Test gRPC endpoints using JS

First, create a file to contain your test suite, such as tests.js. Then, within the file:

1. Import functions from the chai assertion library as well as our helper library:

   const { expect } = require('chai');
   const { call, test, runTests } = require('grpcmd-script/test');

2. Define your tests containing gRPC requests and response assertions:

   test('UnaryMethod', () => {
       const res = call({
           address: 'localhost:50051',
           method: 'UnaryMethod',
           messages: [
               {
                   name: 'Bob'
               }
           ]
       });
   
       expect(res.messages).to.have.length(1);
       expect(res.messages).to.deep.equal([
           {
               message: 'Hello, Bob!'
           }
       ]);
       expect(res.trailers).to.include({
           'status-code': '0'
       });
   });

3. Finally, run all the tests:

   runTests();

$

grpc-script ./tests.js

┌──────────┬────────┬────────┬───────┬─────────┬──────┐
│   File   │ Failed │ Passed │ Total │ Percent │ Time │
├──────────┼────────┼────────┼───────┼─────────┼──────┤
│ tests.js │      0 │      1 │     1 │ 100.00% │ 25ms │
└──────────┴────────┴────────┴───────┴─────────┴──────┘

Errors

In case of any errors, the assertion details will be printed along with any console output.

$

grpc-script ./tests.js

✕ UnaryMethod

    AssertionError: expected { ‘status-code’: ‘0’ } to have property ‘status-code’ of ‘1’, but got ‘0’  
       ├──at tests.js:21:36(48)
       └──at tests.js:26:9(29)

console.log output for debugging

┌──────────┬────────┬────────┬───────┬─────────┬──────┐
│   File   │ Failed │ Passed │ Total │ Percent │ Time │
├──────────┼────────┼────────┼───────┼─────────┼──────┤
│ tests.js │      1 │      0 │     1 │   0.00% │ 25ms │
└──────────┴────────┴────────┴───────┴─────────┴──────┘