Kenny Root | ba0165b | 2010-11-09 14:37:23 -0800 | [diff] [blame] | 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: |
| 27 | virtual void SetUp() { |
| 28 | } |
| 29 | |
| 30 | virtual void TearDown() { |
| 31 | } |
Michael Wright | 5bacef3 | 2016-05-09 14:43:31 +0100 | [diff] [blame] | 32 | |
| 33 | char16_t const * const kSearchString = u"I am a leaf on the wind."; |
Kenny Root | ba0165b | 2010-11-09 14:37:23 -0800 | [diff] [blame] | 34 | }; |
| 35 | |
| 36 | TEST_F(UnicodeTest, UTF8toUTF16ZeroLength) { |
| 37 | ssize_t measured; |
| 38 | |
| 39 | const uint8_t str[] = { }; |
| 40 | |
| 41 | measured = utf8_to_utf16_length(str, 0); |
| 42 | EXPECT_EQ(0, measured) |
| 43 | << "Zero length input should return zero length output."; |
| 44 | } |
| 45 | |
| 46 | TEST_F(UnicodeTest, UTF8toUTF16ASCIILength) { |
| 47 | ssize_t measured; |
| 48 | |
| 49 | // U+0030 or ASCII '0' |
| 50 | const uint8_t str[] = { 0x30 }; |
| 51 | |
| 52 | measured = utf8_to_utf16_length(str, sizeof(str)); |
| 53 | EXPECT_EQ(1, measured) |
| 54 | << "ASCII glyphs should have a length of 1 char16_t"; |
| 55 | } |
| 56 | |
| 57 | TEST_F(UnicodeTest, UTF8toUTF16Plane1Length) { |
| 58 | ssize_t measured; |
| 59 | |
| 60 | // U+2323 SMILE |
| 61 | const uint8_t str[] = { 0xE2, 0x8C, 0xA3 }; |
| 62 | |
| 63 | measured = utf8_to_utf16_length(str, sizeof(str)); |
| 64 | EXPECT_EQ(1, measured) |
| 65 | << "Plane 1 glyphs should have a length of 1 char16_t"; |
| 66 | } |
| 67 | |
| 68 | TEST_F(UnicodeTest, UTF8toUTF16SurrogateLength) { |
| 69 | ssize_t measured; |
| 70 | |
| 71 | // U+10000 |
| 72 | const uint8_t str[] = { 0xF0, 0x90, 0x80, 0x80 }; |
| 73 | |
| 74 | measured = utf8_to_utf16_length(str, sizeof(str)); |
| 75 | EXPECT_EQ(2, measured) |
| 76 | << "Surrogate pairs should have a length of 2 char16_t"; |
| 77 | } |
| 78 | |
| 79 | TEST_F(UnicodeTest, UTF8toUTF16TruncatedUTF8) { |
| 80 | ssize_t measured; |
| 81 | |
| 82 | // Truncated U+2323 SMILE |
| 83 | // U+2323 SMILE |
| 84 | const uint8_t str[] = { 0xE2, 0x8C }; |
| 85 | |
| 86 | measured = utf8_to_utf16_length(str, sizeof(str)); |
| 87 | EXPECT_EQ(-1, measured) |
| 88 | << "Truncated UTF-8 should return -1 to indicate invalid"; |
| 89 | } |
| 90 | |
| 91 | TEST_F(UnicodeTest, UTF8toUTF16Normal) { |
| 92 | const uint8_t str[] = { |
| 93 | 0x30, // U+0030, 1 UTF-16 character |
| 94 | 0xC4, 0x80, // U+0100, 1 UTF-16 character |
| 95 | 0xE2, 0x8C, 0xA3, // U+2323, 1 UTF-16 character |
| 96 | 0xF0, 0x90, 0x80, 0x80, // U+10000, 2 UTF-16 character |
| 97 | }; |
| 98 | |
| 99 | char16_t output[1 + 1 + 1 + 2 + 1]; // Room for NULL |
| 100 | |
Sergio Giro | 9de6776 | 2016-07-20 20:01:33 +0100 | [diff] [blame] | 101 | utf8_to_utf16(str, sizeof(str), output, sizeof(output) / sizeof(output[0])); |
Kenny Root | ba0165b | 2010-11-09 14:37:23 -0800 | [diff] [blame] | 102 | |
| 103 | EXPECT_EQ(0x0030, output[0]) |
| 104 | << "should be U+0030"; |
| 105 | EXPECT_EQ(0x0100, output[1]) |
| 106 | << "should be U+0100"; |
| 107 | EXPECT_EQ(0x2323, output[2]) |
| 108 | << "should be U+2323"; |
| 109 | EXPECT_EQ(0xD800, output[3]) |
| 110 | << "should be first half of surrogate U+10000"; |
| 111 | EXPECT_EQ(0xDC00, output[4]) |
| 112 | << "should be second half of surrogate U+10000"; |
| 113 | EXPECT_EQ(NULL, output[5]) |
| 114 | << "should be NULL terminated"; |
| 115 | } |
| 116 | |
Michael Wright | 5bacef3 | 2016-05-09 14:43:31 +0100 | [diff] [blame] | 117 | TEST_F(UnicodeTest, strstr16EmptyTarget) { |
| 118 | EXPECT_EQ(strstr16(kSearchString, u""), kSearchString) |
| 119 | << "should return the original pointer"; |
| 120 | } |
| 121 | |
| 122 | TEST_F(UnicodeTest, strstr16SameString) { |
| 123 | const char16_t* result = strstr16(kSearchString, kSearchString); |
| 124 | EXPECT_EQ(kSearchString, result) |
| 125 | << "should return the original pointer"; |
| 126 | } |
| 127 | |
| 128 | TEST_F(UnicodeTest, strstr16TargetStartOfString) { |
| 129 | const char16_t* result = strstr16(kSearchString, u"I am"); |
| 130 | EXPECT_EQ(kSearchString, result) |
| 131 | << "should return the original pointer"; |
| 132 | } |
| 133 | |
| 134 | |
| 135 | TEST_F(UnicodeTest, strstr16TargetEndOfString) { |
| 136 | const char16_t* result = strstr16(kSearchString, u"wind."); |
| 137 | EXPECT_EQ(kSearchString+19, result); |
| 138 | } |
| 139 | |
| 140 | TEST_F(UnicodeTest, strstr16TargetWithinString) { |
| 141 | const char16_t* result = strstr16(kSearchString, u"leaf"); |
| 142 | EXPECT_EQ(kSearchString+7, result); |
| 143 | } |
| 144 | |
| 145 | TEST_F(UnicodeTest, strstr16TargetNotPresent) { |
| 146 | const char16_t* result = strstr16(kSearchString, u"soar"); |
| 147 | EXPECT_EQ(nullptr, result); |
| 148 | } |
| 149 | |
Sergio Giro | 9de6776 | 2016-07-20 20:01:33 +0100 | [diff] [blame] | 150 | // http://b/29267949 |
| 151 | // Test that overreading in utf8_to_utf16_length is detected |
| 152 | TEST_F(UnicodeTest, InvalidUtf8OverreadDetected) { |
| 153 | // An utf8 char starting with \xc4 is two bytes long. |
| 154 | // Add extra zeros so no extra memory is read in case the code doesn't |
| 155 | // work as expected. |
| 156 | static char utf8[] = "\xc4\x00\x00\x00"; |
| 157 | ASSERT_DEATH(utf8_to_utf16_length((uint8_t *) utf8, strlen(utf8), |
| 158 | true /* overreadIsFatal */), "" /* regex for ASSERT_DEATH */); |
| 159 | } |
| 160 | |
Kenny Root | ba0165b | 2010-11-09 14:37:23 -0800 | [diff] [blame] | 161 | } |