Elixir: Date and time

🚧 In development

Instructions

🚧 In development

The exercise doesn't pass checking. What to do? 😶

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In my environment the code works, but not here 🤨

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Your exercise will be checked with these tests:

1defmodule Test do
2  use ExUnit.Case
3
4  describe "shift_days work" do
5    test "with Date" do
6      time = Date.utc_today()
7
8      assert Date.add(time, -2) == Solution.shift_days(time, -2)
9      assert Date.add(time, 2) == Solution.shift_days(time, 2)
10      assert Date.add(time, 1) == Solution.shift_days(time, 1)
11      assert Date.add(time, 0) == Solution.shift_days(time, 0)
12    end
13
14    test "with NaiveDateTime" do
15      time = NaiveDateTime.utc_now()
16
17      assert NaiveDateTime.add(time, days_to_seconds(-2), :second) ==
18               Solution.shift_days(time, -2)
19
20      assert NaiveDateTime.add(time, days_to_seconds(2), :second) == Solution.shift_days(time, 2)
21      assert NaiveDateTime.add(time, days_to_seconds(1), :second) == Solution.shift_days(time, 1)
22      assert NaiveDateTime.add(time, 0, :second) == Solution.shift_days(time, 0)
23    end
24
25    test "with DateTime" do
26      time = DateTime.utc_now()
27
28      assert DateTime.add(time, days_to_seconds(-2), :second) == Solution.shift_days(time, -2)
29      assert DateTime.add(time, days_to_seconds(2), :second) == Solution.shift_days(time, 2)
30      assert DateTime.add(time, days_to_seconds(1), :second) == Solution.shift_days(time, 1)
31      assert DateTime.add(time, 0, :second) == Solution.shift_days(time, 0)
32    end
33
34    test "with Time" do
35      time = Time.utc_now()
36
37      assert Time.add(time, days_to_seconds(-2), :second) == Solution.shift_days(time, -2)
38      assert Time.add(time, days_to_seconds(2), :second) == Solution.shift_days(time, 2)
39      assert Time.add(time, days_to_seconds(1), :second) == Solution.shift_days(time, 1)
40      assert Time.add(time, 0, :second) == Solution.shift_days(time, 0)
41    end
42
43    defp days_to_seconds(amount) do
44      amount * 24 * 60 * 60
45    end
46  end
47end
48

Teacher's solution will be available in:

20:00

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