软件测试基础知识自测：你能答对几道题_千锋教育

# 等价类划分测试用例设计
def test_input_range():
    # 有效等价类：1-100
    test_cases = [
        (1, True),    # 下边界
        (50, True),   # 中间值
        (100, True),  # 上边界
        (0, False),   # 下边界-1
        (101, False), # 上边界+1
        (-1, False),  # 负值
        (101.5, False) # 小数
    ]
    for value, expected in test_cases:
        assert validate_input(value) == expected

# 白盒测试：分支覆盖
def calculate_discount(price, is_vip):
    if is_vip:
        if price > 100:
            return price * 0.8  # VIP且>100
        else:
            return price * 0.9  # VIP且<=100
    else:
        if price > 100:
            return price * 0.95  # 非VIP且>100
        else:
            return price  # 非VIP且<=100

# 白盒测试用例需要覆盖4条路径
def test_discount():
    assert calculate_discount(200, True) == 160   # 路径1
    assert calculate_discount(50, True) == 45     # 路径2
    assert calculate_discount(200, False) == 190  # 路径3
    assert calculate_discount(50, False) == 50    # 路径4

# 测试用例优先级管理
test_cases = {
    "payment_order_status": {
        "priority": "P0",
        "description": "支付成功后订单状态从'待支付'变为'已支付'",
        "risk": "数据不一致导致订单丢失"
    },
    "search_sort": {
        "priority": "P1", 
        "description": "搜索结果按价格排序",
        "risk": "用户体验下降"
    },
    "font_color": {
        "priority": "P2",
        "description": "商品详情页字体颜色为#333",
        "risk": "视觉体验影响"
    }
}

# 缺陷管理流程
class Bug:
    def __init__(self, title, steps, expected, actual):
        self.title = title
        self.steps = steps
        self.expected = expected
        self.actual = actual
        self.status = "New"
        
    def review(self, developer_comment, product_decision):
        if product_decision == "fix":
            self.status = "Open"
        elif product_decision == "reject":
            self.status = "Closed"
            self.resolution = "设计如此"
        elif product_decision == "defer":
            self.status = "Deferred"
            
# 示例：测试人员认为支付按钮颜色不符合UI规范
bug = Bug(
    title="支付按钮颜色错误",
    steps="1.打开商品页 2.点击购买 3.观察支付按钮",
    expected="按钮颜色为#FF6600",
    actual="按钮颜色为#FF0000"
)
# 开发人员：这是设计规范更新
# 产品经理：确认设计规范已变更
bug.review("设计规范v2.0已更新", "reject")

ROI = (手动测试总时间 - 自动化测试总时间) / 自动化测试总时间 × 100%
ROI = (833 - 1747) / 1747 × 100% = -52.3%

def calculate_roi(manual_time, auto_develop_time, auto_execute_time, iterations):
    manual_total = manual_time * iterations
    auto_total = auto_develop_time + auto_execute_time * iterations
    roi = (manual_total - auto_total) / auto_total * 100
    return roi

# 案例计算
manual_per_iteration = 1000 * 5 / 60  # 83.3小时
auto_develop = 80  # 小时
auto_execute = 1000 * 10 / 60  # 166.7小时
iterations = 10

roi = calculate_roi(manual_per_iteration, auto_develop, auto_execute, iterations)
print(f"ROI: {roi:.1f}%")  # 输出: ROI: -52.3%