--- /dev/null
+use strict;
+use Test::More;
+
+use lib 't';
+
+use_ok 'Support::TestSetup';
+use SL::DATEV::CSV qw(check_text);
+use Support::TestSetup;
+
+use utf8;
+Support::TestSetup::login();
+
+my $ascii = 'foobar 443334 hallo';
+my $german = 'üßäüö €';
+my $croatia = 'Kulašić hat viele €';
+my $armenian = 'Հայերեն ֏';
+
+is 1, SL::DATEV::CSV::check_encoding($ascii), 'ASCII Encoding';
+is 1, SL::DATEV::CSV::check_encoding($german), 'German umlaut, euro and ligatur Encoding';
+is undef, SL::DATEV::CSV::check_encoding($croatia), 'croatia with euro Encoding';
+is undef, SL::DATEV::CSV::check_encoding($armenian), 'armenian Encoding';
+
+done_testing;