plugins {
    // ...
    id("com.pega.mmock") version <plugin-version>
}


// ...

kotlin {
    // ...
    sourceSets {
        val commonMain by gettting {
            dependencies {
                // ...
                implementation("com.pega.mmock:mmock-runtime:$mmockVersion")
            }
        }
    }
}

package com.example

import com.pega.mmock.GenerateMock

@GenerateMock
interface MyInteface {
    fun myFunction(arg1: Int): Int
}

package com.example

import com.pega.mmock.dsl.any
import com.pega.mmock.dsl.once
import com.pega.mmock.withMMock

class TestClass {
    @Test
    fun exampleTest() = withMMock {
        val myInterface = mock.MyInterface()
        every { myInterface.myFunction(any()) } returns 2

        assertEquals(2, myInterface.myFunction(1))
        
        verify {
            invocation { myInterface.myFunction(any()) } called once
        }   
    }   
}