askirmas / react-classnaming

import expectRender from "../expect-to-same-render"

import classNaming from "react-classnaming"

import type {ClassHash, ClassNamesProperty} from "react-classnaming"

// import css_module from "./button.module.css"

const css_module = {button: "BTN"}

it("Basic usage", () => {

  type Props = {

    isValid: boolean

    readOnly: boolean

  }

  expectRender(

    <FormButtons isValid={false} readOnly={false} />

  ).toSame(<>

    <button className="button">Close</button>

    <button type="reset" className="button">Reset</button>

    <button type="submit" className="button_submit button button--disabled">Submit</button>

  </>)

})

it("Strict type", () => {

  type Props = {readOnly?: boolean}

  const {readOnly} = {} as Props

  const cssClasses = classNaming()

  const disabling = cssClasses({

    //@ts-expect-error Type 'boolean | undefined' is not assignable to type 'boolean'

    "button--disabled": readOnly

  })

  expect({...disabling}).toStrictEqual({className: "button--disabled"})

})

it("Single source of truth", () => {

  const cssClasses = classNaming()

  const isValidClass = cssClasses({"button--disabled": /* !isValid */ false })

  // ... more code

  const buttonClass = isValidClass({button: true})

  // ... more code

  const disablingClass = buttonClass({

    //@ts-expect-error Type 'boolean' is not assignable to type 'never'

    "button--disabled": true

  })

  expect({...disablingClass}).toStrictEqual({

    className: "button button--disabled"

  })

})

it("Declare own component's CSS classes", () => {

  type MyClassNames = ClassNamesProperty<{

    button: ClassHash

    button_submit: ClassHash

    "button--disabled": ClassHash

  }>

  type Props = {

    isValid: boolean

    readOnly: boolean

  }

  // isValid = false, readOnly = false

  function FormButtons({isValid, readOnly}: Props) {

    const cssClasses = classNaming<MyClassNames>()

    const buttonClass = cssClasses({button: true})

    return <>

      <button {

        ...buttonClass // className="button" 

      }>Close</button>

      <button type="reset" {

        ...buttonClass({

        "button--disabled": readOnly

      }) // className="button"

      }>Reset</button> 

      <button type="submit" {

        ...buttonClass({

          "button_submit": true,

          "button--disabled": readOnly || !isValid

        }) // className="button button_submit button--disabled"

      }>Submit</button> 

    </>

  }  

  expectRender(

    <FormButtons isValid={false} readOnly={false} />

  ).toSame(<>

    <button className="button">Close</button>

    <button type="reset" className="button">Reset</button>

    <button type="submit" className="button button_submit button--disabled">Submit</button>

  </>)

})

it("Using ClassHash", () => {

  // CSS-module

  const { button } = css_module

  // Module simulation

  type CssModuleSimulation = { button_submit: ClassHash }

  const { button_submit } = {} as CssModuleSimulation

  type MyClassNames = ClassNamesProperty<

    typeof css_module &

    CssModuleSimulation &

    {

      "button--disabled": ClassHash

    }

  >

  type Props = {

    isValid: boolean

    readOnly: boolean

  }

  // isValid = false, readOnly = false

  function FormButtons({isValid, readOnly}: Props) {

    const cssClasses = classNaming<MyClassNames>()

    const buttonClass = cssClasses({ button })

    return <>

      <button {

        ...buttonClass // className="BTN" 

      }>Close</button>

      <button type="reset" {

        ...buttonClass({

          "button--disabled": readOnly

      }) // className="BTN"

      }>Reset</button> 

      <button type="submit" {...buttonClass({

        button_submit,

        "button--disabled": readOnly || !isValid

      }) // "BTN button_submit button--disabled"

      }>Submit</button> 

    </>

  }  

  expectRender(

    <FormButtons isValid={false} readOnly={false} />

  ).toSame(<>

    <button className="BTN">Close</button>

    <button type="reset" className="BTN">Reset</button>

    <button type="submit" className="BTN button_submit button--disabled">Submit</button>

  </>)

})