"""Benchmark for SQLAlchemy.

An adaptation of Robert Brewers' ZooMark speed tests.
"""

import datetime
import sys
import time
from sqlalchemy import *
from sqlalchemy.test import *

ITERATIONS = 1

dbapi_session = engines.ReplayableSession()
metadata = None

    
class ZooMarkTest(TestBase):
    """Runs the ZooMark and squawks if method counts vary from the norm.

    Each test has an associated `call_range`, the total number of accepted
    function calls made during the test.  The count can vary between Python
    2.4 and 2.5.

    Unlike a unit test, this is a ordered collection of steps.  Running
    components individually will fail.

    """

    __only_on__ = 'postgresql+psycopg2'
    __skip_if__ = ((lambda: sys.version_info < (2, 4)), )

    def test_baseline_0_setup(self):
        global metadata

        creator = testing.db.pool._creator
        
        recorder = lambda: dbapi_session.recorder(creator())
        engine = engines.testing_engine(options={'creator':recorder})
        engine.dialect._unwrap_connection = engines.unwrap_connection
        metadata = MetaData(engine)

    def test_baseline_1_create_tables(self):
        Zoo = Table('Zoo', metadata,
                    Column('ID', Integer, Sequence('zoo_id_seq'),
                           primary_key=True, index=True),
                    Column('Name', Unicode(255)),
                    Column('Founded', Date),
                    Column('Opens', Time),
                    Column('LastEscape', DateTime),
                    Column('Admission', Float),
                    )

        Animal = Table('Animal', metadata,
                       Column('ID', Integer, Sequence('animal_id_seq'),
                              primary_key=True),
                       Column('ZooID', Integer, ForeignKey('Zoo.ID'),
                              index=True),
                       Column('Name', Unicode(100)),
                       Column('Species', Unicode(100)),
                       Column('Legs', Integer, default=4),
                       Column('LastEscape', DateTime),
                       Column('Lifespan', Float(4)),
                       Column('MotherID', Integer, ForeignKey('Animal.ID')),
                       Column('PreferredFoodID', Integer),
                       Column('AlternateFoodID', Integer),
                       )
        metadata.create_all()

    def test_baseline_1a_populate(self):
        Zoo = metadata.tables['Zoo']
        Animal = metadata.tables['Animal']

        wap = Zoo.insert().execute(Name=u'Wild Animal Park',
                           Founded=datetime.date(2000, 1, 1),
                           # 59 can give rounding errors with divmod, which
                           # AdapterFromADO needs to correct.
                           Opens=datetime.time(8, 15, 59),
                           LastEscape=datetime.datetime(2004, 7, 29, 5, 6, 7),
                           Admission=4.95,
                           ).inserted_primary_key[0]

        sdz = Zoo.insert().execute(Name =u'San Diego Zoo',
                           Founded = datetime.date(1935, 9, 13),
                           Opens = datetime.time(9, 0, 0),
                           Admission = 0,
                           ).inserted_primary_key[0]

        Zoo.insert(inline=True).execute(
                  Name = u'Montr\xe9al Biod\xf4me',
                  Founded = datetime.date(1992, 6, 19),
                  Opens = datetime.time(9, 0, 0),
                  Admission = 11.75,
                  )

        seaworld = Zoo.insert().execute(
                Name =u'Sea_World', Admission = 60).inserted_primary_key[0]

        # Let's add a crazy futuristic Zoo to test large date values.
        lp = Zoo.insert().execute(Name =u'Luna Park',
                                  Founded = datetime.date(2072, 7, 17),
                                  Opens = datetime.time(0, 0, 0),
                                  Admission = 134.95,
                                  ).inserted_primary_key[0]

        # Animals
        leopardid = Animal.insert().execute(Species=u'Leopard', Lifespan=73.5,
                                            ).inserted_primary_key[0]
        Animal.update(Animal.c.ID==leopardid).execute(ZooID=wap,
                LastEscape=datetime.datetime(2004, 12, 21, 8, 15, 0, 999907))

        lion = Animal.insert().execute(Species=u'Lion', ZooID=wap).inserted_primary_key[0]
        Animal.insert().execute(Species=u'Slug', Legs=1, Lifespan=.75)

        tiger = Animal.insert().execute(Species=u'Tiger', ZooID=sdz
                                        ).inserted_primary_key[0]

        # Override Legs.default with itself just to make sure it works.
        Animal.insert(inline=True).execute(Species=u'Bear', Legs=4)
        Animal.insert(inline=True).execute(Species=u'Ostrich', Legs=2, Lifespan=103.2)
        Animal.insert(inline=True).execute(Species=u'Centipede', Legs=100)

        emp = Animal.insert().execute(Species=u'Emperor Penguin', Legs=2,
                                      ZooID=seaworld).inserted_primary_key[0]
        adelie = Animal.insert().execute(Species=u'Adelie Penguin', Legs=2,
                                         ZooID=seaworld).inserted_primary_key[0]

        Animal.insert(inline=True).execute(Species=u'Millipede', Legs=1000000, ZooID=sdz)

        # Add a mother and child to test relationships
        bai_yun = Animal.insert().execute(Species=u'Ape', Name=u'Bai Yun',
                                          Legs=2).inserted_primary_key[0]
        Animal.insert(inline=True).execute(Species=u'Ape', Name=u'Hua Mei', Legs=2,
                                MotherID=bai_yun)

    def test_baseline_2_insert(self):
        Animal = metadata.tables['Animal']
        i = Animal.insert(inline=True)
        for x in xrange(ITERATIONS):
            tick = i.execute(Species=u'Tick', Name=u'Tick %d' % x, Legs=8)

    def test_baseline_3_properties(self):
        Zoo = metadata.tables['Zoo']
        Animal = metadata.tables['Animal']

        def fullobject(select):
            """Iterate over the full result row."""
            return list(select.execute().first())

        for x in xrange(ITERATIONS):
            # Zoos
            WAP = fullobject(Zoo.select(Zoo.c.Name==u'Wild Animal Park'))
            SDZ = fullobject(Zoo.select(Zoo.c.Founded==datetime.date(1935, 9, 13)))
            Biodome = fullobject(Zoo.select(Zoo.c.Name==u'Montr\xe9al Biod\xf4me'))
            seaworld = fullobject(Zoo.select(Zoo.c.Admission == float(60)))

            # Animals
            leopard = fullobject(Animal.select(Animal.c.Species ==u'Leopard'))
            ostrich = fullobject(Animal.select(Animal.c.Species==u'Ostrich'))
            millipede = fullobject(Animal.select(Animal.c.Legs==1000000))
            ticks = fullobject(Animal.select(Animal.c.Species==u'Tick'))

    def test_baseline_4_expressions(self):
        Zoo = metadata.tables['Zoo']
        Animal = metadata.tables['Animal']

        def fulltable(select):
            """Iterate over the full result table."""
            return [list(row) for row in select.execute().fetchall()]

        for x in xrange(ITERATIONS):
            assert len(fulltable(Zoo.select())) == 5
            assert len(fulltable(Animal.select())) == ITERATIONS + 12
            assert len(fulltable(Animal.select(Animal.c.Legs==4))) == 4
            assert len(fulltable(Animal.select(Animal.c.Legs == 2))) == 5
            assert len(fulltable(Animal.select(and_(Animal.c.Legs >= 2, Animal.c.Legs < 20)
                                     ))) == ITERATIONS + 9
            assert len(fulltable(Animal.select(Animal.c.Legs > 10))) == 2
            assert len(fulltable(Animal.select(Animal.c.Lifespan > 70))) == 2
            assert len(fulltable(Animal.select(Animal.c.Species.startswith(u'L')))) == 2
            assert len(fulltable(Animal.select(Animal.c.Species.endswith(u'pede')))) == 2

            assert len(fulltable(Animal.select(Animal.c.LastEscape != None))) == 1
            assert len(fulltable(Animal.select(None == Animal.c.LastEscape
                                     ))) == ITERATIONS + 11

            # In operator (containedby)
            assert len(fulltable(Animal.select(Animal.c.Species.like(u'%pede%')))) == 2
            assert len(fulltable(Animal.select(Animal.c.Species.in_([u'Lion', u'Tiger', u'Bear'])))) == 3

            # Try In with cell references
            class thing(object): pass
            pet, pet2 = thing(), thing()
            pet.Name, pet2.Name =u'Slug', u'Ostrich'
            assert len(fulltable(Animal.select(Animal.c.Species.in_([pet.Name, pet2.Name])))) == 2

            # logic and other functions
            assert len(fulltable(Animal.select(Animal.c.Species.like(u'Slug')))) == 1
            assert len(fulltable(Animal.select(Animal.c.Species.like(u'%pede%')))) == 2
            name =u'Lion'
            assert len(fulltable(Animal.select(func.length(Animal.c.Species) == len(name)
                                     ))) == ITERATIONS + 3

            assert len(fulltable(Animal.select(Animal.c.Species.like(u'%i%')
                                     ))) == ITERATIONS + 7

            # Test now(), today(), year(), month(), day()
            assert len(fulltable(Zoo.select(and_(Zoo.c.Founded != None,
                                  Zoo.c.Founded < func.current_timestamp(_type=Date))))) == 3
            assert len(fulltable(Animal.select(Animal.c.LastEscape == func.current_timestamp(_type=Date)))) == 0
            assert len(fulltable(Animal.select(func.date_part('year', Animal.c.LastEscape) == 2004))) == 1
            assert len(fulltable(Animal.select(func.date_part('month', Animal.c.LastEscape) == 12))) == 1
            assert len(fulltable(Animal.select(func.date_part('day', Animal.c.LastEscape) == 21))) == 1

    def test_baseline_5_aggregates(self):
        Animal = metadata.tables['Animal']
        Zoo = metadata.tables['Zoo']

        for x in xrange(ITERATIONS):
            # views
            view = select([Animal.c.Legs]).execute().fetchall()
            legs = [x[0] for x in view]
            legs.sort()

            expected = {'Leopard': 73.5,
                        'Slug': .75,
                        'Tiger': None,
                        'Lion': None,
                        'Bear': None,
                        'Ostrich': 103.2,
                        'Centipede': None,
                        'Emperor Penguin': None,
                        'Adelie Penguin': None,
                        'Millipede': None,
                        'Ape': None,
                        'Tick': None,
                        }
            for species, lifespan in select([Animal.c.Species, Animal.c.Lifespan]
                                            ).execute().fetchall():
                assert lifespan == expected[species]

            expected = [u'Montr\xe9al Biod\xf4me', 'Wild Animal Park']
            e = select([Zoo.c.Name],
                       and_(Zoo.c.Founded != None,
                            Zoo.c.Founded <= func.current_timestamp(),
                            Zoo.c.Founded >= datetime.date(1990, 1, 1)))
            values = [val[0] for val in e.execute().fetchall()]
            assert set(values) == set(expected)

            # distinct
            legs = [x[0] for x in
                    select([Animal.c.Legs], distinct=True).execute().fetchall()]
            legs.sort()

    def test_baseline_6_editing(self):
        Zoo = metadata.tables['Zoo']

        for x in xrange(ITERATIONS):
            # Edit
            SDZ = Zoo.select(Zoo.c.Name==u'San Diego Zoo').execute().first()
            Zoo.update(Zoo.c.ID==SDZ['ID']).execute(
                     Name=u'The San Diego Zoo',
                     Founded = datetime.date(1900, 1, 1),
                     Opens = datetime.time(7, 30, 0),
                     Admission = "35.00")

            # Test edits
            SDZ = Zoo.select(Zoo.c.Name==u'The San Diego Zoo').execute().first()
            assert SDZ['Founded'] == datetime.date(1900, 1, 1), SDZ['Founded']

            # Change it back
            Zoo.update(Zoo.c.ID==SDZ['ID']).execute(
                     Name =u'San Diego Zoo',
                     Founded = datetime.date(1935, 9, 13),
                     Opens = datetime.time(9, 0, 0),
                     Admission = "0")

            # Test re-edits
            SDZ = Zoo.select(Zoo.c.Name==u'San Diego Zoo').execute().first()
            assert SDZ['Founded'] == datetime.date(1935, 9, 13)

    def test_baseline_7_multiview(self):
        Zoo = metadata.tables['Zoo']
        Animal = metadata.tables['Animal']

        def fulltable(select):
            """Iterate over the full result table."""
            return [list(row) for row in select.execute().fetchall()]

        for x in xrange(ITERATIONS):
            za = fulltable(select([Zoo.c.ID] + list(Animal.c),
                                  Zoo.c.Name ==u'San Diego Zoo',
                                  from_obj = [join(Zoo, Animal)]))

            SDZ = Zoo.select(Zoo.c.Name==u'San Diego Zoo')

            e = fulltable(select([Zoo.c.ID, Animal.c.ID],
                                 and_(Zoo.c.Name==u'San Diego Zoo',
                                      Animal.c.Species==u'Leopard'),
                                 from_obj = [join(Zoo, Animal)]))

            # Now try the same query with INNER, LEFT, and RIGHT JOINs.
            e = fulltable(select([Zoo.c.Name, Animal.c.Species],
                                 from_obj=[join(Zoo, Animal)]))
            e = fulltable(select([Zoo.c.Name, Animal.c.Species],
                                 from_obj=[outerjoin(Zoo, Animal)]))
            e = fulltable(select([Zoo.c.Name, Animal.c.Species],
                                 from_obj=[outerjoin(Animal, Zoo)]))

    def test_baseline_8_drop(self):
        metadata.drop_all()

    # Now, run all of these tests again with the DB-API driver factored out:
    # the ReplayableSession playback stands in for the database.

    # How awkward is this in a unittest framework?  Very.

    def test_profile_0(self):
        global metadata

        player = lambda: dbapi_session.player()
        engine = create_engine('postgresql:///', creator=player)
        engine.dialect._unwrap_connection = engines.unwrap_connection
        metadata = MetaData(engine)

    @profiling.function_call_count(3178, {'2.4': 2012})
    def test_profile_1_create_tables(self):
        self.test_baseline_1_create_tables()

    @profiling.function_call_count(5371, {'2.4': 3650})
    def test_profile_1a_populate(self):
        self.test_baseline_1a_populate()

    @profiling.function_call_count(259, {'2.4': 186})
    def test_profile_2_insert(self):
        self.test_baseline_2_insert()

    @profiling.function_call_count(3834, {'2.4': 2347})
    def test_profile_3_properties(self):
        self.test_baseline_3_properties()

    @profiling.function_call_count(13341, {'2.4': 7963, '2.6+cextension':12447})
    def test_profile_4_expressions(self):
        self.test_baseline_4_expressions()

    @profiling.function_call_count(1311, {'2.4': 904})
    def test_profile_5_aggregates(self):
        self.test_baseline_5_aggregates()

    @profiling.function_call_count(1904, {'2.4': 1193})
    def test_profile_6_editing(self):
        self.test_baseline_6_editing()

    @profiling.function_call_count(2641, {'2.4': 1673, '2.6+cextension':2502})
    def test_profile_7_multiview(self):
        self.test_baseline_7_multiview()

    def test_profile_8_drop(self):
        self.test_baseline_8_drop()


