我想检查一个结果的方法：
result.should == [1.0,2.0,3.0]
但是我收到一个错误：
expected: [1.0, 2.0, 3.0]
got: [1.0, 2.0, 3.0] (using ==)
我认为四舍五入的问题，但我不知道如何比较它们，例如偏差为0.1。
谢谢你，apneadiving。 我写了自己的匹配器，如果它可以帮助某人：
RSpec::Matchers.define :be_closed_array do |expected, truth|
match do |actual|
same = 0
for i in 0..actual.length-1
same +=1 if actual[i].round(truth) == expected[i].round(truth)
end
same == actual.length
end
failure_message_for_should do |actual|
"expected that #{actual} would be close to #{expected}"
end
failure_message_for_should_not do |actual|
"expected that #{actual} would not be close to #{expected}"
end
description do
"be a close to #{expected}"
end
end