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/** @file testCharClassify.cxx
** Unit Tests for Scintilla internal data structures
**/
#include <cstring>
#include <string_view>
#include <vector>
#include <optional>
#include <algorithm>
#include <memory>
#include <iostream>
#include "Debugging.h"
#include "CharClassify.h"
#include "catch.hpp"
using namespace Scintilla::Internal;
// Test CharClassify.
constexpr int byteValues = 256;
class CharClassifyTest {
public:
// Avoid warnings, deleted so never called.
CharClassifyTest(const CharClassifyTest &) = delete;
protected:
CharClassifyTest() {
pcc = std::make_unique<CharClassify>();
for (int ch = 0; ch < byteValues; ch++) {
if (ch == '\r' || ch == '\n')
charClass[ch] = CharacterClass::newLine;
else if (ch < 0x20 || ch == ' ' || ch == '\x7f')
charClass[ch] = CharacterClass::space;
else if (ch >= 0x80 || isalnum(ch) || ch == '_')
charClass[ch] = CharacterClass::word;
else
charClass[ch] = CharacterClass::punctuation;
}
}
std::unique_ptr<CharClassify> pcc;
CharacterClass charClass[byteValues] {};
static const char* GetClassName(CharacterClass charClass) noexcept {
switch(charClass) {
#define CASE(c) case CharacterClass::c: return #c
CASE(space);
CASE(newLine);
CASE(word);
CASE(punctuation);
#undef CASE
default:
return "<unknown>";
}
}
};
TEST_CASE_METHOD(CharClassifyTest, "Defaults") {
for (int i = 0; i < byteValues; i++) {
if (charClass[i] != pcc->GetClass(i)) {
std::cerr
<< "Character " << i
<< " should be class " << GetClassName(charClass[i])
<< ", but got " << GetClassName(pcc->GetClass(i)) << std::endl;
}
REQUIRE(charClass[i] == pcc->GetClass(i));
}
}
TEST_CASE_METHOD(CharClassifyTest, "Custom") {
unsigned char buf[2] = {0, 0};
for (int i = 0; i < byteValues; i++) {
const CharacterClass thisClass = static_cast<CharacterClass>(i % 4);
buf[0] = i;
pcc->SetCharClasses(buf, thisClass);
charClass[i] = thisClass;
}
for (int i = 0; i < byteValues; i++) {
if (charClass[i] != pcc->GetClass(i)) {
std::cerr
<< "Character " << i
<< " should be class " << GetClassName(charClass[i])
<< ", but got " << GetClassName(pcc->GetClass(i)) << std::endl;
}
REQUIRE(charClass[i] == pcc->GetClass(i));
}
}
TEST_CASE_METHOD(CharClassifyTest, "CharsOfClass") {
unsigned char buf[2] = {0, 0};
for (int i = 1; i < byteValues; i++) {
const CharacterClass thisClass = static_cast<CharacterClass>(i % 4);
buf[0] = i;
pcc->SetCharClasses(buf, thisClass);
charClass[i] = thisClass;
}
for (int classVal = 0; classVal < 4; ++classVal) {
const CharacterClass thisClass = static_cast<CharacterClass>(classVal % 4);
const int size = pcc->GetCharsOfClass(thisClass, nullptr);
std::vector<unsigned char> buffer(size+1);
const unsigned char *pBuffer = buffer.data();
pcc->GetCharsOfClass(thisClass, buffer.data());
for (int i = 1; i < byteValues; i++) {
if (charClass[i] == thisClass) {
if (!memchr(pBuffer, i, size)) {
std::cerr
<< "Character " << i
<< " should be class " << GetClassName(thisClass)
<< ", but was not in GetCharsOfClass;"
<< " it is reported to be "
<< GetClassName(pcc->GetClass(i)) << std::endl;
}
REQUIRE(memchr(pBuffer, i, size));
} else {
if (memchr(pBuffer, i, size)) {
std::cerr
<< "Character " << i
<< " should not be class " << GetClassName(thisClass)
<< ", but was in GetCharsOfClass"
<< " it is reported to be "
<< GetClassName(pcc->GetClass(i)) << std::endl;
}
REQUIRE_FALSE(memchr(pBuffer, i, size));
}
}
}
}
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