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Questions tagged [eunit]

EUnit is a Lightweight Unit Testing Framework for Erlang

79 questions
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EUnit output debug info from tested modules

Let us say I have a module called example.erl In this module I use the following construct for debugging: %%% Switch debugging output on/off: %-define(DBG(Str, Args), ok). -define(DBG(Str, Args), io:format(Str, Args)). It helps me to output various…
skanatek
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How do I skip an eunit test?

I wonder how to mark a specific test in eunit in a way that will force it to be ignored (ie compiled, but not executed) on the next test run. I'm asking this question in a TDD context, ie I'd like to refactor in the green, but still have some test…
jupp0r
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2 answers

How to do unit test coverage in Erlang

When using Python I do test code coverage with tools like python-coverage and especially for django the package djaango-nose, I'm looking for an equivalent in Erlang. I already do tests with eunit and generate my reports with surefire but I didn't…
Rodolphe
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3 answers

eunit: How to test a simple process?

I'm currently writing a test for a module that runs in a simple process started with spawn_link(?MODULE, init, [self()]). In my eunit tests, I have a setup and teardown function defined and a set of test generators. all_tests_test_() -> …
jaw
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7
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2 answers

Erlang EUnit test module that depends on a library application

I have a medium-sized release with a handful of applications. I recently refactored some common functionality out into a library application within the release. This made my EUnit tests fail with undef messages whenever testing anything that…
dantswain
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7
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3 answers

Erlang YAWS: How to test a simple REST web service?

In a simple Erlang YAWS-based RESTful application I would like to have a set of tests that send HTTP requests to a RESTful API, get responses from the server and then test those responses. It would be nice if each "send-request-get-request-test"…
skanatek
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7
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4 answers

not output exception stack trace in EUnit

I'm write a test with EUnit, but not anything exception detail output in console. exp_test() -> ?assertEqual(0, 1/0). Run this module:exp_test() in the Erlang Shell output following ** exception error: bad argument in an arithmetic expression in…
hpyhacking
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Is there a way of only running unit tests in a single module using Eunit in Erlang/OTP?

I have a number of modules with unit tests. Is there a way of only running unit tests in a single module? This is what the relevant section of the module looks like: -export([ .....…
mbsheikh
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3 answers

EUnit fails to test private functions

I'm writing EUnit tests for Erlang code. I have a source module: -module(prob_list). -export([intersection/2,union/2]). probability([], _Item) -> false; probability([{First,Probability}|Rest], Item) -> if First == Item -> Probability; …
Uko
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2 answers

Erlang, eunit and gen_server: context cleanup failed

I wrote some eunit test on my gen_server: -module(st_db_tests). -include_lib("eunit/include/eunit.hrl"). main_test_() -> {foreach, fun setup/0, fun cleanup/1, [ fun db_server_up/1 ]}. setup() -> {ok,Pid} =…
Dmitrii Dushkin
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1 answer

How to debug my Eunit test suite run when using rebar3?

I have created an release app with rebar3 (beta-4). Added some eunit tests and wrote some code. For now I have to debug one test case to see what I have to add to make the implementation to work properly. I found some articles about using dbg from…
Stanislav Trifan
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3 answers

Getting test results from Eunit in Erlang

I am working with Erlang and EUnit to do unit tests, and I would like to write a test runner to automate the running of my unit tests. The problem is that eunit:test/1 seems to only return "error" or "ok" and not a list of tests and what they…
Zachary K
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2 answers

A common setup and teardown method for Erlang Eunit test suites

I am trying to check if all the indexes I have defined in MongoDB are being used by my application and that there are no extra indexes. I have a utility that does that for a single Eunit test suite. However, some of my components have more than one…
Vishal
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4 answers

Showing full expected and value information when ?_assertEqual fails

I'm coding a unit test where a (rather lengthy) binary is generated, and I want to assert that the generated binary equals the one I expect to be generated. I'm running eunit through "rebar eunit". Thing is, when this assertion fails, the output is…
marcelog
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What's the point of meck:validate?

As a newcomer to meck, I've been putting together a test that shows the various features. I cannot, however, understand why a developer might call meck:validate. Here's my…
MrBlueSky
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