def test_append_expectation(empty_suite, exp1, exp2):
    assert (len(empty_suite.expectations) == 0)
    empty_suite.append_expectation(exp1)
    assert (len(empty_suite.expectations) == 1)
    empty_suite.append_expectation(exp1)
    assert (len(empty_suite.expectations) == 2)
    empty_suite.append_expectation(exp2)
    assert (len(empty_suite.expectations) == 3)
def test_append_expectation(empty_suite, exp1, exp2):
    assert (len(empty_suite.expectations) == 0)
    empty_suite.append_expectation(exp1)
    assert (len(empty_suite.expectations) == 1)
    empty_suite.append_expectation(exp1)
    assert (len(empty_suite.expectations) == 2)
    empty_suite.append_expectation(exp2)
    assert (len(empty_suite.expectations) == 3)