test: add test for A/B/C install

Signed-off-by: Enrico Joerns <[email protected]>

test/conftest.py

@@ -419,6 +419,31 @@ def rauc_dbus_service_with_system_external(tmp_path, dbus_session_bus, create_sy
     yield from rauc_dbus_service_helper(tmp_path, dbus_session_bus, create_system_files, system.output, "_external_")
 
 
+@pytest.fixture
+def rauc_dbus_service_with_system_abc(tmp_path, dbus_session_bus, create_system_files, system):
+    system.prepare_minimal_config()
+    # add third slot group
+    system.config["slot.rootfs.2"] = {
+        "device": "images/rootfs-2",
+        "type": "raw",
+        "bootname": "C",
+    }
+    system.config["slot.appfs.2"] = {
+        "device": "images/appfs-2",
+        "type": "raw",
+        "parent": "rootfs.2",
+    }
+    system.write_config()
+    # create target devices for third slot group
+    open(tmp_path / "images/rootfs-2", mode="w").close()
+    open(tmp_path / "images/appfs-2", mode="w").close()
+    # prepare grub env for 3 slots
+    run(
+        f'grub-editenv {tmp_path}/grubenv.test set ORDER="A B C" A_TRY="0" B_TRY="0" C_TRY="0" A_OK="1" B_OK="1" C_OK="1"'
+    )
+    yield from rauc_dbus_service_helper(tmp_path, dbus_session_bus, create_system_files, system.output, "A")
+
+
 @pytest.fixture
 def rauc_dbus_service_with_system_adaptive(tmp_path, dbus_session_bus, create_system_files):
     yield from rauc_dbus_service_helper(tmp_path, dbus_session_bus, create_system_files, "adaptive-test.conf", "A")

test/test_install.py

@@ -160,6 +160,32 @@ def test_install_rauc_external(rauc_dbus_service_with_system_external, tmp_path)
     assert os.path.getsize(tmp_path / "images/rootfs-0") > 0
 
 
+def test_install_abc(rauc_dbus_service_with_system_abc, tmp_path):
+    assert os.path.exists(tmp_path / "images/rootfs-1")
+    assert not os.path.getsize(tmp_path / "images/rootfs-1") > 0
+    assert os.path.exists(tmp_path / "images/rootfs-2")
+    assert not os.path.getsize(tmp_path / "images/rootfs-2") > 0
+
+    # copy to tmp path for safe ownership check
+    shutil.copyfile("good-verity-bundle.raucb", tmp_path / "good-verity-bundle.raucb")
+
+    # First installation should update rootfs-1 (implementation-defined)
+    out, err, exitcode = run(f"rauc install {tmp_path}/good-verity-bundle.raucb")
+
+    assert exitcode == 0
+    assert os.path.getsize(tmp_path / "images/rootfs-0") == 0
+    assert os.path.getsize(tmp_path / "images/rootfs-1") > 0
+    assert os.path.getsize(tmp_path / "images/rootfs-2") == 0
+
+    # Second installation should update rootfs-2 (implementation-defined)
+    out, err, exitcode = run(f"rauc install {tmp_path}/good-verity-bundle.raucb")
+
+    assert exitcode == 0
+    assert os.path.getsize(tmp_path / "images/rootfs-0") == 0
+    assert os.path.getsize(tmp_path / "images/rootfs-1") > 0
+    assert os.path.getsize(tmp_path / "images/rootfs-2") > 0
+
+
 @no_service
 def test_install_no_service(tmp_path, create_system_files, system):
     assert os.path.exists(tmp_path / "images/rootfs-1")