Question

我在codeschool上关注此代码

string_extension_test.rb

gem "minitest", "~> 4.0"
require "test/unit"
require "string_extension"

assert "3".is_number?
assert !"Blash".is_number?

string_extension.rb

class String 
    def is_number?
        if self =~/^\d+$/
            true
        else
            false
        end
    end
end

我输入ruby -I. string_extension_test.rb

但是，它显示了

string_extension_test.rb:6:in `<main>': undefined method `assert' for main:Object (NoMethodError)

我尝试在 string_extension_test.rb 中添加include Test::Unit::Assertions，它可以通过，但没有测试用例。

输出将是

Finished tests in 0.013038s, 0.0000 tests/s, 0.0000 assertions/s.
0 tests, 0 assertions, 0 failures, 0 errors, 0 skips

Answer 1

您可能需要将测试放在继承自Test :: Unit :: TestCase的类中。类似的东西：

class StringExtensionTest < Test::Unit::TestCase
  def test_is_number
    assert '3'.is_number?
  end

  def test_is_not_number
    assert !'B'.is_number?
  end
end

Answer 2

将测试放在一个类中......确保方法以字符串“test”...

开头

gem "minitest", "~> 4.0"
require 'test/unit'
require 'calc'
class TestStringExtension < Test::Unit::TestCase
    def test_is_number?
      assert "3".is_number?
      assert !"Blash".is_number?
    end
end

Ruby：未定义的方法`断言'

2 个答案: