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// Copyright 2014 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "core/fxcrt/bytestring.h"
#include <limits.h>
#include <algorithm>
#include <iterator>
#include <vector>
#include "core/fxcrt/fx_string.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/base/containers/contains.h"
#include "third_party/base/span.h"
namespace fxcrt {
TEST(ByteString, ElementAccess) {
const ByteString abc("abc");
EXPECT_EQ('a', abc[0]);
EXPECT_EQ('b', abc[1]);
EXPECT_EQ('c', abc[2]);
#ifndef NDEBUG
EXPECT_DEATH({ abc[3]; }, ".*");
#endif
pdfium::span<const char> abc_span = abc.span();
EXPECT_EQ(3u, abc_span.size());
EXPECT_EQ(0, memcmp(abc_span.data(), "abc", 3));
pdfium::span<const uint8_t> abc_raw_span = abc.raw_span();
EXPECT_EQ(3u, abc_raw_span.size());
EXPECT_EQ(0, memcmp(abc_raw_span.data(), "abc", 3));
ByteString mutable_abc = abc;
EXPECT_EQ(abc.c_str(), mutable_abc.c_str());
EXPECT_EQ('a', mutable_abc[0]);
EXPECT_EQ('b', mutable_abc[1]);
EXPECT_EQ('c', mutable_abc[2]);
EXPECT_EQ(abc.c_str(), mutable_abc.c_str());
EXPECT_EQ("abc", abc);
const char* c_str = abc.c_str();
mutable_abc.SetAt(0, 'd');
EXPECT_EQ(c_str, abc.c_str());
EXPECT_NE(c_str, mutable_abc.c_str());
EXPECT_EQ("abc", abc);
EXPECT_EQ("dbc", mutable_abc);
mutable_abc.SetAt(1, 'e');
EXPECT_EQ("abc", abc);
EXPECT_EQ("dec", mutable_abc);
mutable_abc.SetAt(2, 'f');
EXPECT_EQ("abc", abc);
EXPECT_EQ("def", mutable_abc);
#ifndef NDEBUG
EXPECT_DEATH({ mutable_abc.SetAt(3, 'g'); }, ".*");
EXPECT_EQ("abc", abc);
#endif
}
TEST(ByteString, Construct) {
{
// Copy-construct.
ByteString string1("abc");
ByteString string2(string1);
EXPECT_EQ("abc", string1);
EXPECT_EQ("abc", string2);
EXPECT_EQ(2, string1.ReferenceCountForTesting());
EXPECT_EQ(2, string2.ReferenceCountForTesting());
}
{
// Move-construct.
ByteString string1("abc");
ByteString string2(std::move(string1));
EXPECT_TRUE(string1.IsEmpty());
EXPECT_EQ("abc", string2);
EXPECT_EQ(0, string1.ReferenceCountForTesting());
EXPECT_EQ(1, string2.ReferenceCountForTesting());
}
}
TEST(ByteString, Assign) {
{
// Copy-assign.
ByteString string1;
EXPECT_EQ(0, string1.ReferenceCountForTesting());
{
ByteString string2("abc");
EXPECT_EQ(1, string2.ReferenceCountForTesting());
string1 = string2;
EXPECT_EQ(2, string1.ReferenceCountForTesting());
EXPECT_EQ(2, string2.ReferenceCountForTesting());
}
EXPECT_EQ(1, string1.ReferenceCountForTesting());
}
{
// Move-assign.
ByteString string1;
EXPECT_EQ(0, string1.ReferenceCountForTesting());
{
ByteString string2("abc");
EXPECT_EQ(1, string2.ReferenceCountForTesting());
string1 = std::move(string2);
EXPECT_EQ("abc", string1);
EXPECT_TRUE(string2.IsEmpty());
EXPECT_EQ(1, string1.ReferenceCountForTesting());
EXPECT_EQ(0, string2.ReferenceCountForTesting());
}
EXPECT_EQ(1, string1.ReferenceCountForTesting());
}
{
// From char*.
ByteString string1 = "abc";
EXPECT_EQ("abc", string1);
string1 = nullptr;
EXPECT_TRUE(string1.IsEmpty());
string1 = "def";
EXPECT_EQ("def", string1);
string1 = "";
EXPECT_TRUE(string1.IsEmpty());
}
{
// From ByteStringView.
ByteString string1(ByteStringView("abc"));
EXPECT_EQ("abc", string1);
string1 = ByteStringView("");
EXPECT_TRUE(string1.IsEmpty());
string1 = ByteStringView("def");
EXPECT_EQ("def", string1);
}
}
TEST(ByteString, OperatorLT) {
ByteString empty;
ByteString a("a");
ByteString abc("abc");
ByteString def("def");
ByteStringView v_empty;
ByteStringView v_a("a");
ByteStringView v_abc("abc");
ByteStringView v_def("def");
const char* const c_null = nullptr;
const char* const c_empty = "";
const char* const c_a = "a";
const char* const c_abc = "abc";
const char* const c_def = "def";
EXPECT_FALSE(empty < empty);
EXPECT_FALSE(a < a);
EXPECT_FALSE(abc < abc);
EXPECT_FALSE(def < def);
EXPECT_FALSE(c_null < empty);
EXPECT_FALSE(c_empty < empty);
EXPECT_FALSE(c_a < a);
EXPECT_FALSE(c_abc < abc);
EXPECT_FALSE(c_def < def);
EXPECT_FALSE(empty < c_null);
EXPECT_FALSE(empty < c_empty);
EXPECT_FALSE(a < c_a);
EXPECT_FALSE(abc < c_abc);
EXPECT_FALSE(def < c_def);
EXPECT_FALSE(empty < v_empty);
EXPECT_FALSE(a < v_a);
EXPECT_FALSE(abc < v_abc);
EXPECT_FALSE(def < v_def);
EXPECT_TRUE(empty < a);
EXPECT_FALSE(a < empty);
EXPECT_TRUE(c_null < a);
EXPECT_TRUE(c_empty < a);
EXPECT_FALSE(c_a < empty);
EXPECT_TRUE(empty < c_a);
EXPECT_FALSE(a < c_null);
EXPECT_FALSE(a < c_empty);
EXPECT_TRUE(empty < v_a);
EXPECT_FALSE(a < v_empty);
EXPECT_TRUE(empty < abc);
EXPECT_FALSE(abc < empty);
EXPECT_TRUE(c_null < abc);
EXPECT_TRUE(c_empty < abc);
EXPECT_FALSE(c_abc < empty);
EXPECT_TRUE(empty < c_abc);
EXPECT_FALSE(abc < c_null);
EXPECT_FALSE(abc < c_empty);
EXPECT_TRUE(empty < v_abc);
EXPECT_FALSE(abc < v_empty);
EXPECT_TRUE(empty < def);
EXPECT_FALSE(def < empty);
EXPECT_TRUE(c_null < def);
EXPECT_TRUE(c_empty < def);
EXPECT_FALSE(c_def < empty);
EXPECT_TRUE(empty < c_def);
EXPECT_FALSE(def < c_null);
EXPECT_FALSE(def < c_empty);
EXPECT_TRUE(empty < v_def);
EXPECT_FALSE(def < v_empty);
EXPECT_TRUE(a < abc);
EXPECT_FALSE(abc < a);
EXPECT_TRUE(c_a < abc);
EXPECT_FALSE(c_abc < a);
EXPECT_TRUE(a < c_abc);
EXPECT_FALSE(abc < c_a);
EXPECT_TRUE(a < v_abc);
EXPECT_FALSE(abc < v_a);
EXPECT_TRUE(a < def);
EXPECT_FALSE(def < a);
EXPECT_TRUE(c_a < def);
EXPECT_FALSE(c_def < a);
EXPECT_TRUE(a < c_def);
EXPECT_FALSE(def < c_a);
EXPECT_TRUE(a < v_def);
EXPECT_FALSE(def < v_a);
EXPECT_TRUE(abc < def);
EXPECT_FALSE(def < abc);
EXPECT_TRUE(c_abc < def);
EXPECT_FALSE(c_def < abc);
EXPECT_TRUE(abc < c_def);
EXPECT_FALSE(def < c_abc);
EXPECT_TRUE(abc < v_def);
EXPECT_FALSE(def < v_abc);
}
TEST(ByteString, OperatorEQ) {
ByteString null_string;
EXPECT_TRUE(null_string == null_string);
ByteString empty_string("");
EXPECT_TRUE(empty_string == empty_string);
EXPECT_TRUE(empty_string == null_string);
EXPECT_TRUE(null_string == empty_string);
ByteString deleted_string("hello");
deleted_string.Delete(0, 5);
EXPECT_TRUE(deleted_string == deleted_string);
EXPECT_TRUE(deleted_string == null_string);
EXPECT_TRUE(deleted_string == empty_string);
EXPECT_TRUE(null_string == deleted_string);
EXPECT_TRUE(empty_string == deleted_string);
ByteString byte_string("hello");
EXPECT_TRUE(byte_string == byte_string);
EXPECT_FALSE(byte_string == null_string);
EXPECT_FALSE(byte_string == empty_string);
EXPECT_FALSE(byte_string == deleted_string);
EXPECT_FALSE(null_string == byte_string);
EXPECT_FALSE(empty_string == byte_string);
EXPECT_FALSE(deleted_string == byte_string);
ByteString byte_string_same1("hello");
EXPECT_TRUE(byte_string == byte_string_same1);
EXPECT_TRUE(byte_string_same1 == byte_string);
ByteString byte_string_same2(byte_string);
EXPECT_TRUE(byte_string == byte_string_same2);
EXPECT_TRUE(byte_string_same2 == byte_string);
ByteString byte_string1("he");
ByteString byte_string2("hellp");
ByteString byte_string3("hellod");
EXPECT_FALSE(byte_string == byte_string1);
EXPECT_FALSE(byte_string == byte_string2);
EXPECT_FALSE(byte_string == byte_string3);
EXPECT_FALSE(byte_string1 == byte_string);
EXPECT_FALSE(byte_string2 == byte_string);
EXPECT_FALSE(byte_string3 == byte_string);
ByteStringView null_string_c;
ByteStringView empty_string_c("");
EXPECT_TRUE(null_string == null_string_c);
EXPECT_TRUE(null_string == empty_string_c);
EXPECT_TRUE(empty_string == null_string_c);
EXPECT_TRUE(empty_string == empty_string_c);
EXPECT_TRUE(deleted_string == null_string_c);
EXPECT_TRUE(deleted_string == empty_string_c);
EXPECT_TRUE(null_string_c == null_string);
EXPECT_TRUE(empty_string_c == null_string);
EXPECT_TRUE(null_string_c == empty_string);
EXPECT_TRUE(empty_string_c == empty_string);
EXPECT_TRUE(null_string_c == deleted_string);
EXPECT_TRUE(empty_string_c == deleted_string);
ByteStringView byte_string_c_same1("hello");
EXPECT_TRUE(byte_string == byte_string_c_same1);
EXPECT_TRUE(byte_string_c_same1 == byte_string);
ByteStringView byte_string_c1("he");
ByteStringView byte_string_c2("hellp");
ByteStringView byte_string_c3("hellod");
EXPECT_FALSE(byte_string == byte_string_c1);
EXPECT_FALSE(byte_string == byte_string_c2);
EXPECT_FALSE(byte_string == byte_string_c3);
EXPECT_FALSE(byte_string_c1 == byte_string);
EXPECT_FALSE(byte_string_c2 == byte_string);
EXPECT_FALSE(byte_string_c3 == byte_string);
const char* const c_null_string = nullptr;
const char* const c_empty_string = "";
EXPECT_TRUE(null_string == c_null_string);
EXPECT_TRUE(null_string == c_empty_string);
EXPECT_TRUE(empty_string == c_null_string);
EXPECT_TRUE(empty_string == c_empty_string);
EXPECT_TRUE(deleted_string == c_null_string);
EXPECT_TRUE(deleted_string == c_empty_string);
EXPECT_TRUE(c_null_string == null_string);
EXPECT_TRUE(c_empty_string == null_string);
EXPECT_TRUE(c_null_string == empty_string);
EXPECT_TRUE(c_empty_string == empty_string);
EXPECT_TRUE(c_null_string == deleted_string);
EXPECT_TRUE(c_empty_string == deleted_string);
const char* const c_string_same1 = "hello";
EXPECT_TRUE(byte_string == c_string_same1);
EXPECT_TRUE(c_string_same1 == byte_string);
const char* const c_string1 = "he";
const char* const c_string2 = "hellp";
const char* const c_string3 = "hellod";
EXPECT_FALSE(byte_string == c_string1);
EXPECT_FALSE(byte_string == c_string2);
EXPECT_FALSE(byte_string == c_string3);
EXPECT_FALSE(c_string1 == byte_string);
EXPECT_FALSE(c_string2 == byte_string);
EXPECT_FALSE(c_string3 == byte_string);
}
TEST(ByteString, OperatorNE) {
ByteString null_string;
EXPECT_FALSE(null_string != null_string);
ByteString empty_string("");
EXPECT_FALSE(empty_string != empty_string);
EXPECT_FALSE(empty_string != null_string);
EXPECT_FALSE(null_string != empty_string);
ByteString deleted_string("hello");
deleted_string.Delete(0, 5);
EXPECT_FALSE(deleted_string != deleted_string);
EXPECT_FALSE(deleted_string != null_string);
EXPECT_FALSE(deleted_string != empty_string);
EXPECT_FALSE(deleted_string != deleted_string);
EXPECT_FALSE(null_string != deleted_string);
EXPECT_FALSE(empty_string != deleted_string);
EXPECT_FALSE(deleted_string != deleted_string);
ByteString byte_string("hello");
EXPECT_FALSE(byte_string != byte_string);
EXPECT_TRUE(byte_string != null_string);
EXPECT_TRUE(byte_string != empty_string);
EXPECT_TRUE(byte_string != deleted_string);
EXPECT_TRUE(null_string != byte_string);
EXPECT_TRUE(empty_string != byte_string);
EXPECT_TRUE(deleted_string != byte_string);
ByteString byte_string_same1("hello");
EXPECT_FALSE(byte_string != byte_string_same1);
EXPECT_FALSE(byte_string_same1 != byte_string);
ByteString byte_string_same2(byte_string);
EXPECT_FALSE(byte_string != byte_string_same2);
EXPECT_FALSE(byte_string_same2 != byte_string);
ByteString byte_string1("he");
ByteString byte_string2("hellp");
ByteString byte_string3("hellod");
EXPECT_TRUE(byte_string != byte_string1);
EXPECT_TRUE(byte_string != byte_string2);
EXPECT_TRUE(byte_string != byte_string3);
EXPECT_TRUE(byte_string1 != byte_string);
EXPECT_TRUE(byte_string2 != byte_string);
EXPECT_TRUE(byte_string3 != byte_string);
ByteStringView null_string_c;
ByteStringView empty_string_c("");
EXPECT_FALSE(null_string != null_string_c);
EXPECT_FALSE(null_string != empty_string_c);
EXPECT_FALSE(empty_string != null_string_c);
EXPECT_FALSE(empty_string != empty_string_c);
EXPECT_FALSE(null_string_c != null_string);
EXPECT_FALSE(empty_string_c != null_string);
EXPECT_FALSE(null_string_c != empty_string);
EXPECT_FALSE(empty_string_c != empty_string);
ByteStringView byte_string_c_same1("hello");
EXPECT_FALSE(byte_string != byte_string_c_same1);
EXPECT_FALSE(byte_string_c_same1 != byte_string);
ByteStringView byte_string_c1("he");
ByteStringView byte_string_c2("hellp");
ByteStringView byte_string_c3("hellod");
EXPECT_TRUE(byte_string != byte_string_c1);
EXPECT_TRUE(byte_string != byte_string_c2);
EXPECT_TRUE(byte_string != byte_string_c3);
EXPECT_TRUE(byte_string_c1 != byte_string);
EXPECT_TRUE(byte_string_c2 != byte_string);
EXPECT_TRUE(byte_string_c3 != byte_string);
const char* const c_null_string = nullptr;
const char* const c_empty_string = "";
EXPECT_FALSE(null_string != c_null_string);
EXPECT_FALSE(null_string != c_empty_string);
EXPECT_FALSE(empty_string != c_null_string);
EXPECT_FALSE(empty_string != c_empty_string);
EXPECT_FALSE(deleted_string != c_null_string);
EXPECT_FALSE(deleted_string != c_empty_string);
EXPECT_FALSE(c_null_string != null_string);
EXPECT_FALSE(c_empty_string != null_string);
EXPECT_FALSE(c_null_string != empty_string);
EXPECT_FALSE(c_empty_string != empty_string);
EXPECT_FALSE(c_null_string != deleted_string);
EXPECT_FALSE(c_empty_string != deleted_string);
const char* const c_string_same1 = "hello";
EXPECT_FALSE(byte_string != c_string_same1);
EXPECT_FALSE(c_string_same1 != byte_string);
const char* const c_string1 = "he";
const char* const c_string2 = "hellp";
const char* const c_string3 = "hellod";
EXPECT_TRUE(byte_string != c_string1);
EXPECT_TRUE(byte_string != c_string2);
EXPECT_TRUE(byte_string != c_string3);
EXPECT_TRUE(c_string1 != byte_string);
EXPECT_TRUE(c_string2 != byte_string);
EXPECT_TRUE(c_string3 != byte_string);
}
TEST(ByteString, OperatorPlus) {
EXPECT_EQ("I like dogs", "I like " + ByteString("dogs"));
EXPECT_EQ("Dogs like me", ByteString("Dogs") + " like me");
EXPECT_EQ("Oh no, error number 42",
"Oh no, error number " + ByteString::Format("%d", 42));
{
// Make sure operator+= and Concat() increases string memory allocation
// geometrically.
int allocations = 0;
ByteString str("ABCDEFGHIJKLMN");
const char* buffer = str.c_str();
for (size_t i = 0; i < 10000; ++i) {
str += "!";
const char* new_buffer = str.c_str();
if (new_buffer != buffer) {
buffer = new_buffer;
++allocations;
}
}
EXPECT_LT(allocations, 25);
EXPECT_GT(allocations, 10);
}
}
TEST(ByteString, Concat) {
ByteString fred;
fred.Concat("FRED", 4);
EXPECT_EQ("FRED", fred);
fred.Concat("DY", 2);
EXPECT_EQ("FREDDY", fred);
fred.Delete(3, 3);
EXPECT_EQ("FRE", fred);
fred.Concat("D", 1);
EXPECT_EQ("FRED", fred);
ByteString copy = fred;
fred.Concat("DY", 2);
EXPECT_EQ("FREDDY", fred);
EXPECT_EQ("FRED", copy);
}
TEST(ByteString, Remove) {
ByteString freed("FREED");
freed.Remove('E');
EXPECT_EQ("FRD", freed);
freed.Remove('F');
EXPECT_EQ("RD", freed);
freed.Remove('D');
EXPECT_EQ("R", freed);
freed.Remove('X');
EXPECT_EQ("R", freed);
freed.Remove('R');
EXPECT_EQ("", freed);
ByteString empty;
empty.Remove('X');
EXPECT_EQ("", empty);
}
TEST(ByteString, RemoveCopies) {
ByteString freed("FREED");
const char* old_buffer = freed.c_str();
// No change with single reference - no copy.
freed.Remove('Q');
EXPECT_EQ("FREED", freed);
EXPECT_EQ(old_buffer, freed.c_str());
// Change with single reference - no copy.
freed.Remove('E');
EXPECT_EQ("FRD", freed);
EXPECT_EQ(old_buffer, freed.c_str());
// No change with multiple references - no copy.
ByteString shared(freed);
freed.Remove('Q');
EXPECT_EQ("FRD", freed);
EXPECT_EQ(old_buffer, freed.c_str());
EXPECT_EQ(old_buffer, shared.c_str());
// Change with multiple references -- must copy.
freed.Remove('D');
EXPECT_EQ("FR", freed);
EXPECT_NE(old_buffer, freed.c_str());
EXPECT_EQ("FRD", shared);
EXPECT_EQ(old_buffer, shared.c_str());
}
TEST(ByteString, Replace) {
ByteString empty;
empty.Replace("", "CLAMS");
empty.Replace("xx", "CLAMS");
EXPECT_EQ("", empty);
ByteString fred("FRED");
fred.Replace("", "");
EXPECT_EQ("FRED", fred);
fred.Replace("", "CLAMS");
EXPECT_EQ("FRED", fred);
fred.Replace("FR", "BL");
EXPECT_EQ("BLED", fred);
fred.Replace("D", "DDY");
EXPECT_EQ("BLEDDY", fred);
fred.Replace("LEDD", "");
EXPECT_EQ("BY", fred);
fred.Replace("X", "CLAMS");
EXPECT_EQ("BY", fred);
fred.Replace("BY", "HI");
EXPECT_EQ("HI", fred);
fred.Replace("I", "IHIHI");
EXPECT_EQ("HIHIHI", fred);
fred.Replace("HI", "HO");
EXPECT_EQ("HOHOHO", fred);
fred.Replace("HO", "");
EXPECT_EQ("", fred);
ByteString five_xs("xxxxx");
five_xs.Replace("xx", "xxx");
EXPECT_EQ("xxxxxxx", five_xs);
ByteString five_ys("yyyyy");
five_ys.Replace("yy", "y");
EXPECT_EQ("yyy", five_ys);
}
TEST(ByteString, Insert) {
ByteString fred("FRED");
EXPECT_EQ(5u, fred.Insert(0, 'S'));
EXPECT_EQ("SFRED", fred);
EXPECT_EQ(6u, fred.Insert(1, 'T'));
EXPECT_EQ("STFRED", fred);
EXPECT_EQ(7u, fred.Insert(4, 'U'));
EXPECT_EQ("STFRUED", fred);
EXPECT_EQ(8u, fred.Insert(7, 'V'));
EXPECT_EQ("STFRUEDV", fred);
EXPECT_EQ(8u, fred.Insert(12, 'P'));
EXPECT_EQ("STFRUEDV", fred);
{
ByteString empty;
EXPECT_EQ(1u, empty.Insert(0, 'X'));
EXPECT_EQ("X", empty);
}
{
ByteString empty;
EXPECT_EQ(0u, empty.Insert(5, 'X'));
EXPECT_NE("X", empty);
}
}
TEST(ByteString, InsertAtFrontAndInsertAtBack) {
{
ByteString empty;
EXPECT_EQ(1u, empty.InsertAtFront('D'));
EXPECT_EQ("D", empty);
EXPECT_EQ(2u, empty.InsertAtFront('E'));
EXPECT_EQ("ED", empty);
EXPECT_EQ(3u, empty.InsertAtFront('R'));
EXPECT_EQ("RED", empty);
EXPECT_EQ(4u, empty.InsertAtFront('F'));
EXPECT_EQ("FRED", empty);
}
{
ByteString empty;
EXPECT_EQ(1u, empty.InsertAtBack('F'));
EXPECT_EQ("F", empty);
EXPECT_EQ(2u, empty.InsertAtBack('R'));
EXPECT_EQ("FR", empty);
EXPECT_EQ(3u, empty.InsertAtBack('E'));
EXPECT_EQ("FRE", empty);
EXPECT_EQ(4u, empty.InsertAtBack('D'));
EXPECT_EQ("FRED", empty);
}
{
ByteString empty;
EXPECT_EQ(1u, empty.InsertAtBack('E'));
EXPECT_EQ("E", empty);
EXPECT_EQ(2u, empty.InsertAtFront('R'));
EXPECT_EQ("RE", empty);
EXPECT_EQ(3u, empty.InsertAtBack('D'));
EXPECT_EQ("RED", empty);
EXPECT_EQ(4u, empty.InsertAtFront('F'));
EXPECT_EQ("FRED", empty);
}
}
TEST(ByteString, Delete) {
ByteString fred("FRED");
EXPECT_EQ(4u, fred.Delete(0, 0));
EXPECT_EQ("FRED", fred);
EXPECT_EQ(2u, fred.Delete(0, 2));
EXPECT_EQ("ED", fred);
EXPECT_EQ(1u, fred.Delete(1));
EXPECT_EQ("E", fred);
EXPECT_EQ(0u, fred.Delete(0));
EXPECT_EQ("", fred);
EXPECT_EQ(0u, fred.Delete(0));
EXPECT_EQ("", fred);
ByteString empty;
EXPECT_EQ(0u, empty.Delete(0));
EXPECT_EQ("", empty);
EXPECT_EQ(0u, empty.Delete(1));
EXPECT_EQ("", empty);
}
TEST(ByteString, OneArgSubstr) {
ByteString fred("FRED");
EXPECT_EQ("FRED", fred.Substr(0));
EXPECT_EQ("RED", fred.Substr(1));
EXPECT_EQ("ED", fred.Substr(2));
EXPECT_EQ("D", fred.Substr(3));
EXPECT_EQ("", fred.Substr(4));
ByteString empty;
EXPECT_EQ("", empty.Substr(0));
EXPECT_EQ("", empty.Substr(1));
}
TEST(ByteString, TwoArgSubstr) {
ByteString fred("FRED");
EXPECT_EQ("", fred.Substr(0, 0));
EXPECT_EQ("", fred.Substr(3, 0));
EXPECT_EQ("FRED", fred.Substr(0, 4));
EXPECT_EQ("RED", fred.Substr(1, 3));
EXPECT_EQ("ED", fred.Substr(2, 2));
EXPECT_EQ("D", fred.Substr(3, 1));
EXPECT_EQ("F", fred.Substr(0, 1));
EXPECT_EQ("R", fred.Substr(1, 1));
EXPECT_EQ("E", fred.Substr(2, 1));
EXPECT_EQ("D", fred.Substr(3, 1));
EXPECT_EQ("FR", fred.Substr(0, 2));
EXPECT_EQ("FRED", fred.Substr(0, 4));
EXPECT_EQ("", fred.Substr(0, 10));
EXPECT_EQ("RED", fred.Substr(1, 3));
EXPECT_EQ("", fred.Substr(4, 1));
ByteString empty;
EXPECT_EQ("", empty.Substr(0, 0));
}
TEST(ByteString, First) {
ByteString fred("FRED");
EXPECT_EQ("", fred.First(0));
EXPECT_EQ("F", fred.First(1));
EXPECT_EQ("FR", fred.First(2));
EXPECT_EQ("FRE", fred.First(3));
EXPECT_EQ("FRED", fred.First(4));
EXPECT_EQ("", fred.First(5));
ByteString empty;
EXPECT_EQ("", empty.First(0));
EXPECT_EQ("", empty.First(1));
}
TEST(ByteString, Last) {
ByteString fred("FRED");
EXPECT_EQ("", fred.Last(0));
EXPECT_EQ("D", fred.Last(1));
EXPECT_EQ("ED", fred.Last(2));
EXPECT_EQ("RED", fred.Last(3));
EXPECT_EQ("FRED", fred.Last(4));
EXPECT_EQ("", fred.Last(5));
ByteString empty;
EXPECT_EQ("", empty.Last(0));
EXPECT_EQ("", empty.Last(1));
}
TEST(ByteString, Find) {
ByteString null_string;
EXPECT_FALSE(null_string.Find('a').has_value());
EXPECT_FALSE(null_string.Find('\0').has_value());
ByteString empty_string("");
EXPECT_FALSE(empty_string.Find('a').has_value());
EXPECT_FALSE(empty_string.Find('\0').has_value());
ByteString single_string("a");
absl::optional<size_t> result = single_string.Find('a');
ASSERT_TRUE(result.has_value());
EXPECT_EQ(0u, result.value());
EXPECT_FALSE(single_string.Find('b').has_value());
EXPECT_FALSE(single_string.Find('\0').has_value());
ByteString longer_string("abccc");
result = longer_string.Find('a');
ASSERT_TRUE(result.has_value());
EXPECT_EQ(0u, result.value());
result = longer_string.Find('c');
ASSERT_TRUE(result.has_value());
EXPECT_EQ(2u, result.value());
result = longer_string.Find('c', 3);
ASSERT_TRUE(result.has_value());
EXPECT_EQ(3u, result.value());
EXPECT_FALSE(longer_string.Find('d').has_value());
EXPECT_FALSE(longer_string.Find('\0').has_value());
result = longer_string.Find("ab");
ASSERT_TRUE(result.has_value());
EXPECT_EQ(0u, result.value());
result = longer_string.Find("ccc");
ASSERT_TRUE(result.has_value());
EXPECT_EQ(2u, result.value());
result = longer_string.Find("cc", 3);
ASSERT_TRUE(result.has_value());
EXPECT_EQ(3u, result.value());
EXPECT_FALSE(longer_string.Find("d").has_value());
ByteString hibyte_string(
"ab\x8c"
"def");
result = hibyte_string.Find('\x8c');
ASSERT_TRUE(result.has_value());
EXPECT_EQ(2u, result.value());
}
TEST(ByteString, ReverseFind) {
ByteString null_string;
EXPECT_FALSE(null_string.ReverseFind('a').has_value());
EXPECT_FALSE(null_string.ReverseFind('\0').has_value());
ByteString empty_string("");
EXPECT_FALSE(empty_string.ReverseFind('a').has_value());
EXPECT_FALSE(empty_string.ReverseFind('\0').has_value());
ByteString single_string("a");
absl::optional<size_t> result = single_string.ReverseFind('a');
ASSERT_TRUE(result.has_value());
EXPECT_EQ(0u, result.value());
EXPECT_FALSE(single_string.ReverseFind('b').has_value());
EXPECT_FALSE(single_string.ReverseFind('\0').has_value());
ByteString longer_string("abccc");
result = longer_string.ReverseFind('a');
ASSERT_TRUE(result.has_value());
EXPECT_EQ(0u, result.value());
result = longer_string.ReverseFind('c');
ASSERT_TRUE(result.has_value());
EXPECT_EQ(4u, result.value());
EXPECT_FALSE(longer_string.ReverseFind('\0').has_value());
ByteString hibyte_string(
"ab\x8c"
"def");
result = hibyte_string.ReverseFind('\x8c');
ASSERT_TRUE(result.has_value());
EXPECT_EQ(2u, result.value());
}
TEST(ByteString, UpperLower) {
ByteString fred("F-Re.42D");
fred.MakeLower();
EXPECT_EQ("f-re.42d", fred);
fred.MakeUpper();
EXPECT_EQ("F-RE.42D", fred);
ByteString empty;
empty.MakeLower();
EXPECT_EQ("", empty);
empty.MakeUpper();
EXPECT_EQ("", empty);
}
TEST(ByteString, Trim) {
ByteString fred(" FRED ");
fred.Trim();
EXPECT_EQ("FRED", fred);
fred.Trim('E');
EXPECT_EQ("FRED", fred);
fred.Trim('F');
EXPECT_EQ("RED", fred);
fred.Trim("ERP");
EXPECT_EQ("D", fred);
ByteString blank(" ");
blank.Trim("ERP");
EXPECT_EQ(" ", blank);
blank.Trim('E');
EXPECT_EQ(" ", blank);
blank.Trim();
EXPECT_EQ("", blank);
ByteString empty;
empty.Trim("ERP");
EXPECT_EQ("", empty);
empty.Trim('E');
EXPECT_EQ("", empty);
empty.Trim();
EXPECT_EQ("", empty);
ByteString abc(" ABCCBA ");
abc.Trim("A");
EXPECT_EQ(" ABCCBA ", abc);
abc.Trim(" A");
EXPECT_EQ("BCCB", abc);
}
TEST(ByteString, TrimLeft) {
ByteString fred(" FRED ");
fred.TrimLeft();
EXPECT_EQ("FRED ", fred);
fred.TrimLeft('E');
EXPECT_EQ("FRED ", fred);
fred.TrimLeft('F');
EXPECT_EQ("RED ", fred);
fred.TrimLeft("ERP");
EXPECT_EQ("D ", fred);
ByteString blank(" ");
blank.TrimLeft("ERP");
EXPECT_EQ(" ", blank);
blank.TrimLeft('E');
EXPECT_EQ(" ", blank);
blank.TrimLeft();
EXPECT_EQ("", blank);
ByteString empty;
empty.TrimLeft("ERP");
EXPECT_EQ("", empty);
empty.TrimLeft('E');
EXPECT_EQ("", empty);
empty.TrimLeft();
EXPECT_EQ("", empty);
}
TEST(ByteString, TrimLeftCopies) {
{
// With a single reference, no copy takes place.
ByteString fred(" FRED ");
const char* old_buffer = fred.c_str();
fred.TrimLeft();
EXPECT_EQ("FRED ", fred);
EXPECT_EQ(old_buffer, fred.c_str());
}
{
// With multiple references, we must copy.
ByteString fred(" FRED ");
ByteString other_fred = fred;
const char* old_buffer = fred.c_str();
fred.TrimLeft();
EXPECT_EQ("FRED ", fred);
EXPECT_EQ(" FRED ", other_fred);
EXPECT_NE(old_buffer, fred.c_str());
}
{
// With multiple references, but no modifications, no copy.
ByteString fred("FRED");
ByteString other_fred = fred;
const char* old_buffer = fred.c_str();
fred.TrimLeft();
EXPECT_EQ("FRED", fred);
EXPECT_EQ("FRED", other_fred);
EXPECT_EQ(old_buffer, fred.c_str());
}
}
TEST(ByteString, TrimRight) {
ByteString fred(" FRED ");
fred.TrimRight();
EXPECT_EQ(" FRED", fred);
fred.TrimRight('E');
EXPECT_EQ(" FRED", fred);
fred.TrimRight('D');
EXPECT_EQ(" FRE", fred);
fred.TrimRight("ERP");
EXPECT_EQ(" F", fred);
ByteString blank(" ");
blank.TrimRight("ERP");
EXPECT_EQ(" ", blank);
blank.TrimRight('E');
EXPECT_EQ(" ", blank);
blank.TrimRight();
EXPECT_EQ("", blank);
ByteString empty;
empty.TrimRight("ERP");
EXPECT_EQ("", empty);
empty.TrimRight('E');
EXPECT_EQ("", empty);
empty.TrimRight();
EXPECT_EQ("", empty);
}
TEST(ByteString, TrimRightCopies) {
{
// With a single reference, no copy takes place.
ByteString fred(" FRED ");
const char* old_buffer = fred.c_str();
fred.TrimRight();
EXPECT_EQ(" FRED", fred);
EXPECT_EQ(old_buffer, fred.c_str());
}
{
// With multiple references, we must copy.
ByteString fred(" FRED ");
ByteString other_fred = fred;
const char* old_buffer = fred.c_str();
fred.TrimRight();
EXPECT_EQ(" FRED", fred);
EXPECT_EQ(" FRED ", other_fred);
EXPECT_NE(old_buffer, fred.c_str());
}
{
// With multiple references, but no modifications, no copy.
ByteString fred("FRED");
ByteString other_fred = fred;
const char* old_buffer = fred.c_str();
fred.TrimRight();
EXPECT_EQ("FRED", fred);
EXPECT_EQ("FRED", other_fred);
EXPECT_EQ(old_buffer, fred.c_str());
}
}
TEST(ByteString, Reserve) {
{
ByteString str;
str.Reserve(6);
const char* old_buffer = str.c_str();
str += "ABCDEF";
EXPECT_EQ(old_buffer, str.c_str());
str += "Blah Blah Blah Blah Blah Blah";
EXPECT_NE(old_buffer, str.c_str());
}
{
ByteString str("A");
str.Reserve(6);
const char* old_buffer = str.c_str();
str += "BCDEF";
EXPECT_EQ(old_buffer, str.c_str());
str += "Blah Blah Blah Blah Blah Blah";
EXPECT_NE(old_buffer, str.c_str());
}
}
TEST(ByteString, GetBuffer) {
ByteString str1;
{
pdfium::span<char> buffer = str1.GetBuffer(12);
// NOLINTNEXTLINE(runtime/printf)
strcpy(buffer.data(), "clams");
}
str1.ReleaseBuffer(str1.GetStringLength());
EXPECT_EQ("clams", str1);
ByteString str2("cl");
{
pdfium::span<char> buffer = str2.GetBuffer(12);
// NOLINTNEXTLINE(runtime/printf)
strcpy(&buffer[2], "ams");
}
str2.ReleaseBuffer(str2.GetStringLength());
EXPECT_EQ("clams", str2);
}
TEST(ByteString, ReleaseBuffer) {
{
ByteString str;
str.Reserve(12);
str += "clams";
const char* old_buffer = str.c_str();
str.ReleaseBuffer(4);
EXPECT_EQ(old_buffer, str.c_str());
EXPECT_EQ("clam", str);
}
{
ByteString str("c");
str.Reserve(12);
str += "lams";
const char* old_buffer = str.c_str();
str.ReleaseBuffer(4);
EXPECT_EQ(old_buffer, str.c_str());
EXPECT_EQ("clam", str);
}
{
ByteString str;
str.Reserve(200);
str += "clams";
const char* old_buffer = str.c_str();
str.ReleaseBuffer(4);
EXPECT_NE(old_buffer, str.c_str());
EXPECT_EQ("clam", str);
}
{
ByteString str("c");
str.Reserve(200);
str += "lams";
const char* old_buffer = str.c_str();
str.ReleaseBuffer(4);
EXPECT_NE(old_buffer, str.c_str());
EXPECT_EQ("clam", str);
}
}
TEST(ByteString, EmptyReverseIterator) {
ByteString empty;
auto iter = empty.rbegin();
EXPECT_TRUE(iter == empty.rend());
EXPECT_FALSE(iter != empty.rend());
EXPECT_FALSE(iter < empty.rend());
}
TEST(ByteString, OneCharReverseIterator) {
ByteString one_str("a");
auto iter = one_str.rbegin();
EXPECT_FALSE(iter == one_str.rend());
EXPECT_TRUE(iter != one_str.rend());
EXPECT_TRUE(iter < one_str.rend());
char ch = *iter++;
EXPECT_EQ('a', ch);
EXPECT_TRUE(iter == one_str.rend());
EXPECT_FALSE(iter != one_str.rend());
EXPECT_FALSE(iter < one_str.rend());
}
TEST(ByteString, MultiCharReverseIterator) {
ByteString multi_str("abcd");
auto iter = multi_str.rbegin();
EXPECT_NE(iter, multi_str.rend());
EXPECT_EQ(4, multi_str.rend() - iter);
EXPECT_EQ(0, iter - multi_str.rbegin());
char ch = *iter++;
EXPECT_EQ('d', ch);
EXPECT_EQ('c', *iter);
EXPECT_NE(iter, multi_str.rend());
EXPECT_EQ(3, multi_str.rend() - iter);
EXPECT_EQ(1, iter - multi_str.rbegin());
ch = *(++iter);
EXPECT_EQ('b', ch);
EXPECT_EQ('b', *iter);
EXPECT_NE(iter, multi_str.rend());
EXPECT_EQ(2, multi_str.rend() - iter);
EXPECT_EQ(2, iter - multi_str.rbegin());
ch = *iter++;
EXPECT_EQ('b', ch);
EXPECT_EQ('a', *iter);
EXPECT_NE(iter, multi_str.rend());
EXPECT_EQ(1, multi_str.rend() - iter);
EXPECT_EQ(3, iter - multi_str.rbegin());
ch = *iter++;
EXPECT_EQ('a', ch);
EXPECT_EQ(iter, multi_str.rend());
EXPECT_EQ(0, multi_str.rend() - iter);
EXPECT_EQ(4, iter - multi_str.rbegin());
ch = *(--iter);
EXPECT_EQ('a', ch);
EXPECT_EQ('a', *iter);
EXPECT_NE(iter, multi_str.rend());
EXPECT_EQ(1, multi_str.rend() - iter);
EXPECT_EQ(3, iter - multi_str.rbegin());
ch = *iter--;
EXPECT_EQ('a', ch);
EXPECT_EQ('b', *iter);
EXPECT_NE(iter, multi_str.rend());
EXPECT_EQ(2, multi_str.rend() - iter);
EXPECT_EQ(2, iter - multi_str.rbegin());
ch = *iter--;
EXPECT_EQ('b', ch);
EXPECT_EQ('c', *iter);
EXPECT_NE(iter, multi_str.rend());
EXPECT_EQ(3, multi_str.rend() - iter);
EXPECT_EQ(1, iter - multi_str.rbegin());
ch = *(--iter);
EXPECT_EQ('d', ch);
EXPECT_EQ('d', *iter);
EXPECT_EQ(iter, multi_str.rbegin());
EXPECT_EQ(4, multi_str.rend() - iter);
EXPECT_EQ(0, iter - multi_str.rbegin());
}
TEST(ByteStringView, Null) {
ByteStringView null_string;
EXPECT_FALSE(null_string.raw_str());
EXPECT_EQ(0u, null_string.GetLength());
EXPECT_TRUE(null_string.IsEmpty());
ByteStringView another_null_string;
EXPECT_EQ(null_string, another_null_string);
ByteStringView copied_null_string(null_string);
EXPECT_FALSE(copied_null_string.raw_str());
EXPECT_EQ(0u, copied_null_string.GetLength());
EXPECT_TRUE(copied_null_string.IsEmpty());
EXPECT_EQ(null_string, copied_null_string);
ByteStringView span_null_string = pdfium::span<const uint8_t>();
EXPECT_FALSE(span_null_string.raw_str());
EXPECT_EQ(0u, span_null_string.GetLength());
EXPECT_TRUE(span_null_string.IsEmpty());
EXPECT_EQ(null_string, span_null_string);
ByteStringView empty_string(""); // Pointer to NUL, not NULL pointer.
EXPECT_TRUE(empty_string.raw_str());
EXPECT_EQ(0u, empty_string.GetLength());
EXPECT_TRUE(empty_string.IsEmpty());
EXPECT_EQ(null_string, empty_string);
ByteStringView assigned_null_string("initially not nullptr");
assigned_null_string = null_string;
EXPECT_FALSE(assigned_null_string.raw_str());
EXPECT_EQ(0u, assigned_null_string.GetLength());
EXPECT_TRUE(assigned_null_string.IsEmpty());
EXPECT_EQ(null_string, assigned_null_string);
ByteStringView assigned_nullptr_string("initially not nullptr");
assigned_nullptr_string = nullptr;
EXPECT_FALSE(assigned_nullptr_string.raw_str());
EXPECT_EQ(0u, assigned_nullptr_string.GetLength());
EXPECT_TRUE(assigned_nullptr_string.IsEmpty());
EXPECT_EQ(null_string, assigned_nullptr_string);
ByteStringView assigned_span_null_string("initially not null span");
assigned_span_null_string = pdfium::span<const uint8_t>();
EXPECT_FALSE(assigned_span_null_string.raw_str());
EXPECT_EQ(0u, assigned_span_null_string.GetLength());
EXPECT_TRUE(assigned_span_null_string.IsEmpty());
EXPECT_EQ(null_string, assigned_span_null_string);
ByteStringView non_null_string("a");
EXPECT_NE(null_string, non_null_string);
}
TEST(ByteStringView, NotNull) {
ByteStringView string3("abc");
ByteStringView string6("abcdef");
ByteStringView alternate_string3("abcdef", 3);
ByteStringView span_string4(pdfium::as_bytes(pdfium::make_span("abcd", 4)));
ByteStringView embedded_nul_string7("abc\0def", 7);
ByteStringView illegal_string7("abcdef", 7);
EXPECT_EQ(3u, string3.GetLength());
EXPECT_EQ(6u, string6.GetLength());
EXPECT_EQ(3u, alternate_string3.GetLength());
EXPECT_EQ(4u, span_string4.GetLength());
EXPECT_EQ(7u, embedded_nul_string7.GetLength());
EXPECT_EQ(7u, illegal_string7.GetLength());
EXPECT_NE(string3, string6);
EXPECT_EQ(string3, alternate_string3);
EXPECT_NE(string3, embedded_nul_string7);
EXPECT_NE(string3, illegal_string7);
EXPECT_NE(string6, alternate_string3);
EXPECT_NE(string6, embedded_nul_string7);
EXPECT_NE(string6, illegal_string7);
EXPECT_NE(alternate_string3, embedded_nul_string7);
EXPECT_NE(alternate_string3, illegal_string7);
EXPECT_NE(embedded_nul_string7, illegal_string7);
ByteStringView copied_string3(string3);
ByteStringView copied_alternate_string3(alternate_string3);
ByteStringView copied_embedded_nul_string7(embedded_nul_string7);
EXPECT_EQ(string3, copied_string3);
EXPECT_EQ(alternate_string3, copied_alternate_string3);
EXPECT_EQ(embedded_nul_string7, copied_embedded_nul_string7);
ByteStringView assigned_string3("intially something else");
ByteStringView assigned_alternate_string3("initally something else");
ByteStringView assigned_ptr_string3("initially something else");
ByteStringView assigned_embedded_nul_string7("initially something else");
assigned_string3 = string3;
assigned_alternate_string3 = alternate_string3;
assigned_ptr_string3 = "abc";
assigned_embedded_nul_string7 = embedded_nul_string7;
EXPECT_EQ(string3, assigned_string3);
EXPECT_EQ(alternate_string3, assigned_alternate_string3);
EXPECT_EQ(alternate_string3, assigned_ptr_string3);
EXPECT_EQ(embedded_nul_string7, assigned_embedded_nul_string7);
}
TEST(ByteStringView, FromChar) {
ByteStringView null_string;
ByteStringView lower_a_string("a");
// Must have lvalues that outlive the corresponding ByteStringC.
char nul = '\0';
char lower_a = 'a';
ByteStringView nul_string_from_char(nul);
ByteStringView lower_a_string_from_char(lower_a);
// Pointer to nul, not nullptr ptr, hence length 1 ...
EXPECT_EQ(1u, nul_string_from_char.GetLength());
EXPECT_NE(null_string, nul_string_from_char);
EXPECT_EQ(1u, lower_a_string_from_char.GetLength());
EXPECT_EQ(lower_a_string, lower_a_string_from_char);
EXPECT_NE(nul_string_from_char, lower_a_string_from_char);
ByteStringView longer_string("ab");
EXPECT_NE(longer_string, lower_a_string_from_char);
}
TEST(ByteStringView, FromVector) {
std::vector<uint8_t> null_vec;
ByteStringView null_string(null_vec);
EXPECT_EQ(0u, null_string.GetLength());
std::vector<uint8_t> lower_a_vec(10, static_cast<uint8_t>('a'));
ByteStringView lower_a_string(lower_a_vec);
EXPECT_EQ(static_cast<size_t>(10), lower_a_string.GetLength());
EXPECT_EQ("aaaaaaaaaa", lower_a_string);
std::vector<uint8_t> cleared_vec;
cleared_vec.push_back(42);
cleared_vec.pop_back();
ByteStringView cleared_string(cleared_vec);
EXPECT_EQ(0u, cleared_string.GetLength());
EXPECT_EQ(nullptr, cleared_string.raw_str());
}
TEST(ByteStringView, GetID) {
ByteStringView null_string;
EXPECT_EQ(0u, null_string.GetID());
ByteStringView empty_string("");
EXPECT_EQ(0u, empty_string.GetID());
ByteStringView short_string("ab");
EXPECT_EQ(FXBSTR_ID('a', 'b', 0, 0), short_string.GetID());
ByteStringView longer_string("abcdef");
EXPECT_EQ(FXBSTR_ID('a', 'b', 'c', 'd'), longer_string.GetID());
}
TEST(ByteStringView, Find) {
ByteStringView null_string;
EXPECT_FALSE(null_string.Find('a').has_value());
EXPECT_FALSE(null_string.Find('\0').has_value());
ByteStringView empty_string("");
EXPECT_FALSE(empty_string.Find('a').has_value());
EXPECT_FALSE(empty_string.Find('\0').has_value());
ByteStringView single_string("a");
absl::optional<size_t> result = single_string.Find('a');
ASSERT_TRUE(result.has_value());
EXPECT_EQ(0u, result.value());
EXPECT_FALSE(single_string.Find('b').has_value());
EXPECT_FALSE(single_string.Find('\0').has_value());
ByteStringView longer_string("abccc");
result = longer_string.Find('a');
ASSERT_TRUE(result.has_value());
EXPECT_EQ(0u, result.value());
result = longer_string.Find('c');
ASSERT_TRUE(result.has_value());
EXPECT_EQ(2u, result.value());
EXPECT_FALSE(longer_string.Find('d').has_value());
EXPECT_FALSE(longer_string.Find('\0').has_value());
ByteStringView hibyte_string(
"ab\x8c"
"def");
result = hibyte_string.Find('\x8c');
ASSERT_TRUE(result.has_value());
EXPECT_EQ(2u, result.value());
}
TEST(ByteStringView, OneArgSubstr) {
ByteStringView null_string;
EXPECT_EQ(null_string, null_string.Substr(0));
EXPECT_EQ(null_string, null_string.Substr(1));
ByteStringView empty_string("");
EXPECT_EQ("", empty_string.Substr(0));
EXPECT_EQ("", empty_string.Substr(1));
ByteStringView single_character("a");
EXPECT_EQ(single_character, single_character.Substr(0));
EXPECT_EQ("", single_character.Substr(1));
ByteStringView longer_string("abcdef");
EXPECT_EQ(longer_string, longer_string.Substr(0));
EXPECT_EQ("", longer_string.Substr(187));
ByteStringView trailing_substring("ef");
EXPECT_EQ(trailing_substring, longer_string.Substr(4));
}
TEST(ByteStringView, TwoArgSubstr) {
ByteStringView null_string;
EXPECT_EQ(null_string, null_string.Substr(0, 1));
EXPECT_EQ(null_string, null_string.Substr(1, 1));
ByteStringView empty_string("");
EXPECT_EQ("", empty_string.Substr(0, 1));
EXPECT_EQ("", empty_string.Substr(1, 1));
ByteStringView single_character("a");
EXPECT_EQ("", single_character.Substr(0, 0));
EXPECT_EQ(single_character, single_character.Substr(0, 1));
EXPECT_EQ("", single_character.Substr(1, 0));
EXPECT_EQ("", single_character.Substr(1, 1));
ByteStringView longer_string("abcdef");
EXPECT_EQ(longer_string, longer_string.Substr(0, 6));
EXPECT_EQ("", longer_string.Substr(0, 187));
ByteStringView leading_substring("ab");
EXPECT_EQ(leading_substring, longer_string.Substr(0, 2));
ByteStringView middle_substring("bcde");
EXPECT_EQ(middle_substring, longer_string.Substr(1, 4));
ByteStringView trailing_substring("ef");
EXPECT_EQ(trailing_substring, longer_string.Substr(4, 2));
EXPECT_EQ("", longer_string.Substr(4, 3));
}
TEST(ByteStringView, TrimmedRight) {
ByteStringView fred("FRED");
EXPECT_EQ("FRED", fred.TrimmedRight('E'));
EXPECT_EQ("FRE", fred.TrimmedRight('D'));
ByteStringView fredd("FREDD");
EXPECT_EQ("FRE", fred.TrimmedRight('D'));
}
TEST(ByteStringView, ElementAccess) {
// ByteStringView includes the NUL terminator for non-empty strings.
ByteStringView abc("abc");
EXPECT_EQ('a', static_cast<char>(abc[0]));
EXPECT_EQ('b', static_cast<char>(abc[1]));
EXPECT_EQ('c', static_cast<char>(abc[2]));
#ifndef NDEBUG
EXPECT_DEATH({ abc[3]; }, ".*");
#endif
}
TEST(ByteStringView, OperatorLT) {
ByteStringView empty;
ByteStringView a("a");
ByteStringView abc("abc");
ByteStringView def("def");
const char* const c_null = nullptr;
const char* const c_empty = "";
const char* const c_a = "a";
const char* const c_abc = "abc";
const char* const c_def = "def";
EXPECT_FALSE(empty < empty);
EXPECT_FALSE(a < a);
EXPECT_FALSE(abc < abc);
EXPECT_FALSE(def < def);
EXPECT_FALSE(c_null < empty);
EXPECT_FALSE(c_empty < empty);
EXPECT_FALSE(c_a < a);
EXPECT_FALSE(c_abc < abc);
EXPECT_FALSE(c_def < def);
EXPECT_FALSE(empty < c_null);
EXPECT_FALSE(empty < c_empty);
EXPECT_FALSE(a < c_a);
EXPECT_FALSE(abc < c_abc);
EXPECT_FALSE(def < c_def);
EXPECT_TRUE(empty < a);
EXPECT_FALSE(a < empty);
EXPECT_TRUE(empty < c_a);
EXPECT_FALSE(a < c_null);
EXPECT_FALSE(a < c_empty);
EXPECT_TRUE(empty < abc);
EXPECT_FALSE(abc < empty);
EXPECT_TRUE(empty < c_abc);
EXPECT_FALSE(abc < c_null);
EXPECT_FALSE(abc < c_empty);
EXPECT_TRUE(empty < def);
EXPECT_FALSE(def < empty);
EXPECT_TRUE(empty < c_def);
EXPECT_FALSE(def < c_null);
EXPECT_FALSE(def < c_empty);
EXPECT_TRUE(a < abc);
EXPECT_FALSE(abc < a);
EXPECT_TRUE(a < c_abc);
EXPECT_FALSE(abc < c_a);
EXPECT_TRUE(a < def);
EXPECT_FALSE(def < a);
EXPECT_TRUE(a < c_def);
EXPECT_FALSE(def < c_a);
EXPECT_TRUE(abc < def);
EXPECT_FALSE(def < abc);
EXPECT_TRUE(abc < c_def);
EXPECT_FALSE(def < c_abc);
}
TEST(ByteStringView, OperatorEQ) {
ByteStringView byte_string_c("hello");
EXPECT_TRUE(byte_string_c == byte_string_c);
ByteStringView byte_string_c_same1("hello");
EXPECT_TRUE(byte_string_c == byte_string_c_same1);
EXPECT_TRUE(byte_string_c_same1 == byte_string_c);
ByteStringView byte_string_c_same2(byte_string_c);
EXPECT_TRUE(byte_string_c == byte_string_c_same2);
EXPECT_TRUE(byte_string_c_same2 == byte_string_c);
ByteStringView byte_string_c1("he");
ByteStringView byte_string_c2("hellp");
ByteStringView byte_string_c3("hellod");
EXPECT_FALSE(byte_string_c == byte_string_c1);
EXPECT_FALSE(byte_string_c == byte_string_c2);
EXPECT_FALSE(byte_string_c == byte_string_c3);
EXPECT_FALSE(byte_string_c1 == byte_string_c);
EXPECT_FALSE(byte_string_c2 == byte_string_c);
EXPECT_FALSE(byte_string_c3 == byte_string_c);
ByteString byte_string_same1("hello");
EXPECT_TRUE(byte_string_c == byte_string_same1);
EXPECT_TRUE(byte_string_same1 == byte_string_c);
ByteString byte_string1("he");
ByteString byte_string2("hellp");
ByteString byte_string3("hellod");
EXPECT_FALSE(byte_string_c == byte_string1);
EXPECT_FALSE(byte_string_c == byte_string2);
EXPECT_FALSE(byte_string_c == byte_string3);
EXPECT_FALSE(byte_string1 == byte_string_c);
EXPECT_FALSE(byte_string2 == byte_string_c);
EXPECT_FALSE(byte_string3 == byte_string_c);
const char* const c_string_same1 = "hello";
EXPECT_TRUE(byte_string_c == c_string_same1);
EXPECT_TRUE(c_string_same1 == byte_string_c);
const char* const c_string1 = "he";
const char* const c_string2 = "hellp";
const char* const c_string3 = "hellod";
EXPECT_FALSE(byte_string_c == c_string1);
EXPECT_FALSE(byte_string_c == c_string2);
EXPECT_FALSE(byte_string_c == c_string3);
EXPECT_FALSE(c_string1 == byte_string_c);
EXPECT_FALSE(c_string2 == byte_string_c);
EXPECT_FALSE(c_string3 == byte_string_c);
pdfium::span<const uint8_t> span5(
pdfium::as_bytes(pdfium::make_span("hello", 5)));
EXPECT_EQ(byte_string_c.raw_span(), span5);
}
TEST(ByteStringView, OperatorNE) {
ByteStringView byte_string_c("hello");
EXPECT_FALSE(byte_string_c != byte_string_c);
ByteStringView byte_string_c_same1("hello");
EXPECT_FALSE(byte_string_c != byte_string_c_same1);
EXPECT_FALSE(byte_string_c_same1 != byte_string_c);
ByteStringView byte_string_c_same2(byte_string_c);
EXPECT_FALSE(byte_string_c != byte_string_c_same2);
EXPECT_FALSE(byte_string_c_same2 != byte_string_c);
ByteStringView byte_string_c1("he");
ByteStringView byte_string_c2("hellp");
ByteStringView byte_string_c3("hellod");
EXPECT_TRUE(byte_string_c != byte_string_c1);
EXPECT_TRUE(byte_string_c != byte_string_c2);
EXPECT_TRUE(byte_string_c != byte_string_c3);
EXPECT_TRUE(byte_string_c1 != byte_string_c);
EXPECT_TRUE(byte_string_c2 != byte_string_c);
EXPECT_TRUE(byte_string_c3 != byte_string_c);
ByteString byte_string_same1("hello");
EXPECT_FALSE(byte_string_c != byte_string_same1);
EXPECT_FALSE(byte_string_same1 != byte_string_c);
ByteString byte_string1("he");
ByteString byte_string2("hellp");
ByteString byte_string3("hellod");
EXPECT_TRUE(byte_string_c != byte_string1);
EXPECT_TRUE(byte_string_c != byte_string2);
EXPECT_TRUE(byte_string_c != byte_string3);
EXPECT_TRUE(byte_string1 != byte_string_c);
EXPECT_TRUE(byte_string2 != byte_string_c);
EXPECT_TRUE(byte_string3 != byte_string_c);
const char* const c_string_same1 = "hello";
EXPECT_FALSE(byte_string_c != c_string_same1);
EXPECT_FALSE(c_string_same1 != byte_string_c);
const char* const c_string1 = "he";
const char* const c_string2 = "hellp";
const char* const c_string3 = "hellod";
EXPECT_TRUE(byte_string_c != c_string1);
EXPECT_TRUE(byte_string_c != c_string2);
EXPECT_TRUE(byte_string_c != c_string3);
EXPECT_TRUE(c_string1 != byte_string_c);
EXPECT_TRUE(c_string2 != byte_string_c);
EXPECT_TRUE(c_string3 != byte_string_c);
}
TEST(ByteStringView, NullIterator) {
ByteStringView null_str;
int32_t sum = 0;
bool any_present = false;
for (const auto& c : null_str) {
sum += c; // Avoid unused arg warnings.
any_present = true;
}
EXPECT_FALSE(any_present);
EXPECT_EQ(0, sum);
}
TEST(ByteStringView, EmptyIterator) {
ByteStringView empty_str("");
int32_t sum = 0;
bool any_present = false;
for (const auto& c : empty_str) {
any_present = true;
sum += c; // Avoid unused arg warnings.
}
EXPECT_FALSE(any_present);
EXPECT_EQ(0, sum);
}
TEST(ByteStringView, OneCharIterator) {
ByteStringView one_str("a");
int32_t sum = 0;
bool any_present = false;
for (const auto& c : one_str) {
any_present = true;
sum += c; // Avoid unused arg warnings.
}
EXPECT_TRUE(any_present);
EXPECT_EQ('a', sum);
}
TEST(ByteStringView, MultiCharIterator) {
ByteStringView one_str("abc");
int32_t sum = 0;
bool any_present = false;
for (const auto& c : one_str) {
any_present = true;
sum += c; // Avoid unused arg warnings.
}
EXPECT_TRUE(any_present);
EXPECT_EQ('a' + 'b' + 'c', sum);
}
TEST(ByteStringView, EmptyReverseIterator) {
ByteStringView empty;
auto iter = empty.rbegin();
EXPECT_TRUE(iter == empty.rend());
EXPECT_FALSE(iter != empty.rend());
EXPECT_FALSE(iter < empty.rend());
}
TEST(ByteStringView, OneCharReverseIterator) {
ByteStringView one_str("a");
auto iter = one_str.rbegin();
EXPECT_FALSE(iter == one_str.rend());
EXPECT_TRUE(iter != one_str.rend());
EXPECT_TRUE(iter < one_str.rend());
char ch = *iter++;
EXPECT_EQ('a', ch);
EXPECT_TRUE(iter == one_str.rend());
EXPECT_FALSE(iter != one_str.rend());
EXPECT_FALSE(iter < one_str.rend());
}
TEST(ByteStringView, MultiCharReverseIterator) {
ByteStringView multi_str("abcd");
auto iter = multi_str.rbegin();
EXPECT_FALSE(iter == multi_str.rend());
char ch = *iter++;
EXPECT_EQ('d', ch);
EXPECT_EQ('c', *iter);
EXPECT_FALSE(iter == multi_str.rend());
ch = *(++iter);
EXPECT_EQ('b', ch);
EXPECT_EQ('b', *iter);
EXPECT_FALSE(iter == multi_str.rend());
ch = *iter++;
EXPECT_EQ('b', ch);
EXPECT_EQ('a', *iter);
EXPECT_FALSE(iter == multi_str.rend());
ch = *iter++;
EXPECT_EQ('a', ch);
EXPECT_TRUE(iter == multi_str.rend());
ch = *(--iter);
EXPECT_EQ('a', ch);
EXPECT_EQ('a', *iter);
EXPECT_FALSE(iter == multi_str.rend());
ch = *iter--;
EXPECT_EQ('a', ch);
EXPECT_EQ('b', *iter);
EXPECT_FALSE(iter == multi_str.rend());
ch = *iter--;
EXPECT_EQ('b', ch);
EXPECT_EQ('c', *iter);
EXPECT_FALSE(iter == multi_str.rend());
ch = *(--iter);
EXPECT_EQ('d', ch);
EXPECT_EQ('d', *iter);
EXPECT_TRUE(iter == multi_str.rbegin());
}
TEST(ByteStringView, AnyAllNoneOf) {
ByteStringView str("aaaaaaaaaaaaaaaaab");
EXPECT_FALSE(std::all_of(str.begin(), str.end(),
[](const char& c) { return c == 'a'; }));
EXPECT_FALSE(std::none_of(str.begin(), str.end(),
[](const char& c) { return c == 'a'; }));
EXPECT_TRUE(std::any_of(str.begin(), str.end(),
[](const char& c) { return c == 'a'; }));
EXPECT_TRUE(pdfium::Contains(str, 'a'));
EXPECT_TRUE(pdfium::Contains(str, 'b'));
EXPECT_FALSE(pdfium::Contains(str, 'z'));
}
TEST(ByteString, FormatWidth) {
EXPECT_EQ(" 1", ByteString::Format("%5d", 1));
EXPECT_EQ("1", ByteString::Format("%d", 1));
EXPECT_EQ(" 1", ByteString::Format("%*d", 5, 1));
EXPECT_EQ("1", ByteString::Format("%-1d", 1));
EXPECT_EQ("1", ByteString::Format("%0d", 1));
}
TEST(ByteString, FormatPrecision) {
EXPECT_EQ("1.12", ByteString::Format("%.2f", 1.12345));
EXPECT_EQ("1.123", ByteString::Format("%.*f", 3, 1.12345));
EXPECT_EQ("1.123450", ByteString::Format("%f", 1.12345));
EXPECT_EQ("1.123450", ByteString::Format("%-1f", 1.12345));
EXPECT_EQ("1.123450", ByteString::Format("%0f", 1.12345));
}
TEST(ByteString, Empty) {
ByteString empty_str;
EXPECT_TRUE(empty_str.IsEmpty());
EXPECT_EQ(0u, empty_str.GetLength());
const char* cstr = empty_str.c_str();
EXPECT_NE(nullptr, cstr);
EXPECT_EQ(0u, strlen(cstr));
const uint8_t* rstr = empty_str.raw_str();
EXPECT_EQ(nullptr, rstr);
pdfium::span<const char> cspan = empty_str.span();
EXPECT_TRUE(cspan.empty());
EXPECT_EQ(nullptr, cspan.data());
pdfium::span<const uint8_t> rspan = empty_str.raw_span();
EXPECT_TRUE(rspan.empty());
EXPECT_EQ(nullptr, rspan.data());
}
TEST(ByteString, InitializerList) {
ByteString many_str({"clams", " and ", "oysters"});
EXPECT_EQ("clams and oysters", many_str);
many_str = {"fish", " and ", "chips", " and ", "soda"};
EXPECT_EQ("fish and chips and soda", many_str);
}
TEST(ByteString, NullIterator) {
ByteString null_str;
int32_t sum = 0;
bool any_present = false;
for (const auto& c : null_str) {
sum += c; // Avoid unused arg warnings.
any_present = true;
}
EXPECT_FALSE(any_present);
EXPECT_EQ(0, sum);
}
TEST(ByteString, EmptyIterator) {
ByteString empty_str("");
int32_t sum = 0;
bool any_present = false;
for (const auto& c : empty_str) {
any_present = true;
sum += c; // Avoid unused arg warnings.
}
EXPECT_FALSE(any_present);
EXPECT_EQ(0, sum);
}
TEST(ByteString, OneCharIterator) {
ByteString one_str("a");
int32_t sum = 0;
bool any_present = false;
for (const auto& c : one_str) {
any_present = true;
sum += c; // Avoid unused arg warnings.
}
EXPECT_TRUE(any_present);
EXPECT_EQ('a', sum);
}
TEST(ByteString, MultiCharIterator) {
ByteString one_str("abc");
int32_t sum = 0;
bool any_present = false;
for (const auto& c : one_str) {
any_present = true;
sum += c; // Avoid unused arg warnings.
}
EXPECT_TRUE(any_present);
EXPECT_EQ('a' + 'b' + 'c', sum);
}
TEST(ByteString, StdBegin) {
ByteString one_str("abc");
std::vector<uint8_t> vec(std::begin(one_str), std::end(one_str));
ASSERT_EQ(3u, vec.size());
EXPECT_EQ('a', vec[0]);
EXPECT_EQ('b', vec[1]);
EXPECT_EQ('c', vec[2]);
}
TEST(ByteString, AnyAllNoneOf) {
ByteString str("aaaaaaaaaaaaaaaaab");
EXPECT_FALSE(std::all_of(str.begin(), str.end(),
[](const char& c) { return c == 'a'; }));
EXPECT_FALSE(std::none_of(str.begin(), str.end(),
[](const char& c) { return c == 'a'; }));
EXPECT_TRUE(std::any_of(str.begin(), str.end(),
[](const char& c) { return c == 'a'; }));
EXPECT_TRUE(pdfium::Contains(str, 'a'));
EXPECT_TRUE(pdfium::Contains(str, 'b'));
EXPECT_FALSE(pdfium::Contains(str, 'z'));
}
TEST(CFX_BytrString, EqualNoCase) {
ByteString str("aaa");
EXPECT_TRUE(str.EqualNoCase("aaa"));
EXPECT_TRUE(str.EqualNoCase("AAA"));
EXPECT_TRUE(str.EqualNoCase("aaA"));
EXPECT_TRUE(str.EqualNoCase("Aaa"));
EXPECT_FALSE(str.EqualNoCase("aab"));
EXPECT_FALSE(str.EqualNoCase("aaaa"));
EXPECT_FALSE(str.EqualNoCase("BBBB"));
EXPECT_FALSE(str.EqualNoCase("a"));
EXPECT_FALSE(str.EqualNoCase(""));
}
TEST(ByteString, OStreamOverload) {
std::ostringstream stream;
// Basic case, empty string
ByteString str;
stream << str;
EXPECT_EQ("", stream.str());
// Basic case, non-empty string
str = "def";
stream.str("");
stream << "abc" << str << "ghi";
EXPECT_EQ("abcdefghi", stream.str());
// Changing the ByteString does not change the stream it was written to.
str = "123";
EXPECT_EQ("abcdefghi", stream.str());
// Writing it again to the stream will use the latest value.
stream.str("");
stream << "abc" << str << "ghi";
EXPECT_EQ("abc123ghi", stream.str());
char stringWithNulls[]{'x', 'y', '\0', 'z'};
// Writing a ByteString with nulls and no specified length treats it as
// a C-style null-terminated string.
str = ByteString(stringWithNulls);
EXPECT_EQ(2u, str.GetLength());
stream.str("");
stream << str;
EXPECT_EQ(2u, stream.tellp());
// Writing a ByteString with nulls but specifying its length treats it as
// a C++-style string.
str = ByteString(stringWithNulls, 4);
EXPECT_EQ(4u, str.GetLength());
stream.str("");
stream << str;
EXPECT_EQ(4u, stream.tellp());
// << operators can be chained.
ByteString str1("abc");
ByteString str2("def");
stream.str("");
stream << str1 << str2;
EXPECT_EQ("abcdef", stream.str());
}
TEST(ByteStringView, OStreamOverload) {
// Basic case, empty string
{
std::ostringstream stream;
ByteStringView str;
stream << str;
EXPECT_EQ("", stream.str());
}
// Basic case, non-empty string
{
std::ostringstream stream;
ByteStringView str("def");
stream << "abc" << str << "ghi";
EXPECT_EQ("abcdefghi", stream.str());
}
// Changing the ByteStringView does not change the stream it was written to.
{
std::ostringstream stream;
ByteStringView str("abc");
stream << str;
str = "123";
EXPECT_EQ("abc", stream.str());
}
// Writing it again to the stream will use the latest value.
{
std::ostringstream stream;
ByteStringView str("abc");
stream << str;
stream.str("");
str = "123";
stream << str;
EXPECT_EQ("123", stream.str());
}
// Writing a ByteStringView with nulls and no specified length treats it as
// a C-style null-terminated string.
{
std::ostringstream stream;
char stringWithNulls[]{'x', 'y', '\0', 'z'};
ByteStringView str(stringWithNulls);
EXPECT_EQ(2u, str.GetLength());
stream << str;
EXPECT_EQ(2u, stream.tellp());
str = "";
}
// Writing a ByteStringView with nulls but specifying its length treats it as
// a C++-style string.
{
std::ostringstream stream;
char stringWithNulls[]{'x', 'y', '\0', 'z'};
ByteStringView str(stringWithNulls, 4);
EXPECT_EQ(4u, str.GetLength());
stream << str;
EXPECT_EQ(4u, stream.tellp());
str = "";
}
// << operators can be chained.
{
std::ostringstream stream;
ByteStringView str1("abc");
ByteStringView str2("def");
stream << str1 << str2;
EXPECT_EQ("abcdef", stream.str());
}
}
TEST(ByteString, FormatInteger) {
// Base case of 0.
EXPECT_EQ("0", ByteString::FormatInteger(0));
// Positive ordinary number.
EXPECT_EQ("123456", ByteString::FormatInteger(123456));
// Negative ordinary number.
EXPECT_EQ("-123456", ByteString::FormatInteger(-123456));
// int limits.
EXPECT_EQ("2147483647", ByteString::FormatInteger(INT_MAX));
EXPECT_EQ("-2147483648", ByteString::FormatInteger(INT_MIN));
}
TEST(ByteString, FX_HashCode_Ascii) {
EXPECT_EQ(0u, FX_HashCode_GetA(""));
EXPECT_EQ(65u, FX_HashCode_GetA("A"));
EXPECT_EQ(97u, FX_HashCode_GetLoweredA("A"));
EXPECT_EQ(31 * 65u + 66u, FX_HashCode_GetA("AB"));
EXPECT_EQ(31u * 65u + 255u, FX_HashCode_GetA("A\xff"));
EXPECT_EQ(31u * 97u + 255u, FX_HashCode_GetLoweredA("A\xff"));
}
TEST(ByteString, FX_HashCode_Wide) {
EXPECT_EQ(0u, FX_HashCode_GetAsIfW(""));
EXPECT_EQ(65u, FX_HashCode_GetAsIfW("A"));
EXPECT_EQ(97u, FX_HashCode_GetLoweredAsIfW("A"));
EXPECT_EQ(1313u * 65u + 66u, FX_HashCode_GetAsIfW("AB"));
EXPECT_EQ(1313u * 65u + 255u, FX_HashCode_GetAsIfW("A\xff"));
EXPECT_EQ(1313u * 97u + 255u, FX_HashCode_GetLoweredAsIfW("A\xff"));
}
} // namespace fxcrt