rustkas

rustkas

Property-Based Testing with PropEr, Erlang, and Elixir: generator utf8() is absent (page 452)

Appendix 4
Generator Reference
(page 452)

The table has description about utf8() generator:

Generates to utf8-encoded text as a binary data structure.

Unfortunately, PropEr API do not has this generator. Link to documentation of PropEr API - link.

Link to unit() generator documentation - link. Link to vector() generator documentation - link. There are the closest places where documentation of utf8() generator could be.

Check if any generator is present in PropEr API, like integer() or tuple() via console:

lists:keyfind(integer, 1, element(2, lists:keyfind(exports, 1, proper_types:module_info()))).
{integer,2}
lists:keyfind(tuple, 1, element(2, lists:keyfind(exports, 1, proper_types:module_info()))).
{tuple,1}

Check if generator utf8() is missing in PropEr API via console:

lists:keyfind(utf8, 1, element(2, lists:keyfind(exports, 1, proper_types:module_info()))).
false

Note that, the console should be lounched in pbt project folder, which was created in the Chapter 1.

proper_types src.

Marked As Solved

rustkas

rustkas

I get it! Now (after gaining experience with the PropEr framework) I understand that utf8() generator exists. :partying_face:
It is in its (special) part of the framework - module proper_unicode.

It would be nice if this function at its location would have some kind of footnote.

Where Next?

Popular Pragmatic Bookshelf topics Top

johnp
Running the examples in chapter 5 c under pytest 5.4.1 causes an AttributeError: ‘module’ object has no attribute ‘config’. In particula...
New
brianokken
Many tasks_proj/tests directories exist in chapters 2, 3, 5 that have tests that use the custom markers smoke and get, which are not decl...
New
leba0495
Hello! Thanks for the great book. I was attempting the Trie (chap 17) exercises and for number 4 the solution provided for the autocorre...
New
jgchristopher
“The ProductLive.Index template calls a helper function, live_component/3, that in turn calls on the modal component. ” Excerpt From: Br...
New
digitalbias
Title: Build a Weather Station with Elixir and Nerves: Problem connecting to Postgres with Grafana on (page 64) If you follow the defau...
New
New
mert
AWDWR 7, page 152, page 153: Hello everyone, I’m a little bit lost on the hotwire part. I didn’t fully understand it. On page 152 @rub...
New
New
gorkaio
root_layout: {PentoWeb.LayoutView, :root}, This results in the following following error: no “root” html template defined for PentoWeb...
New
mcpierce
@mfazio23 I’ve applied the changes from Chapter 5 of the book and everything builds correctly and runs. But, when I try to start a game,...
New

Other popular topics Top

wolf4earth
@AstonJ prompted me to open this topic after I mentioned in the lockdown thread how I started to do a lot more for my fitness. https://f...
New
dasdom
No chair. I have a standing desk. This post was split into a dedicated thread from our thread about chairs :slight_smile:
New
DevotionGeo
I know that -t flag is used along with -i flag for getting an interactive shell. But I cannot digest what the man page for docker run com...
New
Exadra37
I am asking for any distro that only has the bare-bones to be able to get a shell in the server and then just install the packages as we ...
New
Exadra37
Oh just spent so much time on this to discover now that RancherOS is in end of life but Rancher is refusing to mark the Github repo as su...
New
Help
I am trying to crate a game for the Nintendo switch, I wanted to use Java as I am comfortable with that programming language. Can you use...
New
PragmaticBookshelf
Author Spotlight Rebecca Skinner @RebeccaSkinner Welcome to our latest author spotlight, where we sit down with Rebecca Skinner, auth...
New
New
PragmaticBookshelf
Author Spotlight: Peter Ullrich @PJUllrich Data is at the core of every business, but it is useless if nobody can access and analyze ...
New
New

Sub Categories: