Using serverless-mocha-plugin to test dynamic endpoint - node.js

Question

I am creating an API application in NodeJS using the Serverless framework. I have installed the serverless-mocha-plugin and am trying to create some unit tests for my functions.
In my serverless.yml file, I have the following endpoints:
...
equipmentGetAll:
handler: ./api/equipment/equipment.getAll
events:
- http:
path: equipment
method: get
cors: true
equipmentGetOne:
handler: ./api/equipment/equipment.getOne
events:
- http:
path: equipment/{po_number}
method: get
cors: true
...
When testing the getAll endpoint, I use the following test which passes successfully. I have verified it works by logging the response to the console.
'use strict';
// tests for equipmentGetAll
// Generated by serverless-mocha-plugin
const mochaPlugin = require('serverless-mocha-plugin');
const expect = mochaPlugin.chai.expect;
let wrapped = mochaPlugin.getWrapper('equipmentGetAll', '/api/equipment/equipment.js', 'getAll');
describe('equipmentGetAll', () => {
before((done) => {
done();
});
it('should get all Equipment', () => {
return wrapped.run({po_number:117}).then((response) => {
expect(response.statusCode).to.be.equal(200);
expect(response.body.length).to.be.greaterThan(0);
});
});
});
Similarly, for the getOneendpoint, I am (for now) doing a very similar test:
'use strict';
// tests for equipmentGetOne
// Generated by serverless-mocha-plugin
const mochaPlugin = require('serverless-mocha-plugin');
const expect = mochaPlugin.chai.expect;
let wrapped = mochaPlugin.getWrapper('equipmentGetOne', '/api/equipment/equipment.js', 'getOne');
describe('equipmentGetOne', () => {
before((done) => {
done();
});
it('should get one single Equipment', () => {
return wrapped.run({}).then((response) => {
expect(response.statusCode).to.be.equal(200);
expect(response.body.length).to.be.equal(1);
});
});
});
The Problem
The current response I'm receiving for getOne is:
{
statusCode: 500,
headers: { 'Content-Type': 'text/plain' },
body: 'Cannot read property \'po_number\' of undefined'
}
Due to the fact that the path for getOne from serverless.yml is equipment/{po_number} rather than just equipment/.
What is the proper way to pass the path value for the test?
A sample call would hit endpoint my-api-endpoint.com/equipment/117 and return the Equipment with po_number 117. This works properly when testing with POSTMan, but how can I make it work with mocha-serverless-plugin?

Answer 1

To pass data to lambda you should use
wrappedLambda.run({body: "String, not Object"})
To pass queryStringParametr to lambda you should use wrappedLambda.run({queryStringParameters: {a: "first",b:"second"}})
To pass pathParameters to lambda you should use
wrappedLambda.run({pathParameters: {a: "first", b:"second"})
Simple example for testing post method
context('save flashcard', () => {
before((done) => {
done();
});
it('save flashcard successfully', () => {
return saveFlashcard.run({body: correctInput})
.then((response) => {
const body = JSON.parse(response.body);
expect(body).to.have.property('_id')
})
});
});
this body will be located inside event object.

Answer 2

To pass body you need to do something like this
{
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({
releaseDate: 2231213213,
title: 'sfsdf',
authorName: 'L'
})
}