- unit tests have been migrated from unittest to nose.

See README.unittests for information on how to run
the tests.  [ticket:970]

1 files changed, 195 insertions, 0 deletions

diff --git a/test/sql/test_labels.py b/test/sql/test_labels.py
new file mode 100644
index 000000000..b946b0ae9
--- /dev/null
+++ b/test/sql/test_labels.py
@@ -0,0 +1,195 @@
+from sqlalchemy.test.testing import assert_raises, assert_raises_message
+from sqlalchemy import *
+from sqlalchemy import exc as exceptions
+from sqlalchemy.test import *
+from sqlalchemy.engine import default
+
+IDENT_LENGTH = 29
+
+class LabelTypeTest(TestBase):
+    def test_type(self):
+        m = MetaData()
+        t = Table('sometable', m,
+            Column('col1', Integer),
+            Column('col2', Float))
+        assert isinstance(t.c.col1.label('hi').type, Integer)
+        assert isinstance(select([t.c.col2]).as_scalar().label('lala').type, Float)
+
+class LongLabelsTest(TestBase, AssertsCompiledSQL):
+    @classmethod
+    def setup_class(cls):
+        global metadata, table1, table2, maxlen
+        metadata = MetaData(testing.db)
+        table1 = Table("some_large_named_table", metadata,
+            Column("this_is_the_primarykey_column", Integer, Sequence("this_is_some_large_seq"), primary_key=True),
+            Column("this_is_the_data_column", String(30))
+            )
+
+        table2 = Table("table_with_exactly_29_characs", metadata,
+            Column("this_is_the_primarykey_column", Integer, Sequence("some_seq"), primary_key=True),
+            Column("this_is_the_data_column", String(30))
+            )
+
+        metadata.create_all()
+
+        maxlen = testing.db.dialect.max_identifier_length
+        testing.db.dialect.max_identifier_length = IDENT_LENGTH
+
+    def teardown(self):
+        table1.delete().execute()
+
+    @classmethod
+    def teardown_class(cls):
+        metadata.drop_all()
+        testing.db.dialect.max_identifier_length = maxlen
+
+    def test_too_long_name_disallowed(self):
+        m = MetaData(testing.db)
+        t1 = Table("this_name_is_too_long_for_what_were_doing_in_this_test", m, Column('foo', Integer))
+        assert_raises(exceptions.IdentifierError, m.create_all)
+        assert_raises(exceptions.IdentifierError, m.drop_all)
+        assert_raises(exceptions.IdentifierError, t1.create)
+        assert_raises(exceptions.IdentifierError, t1.drop)
+        
+    def test_result(self):
+        table1.insert().execute(**{"this_is_the_primarykey_column":1, "this_is_the_data_column":"data1"})
+        table1.insert().execute(**{"this_is_the_primarykey_column":2, "this_is_the_data_column":"data2"})
+        table1.insert().execute(**{"this_is_the_primarykey_column":3, "this_is_the_data_column":"data3"})
+        table1.insert().execute(**{"this_is_the_primarykey_column":4, "this_is_the_data_column":"data4"})
+
+        s = table1.select(use_labels=True, order_by=[table1.c.this_is_the_primarykey_column])
+        r = s.execute()
+        result = []
+        for row in r:
+            result.append((row[table1.c.this_is_the_primarykey_column], row[table1.c.this_is_the_data_column]))
+        assert result == [
+            (1, "data1"),
+            (2, "data2"),
+            (3, "data3"),
+            (4, "data4"),
+        ], repr(result)
+
+        # some dialects such as oracle (and possibly ms-sql in a future version)
+        # generate a subquery for limits/offsets.
+        # ensure that the generated result map corresponds to the selected table, not
+        # the select query
+        r = s.limit(2).execute()
+        result = []
+        for row in r:
+            result.append((row[table1.c.this_is_the_primarykey_column], row[table1.c.this_is_the_data_column]))
+        assert result == [
+            (1, "data1"),
+            (2, "data2"),
+        ], repr(result)
+  
+        r = s.limit(2).offset(1).execute()
+        result = []
+        for row in r:
+            result.append((row[table1.c.this_is_the_primarykey_column], row[table1.c.this_is_the_data_column]))
+        assert result == [
+            (2, "data2"),
+            (3, "data3"),
+        ], repr(result)
+
+    def test_table_alias_names(self):
+        self.assert_compile(
+            table2.alias().select(),
+            "SELECT table_with_exactly_29_c_1.this_is_the_primarykey_column, table_with_exactly_29_c_1.this_is_the_data_column FROM table_with_exactly_29_characs AS table_with_exactly_29_c_1"
+        )
+
+        ta = table2.alias()
+        dialect = default.DefaultDialect()
+        dialect.max_identifier_length = IDENT_LENGTH
+        self.assert_compile(
+            select([table1, ta]).select_from(table1.join(ta, table1.c.this_is_the_data_column==ta.c.this_is_the_data_column)).\
+                        where(ta.c.this_is_the_data_column=='data3'),
+                        
+            "SELECT some_large_named_table.this_is_the_primarykey_column, some_large_named_table.this_is_the_data_column, "
+            "table_with_exactly_29_c_1.this_is_the_primarykey_column, table_with_exactly_29_c_1.this_is_the_data_column FROM "
+            "some_large_named_table JOIN table_with_exactly_29_characs AS table_with_exactly_29_c_1 ON "
+            "some_large_named_table.this_is_the_data_column = table_with_exactly_29_c_1.this_is_the_data_column "
+            "WHERE table_with_exactly_29_c_1.this_is_the_data_column = :this_is_the_data_column_1",
+            dialect=dialect
+        )
+        
+        table2.insert().execute(
+            {"this_is_the_primarykey_column":1, "this_is_the_data_column":"data1"},
+            {"this_is_the_primarykey_column":2, "this_is_the_data_column":"data2"},
+            {"this_is_the_primarykey_column":3, "this_is_the_data_column":"data3"},
+            {"this_is_the_primarykey_column":4, "this_is_the_data_column":"data4"},
+        )
+        
+        r = table2.alias().select().execute()
+        assert r.fetchall() == [(x, "data%d" % x) for x in range(1, 5)]
+        
+    def test_colbinds(self):
+        table1.insert().execute(**{"this_is_the_primarykey_column":1, "this_is_the_data_column":"data1"})
+        table1.insert().execute(**{"this_is_the_primarykey_column":2, "this_is_the_data_column":"data2"})
+        table1.insert().execute(**{"this_is_the_primarykey_column":3, "this_is_the_data_column":"data3"})
+        table1.insert().execute(**{"this_is_the_primarykey_column":4, "this_is_the_data_column":"data4"})
+
+        r = table1.select(table1.c.this_is_the_primarykey_column == 4).execute()
+        assert r.fetchall() == [(4, "data4")]
+
+        r = table1.select(or_(
+            table1.c.this_is_the_primarykey_column == 4,
+            table1.c.this_is_the_primarykey_column == 2
+        )).execute()
+        assert r.fetchall() == [(2, "data2"), (4, "data4")]
+
+    def test_insert_no_pk(self):
+        table1.insert().execute(**{"this_is_the_data_column":"data1"})
+        table1.insert().execute(**{"this_is_the_data_column":"data2"})
+        table1.insert().execute(**{"this_is_the_data_column":"data3"})
+        table1.insert().execute(**{"this_is_the_data_column":"data4"})
+
+    @testing.requires.subqueries
+    def test_subquery(self):
+        q = table1.select(table1.c.this_is_the_primarykey_column == 4).alias('foo')
+        x = select([q])
+        print x.execute().fetchall()
+
+    @testing.requires.subqueries
+    def test_anon_alias(self):
+        compile_dialect = default.DefaultDialect()
+        compile_dialect.max_identifier_length = IDENT_LENGTH
+
+        q = table1.select(table1.c.this_is_the_primarykey_column == 4).alias()
+        x = select([q], use_labels=True)
+
+        self.assert_compile(x, "SELECT anon_1.this_is_the_primarykey_column AS anon_1_this_is_the_prim_1, anon_1.this_is_the_data_column AS anon_1_this_is_the_data_2 "
+            "FROM (SELECT some_large_named_table.this_is_the_primarykey_column AS this_is_the_primarykey_column, some_large_named_table.this_is_the_data_column AS this_is_the_data_column "
+            "FROM some_large_named_table "
+            "WHERE some_large_named_table.this_is_the_primarykey_column = :this_is_the_primarykey__1) AS anon_1", dialect=compile_dialect)
+
+        print x.execute().fetchall()
+
+    def test_adjustable(self):
+
+        q = table1.select(table1.c.this_is_the_primarykey_column == 4).alias('foo')
+        x = select([q])
+
+        compile_dialect = default.DefaultDialect(label_length=10)
+        self.assert_compile(x, "SELECT foo.this_is_the_primarykey_column, foo.this_is_the_data_column FROM "
+            "(SELECT some_large_named_table.this_is_the_primarykey_column AS this_1, some_large_named_table.this_is_the_data_column "
+            "AS this_2 FROM some_large_named_table WHERE some_large_named_table.this_is_the_primarykey_column = :this_1) AS foo", dialect=compile_dialect)
+
+        compile_dialect = default.DefaultDialect(label_length=4)
+        self.assert_compile(x, "SELECT foo.this_is_the_primarykey_column, foo.this_is_the_data_column FROM "
+            "(SELECT some_large_named_table.this_is_the_primarykey_column AS _1, some_large_named_table.this_is_the_data_column AS _2 "
+            "FROM some_large_named_table WHERE some_large_named_table.this_is_the_primarykey_column = :_1) AS foo", dialect=compile_dialect)
+
+        q = table1.select(table1.c.this_is_the_primarykey_column == 4).alias()
+        x = select([q], use_labels=True)
+
+        compile_dialect = default.DefaultDialect(label_length=10)
+        self.assert_compile(x, "SELECT anon_1.this_is_the_primarykey_column AS anon_1, anon_1.this_is_the_data_column AS anon_2 FROM "
+            "(SELECT some_large_named_table.this_is_the_primarykey_column AS this_3, some_large_named_table.this_is_the_data_column AS this_4 "
+            "FROM some_large_named_table WHERE some_large_named_table.this_is_the_primarykey_column = :this_1) AS anon_1", dialect=compile_dialect)
+
+        compile_dialect = default.DefaultDialect(label_length=4)
+        self.assert_compile(x, "SELECT _1.this_is_the_primarykey_column AS _1, _1.this_is_the_data_column AS _2 FROM "
+            "(SELECT some_large_named_table.this_is_the_primarykey_column AS _3, some_large_named_table.this_is_the_data_column AS _4 "
+            "FROM some_large_named_table WHERE some_large_named_table.this_is_the_primarykey_column = :_1) AS _1", dialect=compile_dialect)
+        
+