Enable CI builds with postgresql and mysql

.travis.yml

@@ -5,8 +5,18 @@ python:
   - "3.7"
   - "3.8"
   - "3.9"
+env:
+  - TESTING_SQLALCHEMY_DATABASE_URI='sqlite:///budget.db'
+  - TESTING_SQLALCHEMY_DATABASE_URI='postgresql+psycopg2://postgres:@localhost/travis_ci_test'
+  - TESTING_SQLALCHEMY_DATABASE_URI='mysql+pymysql://travis:@localhost/travis_ci_test'
+before_script:
+  - psql -c 'create database travis_ci_test;' -U postgres
+  - mysql -e 'CREATE DATABASE travis_ci_test;'
 script: tox
 before_install:
   - python -m pip install --upgrade pip virtualenv
 install:
   - pip install tox-travis
+services:
+  - mysql
+  - postgresql

ihatemoney/tests/common/ihatemoney_testcase.py

@@ -1,3 +1,5 @@
+import os
+
 from flask_testing import TestCase
 from werkzeug.security import generate_password_hash
 
@@ -58,7 +60,9 @@ class BaseTestCase(TestCase):
 
 
 class IhatemoneyTestCase(BaseTestCase):
-    SQLALCHEMY_DATABASE_URI = "sqlite://"
+    SQLALCHEMY_DATABASE_URI = os.environ.get(
+        "TESTING_SQLALCHEMY_DATABASE_URI", "sqlite://"
+    )
     TESTING = True
     WTF_CSRF_ENABLED = False  # Simplifies the tests.
 

setup.cfg

@@ -51,6 +51,8 @@ dev =
     pytest>=5.4.1
     tox>=3.14.6
     zest.releaser>=6.20.1
+    psycopg2-binary>=2.8.5
+    PyMySQL>=0.9,<0.10
 
 doc =
     Sphinx==4.0.2

tox.ini

@@ -3,6 +3,7 @@ envlist = py39,py38,py37,py36,lint_docs
 skip_missing_interpreters = True
 
 [testenv]
+passenv = TESTING_SQLALCHEMY_DATABASE_URI
 
 commands =
     python --version