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#include <gtest/gtest.h>
#include <filesystem>
#include <string>
#include <system_error>
#include <stdlib.h>
#include "libreichwein/file.h"
#include "diff.h"
namespace fs = std::filesystem;
using namespace Reichwein;
class DiffTest: public ::testing::Test
{
protected:
DiffTest(){
}
~DiffTest(){
}
};
TEST_F(DiffTest, constructor)
{
// empty constructor
{
Diff d{};
EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data/></diff>");
}
// constructor via xml diff
{
EXPECT_THROW(Diff d{""}, std::exception);
}
{
EXPECT_THROW(Diff d{"<diff><begin></begin></diff>"}, std::exception);
EXPECT_THROW(Diff d{"<diff><end>0</end><data>abc</data></diff>"}, std::exception);
EXPECT_THROW(Diff d{"<diff><start>0</start><data>abc</data></diff>"}, std::exception);
EXPECT_THROW(Diff d{"<diff><start>0</start><end>0</end></diff>"}, std::exception);
EXPECT_THROW(Diff d{"<diff><start>5</start><end>0</end><data>abc</data></diff>"}, std::exception);
EXPECT_THROW(Diff d{"<diff><start></start><end>0</end><data>abc</data></diff>"}, std::exception);
}
{
Diff d{"<diff><start>0</start><end>0</end><data>abc</data></diff>"};
EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data>abc</data></diff>");
}
{
Diff d{"<diff><start>5</start><end>5</end><data>abc</data></diff>"};
EXPECT_EQ(d.get_xml(), "<diff><start>5</start><end>5</end><data>abc</data></diff>");
}
{
Diff d{"<diff><start>5</start><end>50</end><data>abc</data></diff>"};
EXPECT_EQ(d.get_xml(), "<diff><start>5</start><end>50</end><data>abc</data></diff>");
}
// constructor via versions
{
Diff d{"", ""};
EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data/></diff>");
}
{
Diff d{"a", "a"};
EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data/></diff>");
}
{
Diff d{"a", "b"};
EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>1</end><data>b</data></diff>");
}
{
Diff d{"0a1", "0b1"};
EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>2</end><data>b</data></diff>");
}
{
Diff d{"0abc1", "00b01"};
EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>4</end><data>0b0</data></diff>");
}
{
Diff d{"0ab1", "00b01"};
EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>3</end><data>0b0</data></diff>");
}
{
Diff d{"0abc1", "00b1"};
EXPECT_EQ(d.get_xml(), "<diff><start>1</start><end>4</end><data>0b</data></diff>");
}
{
Diff d{"0abc1", ""};
EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>5</end><data/></diff>");
}
{
Diff d{"bc1", "0abc1"};
EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data>0a</data></diff>");
}
{
Diff d{"0abc1", "0ab"};
EXPECT_EQ(d.get_xml(), "<diff><start>3</start><end>5</end><data/></diff>");
}
{
Diff d{"0abc1", "0abc123"};
EXPECT_EQ(d.get_xml(), "<diff><start>5</start><end>5</end><data>23</data></diff>");
}
{
Diff d{"0abc1", "010abc1"};
EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>0</end><data>01</data></diff>");
}
{
Diff d{"0abc1", "0ac1"};
EXPECT_EQ(d.get_xml(), "<diff><start>2</start><end>3</end><data/></diff>");
}
{
Diff d{"0abc1", "0abxc1"};
EXPECT_EQ(d.get_xml(), "<diff><start>3</start><end>3</end><data>x</data></diff>");
}
{
Diff d{"abc", "c"};
EXPECT_EQ(d.get_xml(), "<diff><start>0</start><end>2</end><data/></diff>");
}
}
TEST_F(DiffTest, diff_create)
{
const char* result {diff_create("0abc1", "0ab")};
EXPECT_EQ(std::string(result), "<diff><start>3</start><end>5</end><data/></diff>");
free((void*)result); // this will be done by javascript side in real scenario
}
TEST_F(DiffTest, diff_apply)
{
const char* result {diff_apply("0abc1", "<diff><start>3</start><end>5</end><data/></diff>")};
EXPECT_EQ(std::string(result), "0ab");
free((void*)result); // this will be done by javascript side in real scenario
}
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