How I do Exclude Android Project Submodule's test from Gradle test

    buildTypes {
        debug {
            //disable crashlytics build id every time for development
            ext.alwaysUpdateBuildId = false

            // Run code coverage reports by default on debug builds.
            testCoverageEnabled = true
        }

        release {
            minifyEnabled true
            shrinkResources true
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
            signingConfig signingConfigs.release
        }
    }

    //publishNonDefault true
    productFlavors {
        beta {
            //applicationIdSuffix ".beta"
            versionNameSuffix "-beta"
            dimension "green"
        }

        production {
            applicationId "com.example"
            dimension "green"
        }
    }

Let's assume that you have build type(debug & release) and flavours(beta & production).

./gradlew testProductionReleaseUnitTest --tests "com.example.*" OR

./gradlew test+{build_type}+{build_flavor}+UnitTest --tests "com.example.*"

This will only execute Production flavour Release build config unit test cases only in the com.example package directory.

Using the above Gradle script you can avoid running test cases in your library projects.