Exemple #1
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def test_monoid_law_right_identity(m):
    # a + mempty = a
    assert tc.mappend(m, tc.mempty(m)) == m
Exemple #2
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def test_Just_add_monoid_empty():
    obj = object()
    value = Just(obj)
    assert value + mempty(value) == value
Exemple #3
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def test_monoid_law_left_identity(m):
    # mempty + a = a
    assert tc.mappend(tc.mempty(m), m) == m
Exemple #4
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def test_monoid_law_right_identity(monoids):
    # a + mempty = a
    monoid = monoids[0]
    assert tc.mappend(monoid, tc.mempty(monoid)) == monoid
Exemple #5
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def test_monoid_law_left_identity(monoids):
    # mempty + a = a
    monoid = monoids[0]
    assert tc.mappend(tc.mempty(monoid), monoid) == monoid
def test_monoid_law_left_identity(monoids):
    # mempty + a = a
    monoid = monoids[0]
    assert tc.mappend(tc.mempty(monoid), monoid) == monoid
def test_monoid_law_right_identity(monoids):
    # a + mempty = a
    monoid = monoids[0]
    assert tc.mappend(monoid, tc.mempty(monoid)) == monoid