLI.db = mock.Mock()
          cli.entry()
          db.DbCLI.db.init.assert_called_once_with(cli.config)
  
new_contents: from piper import build
  from piper.db import core as db
  from piper.cli import cmd_piper
  from piper.cli.cli import CLIBase
  
  import mock
  
  
  class TestEntry(object):
      @mock.patch('piper.cli.cmd_piper.CLIBase')
      def test_calls(self, clibase):
          self.mock = mock.Mock()
          cmd_piper.entry(self.mock)
          clibase.assert_called_once_with(
              'piper',
              (build.ExecCLI, db.DbCLI),
              args=self.mock
          )
          clibase.return_value.entry.assert_called_once_with()
  
      @mock.patch('piper.cli.cmd_piper.CLIBase')
      def test_return_value(self, clibase):
          ret = cmd_piper.entry()
          assert ret is clibase.return_value.entry.return_value
  
  
  class TestEntryIntegration(object):
      def test_db_init(self):
          args = ['db', 'init']
          cli = CLIBase('piper', (db.DbCLI,), args=args)
  
          db.DbCLI.db = mock.Mock()
          cli.entry()
          db.DbCLI.db.init.assert_called_once_with(cli.config)
  
      @mock.patch('piper.build.Build.run')
      def test_exec(self, run):
          args = ['exec']
          cli = CLIBase('piper', (build.ExecCLI,), args=args)
  
          cli.entry()
          run.assert_called_once_with()
  
subject: Add short integration test for ExecCLI.build