tests: Update box tests (1050294:id)

backend.native/tests/external/codegen/box/enum/enumCompanionInit.kt

@@ -0,0 +1,46 @@
+var result = ""
+
+enum class E(a: String) {
+    X("x"),
+    Y("y");
+
+    init {
+        result += "E.init($a);"
+    }
+
+    companion object {
+        init {
+            result += "E.companion.init;"
+            val value = E.values()[0].name
+            result += "$value;"
+        }
+    }
+}
+
+enum class F(a: String) {
+    X("x"),
+    Y("y");
+
+    init {
+        result += "F.init($a);"
+    }
+
+    companion object {
+        init {
+            result += "F.companion.init;"
+        }
+
+        fun foo() {
+            result += "F.foo();$X;"
+        }
+    }
+}
+
+fun box(): String {
+    val y = E.Y
+    result += "${y.name};"
+    F.foo()
+    if (result != "E.init(x);E.init(y);E.companion.init;X;Y;F.init(x);F.init(y);F.companion.init;F.foo();X;") return "fail: $result"
+
+    return "OK"
+}