[K/N] Add test for inter-module suspend function override

compiler/testData/codegen/box/coroutines/multiModule/inheritFromAnotherModule.kt

@@ -0,0 +1,49 @@
+// WITH_STDLIB
+// WITH_COROUTINES
+
+// MODULE: lib
+// FILE: lib.kt
+
+class AAA
+class ZZZ
+
+open class A {
+    // function signatures are chosen in a way, that their order for Native will change, if suspend is not lowered correctly
+    open suspend fun f(x:Int) = 1
+    open fun f(x:AAA) = 2
+    open fun f(x:ZZZ) = 3
+}
+
+// MODULE: main(lib)
+// FILE: main.kt
+
+import kotlin.coroutines.*
+import helpers.*
+
+
+class ImplementA : A(){
+    override suspend fun f(x:Int) = 4
+}
+
+class NotImplementA : A() {}
+
+
+fun runF(x: A, f: suspend A.() -> Int) : Int {
+    var res: Int = -1
+    f.startCoroutine(x, handleResultContinuation {
+        res = it
+    })
+    return res
+}
+
+fun box() : String {
+    val x = if (true) ImplementA() else A() // to avoid devirtualization
+    if (x.f(AAA()) != 2) return "FAIL 1"
+    if (x.f(ZZZ()) != 3) return "FAIL 2"
+    if (runF(x, { f(1) }) != 4) return "FAIL 3"
+    val y = if (true) NotImplementA() else A() // to avoid devirtualization
+    if (y.f(AAA()) != 2) return "FAIL 4"
+    if (y.f(ZZZ()) != 3) return "FAIL 5"
+    if (runF(y, { f(1) }) != 1) return "FAIL 6"
+    return "OK"
+}