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test(postgres): add example of initdb.d usage for postgres #572

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Merged
alexanderankin merged 2 commits into from
May 14, 2024
Merged

test(postgres): add example of initdb.d usage for postgres #572

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add example of initdb.d usage for postgres
alexanderankin May 14, 2024
f4078f6
lint
alexanderankin May 14, 2024
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6 changes: 6 additions & 0 deletions modules/postgres/tests/fixtures/postgres_create_example_table.sql
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Original file line number Diff line number Diff line change
@@ -0,0 +1,6 @@
create table example
(
id serial not null primary key,
name varchar(255) not null unique,
description text null
);
20 changes: 20 additions & 0 deletions modules/postgres/tests/test_postgres.py
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@@ -1,3 +1,5 @@
from pathlib import Path

import pytest

from testcontainers.postgres import PostgresContainer
Expand Down Expand Up @@ -77,3 +79,21 @@ def test_quoted_password():
# it raises ValueError, but auth (OperationalError) = more interesting
with sqlalchemy.create_engine(raw_pass_url).begin() as connection:
connection.execute(sqlalchemy.text("select 1=1"))


def test_show_how_to_initialize_db_via_initdb_dir():
postgres_container = PostgresContainer("postgres:16-alpine")
script = Path(__file__).parent / "fixtures" / "postgres_create_example_table.sql"
postgres_container.with_volume_mapping(host=str(script), container=f"/docker-entrypoint-initdb.d/{script.name}")

insert_query = "insert into example(name, description) VALUES ('sally', 'sells seashells');"
select_query = "select id, name, description from example;"

with postgres_container as postgres:
engine = sqlalchemy.create_engine(postgres.get_connection_url())
with engine.begin() as connection:
connection.execute(sqlalchemy.text(insert_query))
result = connection.execute(sqlalchemy.text(select_query))
result = result.fetchall()
assert len(result) == 1
assert result[0] == (1, "sally", "sells seashells")