Add test for table comment

tests/test_codegen.py

@@ -1284,6 +1284,30 @@ class Simple(Base):
     id = Column(Integer, primary_key=True, comment="this is a 'comment'")
 """
 
+@pytest.mark.skipif(sqlalchemy.__version__ < '1.2', reason='Requires SQLAlchemy 1.2+')
+def test_table_comment(metadata):
+    Table(
+        'simple', metadata,
+        Column('id', INTEGER, primary_key=True),
+        comment="this is a 'comment'"
+    )
+
+    assert generate_code(metadata) == """\
+# coding: utf-8
+from sqlalchemy import Column, Integer
+from sqlalchemy.ext.declarative import declarative_base
+
+Base = declarative_base()
+metadata = Base.metadata
+
+
+class Simple(Base):
+    __tablename__ = 'simple'
+    __table_args__ = {'comment': "this is a 'comment'"}
+
+    id = Column(Integer, primary_key=True)
+"""
+
 
 @pytest.mark.parametrize('metadata', ['mysql'], indirect=['metadata'])
 def test_mysql_timestamp(metadata):