JS backend: testFiles -> testData

js/js.translator/testData/operatorOverloading/cases/overloadUnaryOperationsViaExtensionFunctions.kt

@@ -0,0 +1,13 @@
+package foo
+
+class A(val c: Int) {
+}
+
+
+fun A.inc() = A(5)
+fun A.dec() = A(10)
+
+fun box(): Boolean {
+    var a = A(1)
+    return ((++a).c == 5 && (a++).c == 5 && (--a).c == 10 && (a--).c == 10)
+}