Can I still use the

chai

test helper in a Pulumi unit test?

network.name.apply((name) => {
            name.should.equal('empty_network')
        });

results in my test passing, but still got this stack:

(node:50206) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'should' of undefined
    at /Users/ringods/Projects/cumundi/libraries/packages/iac-gcp/test/network.spec.ts:60:18
    at /Users/ringods/Projects/cumundi/libraries/node_modules/@pulumi/pulumi/output.js:249:35
    at Generator.next (<anonymous>)
    at /Users/ringods/Projects/cumundi/libraries/node_modules/@pulumi/pulumi/output.js:21:71
    at new Promise (<anonymous>)
    at __awaiter (/Users/ringods/Projects/cumundi/libraries/node_modules/@pulumi/pulumi/output.js:17:12)
    at applyHelperAsync (/Users/ringods/Projects/cumundi/libraries/node_modules/@pulumi/pulumi/output.js:228:12)
    at /Users/ringods/Projects/cumundi/libraries/node_modules/@pulumi/pulumi/output.js:182:65
    at processTicksAndRejections (internal/process/task_queues.js:97:5)

What kind of Pulumi unit test is this? Are you following the patterns in https://www.pulumi.com/docs/guides/testing/unit/, or something else? Note that the error here is that

name

is undefined - is that "expected" based on the surrounding code?

@white-balloon-205 this is a Mocha test. Within the

it

block, I started from this:

network.name.apply((name) => {
    if (name == 'empty_network') {
        done()
    } else {
        done(new Error(`name is ${name}`))
    }
});

But this if/else block pattern is quite verbose for each test, so I tried to mix in

chai

. First revision:

network.name.apply((name) => {
    name.should.equal('empty_network')
});

I dropped the

done

argument from the

it

function callback. This works. But an

Output

is

Promise

-like, so I tried the

eventually

feature from

chai

in a second revision:

network.name.should.eventually.equal('empty_network')

But here I get a failure:

TypeError: {} is not a thenable.