JS backend: added tests for infix calls.

#KT-3998   in progress
 #EA-56241 in progress

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

@@ -0,0 +1,23 @@
+// EA-56241
+package foo
+
+class A(val v: Int)
+
+val times = { A.(a: Int) -> this.v * a }
+
+fun test(div: A.(Int) -> Int) = A(20) / 4
+
+fun assertEquals<T>(expected: T, actual: T) {
+    if (expected != actual) throw Exception("expected: $expected, actual: $actual")
+}
+
+fun box(): String {
+    val compareTo = { A.(a: A) -> this.v - a.v }
+
+    assertEquals(28, A(4) * 7)
+    assertEquals(5, test { this.v / it })
+    assertEquals(false, A(49) <= A(7))
+    assertEquals(true, A(5) > A(1))
+
+    return "OK"
+}