[WIP] Test table coverage

I've added a few tests just so you guys can see my progress. I hope to have it fully tested today or tomorrow.
Yes

On Mon, Sep 22, 2014 at 10:17 AM, Brittain Hard <notifications@github.com>
wrote:

> In blaze/expr/tests/test_table.py:
>
> > @@ -204,6 +239,14 @@ def test_join():
> >      assert join(t, s, 'name').on_left == 'name'
> >      assert join(t, s, 'name').on_right == 'name'
> >
> > +    assert join(t, r, ('name', 'amount')).on_left == ['name', 'amount']
> > +    with pytest.raises(TypeError):
> > +        join(t, q, 'name')
> > +    with pytest.raises(ValueError):
> > +        join(t, s, how='upside_down')
> > +
> > +    assert unpack('unpack') == 'unpack'
>
> Are you talking about the 'unpack' part?
>
> —
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> <https://github.com/ContinuumIO/blaze/pull/642/files#r17851145>.
>