1 /*
2 * Copyright (C) 2010 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
17 #define LOG_TAG "Unicode_test"
18 #include <utils/Log.h>
19 #include <utils/Unicode.h>
20
21 #include <gtest/gtest.h>
22
23 namespace android {
24
25 class UnicodeTest : public testing::Test {
26 protected:
SetUp()27 virtual void SetUp() {
28 }
29
TearDown()30 virtual void TearDown() {
31 }
32 };
33
TEST_F(UnicodeTest,UTF8toUTF16ZeroLength)34 TEST_F(UnicodeTest, UTF8toUTF16ZeroLength) {
35 ssize_t measured;
36
37 const uint8_t str[] = { };
38
39 measured = utf8_to_utf16_length(str, 0);
40 EXPECT_EQ(0, measured)
41 << "Zero length input should return zero length output.";
42 }
43
TEST_F(UnicodeTest,UTF8toUTF16ASCIILength)44 TEST_F(UnicodeTest, UTF8toUTF16ASCIILength) {
45 ssize_t measured;
46
47 // U+0030 or ASCII '0'
48 const uint8_t str[] = { 0x30 };
49
50 measured = utf8_to_utf16_length(str, sizeof(str));
51 EXPECT_EQ(1, measured)
52 << "ASCII glyphs should have a length of 1 char16_t";
53 }
54
TEST_F(UnicodeTest,UTF8toUTF16Plane1Length)55 TEST_F(UnicodeTest, UTF8toUTF16Plane1Length) {
56 ssize_t measured;
57
58 // U+2323 SMILE
59 const uint8_t str[] = { 0xE2, 0x8C, 0xA3 };
60
61 measured = utf8_to_utf16_length(str, sizeof(str));
62 EXPECT_EQ(1, measured)
63 << "Plane 1 glyphs should have a length of 1 char16_t";
64 }
65
TEST_F(UnicodeTest,UTF8toUTF16SurrogateLength)66 TEST_F(UnicodeTest, UTF8toUTF16SurrogateLength) {
67 ssize_t measured;
68
69 // U+10000
70 const uint8_t str[] = { 0xF0, 0x90, 0x80, 0x80 };
71
72 measured = utf8_to_utf16_length(str, sizeof(str));
73 EXPECT_EQ(2, measured)
74 << "Surrogate pairs should have a length of 2 char16_t";
75 }
76
TEST_F(UnicodeTest,UTF8toUTF16TruncatedUTF8)77 TEST_F(UnicodeTest, UTF8toUTF16TruncatedUTF8) {
78 ssize_t measured;
79
80 // Truncated U+2323 SMILE
81 // U+2323 SMILE
82 const uint8_t str[] = { 0xE2, 0x8C };
83
84 measured = utf8_to_utf16_length(str, sizeof(str));
85 EXPECT_EQ(-1, measured)
86 << "Truncated UTF-8 should return -1 to indicate invalid";
87 }
88
TEST_F(UnicodeTest,UTF8toUTF16Normal)89 TEST_F(UnicodeTest, UTF8toUTF16Normal) {
90 const uint8_t str[] = {
91 0x30, // U+0030, 1 UTF-16 character
92 0xC4, 0x80, // U+0100, 1 UTF-16 character
93 0xE2, 0x8C, 0xA3, // U+2323, 1 UTF-16 character
94 0xF0, 0x90, 0x80, 0x80, // U+10000, 2 UTF-16 character
95 };
96
97 char16_t output[1 + 1 + 1 + 2 + 1]; // Room for NULL
98
99 utf8_to_utf16(str, sizeof(str), output);
100
101 EXPECT_EQ(0x0030, output[0])
102 << "should be U+0030";
103 EXPECT_EQ(0x0100, output[1])
104 << "should be U+0100";
105 EXPECT_EQ(0x2323, output[2])
106 << "should be U+2323";
107 EXPECT_EQ(0xD800, output[3])
108 << "should be first half of surrogate U+10000";
109 EXPECT_EQ(0xDC00, output[4])
110 << "should be second half of surrogate U+10000";
111 EXPECT_EQ(NULL, output[5])
112 << "should be NULL terminated";
113 }
114
115 }
116