EasyTest

Simple testing framework for JavaScript and TypeScript, written in pure JavaScript.

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Documentation: https://easy.org.ua/

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Core features:

• No need to import it, test, describe or ecpext in your test file. These functions are available globally.
• You can use both js and ts test files in the same project.
• Asynchronous code testing.
• TypeScript testing out of the box.
• Global DOM object for testing HTML objects.
• Built-in coverage tool.
• Verbose or non verbose mode.
• Mock functions.
• Big set of built-in matchers.
• Extend expect function with your own matchers.
• Compatible with codecov report viewer.
• A lot of expects in one test case.
• Setup and Teardown functions (beforeEach, afterEach, beforeAll, afterAll).

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Support for PayPal to serhii@pimenov.com.ua

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Installation

npm install @olton/easytest -D

Usage

To use EasyTest you don't need to import it, test or describe in your test file. Create a test file with *.test.js or *.test.ts extension (for example). You can use both of them in the same project.

function hello() {
    return "Hello"
}

describe(`Common tests suite`, () => {
    it(`says hello`, () => {
        return expect(hello()).toBe("Hello")
    })
})

test(`Bad test 2 !== 1`, () => {
    return expect(2).toBe(1)
})

Async tests

async function fetchData() {
    return new Promise((resolve) => {
        setTimeout(() => {
            resolve("Data received");
        }, 1000);
    });
}

describe('Async function tests', async () => {
    it('should return data after 1 second', async () => {
        const data = await fetchData();
        return expect(data).toBe("Bad Data");
    });
});

Update package.json to run tests with easytest command.

{
    "scripts": {
        "test": "easytest"
    }
}

Functions

• describe - create test suite
• it - create a test case
• expect - create assertion
• beforeEach - run before each test case
• afterEach - run after each test case
• beforeAll - run before all test cases
• afterAll - run after all test cases
• test - create simple test
• mocker - create mock function
• DOM - create DOM object (not global)

Matchers

EasyTest contains a big set of built-in matchers:

• A simple comparison
• A strong comparison
• Type checking
• Number checking
• String checking
• Array checking
• Object checking
• Color checking
• IP, Email, Url checking
• JSON, XML checking
• Date, RegExp, Symbol checking
• Function checking
• HTML element checking
• and more...

TypeScript

To use EasyTest with TypeScript you need to install tsx package.

npm install tsx -D

and then

{
    "scripts": {
        "test": "cross-env NODE_OPTIONS=\"--import tsx\" easytest"
    }
}

cross-env

Run scripts that set and use environment variables across platforms.

npm install --save-dev cross-env

Configuration

To configure EasyTest you need to create a easytest.json file in the root of your project. Also, you can use argument --config=fileName to specify a configuration file.

{
    "scripts": {
        "test": "easytest --config=myconfig.json"
    }
}

EasyTest designed as a config-free testing framework. But you can configure it to your needs. The default values are:

{
  "include": ["**/*.spec.{t,j}s", "**/*.spec.{t,j}sx", "**/*.test.{t,j}s", "**/*.test.{t,j}sx"],
  "exclude": ["node_modules/**"],
  "coverage": false,
  "verbose": false,
  "dom": false,
  "test": "*",  
  "report": {
    "type": "lcov",
    "dir": "coverage"
  }
}

You can use cli arguments to configure EasyTest:

• --config=file_name.json - path to the configuration file.
• --coverage - enable coverage tool.
• --verbose - enable verbose mode.
• --include=**/*.spec.{t,j}s - include files for testing.
• --exclude=node_modules/** - exclude files from testing.
• --test=test_name - execute only tests whose name contains value.
• --dom - enable global DOM.

{
  "scripts": {
    "test": "easytest --coverage --verbose --include=**/core.spec.{t,j}s"
  }
}

DOM Environment

EasyTest has a global DOM object for testing HTML objects (we use JSDOM to create DOM environment). To enable global DOM, you need to use parameter --dom in the command line, or set dom to true in the configuration file.

{
    "scripts": {
        "test": "easytest --dom"
    }
}

Extend expect

You can extend the expect function with your own matchers.

import {Expect} from "@olton/easytest";

class MyExpect extends Expect {
    toBeEven() {
        let received = this.received
        let result = received % 2 === 0
        if (!result) {
            this.message = `Expected ${received} to be even`
        }
    }
}

const expect = (received) => new MyExpect(received)

test(`Custom expect`, () => {
    expect(2).toBeEven()
})

License

EasyTest licensed under MIT license.

Contributing

Bug Reports & Feature Requests

Use issue tracker to report bugs or request new features.

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Copyright

© 2024 Serhii Pimenov. All rights reserved.