1/*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.google.android.mail.common.base;
18
19import android.test.suitebuilder.annotation.SmallTest;
20
21import junit.framework.TestCase;
22
23@SmallTest
24public class StringUtilTest extends TestCase {
25    public void testUnescapeHtml() {
26        // Unicode Character 'KISSING CAT FACE WITH CLOSED EYES' (U+1F63D)
27        final String unescaped1 = StringUtil.unescapeHTML("😽");
28        assertEquals(unescaped1, "\uD83D\uDE3D");
29
30        // Unicode Character 'KISSING CAT FACE WITH CLOSED EYES' (U+1F63D)
31        final String unescaped2 = StringUtil.unescapeHTML("😽");
32        assertEquals(unescaped2, "\uD83D\uDE3D");
33
34        // Unpaired surrogate, should not be converted
35        final String unescaped3 = StringUtil.unescapeHTML("&#D83D;");
36        assertEquals(unescaped3, "&#D83D;");
37
38        // Paired surrogate, also should not be converted according to HTML spec
39        final String unescaped4 = StringUtil.unescapeHTML("&#D83D;&#DE3D;");
40        assertEquals(unescaped4, "&#D83D;&#DE3D;");
41
42        // Named entity lowercase
43        final String unescaped5 = StringUtil.unescapeHTML("α");
44        assertEquals(unescaped5, "\u03B1");
45
46        // Named entity uppercase
47        final String unescaped6 = StringUtil.unescapeHTML("Α");
48        assertEquals(unescaped6, "\u0391");
49    }
50}
51