Gradle Espresso - Task connectedProductFlavorBuildTypeAndroidTest not found in root project

Issue

My build.gradle is like this:

productFlavors {
        mainFlavor {
            // ...
        }
    }

    buildTypes {
        debug {
             // ...
        }
        buildType1 {// I write mock data classes for Espresso tests here
             // ...
        }
    }

./gradlew tasks includes connectedMainFlavorDebugAndroidTest but not connectedMainFlavorBuildType1AndroidTest.
Why?

I want to specifically run Espresso tests for buildType1 only.
I'm not the owner of the project, I'm not allowed to use either mainFlavorDebug or someNewFlavorDebug to write Espresso tests

Solution

The answer from official documentation:

By default, all tests run against the debug build type. You can change this to another build type by using the testBuildType property in your module-level build.gradle file. For example, if you want to run your tests against your "staging" build type, edit the file as shown in the following snippet.

android { ... testBuildType "staging" }

Answered By - ericn