Add suffix '.html' in PROXIES value

I have unit tests in Angular 4. There is 1 component, which has iframe. The sourse of this iframe might be different, but the first part of the path is the same for each iframe.

so, it might also be /htm/dialogs/SelectDialog1, /htm/dialogs/SelectDialog2 etc.

When I test it, it tries to load this file /htm/dialogs/SelectDialog So, that's why I added this configuration in karma.config.js

proxies: {
'/htm/dialogs/': '/base/mock-server/dialogs/'
}
The main problem here that it tries to load this page http://localhost:9876/base/mock-server/dialogs/SelectDialog

However, according to my folder structure, it has to be http://localhost:9876/base/mock-server/dialogs/SelectDialog/index.html

Actually, I can change structure of folders on my mock-server.

Could you please help me how to add '/index.html'. It should be something like this

proxies: {
'/htm/dialogs/': '/base/mock-server/dialogs/****/index.html'
}

Review the proxy configuration entry shown in karma.config.js and trace how the iframe request is mapped. Verify the request for /htm/dialogs/SelectDialog against the mock-server layout; done means the proxy can resolve varying dialog paths to the corresponding index.html page.

Written by the indexing model from the issue text.