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Code Issues 32 Releases Wiki Activity

Fixed #23556 -- Raised a more meaningful error message when migrations refer to an unavailable node

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This commit is contained in:
Markus Holtermann
2014-09-26 00:24:17 +02:00
parent 388c6038fd
commit 85086c8158
19 changed files with 369 additions and 18 deletions
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10
tests/migrations/test_graph.py
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@@ -1,5 +1,5 @@
from django.test import TestCase
from django.db.migrations.graph import MigrationGraph, CircularDependencyError
from django.db.migrations.graph import CircularDependencyError, MigrationGraph, NodeNotFoundError
class GraphTests(TestCase):
@@ -156,10 +156,10 @@ class GraphTests(TestCase):
graph = MigrationGraph()
message = "Node ('app_b', '0001') not a valid node"
with self.assertRaisesMessage(ValueError, message):
with self.assertRaisesMessage(NodeNotFoundError, message):
graph.forwards_plan(("app_b", "0001"))
with self.assertRaisesMessage(ValueError, message):
with self.assertRaisesMessage(NodeNotFoundError, message):
graph.backwards_plan(("app_b", "0001"))
def test_missing_parent_nodes(self):
@@ -175,7 +175,7 @@ class GraphTests(TestCase):
graph.add_dependency("app_a.0003", ("app_a", "0003"), ("app_a", "0002"))
graph.add_dependency("app_a.0002", ("app_a", "0002"), ("app_a", "0001"))
msg = "Migration app_a.0001 dependencies reference nonexistent parent node ('app_b', '0002')"
with self.assertRaisesMessage(KeyError, msg):
with self.assertRaisesMessage(NodeNotFoundError, msg):
graph.add_dependency("app_a.0001", ("app_a", "0001"), ("app_b", "0002"))
def test_missing_child_nodes(self):
@@ -186,5 +186,5 @@ class GraphTests(TestCase):
graph = MigrationGraph()
graph.add_node(("app_a", "0001"), None)
msg = "Migration app_a.0002 dependencies reference nonexistent child node ('app_a', '0002')"
with self.assertRaisesMessage(KeyError, msg):
with self.assertRaisesMessage(NodeNotFoundError, msg):
graph.add_dependency("app_a.0002", ("app_a", "0002"), ("app_a", "0001"))