From 8b328c666bec4f9529acc6080cd0387d63cf8b7f Mon Sep 17 00:00:00 2001
From: Simon Skorokhodov <skorohodovsemen@gmail.com>
Date: Mon, 18 Jan 2021 10:47:26 +0100
Subject: [PATCH] Fix tests for Erlang < 20

---
 test/getopt_test.erl | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/test/getopt_test.erl b/test/getopt_test.erl
index 4c7108f..0231c7d 100644
--- a/test/getopt_test.erl
+++ b/test/getopt_test.erl
@@ -357,6 +357,7 @@ utf8_binary_test_() ->
   Utf8 = unicode:characters_to_binary(Unicode),
   io:setopts(standard_error, [{encoding, utf8}]),
   OptSpecsWithDefault = [{utf8, undefined, "utf8", {utf8_binary, Utf8}, "UTF-8 arg"}],
+  UsageBin = unicode:characters_to_binary(getopt:usage_options(OptSpecsWithDefault)),
   [{"Empty utf8_binary argument",
     ?_assertEqual({ok, {[{utf8, <<>>}], []}}, parse(OptSpecList, ["--utf8", ""]))},
    {"Non empty utf8_binary argument",
@@ -364,4 +365,4 @@ utf8_binary_test_() ->
    {"Default utf8_binary argument",
     ?_assertEqual({ok, {[{utf8, Utf8}], []}}, parse(OptSpecsWithDefault, []))},
    {"Default utf8_binary argument usage",
-    ?_assert(is_list(string:find(getopt:usage_options(OptSpecsWithDefault), Unicode)))}].
+    ?_assertEqual(1, length(binary:matches(UsageBin, Utf8)))}].