pytest官方文档解读fixtures的调用方式

def test_my_fruit_in_basket(my_fruit, fruit_basket):
    # 这是一个测试函数
    assert my_fruit in fruit_basket

class Fruit:
    def __init__(self, name):
        self.name = name
        self.cubed = False
    def cube(self):
        self.cubed = True
class FruitSalad:
    def __init__(self, *fruit_bowl):
        self.fruit = fruit_bowl
        self._cube_fruit()
    def _cube_fruit(self):
        for fruit in self.fruit:
            fruit.cube()
# Arrange
@pytest.fixture
def fruit_bowl():
    return [Fruit("apple"), Fruit("banana")]
def test_fruit_salad(fruit_bowl):
    # Act
    # 这里接收到fixture函数fruit_bowl的返回值，
    # 也就是[Fruit("apple"), Fruit("banana")]，并使用
    fruit_salad = FruitSalad(*fruit_bowl)
    # Assert
    # python内置函数all()，用于判断给定的可迭代参数 iterable 中的所有元素是否都为 TRUE，
    # 如果是返回 True，否则返回 False
    assert all(fruit.cubed for fruit in fruit_salad.fruit)

# 上面的2个类不变
...
def fruit_bowl():
    return [Fruit("apple"), Fruit("banana")]
def test_fruit_salad(fruit_bowl):
    # Act
    fruit_salad = FruitSalad(*fruit_bowl)
    # Assert
    assert all(fruit.cubed for fruit in fruit_salad.fruit)
# Arrange
bowl = fruit_bowl()
test_fruit_salad(fruit_bowl=bowl)

import pytest
# Arrange
@pytest.fixture
def fruit_bowl():
    return ["苹果", "香蕉"]
def test_fruit_salad(fruit_bowl):
    # Act
    fruit_salad = fruit_bowl[0] + fruit_bowl[1]
    # Assert
    assert fruit_salad == "苹果香蕉"