为什么即使在需要“测试/单元"之后也会抛出“未定义的方法‘assert_equal’" [英] Why 'undefined method `assert_equal' ' is thrown even after requiring 'test/unit'

问题描述

我打开了 irb &输入:

I opened irb & entered:

require 'test/unit'

但是当我使用 assert_equal 方法时，出现以下错误:NoMethodError: undefined method 'assert_equal' for main:Object.为什么即使在要求测试/单元"之后也会发生这种情况?

but when I used the assert_equal method, I got following error: NoMethodError: undefined method 'assert_equal' for main:Object. Why is this happening even after requiring 'test/unit' ?

推荐答案

assert_equal 定义在 Test::Unit::TestCase 的子类上，因此仅在那个班.您可能会成功使用 include Test::Unit::TestCase 将这些方法加载到当前范围.

assert_equal is defined on subclasses of Test::Unit::TestCase, so are only available in that class. You may have some success with include Test::Unit::TestCase to load those methods onto the current scope.

更有可能将测试编写在一个短文件中，并使用 ruby ./my_file.rb

More likely you could be better writing your tests in a short file, and running them with ruby ./my_file.rb

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