viebel/bs-enzyme

Bucklescript bindings for Enzyme

bs-enzyme - BuckleScript bindings for Enzyme

🚧 Note: This package is still very experimental. Expect frequent, breaking changes right up until 1.0 is released. 🚧

---

Status

• Most of the shallow API is implemented
• The simulate method is currently wrapped in multiple simulateN functions to handle mixed variadic arguments
• Neither the render nor mount APIs are implemented
• I haven't extensively tested most of the functions, so some might be broken

Example

Using the excellent bs-jest

open Jest;

let setup ::title="Test" ::handleClick=(fun _evt => ()) () =>
  Enzyme.shallow <DummyComponent title handleClick />;

let header wrapper =>
  wrapper
  |> Enzyme.find "#header"
  |> Enzyme.first;

let listItems wrapper =>
  wrapper
  |> Enzyme.find "#list"
  |> Enzyme.children;

describe "DummyComponent" (fun () => {
  open Expect;

  test "renders a #header" (fun () => {
    let title = "A test title";
    let wrapper = setup title::title ();
    let headerNodes = wrapper |> header;

    expect (Enzyme.length headerNodes) |> toBe 1;
  });

  test "has the expected h1 tag in the #header" (fun () => {
    let title = "A test title";
    let wrapper = setup title::title ();
    let expectedNode = <h1>(ReasonReact.stringToElement title)</h1>;

    expect (Enzyme.contains expectedNode wrapper) |> toBe true;
  });

  test "initially has its `clicked` state set to false" (fun () => {
    let wrapper = setup ();
    let { clicked }: DummyComponent.state = Enzyme.state wrapper;
    expect clicked |> toBe false;
  });

  test "folds left properly" (fun () => {
    let items = setup () |> listItems;
    let result =  Enzyme.foldLeft (fun text node => text ^ Enzyme.text node) "" items;
    expect result |> toBe "OneTwoThree";
  });
});

See more examples in the project's tests directory.

Installation

$ npm install --save-dev bs-enzyme

Then add bs-enzyme to bs-dev-dependencies in your bsconfig.json:

{
  ...
  "bs-dev-dependencies": ["bs-enzyme"]
}

Note: If you're using this package with bs-jest, be sure to list bs-enzyme first in your dependencies.