html = format_value("phone", "+1234567890")
assert_dom_equal "<a href=\"tel:+1234567890\" title=\"Call +1234567890\">+1234567890</a>", html
html = format_value("phone", "+1234567890")
assert_dom_equal "<a href=\"tel:+1234567890\" title=\"Call +1234567890\">+1234567890</a>", html