One dev dependency for your Node.js package to run ESLint, your test.js, coverage and report to Coveralls.io when running in a CI environment.

• It runs ESLint with your package's eslint.config.mjs file
• Then it runs your test.js with nyc to generate a coverage report
• When it detects the code is running in a CI it will also submit the coverage report to Coveralls.io
• In case it runs in a Github action the warning, fail and error lines are highlighted

test.js

// Load test runner and your app
const doTest = require( 'dotest' );
const app = require( './' );

// Check app interface
doTest.add( 'App interface', test => {
  test()
    .isFunction( 'fail', 'methodOne', app.methodOne )
    .isObject( 'fail', 'sub', app.sub )
    .isFunction( 'fail', 'sub.methodTwo', app.sub.methodTwo )
    .done()
  ;
} );

// Check method response
doTest.add( 'App methodOne', test => {
  app.methodOne( ( err, data ) => {
    test( err )
      .isObject( 'fail', 'Callback data', data )
      .isArray( 'fail', 'data.music', data.music )
      .isNotEmpty( 'warn', 'data.music', data.music )
      .done()
    ;
  } );
} );

// Check promise
doTest.add( 'Promise good', async test => {
  let error;
  let data;

  try {
    data = await myPromise();
  }
  catch ( err ) {
    error = err;
  }

  test( error )
    .isObject( 'fail', 'data', data );
    .done()
  ;
} );

// Run the tests
doTest.run();

package.json

Full test including ESLint, test.js, coverage report and Coveralls.io submit.

"scripts": {
  "test": "dotest"
}

Or just run your test.js

"scripts": {
  "test": "node test.js"
}

Just run npm test

This is usually intended for CI builds, so best to make sure it's in your devDependencies

npm i dotest --save-dev

The script takes these env variables. They override the code settings.

( label, testFunction )

Add a new test to the queue.

doTest.add( 'App interface', test => {
  test()
    .isArray( 'fail', 'my array', [] )
    .done()
  ;
} );

( [wait] )

Run the tests from the queue, one by one.

// Normal, without pause between tests
doTest.run();

// Or wait 2 seconds
doTest.run( 2000 );

( [type], str, [dontCount] )

Fancy console.log with style.

The styles error, fail and warn add to the errors and warnings counters, where error and fail also cause the script to fail.

// Bold text
doTest.log( 'note', 'Hello world' );

( )

Force exit the process, after writing statistics to the console.

doTest.exit();

( [err] )

Returns check functions. Optionally test for err instance of Error and dump it to the console.

The check functions take a level parameter. When set to fail the check reports fail and the whole test script will eventually fail. When set to warn the check reports warn but won't cause the script to fail.

You can concat the check functions for clean code.

// Using the method
doTest.add( 'App interface', () => {
  doTest.test()
    .isObject( 'fail', 'Callback data', data )
    .done()
  ;
} );

// Or using the shortcut
doTest.add( 'App interface', test => {
  test()
    .isObject( 'fail', 'Callback data', data )
    .done()
  ;
} );

( [callback] )

Run the next test from the queue. Optionally run a callback function before the next test.

See example above.

( )

Alias to dotest.exit(). Works similar to .done() where it ends the test, but .exit() also ends the whole script.

test()
  .isArray( 'fail', 'data', [] )
  .exit()
;

( message )

Output 'info' log line.

The message can be of any type. When it is not a string, the type is written instead and the full value of message dumped right below.

test()
  .info( { hello: 'world' } )
  .done()
;

// Output:
// info    Object
// { hello: 'world' }

( message )

Output 'good' log line.

The message can be of any type. When it is not a string, the type is written instead and the full value of message dumped right below.

test()
  .good( 'It works great' )
  .done()
;

// Output:
// good    It works great

( message )

Output 'warn' log line.

The message can be of any type. When it is not a string, the type is written instead and the full value of message dumped right below.

test()
  .warn( 'Hmm something odd happened' )
  .done()
;

// Output:
// warn    Hmm something odd happend

( message, [dontCount] )

Output 'FAIL' log line.

The message can be of any type. When it is not a string, the type is written instead and the full value of message dumped right below.

test()
  .fail( 'We have a problem' )
  .done()
;

// Output:
// FAIL    We have a problem

( err, [dontCount] )

Output 'ERROR' log line with dump and stack trace.

const err = new Error( 'Oops' );

test()
  .error( err )
  .done()
;

// Output:
// ERROR   Oops
//
// [Error: Oops]
// ...

( level, what, input )

Check if input is an instance of Error.

test()
  .isError( 'fail', 'My data', data )
  .done()
;

( level, what, input )

Check if input is an instance of Object.

test()
  .isObject( 'fail', 'My data', data )
  .done()
;

( level, what, input )

Check if input is an instance of Array.

test()
  .isArray( 'fail', 'My data', data )
  .done()
;

( level, what, input )

Check if input is a string.

test()
  .isString( 'fail', 'My data', data )
  .done()
;

( level, what, input )

Check if input is a number.

test()
  .isNumber( 'fail', 'My data', data )
  .done()
;

( level, what, input )

Check if input is undefined.

function ( err, data ) {
  test()
    .isUndefined( 'warn', 'My data', data )
    .done()
  ;
}

( level, what, input )

Check if input is null.

function ( err, data ) {
  test()
    .isNull( 'warn', 'My data', data )
    .done()
  ;
}

( level, what, input )

Check if input is NaN.

function ( err, data ) {
  test()
    .isNaN( 'warn', 'My data', data )
    .done()
  ;
}

( level, what, input )

Check if input is a boolean.

test()
  .isBoolean( 'fail', 'My data', data )
  .done()
;

( level, what, input )

Check if input is an instance of Function or AsyncFunction.

test()
  .isFunction( 'fail', 'My data', data )
  .done()
;

( level, what, input )

Check if input is an instance of Function.

test()
  .isFunction( 'fail', 'My data', data )
  .done()
;

( level, what, input )

Check if input is an instance of AsyncFunction.

test()
  .isAsyncFunction( 'fail', 'My data', data )
  .done()
;

( level, what, input )

Check if input is an instance of Date.

const myDate = new Date();

test()
  .isDate( 'fail', 'My data', myDate )
  .done()
;

( level, what, one, two )

Check if one is exactly of the same type and value as two.

test()
  .isExactly( 'fail', 'My data', 'foo', 'bar' )
  .done()
;

( level, what, one, operator, two )

Check if the two values meet the condition.

test()
  .isCondition( 'fail', 'My data', 1, '<', 2 )
  .done()
;

( level, what, input )

Check if input is undefined, null, or an empty string, object, array or Error. In case of Error the input.message and Object.keys( input ) are checked.

// Object is empty
test()
  .isEmpty( 'fail', 'My data', {} )
  .done()
;

( level, what, input )

Check if input is not undefined, null, or an empty string, object, array or Error. In case of Error the input.message and Object.keys( input ) are checked.

// Object is not empty
test()
  .isNotEmpty( 'fail', 'My data', { foo: 'bar' } )
  .done()
;

This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

In jurisdictions that recognize copyright laws, the author or authors of this software dedicate any and all copyright interest in the software to the public domain. We make this dedication for the benefit of the public at large and to the detriment of our heirs and successors. We intend this dedication to be an overt act of relinquishment in perpetuity of all present and future rights to this software under copyright law.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

For more information, please refer to https://unlicense.org

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