A small, copy-pastable, unit testing framework for Node JS.

test.js

// Lightweight testing framework
// Runs through a nested JS Object until it
// finds an entry with a function value.
// Otherwise, recursively cycle through the list, adding
// descriptive tags along the way
function run(tests) {
    const greenText = text => `\x1b[32m${text}`;
    const redText   = text => `\x1b[31m${text}`;
    const resetText = text => `\x1b[0m${text}`;

    // The Test Assertion
    function expect(condition, result) {
    
        if (condition === result) {
            console.log(greenText(`TRUE`));
            return;
        }
        console.log(redText(`FALSE
\tExpected: ${condition}
\tReceived: ${result}`));
    }

    function runBlock(block, tests) {
        Object.entries(tests).forEach(([desc, value]) => {
            if (typeof value === 'function') {
                if (block === "") {
                    console.log(resetText(desc));
                } else {
                    console.log(resetText(`${block} - ${desc}`));
                }
                value({ expect });
            } else {
                runBlock(desc, value)
            }
        });
    }

    runBlock("", tests);
}

module.exports = run;