- document the inspection system

1 files changed, 33 insertions, 0 deletions

diff --git a/test/sql/test_inspect.py b/test/sql/test_inspect.py
new file mode 100644
index 000000000..9fcba16bd
--- /dev/null
+++ b/test/sql/test_inspect.py
@@ -0,0 +1,33 @@
+"""test the inspection registry system."""
+
+from sqlalchemy import inspect
+from sqlalchemy import Table, Column, Integer, MetaData
+from test.lib import fixtures
+from test.lib.testing import is_
+
+class TestCoreInspection(fixtures.TestBase):
+
+    def test_table(self):
+        t = Table('t', MetaData(),
+            Column('x', Integer)
+            )
+
+        is_(inspect(t), t)
+        assert t.is_selectable
+        is_(t.selectable, t)
+
+    def test_select(self):
+        t = Table('t', MetaData(),
+            Column('x', Integer)
+            )
+        s = t.select()
+
+        is_(inspect(s), s)
+        assert s.is_selectable
+        is_(s.selectable, s)
+
+    def test_column_expr(self):
+        c = Column('x', Integer)
+        is_(inspect(c), c)
+        assert not c.is_selectable
+        assert not hasattr(c, 'selectable')
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