public void GetDirectories_should_return_expected_results()
{
var fileResolver = new FileResolver();
var tempDir = Path.Combine(Path.GetTempPath(), $"BICEP_TESTDIR_{Guid.NewGuid()}");
var tempFile = Path.Combine(tempDir, $"BICEP_TEST_{Guid.NewGuid()}");
var tempChildDir = Path.Combine(tempDir, $"BICEP_TESTCHILDDIR_{Guid.NewGuid()}");
// make parent dir
Directory.CreateDirectory(tempDir);
fileResolver.GetDirectories(PathHelper.FilePathToFileUrl(tempDir)).Should().HaveCount(0);
// make child dir
Directory.CreateDirectory(tempChildDir);
fileResolver.GetDirectories(PathHelper.FilePathToFileUrl(tempDir)).Should().HaveCount(1);
// add a file to parent dir
File.WriteAllText(tempFile, "abcd\r\ndef");
fileResolver.GetDirectories(PathHelper.FilePathToFileUrl(tempDir)).Should().HaveCount(1);
// check child dir
fileResolver.GetDirectories(PathHelper.FilePathToFileUrl(tempChildDir)).Should().HaveCount(0);
// should throw an IOException when called with a file path
fileResolver.GetDirectories(PathHelper.FilePathToFileUrl(Path.Join(Path.GetTempPath(), tempFile)));
}