1 /* 2 * Copyright (C) 2017 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 "text/Utf8Iterator.h" 18 19 #include "test/Test.h" 20 21 using ::android::StringPiece; 22 using ::testing::Eq; 23 24 namespace aapt { 25 namespace text { 26 27 TEST(Utf8IteratorTest, IteratesOverAscii) { 28 Utf8Iterator iter("hello"); 29 30 ASSERT_TRUE(iter.HasNext()); 31 EXPECT_THAT(iter.Next(), Eq(U'h')); 32 33 ASSERT_TRUE(iter.HasNext()); 34 EXPECT_THAT(iter.Next(), Eq(U'e')); 35 36 ASSERT_TRUE(iter.HasNext()); 37 EXPECT_THAT(iter.Next(), Eq(U'l')); 38 39 ASSERT_TRUE(iter.HasNext()); 40 EXPECT_THAT(iter.Next(), Eq(U'l')); 41 42 ASSERT_TRUE(iter.HasNext()); 43 EXPECT_THAT(iter.Next(), Eq(U'o')); 44 45 EXPECT_FALSE(iter.HasNext()); 46 } 47 48 TEST(Utf8IteratorTest, IteratesOverUnicode) { 49 Utf8Iterator iter("Hi there "); 50 iter.Skip(9); 51 52 ASSERT_TRUE(iter.HasNext()); 53 EXPECT_THAT(iter.Next(), Eq(U'')); 54 55 ASSERT_TRUE(iter.HasNext()); 56 EXPECT_THAT(iter.Next(), Eq(U'')); 57 58 ASSERT_TRUE(iter.HasNext()); 59 EXPECT_THAT(iter.Next(), Eq(U'')); 60 61 ASSERT_TRUE(iter.HasNext()); 62 EXPECT_THAT(iter.Next(), Eq(U'')); 63 64 EXPECT_FALSE(iter.HasNext()); 65 } 66 67 TEST(Utf8IteratorTest, PositionPointsToTheCorrectPlace) { 68 const StringPiece expected("Mm"); 69 Utf8Iterator iter(expected); 70 71 // Before any character, the position should be 0. 72 EXPECT_THAT(iter.Position(), Eq(0u)); 73 74 // The 'M' character, one byte. 75 ASSERT_TRUE(iter.HasNext()); 76 iter.Next(); 77 EXPECT_THAT(iter.Position(), Eq(1u)); 78 79 // The 'm' character, one byte. 80 ASSERT_TRUE(iter.HasNext()); 81 iter.Next(); 82 EXPECT_THAT(iter.Position(), Eq(2u)); 83 84 // The doughnut character, 4 bytes. 85 ASSERT_TRUE(iter.HasNext()); 86 iter.Next(); 87 EXPECT_THAT(iter.Position(), Eq(6u)); 88 89 // There should be nothing left. 90 EXPECT_FALSE(iter.HasNext()); 91 EXPECT_THAT(iter.Position(), Eq(expected.size())); 92 } 93 94 } // namespace text 95 } // namespace aapt 96
