public async Task ContentEqualsAsync_ThrowsForNullStreamTaskFactory()
{
var exception = await Assert.ThrowsAsync <ArgumentNullException>(
() => FileSystemUtility.ContentEqualsAsync(
path: "a",
streamTaskFactory: null));
Assert.Equal("streamTaskFactory", exception.ParamName);
}
public async Task ContentEqualsAsync_ThrowsForNullOrEmptyPath(string path)
{
var exception = await Assert.ThrowsAsync <ArgumentException>(
() => FileSystemUtility.ContentEqualsAsync(
path: null,
streamTaskFactory: () => Task.FromResult(Stream.Null)));
Assert.Equal("path", exception.ParamName);
}
public async Task ContentEqualsAsync_ReturnsFalseIfNotEqual()
{
using (var stream = new MemoryStream(Encoding.UTF8.GetBytes("a")))
using (var testDirectory = TestDirectory.Create())
{
var filePath = Path.Combine(testDirectory.Path, "file");
File.WriteAllText(filePath, "b");
var areEqual = await FileSystemUtility.ContentEqualsAsync(
filePath,
() => Task.FromResult <Stream>(stream));
Assert.False(areEqual);
}
}