這是你如何測試功能以在Ruby中塊？

Question

我有給定一組學生和他們的等級的功能，使得分類：

students = {"Good student":"A","Bad Student":"D","Average student":"C"} 
student_cat = ["Best","So-so","Below average"] 

我的功能是這樣的：現在我測試它像這樣

categorize(students,student_cat) do |s,g| 
    # s would be "Good student" and g would be "Best" 
    # s would be "Bad student" and g would be "Below average" 
    # s would be "Average student" and g would be "So-so" 
end 

：

categorize(students,student_cat) do |s,g| 
     assert g == "Best" if s == "Good student" 
     assert g == "Below average" if s == "Bad student" 
     assert g == "So-so" if s == "Average student" 
    end 

是否有另一種測試功能的方式以塊爲參數？這足夠好嗎？

Answer 1

那將很好地工作。您可以測試多一點嚴格的，不過，如果你使用塊收集的結果，然後斷言整個結果：

results = [] 
categorize(students,student_cat) do |s,g| 
    results << [s, g] 
end 
assert results == [ 
    ["Good student", "Best"], 
    ["Bad Student", "Below average"], 
    ["Average student", "So-so"], 
] 

這樣的功能不能用正確的一起產生一些廢話結果並且不會被發現。

如果該功能可以以任意順序返回其結果，然後進行排序比較之前的結果：

assert results.sort == [ 
    ["Average student", "So-so"], 
    ["Bad Student", "Below average"], 
    ["Good student", "Best"], 
]