Node.js · Theory

Unit Testing in Node.js

Theory

723/723

Unit Testing in Node.js

Unit Testing (node js) is a Node.js topic. In plain words you use it for a short Unit Testing node js example in a script or API on localhost. Don’t start with a slogan — start with that picture.

Smallest example: the smallest Unit Testing node js example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Unit Testing (node js).

From the example next to this theory — Unit Testing in Node.

Trap — only saying “Unit Testing node js” with no example. Fix that before you talk about advanced Node.js.

Viva: what is Unit Testing (node js)? Then show the smallest Unit Testing node js example you can type. Then name the trap.

Exam tip

What is Unit Testing (node js)? Show this: the smallest Unit Testing node js example you can type. Trap: only saying “Unit Testing node js” with no example.

Example

// Unit Testing in Node.js
const users = [
  { id: 1, name: "Asha" },
  { id: 2, name: "Ravi" },
];

function findUser(id) {
  return users.find((u) => u.id === id) ?? null;
}

console.log(findUser(2));
console.log(users.map((u) => u.name));

Unit Testing in Node.js: find user 2, then list names. Say both prints.

Short notes

DefUnit Testing (node js) — a short Unit Testing node js example in a script or API on localhost.
Rulethe smallest Unit Testing node js example you can type
Traponly saying “Unit Testing node js” with no example
Usea script or API on localhost

Node.js · Theory

Unit Testing in Node.js

← All stacks

Theory

723/723

Unit Testing in Node.js

Unit Testing (node js) is a Node.js topic. In plain words you use it for a short Unit Testing node js example in a script or API on localhost. Don’t start with a slogan — start with that picture.

Smallest example: the smallest Unit Testing node js example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Unit Testing (node js).

From the example next to this theory — Unit Testing in Node.

Trap — only saying “Unit Testing node js” with no example. Fix that before you talk about advanced Node.js.

Viva: what is Unit Testing (node js)? Then show the smallest Unit Testing node js example you can type. Then name the trap.

Exam tip

What is Unit Testing (node js)? Show this: the smallest Unit Testing node js example you can type. Trap: only saying “Unit Testing node js” with no example.

Example

// Unit Testing in Node.js
const users = [
  { id: 1, name: "Asha" },
  { id: 2, name: "Ravi" },
];

function findUser(id) {
  return users.find((u) => u.id === id) ?? null;
}

console.log(findUser(2));
console.log(users.map((u) => u.name));

Unit Testing in Node.js: find user 2, then list names. Say both prints.

Short notes

DefUnit Testing (node js) — a short Unit Testing node js example in a script or API on localhost.
Rulethe smallest Unit Testing node js example you can type
Traponly saying “Unit Testing node js” with no example
Usea script or API on localhost

Unit Testing in Node.js

Example

Short notes

Questions

Unit Testing in Node.js

Example

Short notes

Questions