Elixir: Processes state
🚧 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 🤨
Tests are designed so that they test the solution in different ways and against different data. Often the solution works with one kind of input data but doesn't work with others. Check the «Tests» tab to figure this out, you can find hints at the error output.
My code is different from the teacher's one 🤔
It's fine. 🙆 One task in programming can be solved in many different ways. If your code passed all tests, it complies with the task conditions.
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I've read the lessons but nothing is clear 🙄
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Your exercise will be checked with these tests:
1defmodule Test do
2 use ExUnit.Case
3
4 describe "cache server work" do
5 test "put" do
6 parent = self()
7 cache_server = spawn(fn -> CacheServer.init(parent) end)
8
9 send(cache_server, {:put, {:hello, "world"}})
10 assert_receive({:ok, "world"})
11 assert Process.alive?(cache_server)
12
13 send(cache_server, {:put, {:key, "value"}})
14 assert_receive({:ok, "value"})
15 assert Process.alive?(cache_server)
16 end
17
18 test "get" do
19 parent = self()
20 cache_server = spawn(fn -> CacheServer.init(parent) end)
21 send(cache_server, {:put, {:hello, "world"}})
22
23 send(cache_server, {:get, {:hello}})
24 assert_receive({:ok, "world"})
25 assert Process.alive?(cache_server)
26
27 send(cache_server, {:get, {:some}})
28 assert_receive({:error, :not_found})
29 assert Process.alive?(cache_server)
30 end
31
32 test "drop" do
33 parent = self()
34 cache_server = spawn(fn -> CacheServer.init(parent) end)
35 send(cache_server, {:put, {:hello, "world"}})
36
37 send(cache_server, {:drop, {:hello}})
38 assert_receive({:ok, :hello})
39 assert Process.alive?(cache_server)
40
41 send(cache_server, {:drop, {:some}})
42 assert_receive({:ok, :some})
43 assert Process.alive?(cache_server)
44 end
45
46 test "exit" do
47 parent = self()
48 cache_server = spawn(fn -> CacheServer.init(parent) end)
49
50 send(cache_server, {:exit})
51 assert_receive({:ok, :exited})
52 refute Process.alive?(cache_server)
53 end
54
55 test "unexpected input" do
56 parent = self()
57 cache_server = spawn(fn -> CacheServer.init(parent) end)
58
59 send(cache_server, {:something, {1, 2, 3}})
60 assert_receive({:error, :unrecognized_operation})
61 assert Process.alive?(cache_server)
62
63 send(cache_server, :boom)
64 assert_receive({:error, :unrecognized_operation})
65 assert Process.alive?(cache_server)
66 end
67 end
68end
69Teacher's solution will be available in:
