JS: move expressions test to box tests

js/js.translator/testData/box/expression/invoke/inheritFromFunctionTraits.kt

@@ -0,0 +1,40 @@
+/**
+ * NOTE: this test originally checked that values of classes inheriting from functions could be invoked as functions.
+ * However, Function{n} / ExtensionFunction{n} classes were incompatible with JS functions our lambdas were compiled to.
+ * This led to runtime errors (see KT-7692), so the test is temporarily disabled.
+ *
+ * TODO: support inheritance from function types and re-enable this test
+ * NOTE: inheritance from extension function is forbidden now
+ */
+
+package foo
+
+class Bar/* : Function0<String>*/ {
+    operator fun invoke() = "Bar.invoke()"
+}
+
+class Baz/* : Function2<Int, Boolean, String>*/ {
+    operator fun invoke(i: Int, b: Boolean) = "Baz.invoke($i, $b)"
+}
+
+class Mixed/* :
+        Function1<Int, String>,
+        Function2<Int, Boolean, String>*/
+{
+    operator fun invoke(i: Int) = "Mixed.invoke($i)"
+    operator fun invoke(i: Int, b: Boolean) = "Mixed.invoke($i, $b)"
+}
+
+fun box(): String {
+    val bar = Bar()
+    val baz = Baz()
+    val mixed = Mixed()
+
+    assertEquals("Bar.invoke()", bar())
+    assertEquals("Baz.invoke(2, false)", baz(2, false))
+
+    assertEquals("Mixed.invoke(45)", mixed(45))
+    assertEquals("Mixed.invoke(552, true)", mixed(552, true))
+
+    return "OK"
+}