[SalesForce] How to cover the test class for external objects Query in test class

Can anyone suggest me how to cover the SOQL code line in test class.
Due to Query failing i am not able to increase the code coverage to 75% minimum for class.
Suggest me how can i achieve this .
Is there any other way to increase the code coverage?

Best Answer

Mocking the external object API calls is not properly supported by SFDC yet. However, there is a pretty neat workaround by Graham Barnard. It does require some redesign of your External Object queries and it will not give you 100% test coverage (because of the isRunnningTest() statement). But it will allow you to functionally test the code that calls the external objects

http://grahambarnard.com/development/2016/02/08/mocking-external-objects/

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