--- /dev/null
+#!/usr/bin/perl
+
+BEGIN {
+ chdir 't' if -d 't';
+ unshift @INC, '../blib/lib';
+}
+
+use strict;
+use warnings;
+
+use Carp;
+
+use constant SUBTESTS_PER_TESTS => 6;
+
+use constant TESTS =>(
+ ["ok", "my warning", "my warning", "standard warning to find"],
+ ["not ok", "my warning", "another warning", "another warning instead of my warning"],
+ ["not ok", "warning general not", "warning general", "quite only a sub warning"],
+ ["not ok", undef, "a warning", "no warning, but expected one"],
+ ["not ok", "a warning", undef, "warning, but didn't expect one"],
+ ["ok", undef, undef, "no warning"],
+ ["ok", '$!"%&/()=', '$!"%&/()=', "warning with crazy letters"],
+ ["not ok", "warning 1|warning 2", "warning1", "more than one warning"]
+);
+
+use Test::Builder::Tester tests => TESTS() * SUBTESTS_PER_TESTS;
+use Test::Warn;
+use Test::Exception;
+
+Test::Builder::Tester::color 'on';
+
+use constant WARN_LINE => line_num +2;
+sub _make_warn {
+ warn $_ for grep $_, split m:\|:, (shift() || "");
+}
+
+use constant CARP_LINE => line_num +2;
+sub _make_carp {
+ carp $_ for grep $_, split m:\|:, (shift() || "");
+}
+
+use constant CARP_LEVELS => (0 .. 2);
+sub _create_exp_warning {
+ my ($carplevel, $warning) = @_;
+ return $warning if $carplevel == 0;
+ return {carped => $warning} if $carplevel == 1;
+ return {carped => [$warning]} if $carplevel == 2;
+}
+
+test_warning_is(@$_) foreach TESTS();
+
+sub test_warning_is {
+ my ($ok, $msg, $exp_warning, $testname) = @_;
+ for my $carp (CARP_LEVELS) {
+ *_found_msg = $carp ? *_found_carp_msg : *_found_warn_msg;
+ *_exp_msg = $carp ? *_exp_carp_msg : *_exp_warn_msg;
+ *_make_warn_or_carp = $carp ? *_make_carp : *_make_warn;
+ for my $t (undef, $testname) {
+ test_out "$ok 1" . ($t ? " - $t" : "");
+ if ($ok =~ /not/) {
+ test_fail +4;
+ test_diag _found_msg($_) for ($msg ? (split m-\|-, $msg) : $msg);
+ test_diag _exp_msg($exp_warning);
+ }
+ warning_is {_make_warn_or_carp($msg)} _create_exp_warning($carp, $exp_warning), $t;
+ test_test "$testname (with" . ($_ ? "" : "out") . " a testname)";
+ }
+ }
+}
+
+
+sub _found_warn_msg {
+ defined($_[0])
+ ? ( join " " => ("found warning:",
+ $_[0],
+ "at",
+ __FILE__,
+ "line",
+ WARN_LINE . ".") )
+ : "didn't found a warning";
+}
+
+sub _exp_warn_msg {
+ defined($_[0])
+ ? "expected to find warning: $_[0]"
+ : "didn't expect to find a warning";
+}
+
+sub _found_carp_msg {
+ defined($_[0])
+ ? ( join " " => ("found carped warning:",
+ $_[0],
+ "at",
+ __FILE__,
+ "line",
+ CARP_LINE) ) # Note the difference, that carp msg
+ : "didn't found a warning"; # aren't finished by '.'
+}
+
+sub _exp_carp_msg {
+ defined($_[0])
+ ? "expected to find carped warning: $_[0]"
+ : "didn't expect to find a warning";
+}