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if i am instantiating a second aws provider, e.g.:

```
const otherProvider = new aws.Provider("otherProvider")
```

do i have to do anything special to run mocha unit tests on things that use that provider?

I am getting:

```
(node:14086) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'invoke' of undefined
    at /Users/dustinfarris/Work/DLP/pulumi-ucboitlake/node_modules/@pulumi/pulumi/runtime/invoke.js:63:114
```

cc <@UDEJ1F5SQ>

Looks like <https://github.com/pulumi/pulumi/issues/2838>. Are you using a "data source" function?

Your tests still execute successfully, yes?

the test executes, not sure how successful yet, i just had a simple 1+1 assertion

so looks like this is not related to the fact that i am using a custom instance of aws.Provider

what are you doing in your own project?  stubbing out the data source function with something like sinon?