from ago import human
from ago import delta2human
from ago import delta2dict

from datetime import datetime
from datetime import timedelta

PRESENT = datetime.now()
PAST    = PRESENT - timedelta( 492, 58711, 45 ) # days, secs, ms
FUTURE  = PRESENT + timedelta( 2, 12447, 963 ) # days, secs, ms

PAST_DELTA   = PRESENT - PAST
FUTURE_DELTA = PRESENT - FUTURE

def test_human_is_string():
    assert 'str' in str(type(human( PAST )))

def test_delta2human_is_string():
    assert 'str' in str(type(delta2human( PAST_DELTA )))

def test_delta2dict_is_dict():
    assert 'dict' in str(type(delta2dict( PAST_DELTA )))

def test_ago_in_past_human():
    assert 'ago' in human( PAST )

def test_in_in_future_human():
    assert 'in' in human( FUTURE )

def test_no_coma_in_one_precision():
    assert ',' not in human( PAST, precision = 1 )
    assert ',' not in human( FUTURE, precision = 1 )

def test_coma_in_three_precision():
    assert ',' in human( PAST, precision = 3 )
    assert ',' in human( FUTURE, precision = 3 )

def test_one_day_singular():
    assert 's' not in delta2human( timedelta(1) )

def test_two_day_plural():
    assert 's' in delta2human( timedelta(2) )

def test_past_format():
    output = human( PAST,
      format_past = 'titanic sunk {0} ago',
      format_future = 'titanic will sink in {0} from now'
    )
    assert 'titanic sunk' in output

def test_future_format():
    output = human( FUTURE,
      format_past = 'titanic sunk {0} ago',
      format_future = 'titanic will sink in {0} from now'
    )
    assert 'titanic will sink in' in output

def test_valid_dict():
    past_dict = delta2dict( PAST_DELTA )
    assert past_dict['year'] == 1
    assert past_dict['day'] == 127
    assert past_dict['hour'] == 16
    assert past_dict['minute'] == 18


def test_output():
    """Test and example usage"""

    print '\nTesting past:\n'
    print delta2dict( PAST_DELTA )
    print 'Commented ' + delta2human( PAST_DELTA, 3 )
    print human( PAST, format_past = "Commented {0} ago" )

    print '\nTesting future:\n'
    print delta2dict( FUTURE_DELTA )
    print 'Shutdown ' + delta2human( FUTURE_DELTA, 3 )
    print human( FUTURE, format_future = 'Shutdown in {0} from now' )
    print ''