Tests a basic dependency graph: app_a: 0001 <-- 0002 <--- 0003 <-- 0004 / app_b: 0001 <-- 0002 <-/
(self)
| 9 | """ |
| 10 | |
| 11 | def test_simple_graph(self): |
| 12 | """ |
| 13 | Tests a basic dependency graph: |
| 14 | |
| 15 | app_a: 0001 <-- 0002 <--- 0003 <-- 0004 |
| 16 | / |
| 17 | app_b: 0001 <-- 0002 <-/ |
| 18 | """ |
| 19 | # Build graph |
| 20 | graph = MigrationGraph() |
| 21 | graph.add_node(("app_a", "0001"), None) |
| 22 | graph.add_node(("app_a", "0002"), None) |
| 23 | graph.add_node(("app_a", "0003"), None) |
| 24 | graph.add_node(("app_a", "0004"), None) |
| 25 | graph.add_node(("app_b", "0001"), None) |
| 26 | graph.add_node(("app_b", "0002"), None) |
| 27 | graph.add_dependency("app_a.0004", ("app_a", "0004"), ("app_a", "0003")) |
| 28 | graph.add_dependency("app_a.0003", ("app_a", "0003"), ("app_a", "0002")) |
| 29 | graph.add_dependency("app_a.0002", ("app_a", "0002"), ("app_a", "0001")) |
| 30 | graph.add_dependency("app_a.0003", ("app_a", "0003"), ("app_b", "0002")) |
| 31 | graph.add_dependency("app_b.0002", ("app_b", "0002"), ("app_b", "0001")) |
| 32 | # Test root migration case |
| 33 | self.assertEqual( |
| 34 | graph.forwards_plan(("app_a", "0001")), |
| 35 | [("app_a", "0001")], |
| 36 | ) |
| 37 | # Test branch B only |
| 38 | self.assertEqual( |
| 39 | graph.forwards_plan(("app_b", "0002")), |
| 40 | [("app_b", "0001"), ("app_b", "0002")], |
| 41 | ) |
| 42 | # Test whole graph |
| 43 | self.assertEqual( |
| 44 | graph.forwards_plan(("app_a", "0004")), |
| 45 | [ |
| 46 | ("app_b", "0001"), |
| 47 | ("app_b", "0002"), |
| 48 | ("app_a", "0001"), |
| 49 | ("app_a", "0002"), |
| 50 | ("app_a", "0003"), |
| 51 | ("app_a", "0004"), |
| 52 | ], |
| 53 | ) |
| 54 | # Test reverse to b:0002 |
| 55 | self.assertEqual( |
| 56 | graph.backwards_plan(("app_b", "0002")), |
| 57 | [("app_a", "0004"), ("app_a", "0003"), ("app_b", "0002")], |
| 58 | ) |
| 59 | # Test roots and leaves |
| 60 | self.assertEqual( |
| 61 | graph.root_nodes(), |
| 62 | [("app_a", "0001"), ("app_b", "0001")], |
| 63 | ) |
| 64 | self.assertEqual( |
| 65 | graph.leaf_nodes(), |
| 66 | [("app_a", "0004"), ("app_b", "0002")], |
| 67 | ) |
| 68 |
nothing calls this directly
no test coverage detected