docstr: Test that the statement can contain unicode literals.
code: def test_unicode_content(self):
      """
      Test that the statement can contain unicode literals.
      """
      unicode_value = "\xf6\xe4\xfc\xd6\xc4\xdc\xdf\u20ac"
      con = self.con
      traced_statements = []
  
      def trace(statement):
          traced_statements.append(statement)
  
      con.set_trace_callback(trace)
      con.execute("create table foo(x)")
      con.execute("insert into foo(x) values ('%s')" % unicode_value)
      con.commit()
      self.assertTrue(
          any(unicode_value in stmt for stmt in traced_statements),
          "Unicode data %s garbled in trace callback: %s"
          % (
              ascii(unicode_value),
              ", ".join(map(ascii, traced_statements)),
          ),
      )
  
imports: import contextlib
  import sqlite3
  import unittest
  from test.support.os_helper import TESTFN, unlink
  from .util import memory_database, cx_limit, with_tracebacks
  from .util import MemoryDatabaseMixin
label_desc: Use image node_id 4 for calling the TraceCallbackTests obj's underlying member method code with example usage: obj.test_unicode_content() without return types