old_contents: """Implements tests for the code generation phase of the compiler
  
  """
  import unittest
  
  import ast
  from code_gen import CodeStore
  from tokens import Token
  import token_kinds
  
  class code_gen_tests(unittest.TestCase):
      def setUp(self):
          pass
  
      def test_asm_output(self):
          main_node = ast.MainNode(Token(token_kinds.number, "15"))
  
          code_store = CodeStore()
          main_node.make_code(code_store)
  
          expected_code = ["global _start",
                           "",
                           "_start:",
                           "     call main",
                           "     mov rdi, rax",
                           "     mov rax, 60",
                           "     syscall",
                           "main:",
                           "     push rbp",
                           "     mov rbp, rsp",
                           "     mov rax, 15",
                           "     pop rbp",
                           "     ret"]
  
          self.assertEqual(code_store.full_code(),
                           "\n".join(expected_code))
              
  if __name__ == "__main__":
      unittest.main()
  
new_contents: """Implements tests for the code generation phase of the compiler
  
  """
  import unittest
  
  import ast
  from code_gen import CodeStore
  from tokens import Token
  import token_kinds
  
  class code_gen_tests(unittest.TestCase):
      def setUp(self):
          pass
  
      def test_asm_output(self):
          main_node = ast.MainNode(Token(token_kinds.number, "15"))
  
          code_store = CodeStore()
          main_node.make_code(code_store)
  
          expected_code = ["global _start",
                           "",
                           "_start:",
                           "     call main",
                           "     mov rdi, rax",
                           "     mov rax, 60",
                           "     syscall",
                           "main:",
                           "     push rbp",
                           "     mov rbp, rsp",
                           "     mov rax, 15",
                           "     pop rbp",
                           "     ret"]
  
          self.assertEqual(code_store.full_code(),
                           "\n".join(expected_code))
  
  
  if __name__ == "__main__":
      unittest.main()
  
subject: Fix spacing