Run tests on min/max supported versions of Postgres

.github/workflows/core.yml

@@ -13,6 +13,7 @@ jobs:
     strategy:
       matrix:
         python-version: ["3.10", "3.11", "3.12", "3.13"]
+        postgres-version: ["14", "17"]
 
     steps:
       - name: Check out code
@@ -31,9 +32,9 @@ jobs:
 
       - name: Spin up DB in background
         run: |
-          docker-compose pull db
-          docker-compose build db
-          docker-compose up -d db
+          PG_VERSION=${{ matrix.postgres-version }} docker-compose pull db
+          PG_VERSION=${{ matrix.postgres-version }} docker-compose build db
+          PG_VERSION=${{ matrix.postgres-version }} docker-compose up -d db
 
       - name: Wait for DB to be ready
         run: |
@@ -64,7 +65,7 @@ jobs:
 
       - name: Stop services
         if: always()
-        run: docker-compose down
+        run: PG_VERSION=${{ matrix.postgres-version }} docker-compose down
 
 
   lint-ruff:

README.md

@@ -100,5 +100,4 @@ For instructions on installing `pg_cron`, see the [pg_cron documentation](https:
 
 ## Compatibility
 
-`django-pgcron` is compatible with Python 3.10 - 3.13, Django 5.0+, and Postgres 13 - 17.
-
+`django-pgcron` is compatible with Python 3.10 - 3.13, Django 5.0+, and Postgres 14 - 17.

docker-compose.yml

@@ -5,6 +5,8 @@ services:
     build:
       context: ./docker/postgres
       dockerfile: Dockerfile
+      args:
+        - PG_VERSION=${PG_VERSION:-17}
     volumes:
       - ./.db:/var/lib/postgresql/data
     environment:

docker/postgres/Dockerfile

@@ -1,4 +1,5 @@
-FROM postgres:17-alpine
+ARG PG_VERSION=17
+FROM postgres:${PG_VERSION}-alpine
 
 # Install everything needed, including clang/llvm
 RUN apk add --no-cache \
@@ -8,7 +9,7 @@ RUN apk add --no-cache \
       clang \
       llvm \
       musl-dev \
-      postgresql17-dev \
+      postgresql${PG_VERSION}-dev \
       curl
 
 # Build pg_cron
@@ -20,7 +21,7 @@ RUN curl -L https://github.com/citusdata/pg_cron/archive/v1.6.4.tar.gz | tar xz
     rm -rf pg_cron-1.6.4
 
 # remove build tools to reduce image size
-RUN apk del git make gcc clang llvm musl-dev postgresql17-dev
+RUN apk del git make gcc clang llvm musl-dev postgresql${PG_VERSION}-dev
 
 COPY init-pgcron.sh /docker-entrypoint-initdb.d/
 RUN chmod +x /docker-entrypoint-initdb.d/init-pgcron.sh

pgcron/tests/test_commands.py

@@ -4,7 +4,6 @@
 from django.core import management
 
 import pgcron
-import pgcron._jobs
 from pgcron import _registry
 from pgcron.models import Job