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/*
* Copyright (C) 2010 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.
*/
#define LOG_TAG "String8_test"
#include <log/log.h>
#include <utils/String16.h>
#include <utils/String8.h>
#include <compare>
#include <utility>
#include <gtest/gtest.h>
using namespace android;
class String8Test : public testing::Test {
protected:
virtual void SetUp() {
}
virtual void TearDown() {
}
};
TEST_F(String8Test, Cstr) {
String8 tmp("Hello, world!");
EXPECT_STREQ(tmp.c_str(), "Hello, world!");
}
TEST_F(String8Test, OperatorPlus) {
String8 src1("Hello, ");
// Test adding String8 + const char*
const char* ccsrc2 = "world!";
String8 dst1 = src1 + ccsrc2;
EXPECT_STREQ(dst1.c_str(), "Hello, world!");
EXPECT_STREQ(src1.c_str(), "Hello, ");
EXPECT_STREQ(ccsrc2, "world!");
// Test adding String8 + String8
String8 ssrc2("world!");
String8 dst2 = src1 + ssrc2;
EXPECT_STREQ(dst2.c_str(), "Hello, world!");
EXPECT_STREQ(src1.c_str(), "Hello, ");
EXPECT_STREQ(ssrc2.c_str(), "world!");
}
TEST_F(String8Test, OperatorPlusEquals) {
String8 src1("My voice");
// Testing String8 += String8
String8 src2(" is my passport.");
src1 += src2;
EXPECT_STREQ(src1.c_str(), "My voice is my passport.");
EXPECT_STREQ(src2.c_str(), " is my passport.");
// Adding const char* to the previous string.
const char* src3 = " Verify me.";
src1 += src3;
EXPECT_STREQ(src1.c_str(), "My voice is my passport. Verify me.");
EXPECT_STREQ(src2.c_str(), " is my passport.");
EXPECT_STREQ(src3, " Verify me.");
}
TEST_F(String8Test, SetToSizeMaxReturnsNoMemory) {
const char *in = "some string";
EXPECT_EQ(NO_MEMORY, String8("").setTo(in, SIZE_MAX));
}
// http://b/29250543
TEST_F(String8Test, CorrectInvalidSurrogate) {
// d841d8 is an invalid start for a surrogate pair. Make sure this is handled by ignoring the
// first character in the pair and handling the rest correctly.
String16 string16(u"\xd841\xd841\xdc41\x0000");
String8 string8(string16);
EXPECT_EQ(4U, string8.length());
}
TEST_F(String8Test, CheckUtf32Conversion) {
// Since bound checks were added, check the conversion can be done without fatal errors.
// The utf8 lengths of these are chars are 1 + 2 + 3 + 4 = 10.
const char32_t string32[] = U"\x0000007f\x000007ff\x0000911\x0010fffe";
String8 string8(string32);
EXPECT_EQ(10U, string8.length());
}
TEST_F(String8Test, ValidUtf16Conversion) {
char16_t tmp[] = u"abcdef";
String8 valid = String8(String16(tmp));
EXPECT_STREQ(valid.c_str(), "abcdef");
}
TEST_F(String8Test, append) {
String8 s;
EXPECT_EQ(OK, s.append("foo"));
EXPECT_STREQ("foo", s.c_str());
EXPECT_EQ(OK, s.append("bar"));
EXPECT_STREQ("foobar", s.c_str());
EXPECT_EQ(OK, s.append("baz", 0));
EXPECT_STREQ("foobar", s.c_str());
EXPECT_EQ(NO_MEMORY, s.append("baz", SIZE_MAX));
EXPECT_STREQ("foobar", s.c_str());
}
TEST_F(String8Test, removeAll) {
String8 s("Hello, world!");
// NULL input should cause an assertion failure and error message in logcat
EXPECT_DEATH(s.removeAll(NULL), "");
// expect to return true and string content should remain unchanged
EXPECT_TRUE(s.removeAll(""));
EXPECT_STREQ("Hello, world!", s.c_str());
// expect to return false
EXPECT_FALSE(s.removeAll("x"));
EXPECT_STREQ("Hello, world!", s.c_str());
EXPECT_TRUE(s.removeAll("o"));
EXPECT_STREQ("Hell, wrld!", s.c_str());
}
TEST_F(String8Test, comparisons) {
const char* cstr1 = "abc";
const char* cstr2 = "def";
// str1 and str1b will point to different blocks of memory but with equal contents.
String8 str1(cstr1);
String8 str1b(cstr1);
String8 str2(cstr2);
EXPECT_TRUE((str1 <=> str1b) == 0);
EXPECT_FALSE(str1 != str1b);
EXPECT_FALSE(str1 < str1b);
EXPECT_TRUE(str1 <= str1b);
EXPECT_TRUE(str1 == str1b);
EXPECT_TRUE(str1 >= str1b);
EXPECT_FALSE(str1 > str1b);
EXPECT_TRUE((str1 <=> str2) < 0);
EXPECT_TRUE((str2 <=> str1) > 0);
EXPECT_TRUE(str1 != str2);
EXPECT_TRUE(str1 < str2);
EXPECT_TRUE(str1 <= str2);
EXPECT_FALSE(str1 == str2);
EXPECT_FALSE(str1 >= str2);
EXPECT_FALSE(str1 > str2);
// Verify that pre-C++20 comparison operators work with a std::pair of a String8, which only
// provides <=> in C++20 and up. See b/339775405.
std::pair<String8, int> pair1(str1, 13);
std::pair<String8, int> pair1b(str1b, 13);
std::pair<String8, int> pair2(str2, 13);
EXPECT_TRUE(pair1 == pair1b);
EXPECT_FALSE(pair1 < pair1b);
EXPECT_FALSE(pair1 > pair1b);
EXPECT_TRUE(pair1 != pair2);
EXPECT_TRUE(pair1 < pair2);
EXPECT_FALSE(pair1 > pair2);
}
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