我有一个看起来像这样的方法:
def self.average_top_level_comments_leaders
top_level_comment_count = CrucibleComment.group(:user_id).where(parent_comment_id: nil).order('count_all DESC').count
code_review_assigned_count = Reviewer.group(:user_id).order('count_all DESC').count
division_result = top_level_comment_count.inject({}) do |result, item|
id = item.first #id =12
count = item.last #value = 57
if (count && code_review_assigned_count[id])
result[id] = (count/ code_review_assigned_count[id]).round(2)
#result[12] = 57/12 = 3.3, => {12, 3.3}
end
result
end
end
此方法返回一个散列,其中ID为键,分区结果为值。
我已成功测试了top_level_comment_count和code_review_assigned计数,但我无法弄清楚如何测试do块中的其他4个内容:
.first, .last, .round(2), result
我正在尝试测试。首先,这是我到目前为止所做的:
describe '#average_top_level_comments_leaders' do
subject { User.average_top_level_comments_leaders}
let(:avg_top_level_comments) { double }
let(:code_review_count) { double }
let(:item) { double( {id: 12}) }
context 'when getting the comment count succeeds ' do
before do
allow(CrucibleComment).to receive(:group).with(:user_id).and_return(avg_top_level_comments)
allow(avg_top_level_comments).to receive(:where).with(parent_comment_id: nil).and_return(avg_top_level_comments)
allow(avg_top_level_comments).to receive(:order).with('count_all DESC').and_return(avg_top_level_comments)
allow(avg_top_level_comments).to receive(:count).and_return(avg_top_level_comments)
allow(avg_top_level_comments).to receive(:inject).and_return(avg_top_level_comments)
allow(item).to receive(:first).and_return(item)
allow(Reviewer).to receive(:group).with(:user_id).and_return(code_review_count)
allow(code_review_count).to receive(:order).with('count_all DESC').and_return(code_review_count)
allow(code_review_count).to receive(:count).and_return(code_review_count)
allow(code_review_count).to receive(:round).with(2).and_return(code_review_count)
end
it 'and the correct parameters are called' do
expect(CrucibleComment).to receive(:group).with(:user_id)
subject
end
it 'and comment count is calling descending correctly' do
expect(avg_top_level_comments).to receive(:order).with('count_all DESC')
subject
end
it 'item gets the first result' do
expect(item).to receive(:first)
subject
end
end
end
我无法通过最后一个声明。我试图期望(项目)。接收(:第一),但它在错误中说明了这一点:
失败/错误:期待(项目)。收到(:第一) (双).first(*(any args)) 预期:任何参数1次 收到:0次带有任何参数
知道为什么这不通过?其他两个正在传递
答案 0 :(得分:2)
item
double从未在测试中使用过,所以当它到达时:
expect(item).to receive(:first)
失败了。
如果您希望在此item
块中使用inject
双精度数字:
division_result = top_level_comment_count.inject({}) do |result, item|
仅凭它具有相同的名称,它不会那样工作。您需要在avg_top_level_comments
双精度上定义一个方法,该方法在调用item
时返回inject
双精度。
但是,你不应该这样做。抛出所有这些并使用真实的模型实例进行测试。它将更容易阅读和维护。