python类sql()的实例源码

def test_init(self):
        self.assertTrue(isinstance(sql.Literal('foo'), sql.Literal))
        self.assertTrue(isinstance(sql.Literal('foo'), sql.Literal))
        self.assertTrue(isinstance(sql.Literal(b'foo'), sql.Literal))
        self.assertTrue(isinstance(sql.Literal(42), sql.Literal))
        self.assertTrue(isinstance(
            sql.Literal(dt.date(2016, 12, 31)), sql.Literal))

def test_wrapped(self):
        self.assertEqual(sql.Literal('foo').wrapped, 'foo')

def test_repr(self):
        self.assertEqual(repr(sql.Literal("foo")), "Literal('foo')")
        self.assertEqual(str(sql.Literal("foo")), "Literal('foo')")
        self.assertQuotedEqual(sql.Literal("foo").as_string(self.conn), "'foo'")
        self.assertEqual(sql.Literal(42).as_string(self.conn), "42")
        self.assertEqual(
            sql.Literal(dt.date(2017, 1, 1)).as_string(self.conn),
            "'2017-01-01'::date")

def test_eq(self):
        self.assertTrue(sql.Literal('foo') == sql.Literal('foo'))
        self.assertTrue(sql.Literal('foo') != sql.Literal('bar'))
        self.assertTrue(sql.Literal('foo') != 'foo')
        self.assertTrue(sql.Literal('foo') != sql.SQL('foo'))

def test_must_be_adaptable(self):
        class Foo(object):
            pass

        self.assertRaises(psycopg2.ProgrammingError,
            sql.Literal(Foo()).as_string, self.conn)

def test_init(self):
        self.assertTrue(isinstance(sql.SQL('foo'), sql.SQL))
        self.assertTrue(isinstance(sql.SQL('foo'), sql.SQL))
        self.assertRaises(TypeError, sql.SQL, 10)
        self.assertRaises(TypeError, sql.SQL, dt.date(2016, 12, 31))

def test_string(self):
        self.assertEqual(sql.SQL('foo').string, 'foo')

def test_repr(self):
        self.assertEqual(repr(sql.SQL("foo")), "SQL('foo')")
        self.assertEqual(str(sql.SQL("foo")), "SQL('foo')")
        self.assertEqual(sql.SQL("foo").as_string(self.conn), "foo")

def test_eq(self):
        self.assertTrue(sql.SQL('foo') == sql.SQL('foo'))
        self.assertTrue(sql.SQL('foo') != sql.SQL('bar'))
        self.assertTrue(sql.SQL('foo') != 'foo')
        self.assertTrue(sql.SQL('foo') != sql.Literal('foo'))

def test_sum(self):
        obj = sql.SQL("foo") + sql.SQL("bar")
        self.assertTrue(isinstance(obj, sql.Composed))
        self.assertEqual(obj.as_string(self.conn), "foobar")

def test_multiply(self):
        obj = sql.SQL("foo") * 3
        self.assertTrue(isinstance(obj, sql.Composed))
        self.assertEqual(obj.as_string(self.conn), "foofoofoo")

def test_join(self):
        obj = sql.SQL(", ").join(
            [sql.Identifier('foo'), sql.SQL('bar'), sql.Literal(42)])
        self.assertTrue(isinstance(obj, sql.Composed))
        self.assertEqual(obj.as_string(self.conn), '"foo", bar, 42')

        obj = sql.SQL(", ").join(
            sql.Composed([sql.Identifier('foo'), sql.SQL('bar'), sql.Literal(42)]))
        self.assertTrue(isinstance(obj, sql.Composed))
        self.assertEqual(obj.as_string(self.conn), '"foo", bar, 42')

        obj = sql.SQL(", ").join([])
        self.assertEqual(obj, sql.Composed([]))

def test_class(self):
        self.assertTrue(issubclass(sql.Composed, sql.Composable))

def test_repr(self):
        obj = sql.Composed([sql.Literal("foo"), sql.Identifier("b'ar")])
        self.assertEqual(repr(obj),
            """Composed([Literal('foo'), Identifier("b'ar")])""")
        self.assertEqual(str(obj), repr(obj))

def test_seq(self):
        l = [sql.SQL('foo'), sql.Literal('bar'), sql.Identifier('baz')]
        self.assertEqual(sql.Composed(l).seq, l)

def test_join(self):
        obj = sql.Composed([sql.Literal("foo"), sql.Identifier("b'ar")])
        obj = obj.join(", ")
        self.assertTrue(isinstance(obj, sql.Composed))
        self.assertQuotedEqual(obj.as_string(self.conn), "'foo', \"b'ar\"")

def test_sum(self):
        obj = sql.Composed([sql.SQL("foo ")])
        obj = obj + sql.Literal("bar")
        self.assertTrue(isinstance(obj, sql.Composed))
        self.assertQuotedEqual(obj.as_string(self.conn), "foo 'bar'")

def test_sum_inplace(self):
        obj = sql.Composed([sql.SQL("foo ")])
        obj += sql.Literal("bar")
        self.assertTrue(isinstance(obj, sql.Composed))
        self.assertQuotedEqual(obj.as_string(self.conn), "foo 'bar'")

        obj = sql.Composed([sql.SQL("foo ")])
        obj += sql.Composed([sql.Literal("bar")])
        self.assertTrue(isinstance(obj, sql.Composed))
        self.assertQuotedEqual(obj.as_string(self.conn), "foo 'bar'")

def test_iter(self):
        obj = sql.Composed([sql.SQL("foo"), sql.SQL('bar')])
        it = iter(obj)
        i = next(it)
        self.assertEqual(i, sql.SQL('foo'))
        i = next(it)
        self.assertEqual(i, sql.SQL('bar'))
        self.assertRaises(StopIteration, it.__next__)

def test_class(self):
        self.assertTrue(issubclass(sql.Placeholder, sql.Composable))