public async Task MockFile_AppendAllTextAsync_ShouldPersistNewTextWithCustomEncoding()
{
// Arrange
string path = XFS.Path(@"c:\something\demo.txt");
var fileSystem = new MockFileSystem(new Dictionary <string, MockFileData>
{
{ path, new MockFileData("Demo text content") }
});
var file = new MockFile(fileSystem);
// Act
await file.AppendAllTextAsync(path, "+ some text", Encoding.BigEndianUnicode);
// Assert
var expected = new byte[]
{
68, 101, 109, 111, 32, 116, 101, 120, 116, 32, 99, 111, 110, 116,
101, 110, 116, 0, 43, 0, 32, 0, 115, 0, 111, 0, 109, 0, 101,
0, 32, 0, 116, 0, 101, 0, 120, 0, 116
};
CollectionAssert.AreEqual(
expected,
file.ReadAllBytes(path));
}
public async Task MockFile_AppendAllTextAsync_ShouldPersistNewTextWithDifferentEncoding()
{
// Arrange
const string Path = @"c:\something\demo.txt";
var fileSystem = new MockFileSystem(new Dictionary <string, MockFileData>
{
{ Path, new MockFileData("AA", Encoding.UTF32) }
});
var file = new MockFile(fileSystem);
// Act
await file.AppendAllTextAsync(Path, "BB", Encoding.UTF8);
// Assert
CollectionAssert.AreEqual(
new byte[] { 255, 254, 0, 0, 65, 0, 0, 0, 65, 0, 0, 0, 66, 66 },
fileSystem.GetFile(Path).Contents);
}
public async Task MockFile_AppendAllTextAsync_ShouldPersistNewText()
{
// Arrange
string path = XFS.Path(@"c:\something\demo.txt");
var fileSystem = new MockFileSystem(new Dictionary <string, MockFileData>
{
{ path, new MockFileData("Demo text content") }
});
var file = new MockFile(fileSystem);
// Act
await file.AppendAllTextAsync(path, "+ some text");
// Assert
Assert.AreEqual(
"Demo text content+ some text",
file.ReadAllText(path));
}