begin implementing inspection system for #2208

1 files changed, 62 insertions, 0 deletions

diff --git a/test/base/test_inspect.py b/test/base/test_inspect.py
new file mode 100644
index 000000000..b95b7d8c5
--- /dev/null
+++ b/test/base/test_inspect.py
@@ -0,0 +1,62 @@
+"""test the inspection registry system."""
+
+from test.lib.testing import eq_, assert_raises
+from sqlalchemy import exc, util
+from sqlalchemy import inspection, inspect
+from test.lib import fixtures
+
+class TestFixture(object):
+    pass
+
+class TestEvents(fixtures.TestBase):
+    """Test class- and instance-level event registration."""
+
+    def tearDown(self):
+        for type_ in list(inspection._registrars):
+            if issubclass(type_, TestFixture):
+                del inspection._registrars[type_]
+
+    def test_def_insp(self):
+        class SomeFoo(TestFixture):
+            pass
+
+        @inspection._inspects(SomeFoo)
+        def insp_somefoo(subject):
+            return {"insp":subject}
+
+        somefoo = SomeFoo()
+        insp = inspect(somefoo)
+        assert insp["insp"] is somefoo
+
+    def test_class_insp(self):
+        class SomeFoo(TestFixture):
+            pass
+
+        @inspection._inspects(SomeFoo)
+        class SomeFooInspect(object):
+            def __init__(self, target):
+                self.target = target
+
+        somefoo = SomeFoo()
+        insp = inspect(somefoo)
+        assert isinstance(insp, SomeFooInspect)
+        assert insp.target is somefoo
+
+    def test_hierarchy_insp(self):
+        class SomeFoo(TestFixture):
+            pass
+
+        class SomeSubFoo(SomeFoo):
+            pass
+
+        @inspection._inspects(SomeFoo)
+        def insp_somefoo(subject):
+            return 1
+
+        @inspection._inspects(SomeSubFoo)
+        def insp_somesubfoo(subject):
+            return 2
+
+        somefoo = SomeFoo()
+        eq_(inspect(SomeFoo()), 1)
+        eq_(inspect(SomeSubFoo()), 2)