这里讲了如何安装rspec，安装使用rspec。
下面介绍一下rspec中常见的使用方法。
下面是一个最简单的测试用例，判断true是不是等于true，should_be是旧的用法，新用法推荐使用expect()
it "is true when true" do true.should be_true end
#新用法
it "is true when true" do expect(true).to be_true end
一，测试models中的方法
1，测试实例方法
#spec/models/contact_spec.rb
def name
[firstname, lastname].join(‘ ‘)
end
#spec/models/contact_spec.rb it "returns a contact‘s full name as a string" do contact = Contact.new(firstname: ‘John‘, lastname: ‘Doe‘, email: ‘johndoe@example.com‘) expect(contact.name).to eq ‘John Doe‘ end
测试相等时，RSpec 推荐使用 eq 而不是 ==。
2，测试类方法和作用域
#spec/models/contact_spec.rb def self.by_letter(letter) where("lastname LIKE ?", "#{letter}%").order(:lastname) end
require ‘spec_helper‘ describe Contact do # earlier validation examples omitted ... it "returns a sorted array of results that match" do smith = Contact.create(firstname: ‘John‘, lastname: ‘Smith‘, email: ‘jsmith@example.com‘), jones = Contact.create(firstname: ‘Tim‘, lastname: ‘Jones‘, email: ‘tjones@example.com‘), johnson = Contact.create(firstname: ‘John‘, lastname: ‘Johnson‘, email: ‘jjohnson@example.com‘) expect(Contact.by_letter("J")).to eq [johnson, jones] end end
使用下面代码来检测返回值中是否没有包含联系人 smith
expect(Contact.by_letter("J")).to_not include smith
3，捕获异常
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1
2
3 |
expect { result = UI::ApplinkSqlBackup.get_sql_server_info(header, input) }.to raise_error(Esfbase::EsfStandardError) |
将可能发生异常的代码写在expect中，期待返回Esfbase::EsfStandardError类型的error
原文：http://www.cnblogs.com/fanxiaopeng/p/3577066.html