Unicode_test.cpp revision c412dcb3eb259458905aae9a2f5109c59c9548c0
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
23namespace android {
24
25class UnicodeTest : public testing::Test {
26protected:
27    virtual void SetUp() {
28    }
29
30    virtual void TearDown() {
31    }
32};
33
34TEST_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
44TEST_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
55TEST_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
66TEST_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
77TEST_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
89TEST_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