},
		expectedErrorSubstring: "runAsUserName cannot be an empty string",
	}, {
		testName: "RunAsUserName containing a control character",
		windowsOptions: &core.WindowsSecurityContextOptions{
			RunAsUserName: toPtr("Container\tUser"),
		},
		expectedErrorSubstring: "runAsUserName cannot contain control characters",
	}, {
		testName: "RunAsUserName containing too many backslashes",