JS: move more test to box tests

js/js.translator/testData/box/number/byteAndShortConversions.kt

@@ -0,0 +1,45 @@
+package foo
+
+fun testShortConversions(c: Short): Boolean {
+    if (c.toDouble() != 3.0) {
+        return false
+    }
+    if (c.toFloat() != 3.toFloat()) {
+        return false
+    }
+    if (c.toByte() != 3.toByte()) {
+        return false
+    }
+    if (c.toInt() != 3) {
+        return false
+    }
+    if (c.toShort() != 3.toShort()) {
+        return false
+    }
+    return true
+}
+
+fun testByteConversions(c: Byte): Boolean {
+    if (c.toDouble() != 3.0) {
+        return false
+    }
+    if (c.toFloat() != 3.toFloat()) {
+        return false
+    }
+    if (c.toByte() != 3.toByte()) {
+        return false
+    }
+    if (c.toInt() != 3) {
+        return false
+    }
+    if (c.toShort() != 3.toShort()) {
+        return false
+    }
+    return true
+}
+
+fun box(): String {
+    if (!testShortConversions(3)) return "fail: testShortConversions"
+    if (!testByteConversions(3)) return "fail: testByteConversions"
+    return "OK"
+}