ExUnit is a unit testing library that ships as part of the Elixir standard library.
Questions tagged [ex-unit]
117 questions
0
votes
1 answer
How to write ExUnit test cases in elixir for an escript project
I have an escript project done in Elixir using mix.
The project has two or three .ex files that needs to be executed using certain arguments using the "escript" command
It is like a client server based project where one escript run, starts the…
Skadoosh
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3 answers
Use ExUnit to test CLI Elixir script
I'm writing a single exs file Elixir script (not using mix). The script contains a module, as well one function call in the outer scope that starts accepting input from stdin and sends it to the module functions.
I also have a second file that…
Jeremiah Rose
- 3,865
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1 answer
Weird error which shows up *sometimes* in tests in Elixir using Ecto
Error:
14:18:04.259 [error] GenServer MyApp.Receiver.Handlers terminating
** (Ecto.Query.CastError) deps/ecto/lib/ecto/repo/queryable.ex:382: value `1234` in `where` cannot be cast to type :string in query:
from c0 in MyApp.DB.Client,
where:…
GenericJam
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2 answers
In Elixir ExUnit, how do I guarantee that the Supervisor will create a new GeNserver?
I'm learning to test in Elixir and this problem appeared:
When I run the following test, sometimes it passes and sometimes don't, I'm thinking it is the fact that the Supervisor don't have the time to restart the GenServer:
test "Supervisor will…
Mateus Luiz
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2 answers
How to hide logs in some tests but not in others?
Background
I have library that logs messages depending on the value of disable_logging:
unless Application.get(:my_app, :disable_logging, false), do:
Logger.info("Hello World!")
Depending on MIX_ENV I have a config for each…
Flame_Phoenix
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1 answer
In this ExUnit test runner, why is ExUnit.Server.modules_loaded() called here?
So when running ExUnit with the stale option, why is this line ExUnit.Server.modules_loaded() called?
I think this line Kernel.ParallelCompiler.require(test_files, parallel_require_callbacks) is needed to require the ex_unit test files to be able to…
Nona
- 5,302
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1 answer
Handling error for large queries and sending 413 response
I have a voice note upload function. I was writing tests and as part of it I wrote the following test for larger files where I want to have it throw a 413 Entity too large error:
test "send VN fail when too large", %{conn: conn} do
…
Omar Hussein
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0
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1 answer
ExUnit.CaptureIO still waits for input on multiple IO.read calls
Consider the following minimal [?] example:
defmodule Foo do
def bar() do
n = IO.read(:line) |> String.trim() |> String.to_integer()
for _ <- 0..n - 1 do
IO.read(:line) |> IO.write()
end
end
end
import…
a small orange
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1 answer
ExUnit triggers Empty Error with setup_all block
I have a test which requires preinserted data.
So I am trying to setup those data with setup_all callback as those data can be setup once.
Since I do not want to assign anything to context, I defined setup_all like below
setup_all do
…
D.R
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0
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1 answer
Cyclic dependency in test cases
I have three apps in umbrella project setup
Datalayer
ApiLayer
OtherLayer Some Other layer(but mandatory)
Now I have dependencies defined like this in mix file
App ApiLayer has
{:OtherLayer, in_umbrella: true},
{:Datalayer, in_umbrella: true}
App…
Radio Active
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1 answer
Writing doctests when a struct is returned
An answer to a similar question has this question.
In order to test a function with doctests, you must be able to predict the output of your function.
Issue
As mentioned in the title I would like to stick with using doctests but this doesn't…
shmink
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0 answers
How to have multiple assertions in an ExUnit doctest
I am trying to write the majority of my tests in documentation.
They form a very helpful set of documentation.
Several of the tests have a moderate amount of setup and it would be cleanest if I could have several assertions in the doctest.
I tried…
Peter Saxton
- 4,466
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1 answer
Check status code with ExUnit failed, but actual REST test success
I'm writing a controller function where it will check for a condition ( keyword to be valid ) before either to render a json object or error object if failed.
router.ex
scope "/api", DongNghiaWeb do
pipe_through :api
scope "/tim_kiem" do
…
Sơn Đỗ Đình Thy
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0
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2 answers
Phoenix controller test case loses current_user
I'm facing the problem where all tests in which I need to assert more than one thing with a logged in user, it seems that it loses the saved session.
I have a setup code which assigns a fixture user before each test:
setup %{conn: conn} = config do
…
thyago stall
- 1,654
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0
votes
1 answer
Use ExUnit.Assertions inside macro
I have written a small macro for test cases.
defmodule ControllerTest do
@required [:phone, :country]
defmacro create(fields) do
quote do
without = length(unquote(@required) -- unquote(field)
if without !=…
script
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