public async Task TestFileReadMissing()
{
string tempFile = "TEMPDATADOESNTEXISTS";
var sut = new FileReaderProvider();
var result = await Assert.
ThrowsAnyAsync <IOException>(async() => await sut.ReadFileAsStringAsync(tempFile));
}
public async Task TestFileLocked()
{
string tempFile = Path.GetTempFileName();
try
{
using FileStream fs = new FileStream(tempFile, FileMode.Open);
var sut = new FileReaderProvider();
var result = await Assert.ThrowsAsync <IOException>(async() => await sut.ReadFileAsStringAsync(tempFile));
}
finally
{
File.Delete(tempFile);
}
}
public async Task TestFileReadExists(string testText)
{
string tempFile = Path.GetTempFileName();
try
{
File.WriteAllText(tempFile, testText);
var sut = new FileReaderProvider();
string result = await sut.ReadFileAsStringAsync(tempFile);
Assert.Equal(testText, result);
}
finally
{
File.Delete(tempFile);
}
}