Backgrounds

作用

• 可以理解为当前 Feature 下多个 Scenario 都需要用到的 Given，就可以放到 Background 中
• 可以理解为公共的前置数据（步骤）

注意

• Backgrounds 只能添加 Given 关键字
• Backgrounds 的所有步骤都会在所有 Scenario 之前运行完毕，但会在 BeforeScenario Hooks 之后运行

实际例子

background.feature

Feature: Payment
  Background:
    Given Merchant No is <merchant_no>
    And username: polo and password: 123456
  @payment @off-chain
  Scenario Outline: Payments - Check off-chain payment for checkout via Main App
    When Create <amount> <currency> payment via api
    Then I select polo.com App and paid by <pay_currency> and verify captured for Checkout
    Examples:
      | merchant_no  | amount | currency | pay_currency |
      | Merchant-001 | 200    | USD      | USD          |
      | Merchant-001 | 300    | USD      | CNA          |
  @payment @on-chain
  Scenario Outline: Payments - Check off-chain payment in CRO/BTC/ETH/TUSD/USDC/USDT
    When Create <amount> <currency> payment via api to website
    Then I select polo.com App and paid by <pay_currency> and verify captured for Checkout
    Examples:
      | merchant_no  | amount | currency | pay_currency |
      | Merchant-001 | 1    | USD      | CRO          |
      | Merchant-001 | 2    | USD      | ETH          |
      | Merchant-001 | 3    | USD      | TUSD         |
      | Merchant-001 | 4    | USD      | USDC         |
      | Merchant-001 | 5    | USD      | USDT         |

test_background.py

from pytest_bdd import given, when, then, parsers, scenarios
# Background 的两个 given
@given(parsers.parse("Merchant No is {merchant_no}"))
def get_merchant_no(merchant_no):
    return merchant_no
@given(parsers.parse("username: {name} and password: {password}"), target_fixture="user")
def user(name, password):
    return dict(name=name, password=password)
@when(parsers.parse("Create {amount} {currency} payment via api"))
def create1(amount, currency, merchant_no, user, name, password):
    print(amount, currency, merchant_no, user, name, password)
@when(parsers.parse("Create {amount} {currency} payment via api to website"))
def create2(amount, currency, merchant_no, user, name, password):
    print(amount, currency, merchant_no, user, name, password)
@then(parsers.parse("I select {wallet} and paid by {pay_currency} and verify captured for Checkout"))
def walt(wallet, pay_currency, merchant_no, user):
    print(wallet, pay_currency, merchant_no, user)
scenarios("backgroud.feature")

命令行运行

pytest -sq test_backgroud.py

运行结果

200 USD Merchant-001 {'name': 'polo', 'password': '123456'} polo 123456
polo.com App USD Merchant-001 {'name': 'polo', 'password': '123456'}
.300 USD Merchant-001 {'name': 'polo', 'password': '123456'} polo 123456
polo.com App CNA Merchant-001 {'name': 'polo', 'password': '123456'}
.1 USD Merchant-001 {'name': 'polo', 'password': '123456'} polo 123456
polo.com App CRO Merchant-001 {'name': 'polo', 'password': '123456'}
.2 USD Merchant-001 {'name': 'polo', 'password': '123456'} polo 123456
polo.com App ETH Merchant-001 {'name': 'polo', 'password': '123456'}
.3 USD Merchant-001 {'name': 'polo', 'password': '123456'} polo 123456
polo.com App TUSD Merchant-001 {'name': 'polo', 'password': '123456'}
.4 USD Merchant-001 {'name': 'polo', 'password': '123456'} polo 123456
polo.com App USDC Merchant-001 {'name': 'polo', 'password': '123456'}
.5 USD Merchant-001 {'name': 'polo', 'password': '123456'} polo 123456
polo.com App USDT Merchant-001 {'name': 'polo', 'password': '123456'}
.
7 passed in 0.02s

7 条用例均正常运行