public async Task WriteFromString_FileDoesNotExists_CreatesNewFile()
{
var mockFileSystem = new MockFileSystem();
var service = new TxtWriteService(mockFileSystem, "", _fileName);
await service.WriteFromString("");
Assert.True(mockFileSystem.File.Exists($"{_fileName}.txt"));
}
public async Task CreateFile_ValidCall()
{
var mockFileSystem = new MockFileSystem();
var service = new TxtWriteService(mockFileSystem, "", _fileName);
await service.CreateFile();
Assert.True(mockFileSystem.File.Exists($"{_fileName}.txt"));
}
public async Task WriteFromString_FileContainsText_AddsNewText()
{
var mockFileSystem = new MockFileSystem();
mockFileSystem.File.AppendAllText($"{_fileName}.txt", "123");
var service = new TxtWriteService(mockFileSystem, "", _fileName);
await service.WriteFromString("321");
var file = mockFileSystem.File.ReadAllLines($"{_fileName}.txt");
Assert.Equal("123321", file[0]);
}
public async Task WriteFromString_EmptyFileExists_AddsNewText()
{
var mockFileSystem = new MockFileSystem();
var service = new TxtWriteService(mockFileSystem, "", _fileName);
mockFileSystem.File.Create($"{_fileName}.txt");
await service.WriteFromString("test");
var file = mockFileSystem.File.ReadAllLines($"{_fileName}.txt");
Assert.Equal("test", file[0]);
}
public async Task CreateFile_FileAlreadyExists_OverridesOldFile()
{
var mockFileSystem = new MockFileSystem();
var service = new TxtWriteService(mockFileSystem, "", _fileName);
mockFileSystem.File.AppendAllText($"{_fileName}.txt", "123");
await service.CreateFile();
var file = mockFileSystem.File.ReadAllLines($"{_fileName}.txt");
Assert.Empty(file);
}
