Question

它要求实现类Tester，它接收一个类并运行以test开头的所有方法。

class AssertionFailed < Exception
end
class TestCase
  def setUp
  end
  def tierDown
  end
  def assertTrue(expresion)
    if not expresion then
      raise AssertionFailed.new(expresion.to_s + " is not true")
    end
  end
  def assertEquals(result, expected)
    if result != expected
      raise AssertionFailed.new(result.to_s + " is not equal to " + expected.to_s)
    end
  end
end
class IntegerTest < TestCase
  def setUp
    @number = 1
  end
  def testSum
    assertTrue(1 + @number == 2)
    @number += 1
  end
  def testSub
    assertTrue(2 - @number == @number)
  end
  def testMulByZero
    assertEquals(@number*0, 1)
  end
  def testAddByZero
    assertEquals(@number + 0, @number + 1)
  end
end

Tester.test(IntegerTest)

示例：

Tester.test(IntegerTest)
[*] testMulByZero failed: 0 is not equals to 1
[*] testAddByZero failed: 1 is not equals to 2

帮助：Iterable模块的grep方法接收正则表达式，并返回all 与该表达式匹配的元素。对于练习，请使用grep（\ test *）收集方法以获得所寻求的方法。

Answer 1

我终于得到了source和one的答案我所做的是开始给出的测试，然后我创建一个数组，通过要求de tes testig他的instace开始测试，最后它是一个迭代数组要求执行每个方法，如果他们失败的断言然后告诉他们

class Tester

def self.test(testing)
    tested=testing.new
    tested.setUp
    method_arr=testing.instance_methods.grep(/test*/)
    method_arr.each do |x|
        begin
        tested.send(:"#{x}")
        rescue AssertionFailed =>assert_fail
            puts "[*]" + "#{assert_fail}"
        end
    end
end

端

如何制作Ruby Tester？

1 个答案: