code: def test_text_format(self):
      embedding = np.array([1.5, 2, 3])
      res = conn.execute("SELECT %t::vector", (embedding,)).fetchone()[
          0
      ]
      assert np.array_equal(res, embedding)
  
file_path: pgvector-python/tests/test_psycopg.py
imports: import numpy
  from pgvector.psycopg import register_vector, register_vector_async
  import psycopg
  import pytest
label_desc: Use image node_id 4 for calling the TestPsycopg obj's underlying member method code with example usage: obj.test_text_format() without return types