Narayan Kamath | a5afcfc | 2015-01-29 20:06:46 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2015 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 | #include "utf.h" |
| 18 | |
| 19 | #include "common_runtime_test.h" |
| 20 | #include "utf-inl.h" |
| 21 | |
| 22 | namespace art { |
| 23 | |
| 24 | class UtfTest : public CommonRuntimeTest {}; |
| 25 | |
| 26 | TEST_F(UtfTest, GetLeadingUtf16Char) { |
| 27 | EXPECT_EQ(0xffff, GetLeadingUtf16Char(0xeeeeffff)); |
| 28 | } |
| 29 | |
| 30 | TEST_F(UtfTest, GetTrailingUtf16Char) { |
| 31 | EXPECT_EQ(0xffff, GetTrailingUtf16Char(0xffffeeee)); |
| 32 | EXPECT_EQ(0, GetTrailingUtf16Char(0x0000aaaa)); |
| 33 | } |
| 34 | |
| 35 | #define EXPECT_ARRAY_POSITION(expected, end, start) \ |
| 36 | EXPECT_EQ(static_cast<uintptr_t>(expected), \ |
| 37 | reinterpret_cast<uintptr_t>(end) - reinterpret_cast<uintptr_t>(start)); |
| 38 | |
| 39 | // A test string containing one, two, three and four byte UTF-8 sequences. |
| 40 | static const uint8_t kAllSequences[] = { |
| 41 | 0x24, |
| 42 | 0xc2, 0xa2, |
| 43 | 0xe2, 0x82, 0xac, |
| 44 | 0xf0, 0x9f, 0x8f, 0xa0, |
| 45 | 0x00 |
| 46 | }; |
| 47 | |
| 48 | // A test string that contains a UTF-8 encoding of a surrogate pair |
| 49 | // (code point = U+10400) |
| 50 | static const uint8_t kSurrogateEncoding[] = { |
| 51 | 0xed, 0xa0, 0x81, |
| 52 | 0xed, 0xb0, 0x80, |
| 53 | 0x00 |
| 54 | }; |
| 55 | |
| 56 | TEST_F(UtfTest, GetUtf16FromUtf8) { |
| 57 | const char* const start = reinterpret_cast<const char*>(kAllSequences); |
| 58 | const char* ptr = start; |
| 59 | uint32_t pair = 0; |
| 60 | |
| 61 | // Single byte sequence. |
| 62 | pair = GetUtf16FromUtf8(&ptr); |
| 63 | EXPECT_EQ(0x24, GetLeadingUtf16Char(pair)); |
| 64 | EXPECT_EQ(0, GetTrailingUtf16Char(pair)); |
| 65 | EXPECT_ARRAY_POSITION(1, ptr, start); |
| 66 | |
| 67 | // Two byte sequence |
| 68 | pair = GetUtf16FromUtf8(&ptr); |
| 69 | EXPECT_EQ(0xa2, GetLeadingUtf16Char(pair)); |
| 70 | EXPECT_EQ(0, GetTrailingUtf16Char(pair)); |
| 71 | EXPECT_ARRAY_POSITION(3, ptr, start); |
| 72 | |
| 73 | // Three byte sequence |
| 74 | pair = GetUtf16FromUtf8(&ptr); |
| 75 | EXPECT_EQ(0x20ac, GetLeadingUtf16Char(pair)); |
| 76 | EXPECT_EQ(0, GetTrailingUtf16Char(pair)); |
| 77 | EXPECT_ARRAY_POSITION(6, ptr, start); |
| 78 | |
| 79 | // Four byte sequence |
| 80 | pair = GetUtf16FromUtf8(&ptr); |
| 81 | EXPECT_EQ(0xd83c, GetLeadingUtf16Char(pair)); |
| 82 | EXPECT_EQ(0xdfe0, GetTrailingUtf16Char(pair)); |
| 83 | EXPECT_ARRAY_POSITION(10, ptr, start); |
| 84 | |
| 85 | // Null terminator |
| 86 | pair = GetUtf16FromUtf8(&ptr); |
| 87 | EXPECT_EQ(0, GetLeadingUtf16Char(pair)); |
| 88 | EXPECT_EQ(0, GetTrailingUtf16Char(pair)); |
| 89 | EXPECT_ARRAY_POSITION(11, ptr, start); |
| 90 | } |
| 91 | |
| 92 | TEST_F(UtfTest, GetUtf16FromUtf8_SurrogatesPassThrough) { |
| 93 | const char* const start = reinterpret_cast<const char *>(kSurrogateEncoding); |
| 94 | const char* ptr = start; |
| 95 | uint32_t pair = 0; |
| 96 | |
| 97 | pair = GetUtf16FromUtf8(&ptr); |
| 98 | EXPECT_EQ(0xd801, GetLeadingUtf16Char(pair)); |
| 99 | EXPECT_EQ(0, GetTrailingUtf16Char(pair)); |
| 100 | EXPECT_ARRAY_POSITION(3, ptr, start); |
| 101 | |
| 102 | pair = GetUtf16FromUtf8(&ptr); |
| 103 | EXPECT_EQ(0xdc00, GetLeadingUtf16Char(pair)); |
| 104 | EXPECT_EQ(0, GetTrailingUtf16Char(pair)); |
| 105 | EXPECT_ARRAY_POSITION(6, ptr, start); |
| 106 | } |
| 107 | |
| 108 | TEST_F(UtfTest, CountModifiedUtf8Chars) { |
| 109 | EXPECT_EQ(5u, CountModifiedUtf8Chars(reinterpret_cast<const char *>(kAllSequences))); |
| 110 | EXPECT_EQ(2u, CountModifiedUtf8Chars(reinterpret_cast<const char *>(kSurrogateEncoding))); |
| 111 | } |
| 112 | |
| 113 | } // namespace art |