Add tests for the plugin mechanism

.circleci/config.yml

@@ -68,10 +68,16 @@ jobs:
                     .circleci/integration-test.py build-image
 
             - run:
-                name: Run basic tests tests
+                name: Run basic tests
                 command: |
                     .circleci/integration-test.py run-test basic-tests test_hub.py test_install.py test_extensions.py
 
+            - run:
+                name: Run plugin tests
+                command: |
+                    .circleci/integration-test.py run-test \
+                        --installer-args "--plugin /srv/src/integration-tests/plugins/simplest" \
+                        plugins test_simplest_plugin.py
 
 
     documentation:

integration-tests/plugins/simplest/setup.py

@@ -0,0 +1,9 @@
+from setuptools import setup
+
+setup(
+    name="tljh-simplest",
+    entry_points={"tljh": ["simplest = tljh_simplest"]},
+    py_modules=["tljh_simplest"],
+)
+
+

integration-tests/plugins/simplest/tljh_simplest.py

@@ -0,0 +1,33 @@
+"""
+Simplest plugin that excercises all the hooks
+"""
+from tljh.hooks import hookimpl
+
+
+@hookimpl
+def tljh_extra_user_conda_packages():
+    return [
+        'hypothesis',
+    ]
+
+
+@hookimpl
+def tljh_extra_user_pip_packages():
+    return [
+        'django',
+    ]
+
+
+@hookimpl
+def tljh_extra_apt_packages():
+    return [
+        'sl',
+    ]
+
+
+@hookimpl
+def tljh_config_post_install(config):
+    # Put an arbitrary marker we can test for
+    config['simplest_plugin'] = {
+        'present': True
+    }

integration-tests/test_simplest_plugin.py

@@ -0,0 +1,47 @@
+"""
+Test simplest plugin
+"""
+from ruamel.yaml import YAML
+import os
+import subprocess
+
+yaml = YAML(typ='rt')
+
+
+def test_apt_packages():
+    """
+    Test extra apt packages are installed
+    """
+    assert os.path.exists('/usr/bin/sl')
+
+
+def test_pip_packages():
+    """
+    Test extra user pip packages are installed
+    """
+    subprocess.check_call([
+        '/opt/tljh/user/bin/python3',
+        '-c',
+        'import django'
+    ])
+
+
+def test_conda_packages():
+    """
+    Test extra user conda packages are installed
+    """
+    subprocess.check_call([
+        '/opt/tljh/user/bin/python3',
+        '-c',
+        'import hypothesis'
+    ])
+
+
+def test_config_hook():
+    """
+    Check config changes are present
+    """
+    with open('/opt/tljh/config.yaml') as f:
+        data = yaml.load(f)
+
+    assert data['simplest_plugin']['present']