forked from Archives/langchain
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
48 lines
1.9 KiB
Python
48 lines
1.9 KiB
Python
"""Test SQL Database Chain."""
|
|
from sqlalchemy import Column, Integer, MetaData, String, Table, create_engine, insert
|
|
|
|
from langchain.chains.sql_database.base import SQLDatabaseChain
|
|
from langchain.llms.openai import OpenAI
|
|
from langchain.sql_database import SQLDatabase
|
|
|
|
metadata_obj = MetaData()
|
|
|
|
user = Table(
|
|
"user",
|
|
metadata_obj,
|
|
Column("user_id", Integer, primary_key=True),
|
|
Column("user_name", String(16), nullable=False),
|
|
Column("user_company", String(16), nullable=False),
|
|
)
|
|
|
|
|
|
def test_sql_database_run() -> None:
|
|
"""Test that commands can be run successfully and returned in correct format."""
|
|
engine = create_engine("sqlite:///:memory:")
|
|
metadata_obj.create_all(engine)
|
|
stmt = insert(user).values(user_id=13, user_name="Harrison", user_company="Foo")
|
|
with engine.connect() as conn:
|
|
conn.execute(stmt)
|
|
db = SQLDatabase(engine)
|
|
db_chain = SQLDatabaseChain(llm=OpenAI(temperature=0), database=db)
|
|
output = db_chain.run("What company does Harrison work at?")
|
|
expected_output = " Harrison works at Foo."
|
|
assert output == expected_output
|
|
|
|
|
|
def test_sql_database_run_update() -> None:
|
|
"""Test that update commands run successfully and returned in correct format."""
|
|
engine = create_engine("sqlite:///:memory:")
|
|
metadata_obj.create_all(engine)
|
|
stmt = insert(user).values(user_id=13, user_name="Harrison", user_company="Foo")
|
|
with engine.connect() as conn:
|
|
conn.execute(stmt)
|
|
db = SQLDatabase(engine)
|
|
db_chain = SQLDatabaseChain(llm=OpenAI(temperature=0), database=db)
|
|
output = db_chain.run("Update Harrison's workplace to Bar")
|
|
expected_output = " Harrison's workplace has been updated to Bar."
|
|
assert output == expected_output
|
|
output = db_chain.run("What company does Harrison work at?")
|
|
expected_output = " Harrison works at Bar."
|
|
assert output == expected_output
|