Context receiver mocking with mock

ContextTest.kt

package com.myexample

import io.mockk.every
import io.mockk.mockk
import io.mockk.verify
import org.junit.Test
import kotlin.test.assertEquals

interface CallContext

class MyClass {
    context(CallContext)
    fun myMethod(a: Int): Int = a
}

class ContextMockTest {
    private val myClassMock: MyClass = mockk()

    @Test
    fun mockContextWorks() {
        every {
            with(any<CallContext>()) {
                myClassMock.myMethod(any())
            }
        } returns 123

        val context = object : CallContext { }

        with(context) {
            assertEquals(123, myClassMock.myMethod(1))
        }

        verify {
            with(any<CallContext>()) {
                myClassMock.myMethod(1)
            }
        }
    }
}