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import sys
import collections

from assertpy import assert_that,fail


def test_is_iterable():
    assert_that(['a','b','c']).is_iterable()
    assert_that((1,2,3)).is_iterable()
    assert_that('foo').is_iterable()
    assert_that({ 'a':1,'b':2,'c':3 }.keys()).is_iterable()
    assert_that({ 'a':1,'b':2,'c':3 }.values()).is_iterable()
    assert_that({ 'a':1,'b':2,'c':3 }.items()).is_iterable()

def test_is_iterable_failure():
    try:
        assert_that(123).is_iterable()
        fail('should have raised error')
    except AssertionError as ex:
        assert_that(str(ex)).is_equal_to('Expected iterable, but was not.')

def test_is_not_iterable():
    assert_that(123).is_not_iterable()
    assert_that({ 'a':1,'b':2,'c':3 }).is_iterable()

def test_is_not_iterable_failure():
    try:
        assert_that(['a','b','c']).is_not_iterable()
        fail('should have raised error')
    except AssertionError as ex:
        assert_that(str(ex)).is_equal_to('Expected not iterable, but was.')

def test_is_subset_of():
    assert_that(['a','b','c']).is_subset_of(['a','b','c'])
    assert_that(['a','b','c']).is_subset_of(['a','b','c','d'])
    assert_that(['a','b','c']).is_subset_of(['a'], ['b'], ['c'])
    assert_that(['a','b','c']).is_subset_of('a','b','c')
    assert_that(['a','b','a']).is_subset_of(['a','a','b'])
    assert_that((1,2,3)).is_subset_of((1,2,3))
    assert_that((1,2,3)).is_subset_of((1,2,3,4))
    assert_that((1,2,3)).is_subset_of((1,), (2,), (3,))
    assert_that((1,2,3)).is_subset_of(1,2,3)
    assert_that((1,2,1)).is_subset_of(1,1,2)
    assert_that('foo').is_subset_of('abcdefghijklmnopqrstuvwxyz')
    assert_that('foo').is_subset_of('abcdef', set(['m','n','o']), ['x','y'])
    assert_that(set([1,2,3])).is_subset_of(set([1,2,3,4]))
    assert_that({'a':1,'b':2}).is_subset_of({'a':1,'b':2,'c':3})
    assert_that({'a':1,'b':2}).is_subset_of({'a':3}, {'b':2}, {'a':1})

def test_is_subset_of_single_item_superset():
    assert_that(['a']).is_subset_of(['a'])
    assert_that((1,)).is_subset_of((1,))
    assert_that('ab').is_subset_of('ab')
    assert_that(set([1])).is_subset_of(set([1]))
    assert_that({'a':1}).is_subset_of({'a':1})

def test_is_subset_of_failure_empty_superset():
    try:
        assert_that(['a','b','c']).is_subset_of([])
        fail('should have raised error')
    except AssertionError as ex:
        assert_that(str(ex)).contains('to be subset of <>')

def test_is_subset_of_failure_single_item_superset():
    try:
        assert_that(['a','b','c']).is_subset_of(['x'])
        fail('should have raised error')
    except AssertionError as ex:
        if sys.version_info[0] == 3:
            assert_that(str(ex)).contains("to be subset of <{'x'}>")
        assert_that(str(ex)).contains("but <'a', 'b', 'c'> were missing.")

def test_is_subset_of_failure_array():
    try:
        assert_that(['a','b','c']).is_subset_of(['a','b'])
        fail('should have raised error')
    except AssertionError as ex:
        assert_that(str(ex)).contains('but <c> was missing.')

def test_is_subset_of_failure_set():
    try:
        assert_that(set([1,2,3])).is_subset_of(set([1,2]))
        fail('should have raised error')
    except AssertionError as ex:
        assert_that(str(ex)).contains('but <3> was missing.')

def test_is_subset_of_failure_string():
    try:
        assert_that('abc').is_subset_of('abx')
        fail('should have raised error')
    except AssertionError as ex:
        assert_that(str(ex)).contains('but <c> was missing.')

def test_is_subset_of_failure_dict_key():
    try:
        assert_that({'a':1,'b':2}).is_subset_of({'a':1,'c':3})
        fail('should have raised error')
    except AssertionError as ex:
        assert_that(str(ex)).contains("but <{'b': 2}> was missing")

def test_is_subset_of_failure_dict_value():
    try:
        assert_that({'a':1,'b':2}).is_subset_of({'a':1,'b':22})
        fail('should have raised error')
    except AssertionError as ex:
        assert_that(str(ex)).contains("but <{'b': 2}> was missing.")

def test_is_subset_of_failure_bad_dict_arg1():
    try:
        assert_that({'a':1,'b':2}).is_subset_of('foo')
        fail('should have raised error')
    except TypeError as ex:
        assert_that(str(ex)).contains('arg #1').contains('is not dict-like')

def test_is_subset_of_failure_bad_dict_arg2():
    try:
        assert_that({'a':1,'b':2}).is_subset_of({'a':1}, 'foo')
        fail('should have raised error')
    except TypeError as ex:
        assert_that(str(ex)).contains('arg #2').contains('is not dict-like')

def test_is_subset_of_bad_val_failure():
    try:
        assert_that(123).is_subset_of(1234)
        fail('should have raised error')
    except TypeError as ex:
        assert_that(str(ex)).is_equal_to('val is not iterable')

def test_is_subset_of_bad_arg_failure():
    try:
        assert_that(['a','b','c']).is_subset_of()
        fail('should have raised error')
    except ValueError as ex:
        assert_that(str(ex)).is_equal_to('one or more superset args must be given')

def test_chaining():
    assert_that(['a','b','c']).is_iterable().is_type_of(list).is_length(3)

