feat(ci): run tests against multiple versions (#51)

* feat(ci): run tests against multiple versions

* add uuid to test

* fix and lint

* fix table name

* fix type

* Update DEVELOPER.md

* Update DEVELOPER.md

.github/sync-repo-settings.yaml

@@ -27,7 +27,11 @@ branchProtectionRules:
     requiredStatusCheckContexts:
       - "cla/google"
       - "lint"
-      - "mysql-integration-test-pr (langchain-cloud-sql-testing)"
+      - "mysql-integration-test-pr-py38 (langchain-cloud-sql-testing)"
+      - "mysql-integration-test-pr-py39 (langchain-cloud-sql-testing)"
+      - "mysql-integration-test-pr-py310 (langchain-cloud-sql-testing)"
+      - "mysql-integration-test-pr-py311 (langchain-cloud-sql-testing)"
+      - "mysql-integration-test-pr-py312 (langchain-cloud-sql-testing)"
       - "conventionalcommits.org"
       - "header-check"
     # - Add required status checks like presubmit tests

DEVELOPER.md

@@ -0,0 +1,81 @@
+# DEVELOPER.md
+
+## Versioning
+
+This library follows [Semantic Versioning](http://semver.org/).
+
+## Processes
+
+### Conventional Commit messages
+
+This repository uses tool [Release Please](https://github.com/googleapis/release-please) to create GitHub and PyPi releases. It does so by parsing your
+git history, looking for [Conventional Commit messages](https://www.conventionalcommits.org/),
+and creating release PRs.
+
+Learn more by reading [How should I write my commits?](https://github.com/googleapis/release-please?tab=readme-ov-file#how-should-i-write-my-commits)
+
+## Testing
+
+### Run tests locally
+
+1. Set environment variables for `INSTANCE_ID`, `DB_NAME`, `TABLE_NAME`, `REGION`, `DB_USER`, `DB_PASSWORD`
+
+1. Run pytest to automatically run all tests:
+
+    ```bash
+    pytest
+    ```
+
+### CI Platform Setup
+
+Cloud Build is used to run tests against Google Cloud resources in test project: langchain-cloud-sql-testing.
+Each test has a corresponding Cloud Build trigger, see [all triggers][triggers].
+These tests are registered as required tests in `.github/sync-repo-settings.yaml`.
+
+#### Trigger Setup
+
+Cloud Build triggers (for Python versions 3.8 to 3.11) were created with the following specs:
+
+```YAML
+name: mysql-integration-test-pr-py38
+description: Run integration tests on PR for Python 3.8
+filename: integration.cloudbuild.yaml
+github:
+  name: langchain-google-cloud-sql-mysql-python
+  owner: googleapis
+  pullRequest:
+    branch: .*
+    commentControl: COMMENTS_ENABLED_FOR_EXTERNAL_CONTRIBUTORS_ONLY
+ignoredFiles:
+  - docs/**
+  - .kokoro/**
+  - .github/**
+  - "*.md"
+substitutions:
+  _INSTANCE_ID: <ADD_VALUE>
+  _DB_NAME: <ADD_VALUE>
+  _REGION: us-central1
+  _VERSION: "3.8"
+```
+
+Use `gcloud builds triggers import --source=trigger.yaml` create triggers via the command line
+
+#### Project Setup
+
+1. Create an Cloud SQL for PostgreSQL instance and database
+1. Setup Cloud Build triggers (above)
+
+#### Run tests with Cloud Build
+
+* Run integration test:
+
+    ```bash
+    gcloud builds submit --config integration.cloudbuild.yaml --region us-central1 --substitutions=_INSTANCE_ID=$INSTANCE_ID,_DB_NAME=$DB_NAME,_REGION=$REGION
+    ```
+
+#### Trigger
+
+To run Cloud Build tests on GitHub from external contributors, ie RenovateBot, comment: `/gcbrun`.
+
+
+[triggers]: https://console.cloud.google.com/cloud-build/triggers?e=13802955&project=langchain-cloud-sql-testing

integration.cloudbuild.yaml

@@ -14,35 +14,39 @@
 
 steps:
   - id: Install dependencies
-    name: python:3.11
+    name: python:${_VERSION}
     entrypoint: pip
     args: ["install", "--user", "-r", "requirements.txt"]
 
   - id: Install module (and test requirements)
-    name: python:3.11
+    name: python:${_VERSION}
     entrypoint: pip
     args: ["install", ".[test]", "--user"]
 
   - id: Run integration tests
-    name: python:3.11
+    name: python:${_VERSION}
     entrypoint: python
     args: ["-m", "pytest"]
     env:
-      - 'PROJECT_ID=$PROJECT_ID'
-      - 'INSTANCE_ID=$_INSTANCE_ID'
-      - 'DB_NAME=$_DB_NAME'
-      - 'TABLE_NAME=test-$BUILD_ID'
-      - 'REGION=$_REGION'
-    secretEnv: ['DB_USER', 'DB_PASSWORD']
+      - "PROJECT_ID=$PROJECT_ID"
+      - "INSTANCE_ID=$_INSTANCE_ID"
+      - "DB_NAME=$_DB_NAME"
+      - "TABLE_NAME=test-$BUILD_ID"
+      - "REGION=$_REGION"
+    secretEnv: ["DB_USER", "DB_PASSWORD"]
 
 availableSecrets:
   secretManager:
-  - versionName: projects/$PROJECT_ID/secrets/langchain-test-mysql-username/versions/1
-    env: 'DB_USER'
-  - versionName: projects/$PROJECT_ID/secrets/langchain-test-mysql-password/versions/1
-    env: 'DB_PASSWORD'
+    - versionName: projects/$PROJECT_ID/secrets/langchain-test-mysql-username/versions/1
+      env: "DB_USER"
+    - versionName: projects/$PROJECT_ID/secrets/langchain-test-mysql-password/versions/1
+      env: "DB_PASSWORD"
 
 substitutions:
   _INSTANCE_ID: test-instance
   _REGION: us-central1
   _DB_NAME: test
+  _VERSION: "3.8"
+
+options:
+  dynamicSubstitutions: true

src/langchain_google_cloud_sql_mysql/loader.py

@@ -12,8 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import json
-from collections.abc import Iterable
-from typing import Any, Dict, Iterator, List, Optional, Sequence, cast
+from typing import Any, Dict, Iterable, Iterator, List, Optional, cast
 
 import pymysql
 import sqlalchemy

tests/integration/test_mysql_chat_message_history.py

@@ -12,6 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 import os
+import uuid
 from typing import Generator
 
 import pytest
@@ -25,17 +26,21 @@
 region = os.environ["REGION"]
 instance_id = os.environ["INSTANCE_ID"]
 db_name = os.environ["DB_NAME"]
-table_name = "message_store"
+table_name = "message_store" + str(uuid.uuid4())
+malformed_table = "malformed_table" + str(uuid.uuid4())
 
 
 @pytest.fixture(name="memory_engine")
 def setup() -> Generator:
     engine = MySQLEngine.from_instance(
-        project_id=project_id, region=region, instance=instance_id, database=db_name
+        project_id=project_id,
+        region=region,
+        instance=instance_id,
+        database=db_name,
     )
 
     # create table with malformed schema (missing 'type')
-    query = """CREATE TABLE malformed_table (
+    query = f"""CREATE TABLE `{malformed_table}` (
         id INT AUTO_INCREMENT PRIMARY KEY,
         session_id TEXT NOT NULL,
         data JSON NOT NULL
@@ -47,7 +52,7 @@ def setup() -> Generator:
     # use default table for MySQLChatMessageHistory
     with engine.connect() as conn:
         conn.execute(sqlalchemy.text(f"DROP TABLE IF EXISTS `{table_name}`"))
-        conn.execute(sqlalchemy.text(f"DROP TABLE IF EXISTS malformed_table"))
+        conn.execute(sqlalchemy.text(f"DROP TABLE IF EXISTS `{malformed_table}`"))
         conn.commit()
 
 
@@ -71,7 +76,9 @@ def test_chat_message_history(memory_engine: MySQLEngine) -> None:
     assert len(history.messages) == 0
 
 
-def test_chat_message_history_table_does_not_exist(memory_engine: MySQLEngine) -> None:
+def test_chat_message_history_table_does_not_exist(
+    memory_engine: MySQLEngine,
+) -> None:
     """Test that MySQLChatMessageHistory fails if table does not exist."""
     with pytest.raises(AttributeError) as exc_info:
         MySQLChatMessageHistory(
@@ -90,5 +97,7 @@ def test_chat_message_history_table_malformed_schema(
     """Test that MySQLChatMessageHistory fails if schema is malformed."""
     with pytest.raises(IndexError):
         MySQLChatMessageHistory(
-            engine=memory_engine, session_id="test", table_name="malformed_table"
+            engine=memory_engine,
+            session_id="test",
+            table_name=malformed_table,
         )