public void ParseTrustedBundleFromFileRaisesExceptionWithInvalidTBFile() { string testFile = Path.GetRandomFileName(); Assert.Throws <ArgumentException>(() => CertificateHelper.ParseTrustedBundleFromFile(null)); Assert.Throws <ArgumentException>(() => CertificateHelper.ParseTrustedBundleFromFile(string.Empty)); Assert.Throws <ArgumentException>(() => CertificateHelper.ParseTrustedBundleFromFile(" ")); Assert.Throws <ArgumentException>(() => CertificateHelper.ParseTrustedBundleFromFile(testFile)); }