public async Task MockFile_AppendAllLinesAsync_ShouldPersistNewLinesToNewFile()
{
// Arrange
string path = XFS.Path(@"c:\something\demo.txt");
var fileSystem = new MockFileSystem(new Dictionary <string, MockFileData>
{
{ XFS.Path(@"c:\something\"), new MockDirectoryData() }
});
var file = new MockFile(fileSystem);
// Act
await file.AppendAllLinesAsync(path, new[] { "line 1", "line 2", "line 3" });
// Assert
Assert.AreEqual(
"line 1" + Environment.NewLine + "line 2" + Environment.NewLine + "line 3" + Environment.NewLine,
file.ReadAllText(path));
}