| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include "gmock/gmock.h" |
| #include "gtest/gtest.h" |
| |
| #include "utils/strings/utf8.h" |
| |
| namespace libtextclassifier3 { |
| namespace { |
| |
| TEST(Utf8Test, GetNumBytesForUTF8Char) { |
| EXPECT_EQ(GetNumBytesForUTF8Char("\x00"), 0); |
| EXPECT_EQ(GetNumBytesForUTF8Char("h"), 1); |
| EXPECT_EQ(GetNumBytesForUTF8Char("๐"), 4); |
| EXPECT_EQ(GetNumBytesForUTF8Char("ใฟ"), 3); |
| } |
| |
| TEST(Utf8Test, IsValidUTF8) { |
| EXPECT_TRUE(IsValidUTF8("1234๐hello", 13)); |
| EXPECT_TRUE(IsValidUTF8("\u304A\u00B0\u106B", 8)); |
| EXPECT_TRUE(IsValidUTF8("this is a test๐๐๐", 26)); |
| EXPECT_TRUE(IsValidUTF8("\xf0\x9f\x98\x8b", 4)); |
| // Too short (string is too short). |
| EXPECT_FALSE(IsValidUTF8("\xf0\x9f", 2)); |
| // Too long (too many trailing bytes). |
| EXPECT_FALSE(IsValidUTF8("\xf0\x9f\x98\x8b\x8b", 5)); |
| // Too short (too few trailing bytes). |
| EXPECT_FALSE(IsValidUTF8("\xf0\x9f\x98\x61\x61", 5)); |
| } |
| |
| TEST(Utf8Test, ValidUTF8CharLength) { |
| EXPECT_EQ(ValidUTF8CharLength("1234๐hello", 13), 1); |
| EXPECT_EQ(ValidUTF8CharLength("\u304A\u00B0\u106B", 8), 3); |
| EXPECT_EQ(ValidUTF8CharLength("this is a test๐๐๐", 26), 1); |
| EXPECT_EQ(ValidUTF8CharLength("\xf0\x9f\x98\x8b", 4), 4); |
| // Too short (string is too short). |
| EXPECT_EQ(ValidUTF8CharLength("\xf0\x9f", 2), -1); |
| // Too long (too many trailing bytes). First character is valid. |
| EXPECT_EQ(ValidUTF8CharLength("\xf0\x9f\x98\x8b\x8b", 5), 4); |
| // Too short (too few trailing bytes). |
| EXPECT_EQ(ValidUTF8CharLength("\xf0\x9f\x98\x61\x61", 5), -1); |
| } |
| |
| } // namespace |
| } // namespace libtextclassifier3 |