コード例 #1
0
ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_survey_survey_score_grouping() -> None:
    """A test for score_grouping() in class Survey."""
    q1 = YesNoQuestion(1, 'BBC')
    q2 = MultipleChoiceQuestion(2, 'ABC', ['A', 'B', 'C'])
    a1 = Answer(True)
    a2 = Answer('A')
    a3 = Answer(True)
    a4 = Answer('C')
    a5 = Answer(True)
    a6 = Answer('B')
    a7 = Answer(False)
    a8 = Answer('C')
    stu1 = Student(100, 'Jack')
    stu2 = Student(200, 'Mike')
    stu3 = Student(300, 'Diana')
    stu4 = Student(400, 'Tom')
    stu1.set_answer(q1, a1)
    stu1.set_answer(q2, a2)
    stu2.set_answer(q1, a3)
    stu2.set_answer(q2, a4)
    stu3.set_answer(q1, a5)
    stu3.set_answer(q2, a6)
    stu4.set_answer(q1, a7)
    stu4.set_answer(q2, a8)
    s = Survey([q1, q2])
    c = HomogeneousCriterion()
    s.set_weight(2.0, q1)
    s.set_criterion(c, q1)
    s.set_criterion(c, q2)
    g1 = Group([stu1, stu2])
    g2 = Group([stu3, stu4])
    grouping = Grouping()
    grouping.add_group(g1)
    grouping.add_group(g2)
    assert s.score_grouping(grouping) == 0.5
コード例 #2
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_survey_survey_set_criterion_invalid() -> None:
    """A test for set_criterion() in class Survey."""
    q1 = CheckboxQuestion(1, 'ABC', ['a', '1', ','])
    q2 = YesNoQuestion(2, 'BBC')
    s = Survey([q1])
    c = HomogeneousCriterion()
    assert s.set_criterion(c, q2) is False
コード例 #3
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_course_all_answered() -> None:
    """A test for all_answered() in class Course."""
    s1 = Student(1, 'A')
    s2 = Student(2, 'B')
    c = Course('CS')
    c.enroll_students([s1, s2])
    q1 = YesNoQuestion(2, 'F')
    q2 = YesNoQuestion(3, 'K')
    a1 = Answer(True)
    a2 = Answer(False)
    survey = Survey([q1, q2])
    s1.set_answer(q1, a1)
    s1.set_answer(q2, a2)
    s2.set_answer(q1, a1)
    s2.set_answer(q2, a2)
    assert c.all_answered(survey) is True
コード例 #4
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_survey_survey_get_questions() -> None:
    """A test for get_questions() in class Survey."""
    q1 = CheckboxQuestion(1, 'ABC', ['a', '1', ','])
    q2 = YesNoQuestion(2, 'BBC')
    s = Survey([q1, q2])
    lst = s.get_questions()
    assert q1 in lst and q2 in lst
コード例 #5
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ファイル: tests-roney.py プロジェクト: RoneyThomas/csc148
def test_criterion() -> None:
    ho_crit = HomogeneousCriterion()
    he_crit = HeterogeneousCriterion()
    lo_crit = LonelyMemberCriterion()

    ynq = YesNoQuestion(1, "Is earth round")
    ynq_1_answers = [Answer(True), Answer(True), Answer(True), Answer(True)]
    ynq_2_answers = [Answer(True), Answer(False), Answer(True), Answer(False)]
    ynq_3_answers = [Answer(True)]
    ynq_4_answers = [Answer(True), Answer(False)]

    assert ho_crit.score_answers(ynq, ynq_1_answers) == 1
    assert ho_crit.score_answers(ynq, ynq_2_answers) == 1 / 3
    assert ho_crit.score_answers(ynq, ynq_3_answers) == 1
    assert ho_crit.score_answers(ynq, ynq_4_answers) == 0

    assert he_crit.score_answers(ynq, ynq_1_answers) == 0.0
    assert he_crit.score_answers(ynq, ynq_2_answers) == pytest.approx(2 / 3,
                                                                      rel=1e-3)
    assert he_crit.score_answers(ynq, ynq_3_answers) == 0.0
    assert he_crit.score_answers(ynq, ynq_4_answers) == 1

    assert lo_crit.score_answers(ynq, ynq_1_answers) == 1
    assert lo_crit.score_answers(ynq, ynq_2_answers) == 0.0
    assert lo_crit.score_answers(ynq, ynq_3_answers) == 1
    assert lo_crit.score_answers(ynq, ynq_4_answers) == 0
コード例 #6
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_criterion_lonely_score_answer_valid_different() -> None:
    """A test for score_answer() in class LonelyMemberCriterion."""
    q1 = YesNoQuestion(1, 'ABC')
    a1 = Answer(True)
    a2 = Answer(False)
    a3 = Answer(False)
    c = LonelyMemberCriterion()
    assert c.score_answers(q1, [a1, a2, a3]) == 0.0
コード例 #7
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ファイル: tests.py プロジェクト: jiheechoi6/CSC148-A1
def test_answer_is_valid() -> None:
    a_multiple = Answer("a")
    a_checkbox = Answer(["a", "b"])
    a_yesno = Answer(True)
    a_yesno_2 = Answer(1)
    a_numeric = Answer(15)

    assert a_multiple.is_valid(MultipleChoiceQuestion(1, "choose", ["a", "b"]))\
           is True
    assert a_multiple.is_valid(MultipleChoiceQuestion(1, "choose", ["c", "b"])) \
           is False
    assert a_checkbox.is_valid(CheckboxQuestion(2, "choose", ["a", "b"])) is \
           True
    assert a_checkbox.is_valid(CheckboxQuestion(2, "choose", ["a", "a"])) is \
           False
    assert a_yesno.is_valid(YesNoQuestion(1, "choose")) is True
    assert a_yesno_2.is_valid(YesNoQuestion(1, "choose")) is False
    assert a_numeric.is_valid(NumericQuestion(1, "5+10", 1, 20)) is True
    assert a_numeric.is_valid(NumericQuestion(1, "5+10", 18, 20)) is False
コード例 #8
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ファイル: tests.py プロジェクト: jiheechoi6/CSC148-A1
def test_lonely_member_criterion() -> None:
    q = CheckboxQuestion(1, "choose", [1, 2, 3, 4])
    q2 = YesNoQuestion(2, "choose")
    a1 = Answer([1, 2, 3, 4])
    a2 = Answer([1])
    a3 = Answer([1])
    a4 = Answer(True)
    a5 = Answer(False)
    a6 = Answer(True)
    a7 = Answer(False)
    c = LonelyMemberCriterion()
    assert c.score_answers(q, [a1, a2]) == 0.0
    assert c.score_answers(q, [a2, a3]) == 1.0
    assert c.score_answers(q2, [a4, a5, a6, a7]) == 1.0
コード例 #9
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_criterion_hetero_score_answer_valid() -> None:
    """A test for score_answer() in class HeterogeneousCriterion."""
    q1 = YesNoQuestion(1, 'ABC')
    a1 = Answer(True)
    a2 = Answer(True)
    a3 = Answer(True)
    a4 = Answer(True)
    a5 = Answer(False)
    a6 = Answer(False)
    c = HeterogeneousCriterion()
    #    a1 a2 a3 a4 a5 a6
    # a1 NA 1  1  1  0  0
    # a2 1  NA 1  1  0  0
    # a3 1  1  NA 1  0  0
    # a4 1  1  1  NA 0  0
    # a5 0  0  0  0  NA 1
    # a6 0  0  0  0  1  NA
    # score = 0.533333...
    assert 0.53 < c.score_answers(q1, [a1, a2, a3, a4, a5, a6]) < 0.54
コード例 #10
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_survey_survey_score_student() -> None:
    """A test for score_student() in class Survey."""
    q1 = YesNoQuestion(1, 'BBC')
    q2 = MultipleChoiceQuestion(2, 'ABC', ['A', 'B', 'C'])
    a1 = Answer(True)
    a2 = Answer('A')
    a3 = Answer(True)
    a4 = Answer('C')
    stu1 = Student(100, 'Jack')
    stu2 = Student(200, 'Mike')
    stu1.set_answer(q1, a1)
    stu1.set_answer(q2, a2)
    stu2.set_answer(q1, a3)
    stu2.set_answer(q2, a4)
    s = Survey([q1, q2])
    c = HomogeneousCriterion()
    s.set_weight(2.0, q1)
    s.set_criterion(c, q1)
    s.set_criterion(c, q2)
    assert s.score_students([stu1, stu2]) == 1.0
コード例 #11
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_grouper_window_make_grouping() -> None:
    """A test for make_grouping() in class WindowGrouper."""
    q1 = YesNoQuestion(1, 'BBC')
    q2 = MultipleChoiceQuestion(2, 'ABC', ['A', 'B', 'C'])
    a1 = Answer(True)
    a2 = Answer('A')
    a3 = Answer(True)
    a4 = Answer('B')
    a5 = Answer(True)
    a6 = Answer('B')
    a7 = Answer(False)
    a8 = Answer('C')
    stu1 = Student(100, 'Jack')
    stu2 = Student(200, 'Mike')
    stu3 = Student(300, 'Diana')
    stu4 = Student(400, 'Tom')
    stu1.set_answer(q1, a1)
    stu1.set_answer(q2, a2)
    stu2.set_answer(q1, a3)
    stu2.set_answer(q2, a4)
    stu3.set_answer(q1, a5)
    stu3.set_answer(q2, a6)
    stu4.set_answer(q1, a7)
    stu4.set_answer(q2, a8)
    window = WindowGrouper(2)
    survey = Survey([q1, q2])
    course = Course('CS')
    cri = HomogeneousCriterion()
    survey.set_weight(2.0, q1)
    survey.set_criterion(cri, q1)
    survey.set_criterion(cri, q2)
    course.enroll_students([stu1, stu2, stu3, stu4])
    result = window.make_grouping(course, survey).get_groups()
    assert stu1 in result[1]
    assert stu2 in result[0]
    assert stu3 in result[0]
    assert stu4 in result[1]
コード例 #12
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ファイル: tests-roney.py プロジェクト: RoneyThomas/csc148
def test_questions() -> None:
    mcq_1 = MultipleChoiceQuestion(1, "Cities in Canada",
                                   ["Toronto", "Ottawa", "Vancouver"])
    assert mcq_1.id == 1
    assert mcq_1.text == "Cities in Canada"
    assert "Cities in Canada" in str(mcq_1)
    assert "Toronto" in str(mcq_1)
    assert "Ottawa" in str(mcq_1)
    assert "Montreal" not in str(mcq_1)
    mcq_1_ans = Answer("Toronto")
    mcq_1_c_ans = Answer("Toronto")
    mcq_2_ans = Answer("Montreal")
    mcq_3_ans = Answer("")
    assert mcq_1_ans.is_valid(mcq_1)
    assert not mcq_2_ans.is_valid(mcq_1)
    assert mcq_1.validate_answer(mcq_1_ans)
    assert not mcq_1.validate_answer(mcq_2_ans)
    assert not mcq_1.validate_answer(mcq_3_ans)
    assert mcq_1.get_similarity(mcq_1_ans, mcq_1_c_ans) == 1.0
    assert mcq_1.get_similarity(mcq_1_ans, mcq_2_ans) == 0.0

    nq_1 = NumericQuestion(1, "A n.o between 1 and 5", 1, 5)
    nq_1_ans = Answer(1)
    nq_2_ans = Answer(2)
    nq_3_ans = Answer(3)
    nq_4_ans = Answer(5)
    nq_5_ans = Answer(10)
    nq_6_ans = Answer(1)
    assert nq_1.validate_answer(nq_1_ans)
    assert nq_1.validate_answer(nq_2_ans)
    assert nq_1.validate_answer(nq_3_ans)
    assert nq_1.validate_answer(nq_4_ans)
    assert not nq_1.validate_answer(nq_5_ans)
    assert nq_1_ans.is_valid(nq_1)
    assert nq_2_ans.is_valid(nq_1)
    assert nq_3_ans.is_valid(nq_1)
    assert nq_4_ans.is_valid(nq_1)
    assert not nq_5_ans.is_valid(nq_1)
    assert nq_1.get_similarity(nq_1_ans, nq_6_ans) == 1.0
    assert nq_1.get_similarity(nq_1_ans, nq_4_ans) == 0.0
    assert nq_1.get_similarity(nq_2_ans, nq_3_ans) == 0.75

    ynq = YesNoQuestion(1, "Is earth round")
    ynq_1 = Answer(True)
    ynq_2 = Answer(False)
    ynq_3 = Answer(False)
    assert ynq_1.is_valid(ynq)
    assert ynq_2.is_valid(ynq)
    assert not ynq.get_similarity(ynq_1, ynq_2)
    assert ynq.get_similarity(ynq_2, ynq_3)

    cbq = CheckboxQuestion(1, "Cities in Canada",
                           ["Toronto", "Ottawa", "Vancouver"])
    cbq_1 = Answer(["Toronto", "Ottawa"])
    cbq_2 = Answer(["Seoul", "Busan"])
    cbq_3 = Answer(["Toronto", "Ottawa"])
    cbq_4 = Answer(["Toronto", "Vancouver"])
    assert cbq.validate_answer(cbq_1)
    assert not cbq.validate_answer(cbq_2)
    assert cbq_1.is_valid(cbq)
    assert not cbq_2.is_valid(cbq)
    assert cbq.get_similarity(cbq_1, cbq_3) == 1
    assert cbq.get_similarity(cbq_1, cbq_4) == 1 / 3
    assert cbq.get_similarity(cbq_1, cbq_2) == 0.0
コード例 #13
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ファイル: tests.py プロジェクト: jiheechoi6/CSC148-A1
def test_yesno_question_get_similarity() -> None:
    q = YesNoQuestion(1, 'choose')
    a1 = Answer(True)
    a2 = Answer(False)
    assert q.get_similarity(a1, a2) == 0.0
コード例 #14
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ファイル: tests.py プロジェクト: jiheechoi6/CSC148-A1
def test_yesno_question_validate_answer() -> None:
    q = YesNoQuestion(1, 'choose!')
    a1 = Answer(False)
    a2 = Answer(1)
    assert q.validate_answer(a1) is True
    assert q.validate_answer(a2) is False
コード例 #15
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ファイル: tests.py プロジェクト: jiheechoi6/CSC148-A1
def test_yesno_question_string() -> None:
    q = YesNoQuestion(1, 'choose!')
    assert str(q) == 'choose! (Yes or No)'
コード例 #16
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_survey_yesno_to_string() -> None:
    """A test for __str__() in class YesNoQuestion."""
    q = YesNoQuestion(1, 'ABC')
    assert type(str(q)) is str
コード例 #17
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_survey_yesno_invalid_answer() -> None:
    """A test for validate_answer() in class YesNoQuestion."""
    q = YesNoQuestion(1, 'ABC')
    a = Answer(2)
    assert q.validate_answer(a) is False
コード例 #18
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_survey_yesno_similarity_different() -> None:
    """A test for get_similarity() in class YesNoQuestion."""
    q = YesNoQuestion(1, 'ABC')
    a1 = Answer(True)
    a2 = Answer(False)
    assert q.get_similarity(a1, a2) == 0.0
コード例 #19
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_criterion_hetero_score_answer_valid_one() -> None:
    """A test for score_answer() in class HeterogeneousCriterion."""
    q1 = YesNoQuestion(1, 'ABC')
    a1 = Answer(True)
    c = HeterogeneousCriterion()
    assert c.score_answers(q1, [a1]) == 0.0
コード例 #20
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ファイル: tests-roney.py プロジェクト: RoneyThomas/csc148
def test_grouper() -> None:
    assert windows([3, 4, 6, 2, 3], 2) == [[3, 4], [4, 6], [6, 2], [2, 3]]
    assert windows(['a', 1, 6.0, False], 3) == [['a', 1, 6.0], [1, 6.0, False]]
    assert slice_list([3, 4, 6, 2, 3], 2) == [[3, 4], [6, 2], [3]]
    assert slice_list(['a', 1, 6.0, False], 3) == [['a', 1, 6.0], [False]]

    g = Group([Student(1, "roney"), Student(2, "tim"), Student(3, "allen")])
    g_1 = Group([Student(1, "roney"), Student(2, "tim"), Student(3, "allen")])
    g_2 = Group([Student(5, "roney"), Student(6, "tim"), Student(7, "allen")])
    assert len(g) == 3
    assert Student(1, "roney") in g
    assert "roney" in str(g)
    gr = Grouping()
    assert gr.add_group(g)
    assert not gr.add_group(g_1)
    assert gr.add_group(g_2)
    assert len(gr) == 2

    course_0 = Course("Snake")
    course_0.enroll_students(
        [Student(1, "a"), Student(2, "b"), Student(3, "c")])
    s = Survey([YesNoQuestion(1, "Is earth round")])
    ag = AlphaGrouper(2)
    gr = ag.make_grouping(course_0, s)
    assert len(gr) == 2

    course_0 = Course("Snake")
    course_0.enroll_students(
        [Student(1, "a"), Student(2, "b"), Student(3, "c")])
    s = Survey([YesNoQuestion(1, "Is earth round")])
    ag = AlphaGrouper(3)
    gr = ag.make_grouping(course_0, s)
    assert len(gr) == 1

    course_0 = Course("Snake")
    course_0.enroll_students(
        [Student(1, "a"), Student(2, "b"), Student(3, "c")])
    s = Survey([YesNoQuestion(1, "Is earth round")])
    ag = RandomGrouper(2)
    gr = ag.make_grouping(course_0, s)
    assert len(gr) == 2

    course_0 = Course("Snake")
    course_0.enroll_students(
        [Student(1, "a"), Student(2, "b"), Student(3, "c")])
    s = Survey([YesNoQuestion(1, "Is earth round")])
    ag = RandomGrouper(3)
    gr = ag.make_grouping(course_0, s)
    assert len(gr) == 1

    course_0 = Course("Snake")
    s1 = Student(1, "a")
    s2 = Student(2, "b")
    s3 = Student(3, "c")
    q = YesNoQuestion(1, "Is earth round")
    s1.set_answer(q, Answer(True))
    s2.set_answer(q, Answer(False))
    s3.set_answer(q, Answer(True))
    course_0.enroll_students([s1, s2, s3])
    s = Survey([q])
    ag = GreedyGrouper(2)
    gr = ag.make_grouping(course_0, s)
    assert len(gr) == 2

    course_0 = Course("Snake")
    s1 = Student(1, "a")
    s2 = Student(2, "b")
    s3 = Student(3, "c")
    q = YesNoQuestion(1, "Is earth round")
    s1.set_answer(q, Answer(True))
    s2.set_answer(q, Answer(False))
    s3.set_answer(q, Answer(True))
    course_0.enroll_students([s1, s2, s3])
    s = Survey([q])
    ag = GreedyGrouper(3)
    gr = ag.make_grouping(course_0, s)
    assert len(gr) == 1
    groups = gr.get_groups()
    assert groups[0]._member_id == [1, 3, 2]

    course_0 = Course("Snake")
    s1 = Student(1, "a")
    s2 = Student(2, "b")
    s3 = Student(3, "c")
    q = YesNoQuestion(1, "Is earth round")
    s1.set_answer(q, Answer(True))
    s2.set_answer(q, Answer(False))
    s3.set_answer(q, Answer(True))
    course_0.enroll_students([s1, s2, s3])
    s = Survey([q])
    s.set_criterion(LonelyMemberCriterion(), q)
    ag = GreedyGrouper(2)
    gr = ag.make_grouping(course_0, s)
    assert len(gr) == 2
    groups = gr.get_groups()
    assert groups[0]._member_id == [1, 3]
    assert groups[1]._member_id == [2]

    course_0 = Course("Snake")
    s1 = Student(1, "a")
    s2 = Student(2, "b")
    s3 = Student(3, "c")
    s4 = Student(4, "d")
    q = YesNoQuestion(1, "Is earth round")
    s1.set_answer(q, Answer(True))
    s2.set_answer(q, Answer(True))
    s3.set_answer(q, Answer(True))
    s4.set_answer(q, Answer(True))
    course_0.enroll_students([s1, s2, s3, s4])
    s = Survey([q])
    s.set_criterion(LonelyMemberCriterion(), q)
    ag = WindowGrouper(2)
    gr = ag.make_grouping(course_0, s)
    assert len(gr) == 2
    groups = gr.get_groups()
    assert groups[0]._member_id == [1, 2]
    assert groups[1]._member_id == [3, 4]

    course_0 = Course("Snake")
    s1 = Student(1, "a")
    s2 = Student(2, "b")
    s3 = Student(3, "c")
    s4 = Student(4, "d")
    q = YesNoQuestion(1, "Is earth round")
    s1.set_answer(q, Answer(True))
    s2.set_answer(q, Answer(False))
    s3.set_answer(q, Answer(True))
    s4.set_answer(q, Answer(False))
    course_0.enroll_students([s1, s2, s3, s4])
    s = Survey([q])
    s.set_criterion(HeterogeneousCriterion(), q)
    ag = WindowGrouper(2)
    gr = ag.make_grouping(course_0, s)
    assert len(gr) == 2
    groups = gr.get_groups()
    assert groups[0]._member_id == [1, 2]
    assert groups[1]._member_id == [3, 4]

    course_0 = Course("Snake")
    s1 = Student(1, "a")
    s2 = Student(2, "b")
    s3 = Student(3, "c")
    s4 = Student(4, "d")
    q = YesNoQuestion(1, "Is earth round")
    s1.set_answer(q, Answer(True))
    s2.set_answer(q, Answer(False))
    s3.set_answer(q, Answer(True))
    s4.set_answer(q, Answer(False))
    course_0.enroll_students([s1, s2, s3, s4])
    s = Survey([q])
    s.set_criterion(HomogeneousCriterion(), q)
    ag = WindowGrouper(2)
    gr = ag.make_grouping(course_0, s)
    assert len(gr) == 2
    groups = gr.get_groups()
    assert groups[0]._member_id == [1, 2]
    assert groups[1]._member_id == [3, 4]

    course_0 = Course("Snake")
    s1 = Student(1, "a")
    s2 = Student(2, "b")
    s3 = Student(3, "c")
    s4 = Student(4, "d")
    q = YesNoQuestion(1, "Is earth round")
    s1.set_answer(q, Answer(True))
    s2.set_answer(q, Answer(False))
    s3.set_answer(q, Answer(False))
    s4.set_answer(q, Answer(False))
    course_0.enroll_students([s1, s2, s3, s4])
    s = Survey([q])
    s.set_criterion(HomogeneousCriterion(), q)
    ag = WindowGrouper(2)
    gr = ag.make_grouping(course_0, s)
    assert len(gr) == 2
    groups = gr.get_groups()
    assert groups[0]._member_id == [2, 3]
    assert groups[1]._member_id == [1, 4]
コード例 #21
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_survey_answer_is_valid_yes() -> None:
    """A test for is_valid() in class Answer."""
    q = YesNoQuestion(1, 'ABC')
    a = Answer(True)
    assert a.is_valid(q)
コード例 #22
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_survey_survey_set_weight_invalid() -> None:
    """A test for set_weight() in class Survey."""
    q1 = CheckboxQuestion(1, 'ABC', ['a', '1', ','])
    q2 = YesNoQuestion(2, 'BBC')
    s = Survey([q1])
    assert s.set_weight(2.0, q2) is False
コード例 #23
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ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_survey_survey_contain() -> None:
    """A test for __contain__() in class Survey."""
    q1 = CheckboxQuestion(1, 'ABC', ['a', '1', ','])
    q2 = YesNoQuestion(2, 'BBC')
    s = Survey([q1, q2])
    assert q1 in s
コード例 #24
0
ファイル: tests.py プロジェクト: xhd131142117/148-a1
def test_survey_survey_to_string() -> None:
    """A test for __str__() in class Survey."""
    q1 = CheckboxQuestion(1, 'ABC', ['a', '1', ','])
    q2 = YesNoQuestion(2, 'BBC')
    s = Survey([q1, q2])
    assert type(str(s)) is str