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調試測試時,很容易將一些IO.inspect
語句放在那裏看看發生了什麼。這很好,直到物體變得太大。IEx.configure相當於混合測試?
什麼是mix
相當於iex
的IEx.configure [inspect: [limit: 1000]]
運行時mix test
?
調試測試時,很容易將一些IO.inspect
語句放在那裏看看發生了什麼。這很好,直到物體變得太大。IEx.configure相當於混合測試?
什麼是mix
相當於iex
的IEx.configure [inspect: [limit: 1000]]
運行時mix test
?
IEx.configure [inspect: [limit: 1000]]
只更改iex
自動調用的inspect
對於輸入的每個表達式的選項,並且不會更改實際的IO.inspect
函數的行爲。你必須圍繞IO.inspect
和使用創造一個包裝,而不是IO.inspect
:
test "the truth" do
list = Enum.to_list(1..100)
IO.inspect list
i list
end
defp i(item, opts \\ []) do
IO.inspect(item, Keyword.put(opts, :limit, 1000))
end
輸出:
$ mix test
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,
43, 44, 45, 46, 47, 48, 49, 50, ...]
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22,
23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42,
43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62,
63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82,
83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100]
.
Finished in 0.03 seconds
1 test, 0 failures