"""Tests for paginate"""

import unittest
from urllib import quote
import warnings

from turbogears import config, expose, database
from turbogears.controllers import RootController, url
from turbogears.database import get_engine, metadata, session, mapper
from turbogears.paginate import paginate, sort_ordering, sort_data
from turbogears.testutil import create_request, sqlalchemy_cleanup
from turbojson.jsonify import jsonify

import cherrypy
from sqlalchemy import Table, Column, ForeignKey, Integer, String
from sqlalchemy.orm import relation
try:
    from sqlalchemy.ext.selectresults import SelectResults as SASelectResults
except ImportError: # SQLAlchemy >= 0.5
    SASelectResults = None
from sqlobject import SQLObject, IntCol, StringCol, connectionForURI

query_methods = 'Q QA SR SO SL'.split()
if SASelectResults is None:
    query_methods.remove('SR')

config.update({"sqlalchemy.dburi": "sqlite:///:memory:"})

# sqlalchemy setup
sqlalchemy_cleanup()
get_engine()

# sqlobject setup
database.set_db_uri("sqlite:///:memory:")
__connection__ = hub = database.PackageHub('test_paginate')


class listlike(object):
    """A minimum list-like object that is needed for paginate."""

    def __init__(self, *args):
        self._list = list(*args)

    def __len__(self):
        return len(self._list)

    def __getitem__(self, key):
        return self._list[key]


def test_sort_ordering():
    """Test the sort_ordering auxiliary function."""
    s = []
    sort_ordering(s, 'a')
    assert s == ['a']
    sort_ordering(s, 'a') # descending order
    assert s == ['-a']
    sort_ordering(s, 'b')
    assert s == ['b', '-a']
    sort_ordering(s, 'c')
    assert s == ['c', 'b', '-a']
    sort_ordering(s, 'c') # descending order
    assert s == ['-c', 'b', '-a']
    sort_ordering(s, 'a') # 'a' again... still in descending order
    assert s == ['-a', '-c', 'b']
    sort_ordering(s, 'a') # 'a' again... now in ascending order
    assert s == ['a', '-c', 'b']
    sort_ordering(s, 'd')
    assert s == ['d', 'a', '-c', 'b']
    sort_ordering(s, 'a')
    assert s == ['a', 'd', '-c', 'b']


def test_sort_in_memory():
    """Test sorting in memory only."""
    for access in range(2):
        if access:
            # ordinary attribute access with hashable keys
            class row(object):
                def __init__(self, ab):
                    self.ab = ab
                    self.a, self.b = self.ab = ab
                def __repr__(self):
                    return self.ab
                def __cmp__(self, other):
                    return cmp(self.ab, other.ab)
        else:
            # dictionary access with unhashable keys
            class row(dict):
                def __init__(self, ab):
                    self.ab = ab
                    self['a'], self['b'] = map(list, ab)
                def __repr__(self):
                    return self.ab
                def __cmp__(self, other):
                    return cmp(self.ab, other.ab)
        def make_data(rows):
            return map(row, rows.split())
        ab = make_data('aa ab ba bb')
        aB = make_data('ab aa bb ba')
        Ab = make_data('ba bb aa ab')
        AB = make_data('bb ba ab aa')
        ba = make_data('aa ba ab bb')
        bA = make_data('ba aa bb ab')
        Ba = make_data('ab bb aa ba')
        BA = make_data('bb ab ba aa')
        if access:
            assert not isinstance(ab[0], dict) \
                and getattr(ab[0], 'a', 'b') == 'a'
        else:
            assert isinstance(ab[0], dict) and ab[0].get('a', 'b') == ['a'] \
                and getattr(ab[0], 'a', 'b') == 'b'
        assert sort_data(ab, []) == ab
        assert sort_data(ab, ['b'], False) == ab
        assert sort_data(ab, ['a']) == ab
        assert sort_data(ab, ['a', 'b']) == ab
        assert sort_data(ab, ['a', '-b']) == aB
        assert sort_data(ab, ['b']) == ba
        assert sort_data(ab, ['b', 'a']) == ba
        assert sort_data(ab, ['b', '-a']) == bA
        assert sort_data(ab, ['-a']) == Ab
        assert sort_data(ab, ['-a', 'b']) == Ab
        assert sort_data(ab, ['-a', '-b']) == AB
        assert sort_data(ab, ['-b']) == Ba
        assert sort_data(ab, ['-b', 'a']) == Ba
        assert sort_data(ab, ['-b', '-a']) == BA
        assert sort_data(aB, ['a', 'b']) == ab
        assert sort_data(Ab, ['a', 'b']) == ab
        assert sort_data(AB, ['a', 'b']) == ab
        assert sort_data(ba, ['a', 'b']) == ab
        assert sort_data(bA, ['a', 'b']) == ab
        assert sort_data(Ba, ['a', 'b']) == ab
        assert sort_data(BA, ['a', 'b']) == ab
        assert sort_data(aB, ['b', 'a']) == ba
        assert sort_data(Ab, ['b', 'a']) == ba
        assert sort_data(AB, ['b', 'a']) == ba
        assert sort_data(ba, ['b', 'a']) == ba
        assert sort_data(bA, ['b', 'a']) == ba
        assert sort_data(Ba, ['b', 'a']) == ba
        assert sort_data(BA, ['b', 'a']) == ba
        assert sort_data(aB, ['-a', 'b']) == Ab
        assert sort_data(Ab, ['-a', 'b']) == Ab
        assert sort_data(AB, ['-a', 'b']) == Ab
        assert sort_data(ba, ['-a', 'b']) == Ab
        assert sort_data(bA, ['-a', 'b']) == Ab
        assert sort_data(Ba, ['-a', 'b']) == Ab
        assert sort_data(BA, ['-a', 'b']) == Ab
        assert sort_data(aB, ['b', '-a']) == bA
        assert sort_data(Ab, ['b', '-a']) == bA
        assert sort_data(AB, ['b', '-a']) == bA
        assert sort_data(ba, ['b', '-a']) == bA
        assert sort_data(bA, ['b', '-a']) == bA
        assert sort_data(Ba, ['b', '-a']) == bA
        assert sort_data(BA, ['b', '-a']) == bA


class Spy(object):
    """Helper class to test paginate's instances in cherrypy.request.

    We could use a special template to output paginate's attributes, but
    testing values/types before they are rendered (when possible) is much
    easier.
    """

    def __init__(self, name=None, **expectations):
        self.name = name
        self.expectations = expectations

    def __str__(self):
        if self.name:
            paginate = cherrypy.request.paginates[self.name]
        else:
            paginate = cherrypy.request.paginate
            assert paginate in cherrypy.request.paginates.values()
        for k, v in self.expectations.iteritems():
            if not hasattr(paginate, k):
                return "fail: paginate does not have '%s' attribute" % k
            w = getattr(paginate, k)
            if isinstance(v, xrange):
                v = list(v)
            if isinstance(w, xrange):
                w = list(w)
            if w != v:
                return "fail: expected %s=%r, got %s=%r" % (k, v, k, w)
        return "ok: [paginate %s ]" % \
            " , ".join(["%s=%r" % (k, v) for k, v in paginate.__dict__.items()])

    def assert_ok(body, key, value, raw=False):
        assert "ok: [paginate" in body
        if raw:
            expr = "%s=%s " % (key, value)
        else:
            expr = "%s=%r " % (key, value)
        # some simplejson versions escape forward slashes, so fix this
        body = body.replace('\\/', '/')
        if expr not in body:
            print body
        assert expr in body, "expected %s" % expr
    assert_ok = staticmethod(assert_ok)

[jsonify.when('isinstance(obj, Spy)')]
def jsonify_spy(obj):
    result = str(obj)
    return result


class TestSpy(unittest.TestCase):
    """Never trust a spy"""

    class MyRoot(RootController):

        [expose()]
        [paginate("data")]
        def spy(self):
            data = range(100)
            spy = Spy()
            return dict(data=data, spy=spy)

        [expose()]
        [paginate("data")]
        def spy_correct_expectation(self):
            data = range(100)
            spy = Spy(page_count=10)
            return dict(data=data, spy=spy)

        [expose()]
        [paginate("data")]
        def spy_wrong_expectation(self):
            data = range(100)
            spy = Spy(page_count=9)
            return dict(data=data, spy=spy)

        [expose()]
        [paginate("data")]
        def spy_invalid_expectation(self):
            data = range(100)
            spy = Spy(foobar=10)
            return dict(data=data, spy=spy)


    def setUp(self):
        cherrypy.root = self.MyRoot()

    def test_spy(self):
        create_request('/spy')
        body = cherrypy.response.body[0]
        Spy.assert_ok(body, 'current_page', 1)
        try:
            Spy.assert_ok(body, 'current_page', 2)
            raise Exception("above test should have failed")
        except AssertionError:
            pass

    def test_correct_expectation(self):
        create_request('/spy_correct_expectation')
        body = cherrypy.response.body[0]
        assert "ok: [paginate" in body

    def test_wrong_expectation(self):
        create_request('/spy_wrong_expectation')
        body = cherrypy.response.body[0]
        assert "fail: expected page_count=9, got page_count=10" in body

    def test_invalid_expectation(self):
        create_request('/spy_invalid_expectation')
        body = cherrypy.response.body[0]
        assert "fail: paginate does not have 'foobar' attribute" in body

    def test_raw_expectation(self):
        create_request('/spy_correct_expectation')
        Spy.assert_ok(cherrypy.response.body[0], 'var_name', 'data')
        Spy.assert_ok(cherrypy.response.body[0], 'var_name', "'data'", raw=True)


class TestPagination(unittest.TestCase):
    """Base class for all Paginate TestCases"""

    def setUp(self):
        cherrypy.root = self.MyRoot()

    def request(self, url):
        create_request(url)
        self.body = cherrypy.response.body[0]
        self.status = cherrypy.response.status
        if "fail: " in self.body:
            print self.body
            assert False, "Spy alert! Check body output for details..."


class TestBasicPagination(TestPagination):

    class MyRoot(RootController):

        [expose()]
        [paginate("data", limit=4)]
        def basic(self):
            spy = Spy(var_name='data', pages=xrange(1, 4), limit=4, page_count=3,
                      order=None, ordering=[], row_count=10)
            data = range(10)
            return dict(data=data, spy=spy)

        [expose()]
        [paginate("data", limit=4)]
        def listlike(self):
            spy = Spy(var_name='data', pages=xrange(1, 4), limit=4, page_count=3,
                      order=None, ordering=[], row_count=10)
            data = listlike(range(10))
            return dict(data=data, spy=spy)

        [expose()]
        [paginate("data", limit=4, max_limit=None)]
        def custom_limit(self):
            spy = Spy(var_name='data', order=None, ordering=[], row_count=10)
            data = range(10)
            return dict(data=data, spy=spy)

        [expose()]
        [paginate("data", limit=4, max_limit=7)]
        def max_limit(self):
            spy = Spy(var_name='data', order=None, ordering=[], row_count=10)
            data = range(10)
            return dict(data=data, spy=spy)

        [expose()]
        [paginate("data")]
        def default_max_pages(self):
            spy = Spy(var_name='data', limit=10, page_count=10,
                      order=None, ordering=[], row_count=100)
            data = range(100)
            return dict(data=data, spy=spy)

        [expose()]
        [paginate("data", max_pages=4)]
        def four_max_pages(self):
            spy = Spy(var_name='data', limit=10, page_count=10,
                      order=None, ordering=[], row_count=100)
            data = range(100)
            return dict(data=data, spy=spy)

        [expose()]
        [paginate("data", max_pages=3)]
        def three_max_pages(self):
            spy = Spy(var_name='data', limit=10, page_count=10,
                      order=None, ordering=[], row_count=100)
            data = range(100)
            return dict(data=data, spy=spy)

        [expose()]
        [paginate("data", limit=4, dynamic_limit='foobar')]
        def invalid_dynamic(self):
            data = range(10)
            return dict(data=data)

        [expose()]
        [paginate("data", limit=4, dynamic_limit='foobar', max_limit=None)]
        def dynamic(self):
            spy = Spy(var_name='data', pages=xrange(1, 3), limit=7, page_count=2,
                      order=None, ordering=[], row_count=10)
            data = range(10)
            return dict(data=data, spy=spy, foobar=7)

        [expose()]
        [paginate("bar")]
        [paginate("foo", limit=4)]
        def multiple(self):
            spy_foo = Spy(name='foo', var_name='foo', pages=xrange(1, 6),
                          limit=4, page_count=5, order=None, ordering=[],
                          row_count=20)
            spy_bar = Spy(name='bar', var_name='bar', pages=xrange(1, 4), limit=10,
                          page_count=3, order=None, ordering=[], row_count=26)
            foo = range(20)
            bar = list('ABCDEFGHIJKLMNOPQRSTUVWXYZ') # 26 letters
            return dict(foo=foo, bar=bar, spy_foo=spy_foo, spy_bar=spy_bar)

        [expose()]
        [paginate("data", limit=4, max_limit=None)]
        def empty(self):
            spy = Spy(var_name='data', pages=xrange(1, 1), page_count=0,
                      order=None, ordering=[], row_count=0,
                      current_page=1, first_item=0, last_item=0)
            data = []
            return dict(data=data, spy=spy)


    def test_pagination_old_style(self):
        self.request("/basic")
        assert '"data": [0, 1, 2, 3]' in self.body
        Spy.assert_ok(self.body, 'current_page', 1)
        Spy.assert_ok(self.body, 'first_item', 1)
        Spy.assert_ok(self.body, 'last_item', 4)

        self.request("/basic?tg_paginate_no=1")
        assert '"data": [0, 1, 2, 3]' in self.body
        Spy.assert_ok(self.body, 'current_page', 1)
        Spy.assert_ok(self.body, 'first_item', 1)
        Spy.assert_ok(self.body, 'last_item', 4)

        self.request("/basic?tg_paginate_no=2")
        assert '"data": [4, 5, 6, 7]' in self.body
        Spy.assert_ok(self.body, 'current_page', 2)
        Spy.assert_ok(self.body, 'first_item', 5)
        Spy.assert_ok(self.body, 'last_item', 8)

        self.request("/basic?tg_paginate_no=3")
        assert '"data": [8, 9]' in self.body
        Spy.assert_ok(self.body, 'current_page', 3)
        Spy.assert_ok(self.body, 'first_item', 9)
        Spy.assert_ok(self.body, 'last_item', 10)

    def test_pagination_new_style(self):
        self.request("/basic?data_tgp_no=1")
        assert '"data": [0, 1, 2, 3]' in self.body
        Spy.assert_ok(self.body, 'current_page', 1)
        Spy.assert_ok(self.body, 'first_item', 1)
        Spy.assert_ok(self.body, 'last_item', 4)

        self.request("/basic?data_tgp_no=2")
        assert '"data": [4, 5, 6, 7]' in self.body
        Spy.assert_ok(self.body, 'current_page', 2)
        Spy.assert_ok(self.body, 'first_item', 5)
        Spy.assert_ok(self.body, 'last_item', 8)

        self.request("/basic?data_tgp_no=3")
        assert '"data": [8, 9]' in self.body
        Spy.assert_ok(self.body, 'current_page', 3)
        Spy.assert_ok(self.body, 'first_item', 9)
        Spy.assert_ok(self.body, 'last_item', 10)

    def test_pagination_listlike(self):
        self.request("/listlike?data_tgp_no=2")
        assert '"data": [4, 5, 6, 7]' in self.body
        Spy.assert_ok(self.body, 'current_page', 2)
        Spy.assert_ok(self.body, 'first_item', 5)
        Spy.assert_ok(self.body, 'last_item', 8)

    def test_limit_override(self):
        # can't override limit (old style)
        self.request('/basic?tg_paginate_limit=2')
        assert '"data": [0, 1, 2, 3]' in self.body

        # can't override limit (new style)
        self.request("/basic?data_tgp_limit=2")
        assert '"data": [0, 1, 2, 3]' in self.body

        # can't override limit with upper bound
        self.request("/max_limit?data_tgp_limit=9")
        assert '"data": [0, 1, 2, 3, 4, 5, 6]' in self.body
        Spy.assert_ok(self.body, 'page_count', 2)
        Spy.assert_ok(self.body, 'limit', 7)
        Spy.assert_ok(self.body, 'pages', xrange(1, 3))

        # can override limit (old style)
        self.request('/custom_limit?tg_paginate_limit=2')
        assert '"data": [0, 1]' in self.body
        Spy.assert_ok(self.body, 'page_count', 5)
        Spy.assert_ok(self.body, 'limit', 2)
        Spy.assert_ok(self.body, 'pages', xrange(1, 6))

        # can override limit (new style)
        self.request("/custom_limit?data_tgp_limit=2")
        assert '"data": [0, 1]' in self.body
        Spy.assert_ok(self.body, 'page_count', 5)
        Spy.assert_ok(self.body, 'limit', 2)
        Spy.assert_ok(self.body, 'pages', xrange(1, 6))

        # can override limit with upper bound
        self.request("/max_limit?data_tgp_limit=5")
        assert '"data": [0, 1, 2, 3, 4]' in self.body
        Spy.assert_ok(self.body, 'page_count', 2)
        Spy.assert_ok(self.body, 'limit', 5)
        Spy.assert_ok(self.body, 'pages', xrange(1, 3))

    def test_max_pages(self):
        self.request("/default_max_pages")
        assert '"data": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]' in self.body
        Spy.assert_ok(self.body, 'pages', xrange(1, 6))

        self.request("/default_max_pages?data_tgp_no=5")
        assert '"data": [40, 41, 42, 43, 44, 45, 46, 47, 48, 49]' in self.body
        Spy.assert_ok(self.body, 'pages', xrange(3, 8))

        self.request("/three_max_pages")
        assert '"data": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]' in self.body
        Spy.assert_ok(self.body, 'pages', xrange(1, 4))

        self.request("/three_max_pages?data_tgp_no=5")
        assert '"data": [40, 41, 42, 43, 44, 45, 46, 47, 48, 49]' in self.body
        Spy.assert_ok(self.body, 'pages', xrange(4, 7))

        # even 'max pages'
        self.request("/four_max_pages")
        assert '"data": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]' in self.body
        Spy.assert_ok(self.body, 'pages', xrange(1, 5))

        self.request("/four_max_pages?data_tgp_no=5")
        assert '"data": [40, 41, 42, 43, 44, 45, 46, 47, 48, 49]' in self.body
        Spy.assert_ok(self.body, 'pages', xrange(4, 8))

    def test_strict_parameters(self):
        config.update({'tg.strict_parameters': True})
        try:
            # old style
            self.request("/basic?tg_paginate_no=2")
            assert self.status.startswith('200')
            assert '"data": [4, 5, 6, 7]' in self.body
            Spy.assert_ok(self.body, 'current_page', 2)
            self.request('/custom_limit?tg_paginate_limit=2')
            assert self.status.startswith('200')
            assert '"data": [0, 1]' in self.body
            Spy.assert_ok(self.body, 'limit', 2)
            self.request("/default_max_pages?tg_paginate_no=5")
            assert self.status.startswith('200')
            assert '"data": [40, 41, 42, ' in self.body
            Spy.assert_ok(self.body, 'pages', xrange(3, 8))
            self.request("/basic?tg_paginate_rubbish=2")
            assert self.status.startswith('500')
            assert ("basic() got an unexpected keyword argument"
                " 'tg_paginate_rubbish'") in self.body
            # new style
            self.request("/basic?data_tgp_no=2")
            assert self.status.startswith('200')
            assert '"data": [4, 5, 6, 7]' in self.body
            Spy.assert_ok(self.body, 'current_page', 2)
            self.request('/custom_limit?data_tgp_limit=2')
            assert self.status.startswith('200')
            assert '"data": [0, 1]' in self.body
            Spy.assert_ok(self.body, 'limit', 2)
            self.request("/default_max_pages?data_tgp_no=5")
            assert self.status.startswith('200')
            assert '"data": [40, 41, 42, ' in self.body
            Spy.assert_ok(self.body, 'pages', xrange(3, 8))
            self.request("/basic?data_tgp_rubbish=2")
            assert self.status.startswith('500')
            assert ("basic() got an unexpected keyword argument"
                " 'data_tgp_rubbish'") in self.body
        finally:
            config.update({'tg.strict_parameters': False})

    def test_invalid_dynamic_limit(self):
        self.request("/invalid_dynamic")
        assert self.status.startswith("500")
        assert 'paginate: dynamic_limit (foobar) not found in output dict' in self.body

    def test_dynamic_limit(self):
        self.request("/dynamic")
        assert '"data": [0, 1, 2, 3, 4, 5, 6]' in self.body

        self.request('/dynamic?tg_paginate_limit=2')
        assert '"data": [0, 1, 2, 3, 4, 5, 6]' in self.body

    def test_multiple(self):
        self.request("/multiple")
        assert '"foo": [0, 1, 2, 3]' in self.body
        assert '"bar": ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J"]' in self.body

        self.request("/multiple?foo_tgp_no=3")
        assert '"foo": [8, 9, 10, 11]' in self.body
        assert '"bar": ["A", "B", "C", "D", "E", "F", "G", "H", "I", "J"]' in self.body

        self.request("/multiple?bar_tgp_no=2")
        assert '"foo": [0, 1, 2, 3]' in self.body
        assert '"bar": ["K", "L", "M", "N", "O", "P", "Q", "R", "S", "T"]' in self.body

        self.request("/multiple?foo_tgp_no=2&bar_tgp_no=3")
        assert '"foo": [4, 5, 6, 7]' in self.body
        assert '"bar": ["U", "V", "W", "X", "Y", "Z"]' in self.body

    def test_out_of_bound_pages(self):
        for number in range(-3,1):
            self.request("/basic?tg_paginate_no=%s" % number)
            assert '"data": [0, 1, 2, 3]' in self.body
            Spy.assert_ok(self.body, 'current_page', 1)
            Spy.assert_ok(self.body, 'first_item', 1)
            Spy.assert_ok(self.body, 'last_item', 4)

        for number in range(4, 7):
            self.request("/basic?tg_paginate_no=%s" % number)
            assert '"data": [8, 9]' in self.body
            Spy.assert_ok(self.body, 'current_page', 3)
            Spy.assert_ok(self.body, 'first_item', 9)
            Spy.assert_ok(self.body, 'last_item', 10)

    def test_last_page(self):
        self.request("/basic?tg_paginate_no=last")
        assert '"data": [8, 9]' in self.body
        Spy.assert_ok(self.body, 'current_page', 3)
        Spy.assert_ok(self.body, 'first_item', 9)
        Spy.assert_ok(self.body, 'last_item', 10)

    def test_href(self):
        self.request("/basic?data_tgp_no=0") # out of bound
        Spy.assert_ok(self.body, 'current_page', 1)
        Spy.assert_ok(self.body, 'href_first', None)
        Spy.assert_ok(self.body, 'href_prev', None)
        Spy.assert_ok(self.body, 'href_next', r"'/basic?data_tgp_no=2&data_tgp_limit=4'", raw=True)
        Spy.assert_ok(self.body, 'href_last', r"'/basic?data_tgp_no=last&data_tgp_limit=4'", raw=True)

        self.request("/basic?data_tgp_no=1")
        Spy.assert_ok(self.body, 'current_page', 1)
        Spy.assert_ok(self.body, 'href_first', None)
        Spy.assert_ok(self.body, 'href_prev', None)
        Spy.assert_ok(self.body, 'href_next', r"'/basic?data_tgp_no=2&data_tgp_limit=4'", raw=True)
        Spy.assert_ok(self.body, 'href_last', r"'/basic?data_tgp_no=last&data_tgp_limit=4'", raw=True)

        self.request("/basic?data_tgp_no=2")
        Spy.assert_ok(self.body, 'current_page', 2)
        Spy.assert_ok(self.body, 'href_first', r"'/basic?data_tgp_no=1&data_tgp_limit=4'", raw=True)
        Spy.assert_ok(self.body, 'href_prev', r"'/basic?data_tgp_no=1&data_tgp_limit=4'", raw=True)
        Spy.assert_ok(self.body, 'href_next', r"'/basic?data_tgp_no=3&data_tgp_limit=4'", raw=True)
        Spy.assert_ok(self.body, 'href_last', r"'/basic?data_tgp_no=last&data_tgp_limit=4'", raw=True)

        self.request("/basic?data_tgp_no=3")
        Spy.assert_ok(self.body, 'current_page', 3)
        Spy.assert_ok(self.body, 'href_first', r"'/basic?data_tgp_no=1&data_tgp_limit=4'", raw=True)
        Spy.assert_ok(self.body, 'href_prev', r"'/basic?data_tgp_no=2&data_tgp_limit=4'", raw=True)
        Spy.assert_ok(self.body, 'href_next', None)
        Spy.assert_ok(self.body, 'href_last', None)

        self.request("/basic?data_tgp_no=4") # out of bound!
        Spy.assert_ok(self.body, 'current_page', 3)
        Spy.assert_ok(self.body, 'href_first', r"'/basic?data_tgp_no=1&data_tgp_limit=4'", raw=True)
        Spy.assert_ok(self.body, 'href_prev', r"'/basic?data_tgp_no=2&data_tgp_limit=4'", raw=True)
        Spy.assert_ok(self.body, 'href_next', None)
        Spy.assert_ok(self.body, 'href_last', None)

        # empty data
        self.request("/empty")
        Spy.assert_ok(self.body, 'current_page', 1)
        Spy.assert_ok(self.body, 'href_first', None)
        Spy.assert_ok(self.body, 'href_prev', None)
        Spy.assert_ok(self.body, 'href_next', None)
        Spy.assert_ok(self.body, 'href_last', None)

    def test_with_webpath(self):
        config.update({'server.webpath': '/web/path'})
        try:
            self.request("/web/path/basic?data_tgp_no=2")
            Spy.assert_ok(self.body, 'current_page', 2)
            Spy.assert_ok(self.body, 'href_first',
                r"'/web/path/basic?data_tgp_no=1&data_tgp_limit=4'", raw=True)
            Spy.assert_ok(self.body, 'href_prev',
                r"'/web/path/basic?data_tgp_no=1&data_tgp_limit=4'", raw=True)
            Spy.assert_ok(self.body, 'href_next',
                r"'/web/path/basic?data_tgp_no=3&data_tgp_limit=4'", raw=True)
            Spy.assert_ok(self.body, 'href_last',
                r"'/web/path/basic?data_tgp_no=last&data_tgp_limit=4'", raw=True)
        finally:
            config.update({'server.webpath': ''})

    def test_empty_data(self):
        self.request("/empty")
        assert '"data": []' in self.body
        Spy.assert_ok(self.body, 'limit', 4)

    def test_zero_limit(self):
        self.request("/custom_limit?data_tgp_limit=0")
        assert '"data": [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]' in self.body
        Spy.assert_ok(self.body, 'page_count', 1)
        Spy.assert_ok(self.body, 'limit', 10)
        Spy.assert_ok(self.body, 'pages', xrange(1, 2))

    def test_empty_data_zero_limit(self):
        self.request("/empty?data_tgp_limit=0")
        assert '"data": []' in self.body
        Spy.assert_ok(self.body, 'page_count', 0)
        Spy.assert_ok(self.body, 'limit', 1)


#
# Test SQLAlchemy & SQLObject
#

class Occupation(object):
    pass

class User(object):
    pass

class Address(object):
    def __repr__(self):
        # using "[...]" instead of "<...>" avoids rendering "&lt;"
        return "[Address %r]" % self.id

class SOAddress(SQLObject):
    id = IntCol(),
    user_id = IntCol()
    street = StringCol()
    city = StringCol()

    def __repr__(self):
        # using "[...]" instead of "<...>" avoids rendering "&lt;"
        return "[Address %r]" % self.id

def create_tables():
    """Create tables filled with test data."""

    occupations_table = Table('occupations', metadata,
        Column('id', Integer, primary_key=True),
        Column('name', String(20)))
    users_table = Table('users', metadata,
        Column('id', Integer, primary_key=True),
        Column('name', String(20)),
        Column('occupation_id', Integer, ForeignKey("occupations.id")))
    addresses_table = Table('addresses', metadata,
        Column('id', Integer, primary_key=True),
        Column('user_id', Integer, ForeignKey("users.id")),
        Column('street', String(50)),
        Column('city', String(40)))

    mapper(Occupation, occupations_table)
    mapper(User, users_table, properties={
        'occupation' : relation(Occupation, lazy=False),
        'addresses': relation(Address, backref='user', lazy=False)})
    mapper(Address, addresses_table)

    metadata.create_all()

    occupations = (
        {'id': 1, 'name': 'Doctor'},
        {'id': 2, 'name': 'Actor'},
        {'id': 3, 'name': 'Programmer'})
    users = (
        {'id': 1, 'name': 'Smith', 'occupation_id': 1},
        {'id': 2, 'name': 'John', 'occupation_id': 2},
        {'id': 3, 'name': 'Fred', 'occupation_id': 2},
        {'id': 4, 'name': 'Albert', 'occupation_id': 3},
        {'id': 5, 'name': 'Nicole', 'occupation_id': None},
        {'id': 6, 'name': 'Sarah', 'occupation_id': None},
        {'id': 7, 'name': 'Walter', 'occupation_id': 1},
        {'id': 8, 'name': 'Bush', 'occupation_id': None});
    addresses = (
        {'id': 1, 'user_id': None, 'street': 'street P', 'city': 'city X'},
        {'id': 2, 'user_id': 2, 'street': 'street B', 'city': 'city Z'},
        {'id': 3, 'user_id': 4, 'street': 'street C', 'city': 'city X'},
        {'id': 4, 'user_id': 1, 'street': 'street D', 'city': 'city Y'},
        {'id': 5, 'user_id': None, 'street': 'street E', 'city': 'city Z'},
        {'id': 6, 'user_id': 1, 'street': 'street F', 'city': 'city Z'},
        {'id': 7, 'user_id': 3, 'street': 'street G', 'city': 'city Y'},
        {'id': 8, 'user_id': 7, 'street': 'street H', 'city': 'city Y'},
        {'id': 9, 'user_id': 1, 'street': 'street I', 'city': 'city X'},
        {'id': 10, 'user_id': 6, 'street': 'street J', 'city': 'city X'},
        {'id': 11, 'user_id': 3, 'street': 'street K', 'city': 'city Z'},
        {'id': 12, 'user_id': 2, 'street': 'street L', 'city': 'city X'},
        {'id': 13, 'user_id': 8, 'street': 'street M', 'city': 'city X'},
        {'id': 14, 'user_id': 5, 'street': 'street N', 'city': 'city Y'},
        {'id': 15, 'user_id': 1, 'street': 'street O', 'city': 'city Y'},
        {'id': 16, 'user_id': 3, 'street': 'street A', 'city': 'city X'});

    metadata.bind.execute(occupations_table.insert(), occupations)
    metadata.bind.execute(users_table.insert(), users)
    metadata.bind.execute(addresses_table.insert(), addresses)

    SOAddress.createTable()

    # SQLObject tests will need only "addresses"
    for kw in addresses:
        print SOAddress(**kw)

def drop_tables():
    metadata.drop_all()


class TestDatabasePagination(TestPagination):

    class MyRoot(RootController):

        def __common(self, method=None):
            if method == 'Q':
                data = session.query(Address)
            elif method == 'QA':
                data = session.query(Address).all()
            elif method == 'SR':
                data = SASelectResults(session.query(Address))
            elif method == 'SO':
                data = SOAddress.select()
            elif method == 'SL':
                data = list(SOAddress.select())
            else:
                raise ValueError("Invalid method %r" % method)

            spy = Spy(var_name='data', pages=xrange(1, 3), limit=10, page_count=2,
                      order=None, row_count=16)
            return dict(data=data, spy=spy)

        # default_order = basestring
        basic1 = paginate("data", default_order="id")(__common)
        basic1 = expose("turbogears.tests.paginate")(basic1)

        # default_order = list
        basic2 = paginate("data", default_order=["id"])(__common)
        basic2 = expose("turbogears.tests.paginate")(basic2)

        # default_order = basestring with default_reversed (deprecated)
        warnings.filterwarnings('ignore',
            'default_reversed is deprecated', DeprecationWarning)
        reversed1 = paginate("data", default_order="id", default_reversed=True)(__common)
        reversed1 = expose("turbogears.tests.paginate")(reversed1)

        # default_order = basestring
        reversed2 = paginate("data", default_order="-id")(__common)
        reversed2 = expose("turbogears.tests.paginate")(reversed2)

        # default_order = list with default_reversed (WRONG!)
        wrong_reversed = paginate("data", default_order=["id"], default_reversed=True)(__common)
        wrong_reversed = expose("turbogears.tests.paginate")(wrong_reversed)

        # default_order = list
        reversed3 = paginate("data", default_order=["-id"])(__common)
        reversed3 = expose("turbogears.tests.paginate")(reversed3)

        # +/+
        default_compound_ordering1 = paginate("data", default_order=["city", "street"])(__common)
        default_compound_ordering1 = expose("turbogears.tests.paginate")(default_compound_ordering1)

        # +/-
        default_compound_ordering2 = paginate("data", default_order=["city", "-street"])(__common)
        default_compound_ordering2 = expose("turbogears.tests.paginate")(default_compound_ordering2)

        # -/+
        default_compound_ordering3 = paginate("data", default_order=["-city", "street"])(__common)
        default_compound_ordering3 = expose("turbogears.tests.paginate")(default_compound_ordering3)

        # -/-
        default_compound_ordering4 = paginate("data", default_order=["-city", "-street"])(__common)
        default_compound_ordering4 = expose("turbogears.tests.paginate")(default_compound_ordering4)

        [expose("turbogears.tests.paginate")]
        [paginate("data", default_order="id")]
        def related(self):
            # only SA Query
            data = session.query(Address).outerjoin(['user', 'occupation'])

            spy = Spy(var_name='data', pages=xrange(1, 3), limit=10, page_count=2,
                      order=None, row_count=16)
            return dict(data=data, spy=spy)

        [expose("turbogears.tests.paginate")]
        [paginate("data", default_order="id", limit=0)]
        def zero_limit(self, method=None):
            if method == 'Q':
                data = session.query(Address)
            elif method == 'QA':
                data = session.query(Address).all()
            elif method == 'SR':
                data = SASelectResults(session.query(Address))
            elif method == 'SO':
                data = SOAddress.select()
            elif method == 'SL':
                data = list(SOAddress.select())
            else:
                raise Exception("Invalid method")

            spy = Spy(var_name='data', pages=xrange(1, 2), limit=16, page_count=1,
                      order=None, row_count=16)
            return dict(data=data, spy=spy)

        [expose("turbogears.tests.paginate")]
        [paginate("data", default_order="id")]
        def empty_with_groupby(self):
            data = session.query(Address)
            try:
                data = data.filter(Address.c.id < 0).group_by(Address.c.user_id)
            except AttributeError: # SQLAlchemy >= 0.5
                data = data.filter(Address.id < 0).group_by(Address.user_id)
            spy = Spy(var_name='data', pages=xrange(1, 1), limit=10, page_count=0,
                      order=None, row_count=0)
            return dict(data=data, spy=spy)


    def assert_order(self, *args):
        expr = 'data="%s"' % ''.join(['[Address %r]' % x for x in args])
        if expr not in self.body:
            print self.body
        assert expr in self.body, "expected %s" % expr

    def test_basic(self):
        for test in "basic1", "basic2":
            for method in query_methods:
                self.request("/%s?method=%s" % (test, method))
                self.assert_order(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)
                Spy.assert_ok(self.body, 'current_page', 1)
                Spy.assert_ok(self.body, 'first_item', 1)
                Spy.assert_ok(self.body, 'last_item', 10)
                Spy.assert_ok(self.body, 'ordering', ['id'])

                # old style
                self.request("/%s?method=%s&tg_paginate_no=2" % (test, method))
                self.assert_order(11, 12, 13, 14, 15, 16)
                Spy.assert_ok(self.body, 'current_page', 2)
                Spy.assert_ok(self.body, 'first_item', 11)
                Spy.assert_ok(self.body, 'last_item', 16)
                Spy.assert_ok(self.body, 'ordering', ['id'])

                # new style
                self.request("/%s?method=%s&data_tgp_no=2" % (test, method))
                self.assert_order(11, 12, 13, 14, 15, 16)
                Spy.assert_ok(self.body, 'current_page', 2)
                Spy.assert_ok(self.body, 'first_item', 11)
                Spy.assert_ok(self.body, 'last_item', 16)
                Spy.assert_ok(self.body, 'ordering', ['id'])

    def test_ordering(self):
        for test in "basic1", "basic2":
            for method in query_methods:
                self.request("/%s?method=%s&tg_paginate_ordering=%s" % \
                    (test, method, 'street'))
                self.assert_order(16, 2, 3, 4, 5, 6, 7, 8, 9, 10)
                Spy.assert_ok(self.body, 'current_page', 1)
                Spy.assert_ok(self.body, 'first_item', 1)
                Spy.assert_ok(self.body, 'last_item', 10)
                Spy.assert_ok(self.body, 'ordering', ['street'])

                self.request("/%s?method=%s&tg_paginate_no=2&tg_paginate_ordering=%s" % \
                    (test, method, 'street'))
                self.assert_order(11, 12, 13, 14, 15, 1)
                Spy.assert_ok(self.body, 'current_page', 2)
                Spy.assert_ok(self.body, 'first_item', 11)
                Spy.assert_ok(self.body, 'last_item', 16)
                Spy.assert_ok(self.body, 'ordering', ['street'])

    def test_strict_parameters(self):
        config.update({'tg.strict_parameters': True})
        try:
            # old style
            self.request("/basic1?method=Q&tg_paginate_ordering=street")
            self.assert_order(16, 2, 3, 4, 5, 6, 7, 8, 9, 10)
            Spy.assert_ok(self.body, 'ordering', ['street'])
            # new style
            self.request("/basic1?method=Q&data_tgp_ordering=street")
            assert self.status.startswith('200')
            self.assert_order(16, 2, 3, 4, 5, 6, 7, 8, 9, 10)
            Spy.assert_ok(self.body, 'ordering', ['street'])
        finally:
            config.update({'tg.strict_parameters': False})

    def test_default_reversed(self):
        for test in "reversed1", "reversed2", "reversed3":
            for method in query_methods:
                self.request("/%s?method=%s" % (test, method))
                self.assert_order(16, 15, 14, 13, 12, 11, 10, 9, 8, 7)
                Spy.assert_ok(self.body, 'current_page', 1)
                Spy.assert_ok(self.body, 'first_item', 1)
                Spy.assert_ok(self.body, 'last_item', 10)
                Spy.assert_ok(self.body, 'ordering', ['-id'])

                self.request("/%s?method=%s&data_tgp_no=2" % (test, method))
                self.assert_order(6, 5, 4, 3, 2, 1)
                Spy.assert_ok(self.body, 'current_page', 2)
                Spy.assert_ok(self.body, 'first_item', 11)
                Spy.assert_ok(self.body, 'last_item', 16)
                Spy.assert_ok(self.body, 'ordering', ['-id'])

    def test_invalid_default_reversed(self):
        for method in query_methods:
            self.request("/wrong_reversed?method=%s" % method)
            assert self.status.startswith("500")
            assert ('paginate: default_reversed (deprecated) only allowed'
                ' when default_order is a basestring') in self.body

    def test_reverse_ordering(self):
        for test in "basic1", "basic2":
            for method in query_methods:
                self.request("/%s?method=%s&tg_paginate_ordering=%s"
                    % (test, method, '-street'))
                self.assert_order(1, 15, 14, 13, 12, 11, 10, 9, 8, 7)
                Spy.assert_ok(self.body, 'ordering', ['-street'])

                self.request("/%s?method=%s&tg_paginate_no=2&tg_paginate_ordering=%s"
                    % (test, method, '-street'))
                self.assert_order(6, 5, 4, 3, 2, 16)
                Spy.assert_ok(self.body, 'ordering', ['-street'])

    def test_compound_ordering(self):
        for test in "basic1", "basic2":
            for method in query_methods:
                # +/+
                self.request("/%s?method=%s&tg_paginate_ordering=%s"
                    % (test, method, quote('city,street')))
                self.assert_order(16, 3, 9, 10, 12, 13, 1, 4, 7, 8)
                Spy.assert_ok(self.body, 'ordering', ['city', 'street'])

                self.request("/%s?method=%s&tg_paginate_no=2&tg_paginate_ordering=%s"
                    % (test, method, quote('city,street')))
                self.assert_order(14, 15, 2, 5, 6, 11)
                Spy.assert_ok(self.body, 'ordering', ['city', 'street'])

                # +/-
                self.request("/%s?method=%s&tg_paginate_ordering=%s"
                    % (test, method, quote('city,-street')))
                self.assert_order(1, 13, 12, 10, 9, 3, 16, 15, 14, 8)
                Spy.assert_ok(self.body, 'ordering', ['city', '-street'])

                self.request("/%s?method=%s&tg_paginate_no=2&tg_paginate_ordering=%s"
                    % (test, method, quote('city,-street')))
                self.assert_order(7, 4, 11, 6, 5, 2)
                Spy.assert_ok(self.body, 'ordering', ['city', '-street'])

                # -/+
                self.request("/%s?method=%s&tg_paginate_ordering=%s"
                    % (test, method, quote('-city,street')))
                self.assert_order(2, 5, 6, 11, 4, 7, 8, 14, 15, 16)
                Spy.assert_ok(self.body, 'ordering', ['-city', 'street'])

                self.request("/%s?method=%s&tg_paginate_no=2&tg_paginate_ordering=%s"
                    % (test, method, quote('-city,street')))
                self.assert_order(3, 9, 10, 12, 13, 1)
                Spy.assert_ok(self.body, 'ordering', ['-city', 'street'])

                # -/-
                self.request("/%s?method=%s&tg_paginate_ordering=%s"
                    % (test, method, quote('-city,-street')))
                self.assert_order(11, 6, 5, 2, 15, 14, 8, 7, 4, 1)
                Spy.assert_ok(self.body, 'ordering', ['-city', '-street'])

                self.request("/%s?method=%s&tg_paginate_no=2&tg_paginate_ordering=%s"
                    % (test, method, quote('-city,-street')))
                self.assert_order(13, 12, 10, 9, 3, 16)
                Spy.assert_ok(self.body, 'ordering', ['-city', '-street'])

    def test_default_compound_ordering_1(self):
        # +/+
        for method in query_methods:
            self.request("/default_compound_ordering1?method=%s" % method)
            self.assert_order(16, 3, 9, 10, 12, 13, 1, 4, 7, 8)
            Spy.assert_ok(self.body, 'ordering', ['city', 'street'])

            self.request("/default_compound_ordering1?method=%s&tg_paginate_no=2" % method)
            self.assert_order(14, 15, 2, 5, 6, 11)
            Spy.assert_ok(self.body, 'ordering', ['city', 'street'])

    def test_default_compound_ordering_2(self):
        # +/-
        for method in query_methods:
            self.request("/default_compound_ordering2?method=%s" % method)
            self.assert_order(1, 13, 12, 10, 9, 3, 16, 15, 14, 8)
            Spy.assert_ok(self.body, 'ordering', ['city', '-street'])

            self.request("/default_compound_ordering2?method=%s&tg_paginate_no=2" % method)
            self.assert_order(7, 4, 11, 6, 5, 2)
            Spy.assert_ok(self.body, 'ordering', ['city', '-street'])

    def test_default_compound_ordering_3(self):
        # -/+
        for method in query_methods:
            self.request("/default_compound_ordering3?method=%s" % method)
            self.assert_order(2, 5, 6, 11, 4, 7, 8, 14, 15, 16)
            Spy.assert_ok(self.body, 'ordering', ['-city', 'street'])

            self.request("/default_compound_ordering3?method=%s&tg_paginate_no=2" % method)
            self.assert_order(3, 9, 10, 12, 13, 1)
            Spy.assert_ok(self.body, 'ordering', ['-city', 'street'])

    def test_default_compound_ordering_4(self):
        # -/-
        for method in query_methods:
            self.request("/default_compound_ordering4?method=%s" % method)
            self.assert_order(11, 6, 5, 2, 15, 14, 8, 7, 4, 1)
            Spy.assert_ok(self.body, 'ordering', ['-city', '-street'])

            self.request("/default_compound_ordering4?method=%s&tg_paginate_no=2" % method)
            self.assert_order(13, 12, 10, 9, 3, 16)
            Spy.assert_ok(self.body, 'ordering', ['-city', '-street'])

    def test_related_objects_ordering_level_1(self):
        # +/+
        self.request("/related?tg_paginate_ordering=%s" % quote('user.name,id'))
        self.assert_order(1, 5, 3, 13, 7, 11, 16, 2, 12, 14)
        Spy.assert_ok(self.body, 'ordering', ['user.name', 'id'])

        self.request("/related?tg_paginate_no=2&tg_paginate_ordering=%s"
            % quote('user.name,id'))
        self.assert_order(10, 4, 6, 9, 15, 8)
        Spy.assert_ok(self.body, 'ordering', ['user.name', 'id'])

        # +/-
        self.request("/related?tg_paginate_ordering=%s" % quote('user.name,-id'))
        self.assert_order(5, 1, 3, 13, 16, 11, 7, 12, 2, 14)
        Spy.assert_ok(self.body, 'ordering', ['user.name', '-id'])

        self.request("/related?tg_paginate_no=2&tg_paginate_ordering=%s"
            % quote('user.name,-id'))
        self.assert_order(10, 15, 9, 6, 4, 8)
        Spy.assert_ok(self.body, 'ordering', ['user.name', '-id'])

        # -/+
        self.request("/related?tg_paginate_ordering=%s" % quote('-user.name,id'))
        self.assert_order(8, 4, 6, 9, 15, 10, 14, 2, 12, 7)
        Spy.assert_ok(self.body, 'ordering', ['-user.name', 'id'])

        self.request("/related?tg_paginate_no=2&tg_paginate_ordering=%s"
            % quote('-user.name,id'))
        self.assert_order(11, 16, 13, 3, 1, 5)
        Spy.assert_ok(self.body, 'ordering', ['-user.name', 'id'])

        # -/-
        self.request("/related?tg_paginate_ordering=%s" % quote('-user.name,-id'))
        self.assert_order(8, 15, 9, 6, 4, 10, 14, 12, 2, 16)
        Spy.assert_ok(self.body, 'ordering', ['-user.name', '-id'])

        self.request("/related?tg_paginate_no=2&tg_paginate_ordering=%s"
            % quote('-user.name,-id'))
        self.assert_order(11, 7, 13, 3, 5, 1)
        Spy.assert_ok(self.body, 'ordering', ['-user.name', '-id'])

    def test_related_objects_ordering_level_2(self):
        # +/+
        self.request("/related?tg_paginate_ordering=%s"
            % quote('user.occupation.name,id'))
        self.assert_order(1, 5, 10, 13, 14, 2, 7, 11, 12, 16)
        Spy.assert_ok(self.body, 'ordering', ['user.occupation.name', 'id'])

        self.request("/related?tg_paginate_no=2&tg_paginate_ordering=%s"
            % quote('user.occupation.name,id'))
        self.assert_order(4, 6, 8, 9, 15, 3)
        Spy.assert_ok(self.body, 'ordering', ['user.occupation.name', 'id'])

        # +/-
        self.request("/related?tg_paginate_ordering=%s"
            % quote('user.occupation.name,-id'))
        self.assert_order(14, 13, 10, 5, 1, 16, 12, 11, 7, 2)
        Spy.assert_ok(self.body, 'ordering', ['user.occupation.name', '-id'])

        self.request("/related?tg_paginate_no=2&tg_paginate_ordering=%s"
            % quote('user.occupation.name,-id'))
        self.assert_order(15, 9, 8, 6, 4, 3)
        Spy.assert_ok(self.body, 'ordering', ['user.occupation.name', '-id'])

        # -/+
        self.request("/related?tg_paginate_ordering=%s"
            % quote('-user.occupation.name,id'))
        self.assert_order(3, 4, 6, 8, 9, 15, 2, 7, 11, 12)
        Spy.assert_ok(self.body, 'ordering', ['-user.occupation.name', 'id'])

        self.request("/related?tg_paginate_no=2&tg_paginate_ordering=%s"
            % quote('-user.occupation.name,id'))
        self.assert_order(16, 1, 5, 10, 13, 14)
        Spy.assert_ok(self.body, 'ordering', ['-user.occupation.name', 'id'])

        # -/-
        self.request("/related?tg_paginate_ordering=%s"
            % quote('-user.occupation.name,-id'))
        self.assert_order(3, 15, 9, 8, 6, 4, 16, 12, 11, 7)
        Spy.assert_ok(self.body, 'ordering', ['-user.occupation.name', '-id'])

        self.request("/related?tg_paginate_no=2&tg_paginate_ordering=%s"#
            % quote('-user.occupation.name,-id'))
        self.assert_order(2, 14, 13, 10, 5, 1)
        Spy.assert_ok(self.body, 'ordering', ['-user.occupation.name', '-id'])

    def test_zero_limit(self):
        for method in query_methods:
            self.request("/zero_limit?method=%s" % method)
            self.assert_order(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)

    def test_ticket_1641(self):
        self.request("/empty_with_groupby")
        self.assert_order()


def setup_module():
    create_tables()
    hub.commit()

def teardown_module():
    drop_tables()
    sqlalchemy_cleanup()
