JS: move expressions test to box tests

js/js.translator/testData/box/dynamic/getByBrackets.kt

@@ -0,0 +1,36 @@
+package foo
+
+fun box(): String {
+    assertEquals(42, bar["num"])
+    assertEquals("ok!", bar["str"])
+    assertEquals(bar.obj, bar["obj"])
+    assertEquals("zero", bar[0])
+    assertEquals("e", bar[0][1])
+    assertEquals(0, bar[5])
+    assertEquals("1.one", bar[1].one)
+    assertEquals("bar.obj", bar.obj["name"])
+    assertEquals("bar.obj", bar["obj"]["name"])
+    assertEquals("baz", baz["name"])
+    assertEquals(0, baz["length"])
+    assertEquals("is", arr["0"].it)
+    assertEquals("object", arr["0"][1])
+    assertEquals("is", arr[0]["it"])
+    assertEquals(undefined, arr[2])
+    assertEquals(-2, arr[3])
+    assertEquals(5, arr["length"])
+
+    assertEquals(undefined, bar["num0"])
+    assertEquals(undefined, bar["STR"])
+    assertEquals(undefined, bar[2])
+    assertEquals(undefined, bar.obj["foo"])
+    assertEquals(undefined, bar["obj"].foo)
+    assertEquals(undefined, bar["obj"]["foo"])
+    assertEquals(undefined, baz[3])
+    assertEquals(undefined, baz["function"])
+    assertEquals(undefined, arr["6"])
+    assertEquals(undefined, arr[7])
+    assertEquals(undefined, arr[10])
+    assertEquals(undefined, arr["name"])
+
+    return "OK"
+}