Minor. Add more tests

compiler/testData/codegen/box/inlineClasses/checkBoxingForComplexClassHierarchyGeneric.kt

@@ -0,0 +1,51 @@
+// WITH_STDLIB
+// WORKS_WHEN_VALUE_CLASS
+// LANGUAGE: +ValueClasses, +GenericInlineClassParameter
+
+OPTIONAL_JVM_INLINE_ANNOTATION
+value class IC<T: Int>(val x: T)
+
+interface I<T> {
+    fun foo(t: T): T
+}
+
+interface I2: I<IC<Int>>
+
+open class A<T> {
+    fun foo(t: T): T =
+        if (t is IC<*>)
+            IC(20 + t.x) as T
+        else
+            t
+}
+
+open class B: A<IC<Int>>()
+class C: I2, B()
+
+fun box(): String {
+    val ic = IC(10)
+    val i: I<IC<Int>> = C()
+    val i2: I2 = C()
+    val a: A<IC<Int>> = C()
+    val b: B = C()
+    val c: C = C()
+
+    val fooI = i.foo(ic).x
+    if (fooI != 30) return "Fail I"
+
+    // Test calling abstract fake override methods
+    // with signature specialized by inline class
+    val fooI2 = i2.foo(ic).x
+    if (fooI2 != 30) return "Fail I2"
+
+    val fooA = a.foo(ic).x
+    if (fooA != 30) return "Fail A"
+
+    val fooB = b.foo(ic).x
+    if (fooB != 30) return "Fail B"
+
+    val resC = c.foo(ic).x
+    if (resC != 30) return "Fail C"
+
+    return "OK"
+}