JS backend: tests for char type

js/js.translator/testData/range/cases/rangeEquals.kt

@@ -0,0 +1,12 @@
+package foo
+
+fun box(): String {
+
+     assertEquals(true, 2..1 == 4..2, "2..1 == 4..2")
+     assertEquals(true, 2L..1L == 318238945677L..2L, "2L..1L == 318238945677L..2L")
+     assertEquals(false, (2..1): Any == (4L..2L): Any, "(2..1): Any == (4L..2L): Any")
+     assertEquals(true, 'B'..'A' == 'W'..'B', "'B'..'A' == 'W'..'B'")
+     assertEquals(false, (2..1): Any == ('B'..'A'): Any, "(2..1): Any == ('B'..'A'): Any")
+
+    return "OK"
+}