使用内置的 Ruby Minitest 框架,有没有办法在整个套件运行之前运行一些代码,甚至在整个 TestClass 运行之前运行一次?我在这个问题的答案中看到Test::Unit::after_tests 可用于在运行所有测试后运行代码;在所有测试运行之前是否有类似的方法来运行代码?
我想使用此功能在测试运行之前初始化测试数据库,并在它们全部运行后将其拆除。
谢谢!
这是从 MiniTest文档修改的(在 Customizable Test Runner Types 下)。
class Burger
def initialize
puts "YOU CREATED A BURGER"
end
def has_cheese?
true
end
def has_pickle?
false
end
end
gem 'minitest'
require 'minitest/unit'
MiniTest::Unit.autorun
class MyMiniTest
class Unit < MiniTest::Unit
def before_suites
# code to run before the first test
p "Before everything"
end
def after_suites
# code to run after the last test
p "After everything"
end
def _run_suites(suites, type)
begin
before_suites
super(suites, type)
ensure
after_suites
end
end
def _run_suite(suite, type)
begin
suite.before_suite if suite.respond_to?(:before_suite)
super(suite, type)
ensure
suite.after_suite if suite.respond_to?(:after_suite)
end
end
end
end
MiniTest::Unit.runner = MyMiniTest::Unit.new
class BurgerTest < MiniTest::Unit::TestCase
def self.before_suite
p "hi"
end
def self.after_suite
p "bye"
end
def setup
@burger = Burger.new
end
def test_has_cheese
assert_equal true, @burger.has_cheese?
end
def test_has_pickle
assert_equal false, @burger.has_pickle?
end
end
请注意,我包括gem 'minitest'
使用 gem 而不是没有该MiniTest::Unit.runner
方法的捆绑版本。这是输出。
Run options: --seed 49053
# Running tests:
"Before everything"
"hi"
YOU CREATED A BURGER
.YOU CREATED A BURGER
."bye"
"After everything"
Finished tests in 0.000662s, 3021.1480 tests/s, 3021.1480 assertions/s.
2 tests, 2 assertions, 0 failures, 0 errors, 0 skips
所以它调用#setup
了两次,但.before_suite
只有.after_suite
一次,我认为这就是你要找的。
在 MiniTest 套件中的所有测试运行之前和之后处理时间的另一种方法是将if
块放在setup
&teardown
方法中以控制这些块只被调用一次。
这样,您可以在测试套件开始时只加载一次浏览器和其他依赖项(例如页面对象),然后在所有测试完成后关闭浏览器。
下面是一个使用 MiniTest 5.5.1 和 Watir 的示例:
class CoolTests < Minitest::Test
@@setupComplete = false # tracks whether 1-time setup has completed, so we only instantiate a browser and dependent pages/modules one time per suite run
@@testsRun = 0 # tracks how many tests have run so we can close the browser when all tests complete
def setup # Minitest#setup runs before every #test method
@@testsRun+=1 # increment tetsRun indicating that a test has run
if (!@@setupComplete) # we load the browser and necessary page objects here one-time if we haven't already
@@driver = Watir::Browser.new :chrome # instantiate new chrome browser
@@driver.window.maximize # maximize the browser window so we expect to test against Desktop UI/UX rather than Mobile UI/UX
@@setupComplete = true # setupComplete is now true as we've loaded up everything we need for our tests
end
end
def teardown # Minitest#teardown runs after every #test method
if (@@testsRun == CoolTests.runnable_methods.length) # if we've run all the tests in the suite we are finished and can then close the browser
@@driver.quit
end
end
#Tests
def test_one
p __method__
@@driver.goto('www.google.com')
assert_equal 'Google', @@driver.title, 'browser should be at google.com'
end
def test_two
p __method__
@@driver.goto('www.bing.com')
assert_equal 'Bing', @@driver.title, 'browser should be at bing.com'
end