JS: move more test to box tests

js/js.translator/testData/box/jsCode/label.kt

@@ -0,0 +1,59 @@
+package foo
+
+fun testLabelledBlock() {
+    var c: Int = 0
+
+    js("""
+        block: {
+            c = 1;
+            break block;
+            c = 2;
+        }
+    """)
+
+    assertEquals(1, c, "testLabelledBlock")
+}
+
+fun testBreakInFor() {
+    var c: Int = 0
+
+    js("""
+        outer: for (var i = 0; i < 10; i++) {
+            for (var j = 0; j < 10; j++) {
+                if (i === 1) {
+                    break outer;
+                }
+
+                c += 1;
+            }
+        }
+    """)
+
+    assertEquals(10, c, "testBreakInFor")
+}
+
+fun testContinueInFor() {
+    var c: Int = 0
+
+    js("""
+        outer: for (var i = 0; i < 10; i++) {
+            for (var j = 0; j < 10; j++) {
+                if (i >= 1) {
+                    continue outer;
+                }
+
+                c += 1;
+            }
+        }
+    """)
+
+    assertEquals(10, c, "testContinueInFor")
+}
+
+fun box(): String {
+    testLabelledBlock()
+    testBreakInFor()
+    testContinueInFor()
+
+    return "OK"
+}