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https://github.com/sqlalchemy/sqlalchemy.git
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Federico Caselli
058c230cea
This change could be added to .git-blame-ignore-revs Change-Id: I7ba10052b26bc3c178d23fb50a1123d0aae965ca
50 lines
1.4 KiB
Python
50 lines
1.4 KiB
Python
"""test the inspection registry system."""
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from sqlalchemy import Column
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from sqlalchemy import inspect
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from sqlalchemy import Integer
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from sqlalchemy import MetaData
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from sqlalchemy import Table
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from sqlalchemy.sql import ClauseElement
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from sqlalchemy.testing import fixtures
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from sqlalchemy.testing import is_
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class TestCoreInspection(fixtures.TestBase):
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def test_table(self):
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t = Table("t", MetaData(), Column("x", Integer))
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is_(inspect(t), t)
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assert t.is_selectable
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is_(t.selectable, t)
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def test_select(self):
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t = Table("t", MetaData(), Column("x", Integer))
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s = t.select()
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is_(inspect(s), s)
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assert s.is_selectable
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is_(s.selectable, s)
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def test_column_expr(self):
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c = Column("x", Integer)
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is_(inspect(c), c)
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assert not c.is_selectable
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assert not hasattr(c, "selectable")
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def test_no_clause_element_on_clauseelement(self):
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# re [ticket:3802], there are in the wild examples
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# of looping over __clause_element__, therefore the
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# absence of __clause_element__ as a test for "this is the clause
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# element" must be maintained
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class Foo(ClauseElement):
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pass
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assert not hasattr(Foo(), "__clause_element__")
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def test_col_now_has_a_clauseelement(self):
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x = Column("foo", Integer)
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assert hasattr(x, "__clause_element__")
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