Initial commit

tests/integration/conftest.py

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+# Copyright 2026 Valentin Haudiquet
+# See LICENSE file for licensing details.
+#
+# The integration tests use the Jubilant library. See https://documentation.ubuntu.com/jubilant/
+# To learn more about testing, see https://documentation.ubuntu.com/ops/latest/explanation/testing/
+
+import logging
+import os
+import pathlib
+import sys
+import time
+
+import jubilant
+import pytest
+
+logger = logging.getLogger(__name__)
+
+
+@pytest.fixture(scope="module")
+def juju(request: pytest.FixtureRequest):
+    """Create a temporary Juju model for running tests."""
+    with jubilant.temp_model() as juju:
+        yield juju
+
+        if request.session.testsfailed:
+            logger.info("Collecting Juju logs...")
+            time.sleep(0.5)  # Wait for Juju to process logs.
+            log = juju.debug_log(limit=1000)
+            print(log, end="", file=sys.stderr)
+
+
+@pytest.fixture(scope="session")
+def charm():
+    """Return the path of the charm under test."""
+    if "CHARM_PATH" in os.environ:
+        charm_path = pathlib.Path(os.environ["CHARM_PATH"])
+        if not charm_path.exists():
+            raise FileNotFoundError(f"Charm does not exist: {charm_path}")
+        return charm_path
+    # Modify below if you're building for multiple bases or architectures.
+    charm_paths = list(pathlib.Path(".").glob("*.charm"))
+    if not charm_paths:
+        raise FileNotFoundError("No .charm file in current directory")
+    if len(charm_paths) > 1:
+        path_list = ", ".join(str(path) for path in charm_paths)
+        raise ValueError(f"More than one .charm file in current directory: {path_list}")
+    return charm_paths[0]

tests/integration/test_charm.py

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+# Copyright 2026 Valentin Haudiquet
+# See LICENSE file for licensing details.
+#
+# The integration tests use the Jubilant library. See https://documentation.ubuntu.com/jubilant/
+# To learn more about testing, see https://documentation.ubuntu.com/ops/latest/explanation/testing/
+
+import logging
+import pathlib
+
+import jubilant
+
+logger = logging.getLogger(__name__)
+
+
+def test_deploy(charm: pathlib.Path, juju: jubilant.Juju):
+    """Deploy the charm under test."""
+    juju.deploy(charm.resolve(), app="charmed-server")
+    juju.wait(jubilant.all_active)
+
+
+def test_workload_version_is_set(charm: pathlib.Path, juju: jubilant.Juju):
+    """Check that the correct version of the workload is running."""
+    version = juju.status().apps["charmed-server"].version
+    assert version is not None
+    assert len(version) > 0
+    assert version == "nginx/1.18.0 (Ubuntu)"

tests/unit/test_charm.py

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+# Copyright 2026 Valentin Haudiquet
+# See LICENSE file for licensing details.
+#
+# To learn more about testing, see https://documentation.ubuntu.com/ops/latest/explanation/testing/
+
+import pytest
+from ops import testing
+
+from charm import CharmedServerCharm
+
+
+def mock_get_version():
+    """Get a mock version string without executing the workload code."""
+    return "1.0.0"
+
+
+def test_start(monkeypatch: pytest.MonkeyPatch):
+    """Test that the charm has the correct state after handling the start event."""
+    # Arrange:
+    ctx = testing.Context(CharmedServerCharm)
+    monkeypatch.setattr("charm.charmed_server.get_version", mock_get_version)
+    monkeypatch.setattr("charm.charmed_server.is_installed", lambda: True)
+    monkeypatch.setattr("charm.charmed_server.ensure_config", lambda: False)
+    monkeypatch.setattr("charm.charmed_server.is_running", lambda: True)
+    # Act:
+    state_out = ctx.run(ctx.on.start(), testing.State())
+    # Assert:
+    assert state_out.workload_version is not None
+    assert state_out.unit_status == testing.ActiveStatus()