Add persistent lifecycle checkpoints and resumable inbox processing

tests/test_lifecycle_state.py

@@ -0,0 +1,29 @@
+import pytest
+
+from viano_bug_analysis.lifecycle import LifecycleError, State
+from viano_bug_analysis.lifecycle.state import ACTIVE, ORDER, check_transition
+
+
+@pytest.mark.parametrize("before,after", list(zip(ORDER, ORDER[1:])))
+def test_forward_transitions(before, after):
+    check_transition(before, after)
+
+
+@pytest.mark.parametrize("state", list(ACTIVE))
+def test_block_failure_and_progress_checkpoint(state):
+    check_transition(state, State.BLOCKED)
+    check_transition(state, State.FAILED_TO_ANALYZE)
+    check_transition(state, state)
+    check_transition(State.BLOCKED, state, state)
+
+
+@pytest.mark.parametrize("before,after", [(State.NEW, State.BUILDING_CASE), (State.HANDED_OFF, State.VALIDATED), (State.BLOCKED, State.INTERPRETING_CASE), (State.FAILED_TO_ANALYZE, State.BUILDING_CASE), (State.OUTPUT_READY, State.NEW)])
+def test_forbidden_transitions(before, after):
+    with pytest.raises(LifecycleError, match="Cannot transition"):
+        check_transition(before, after)
+
+
+def test_reopening():
+    check_transition(State.HANDED_OFF, State.REOPENED)
+    check_transition(State.FAILED_TO_ANALYZE, State.REOPENED)
+    check_transition(State.REOPENED, State.BUILDING_CASE)