1 files changed, 28 insertions, 0 deletions
diff --git a/t/lib/Test/Games/SMTNocturne/Demons.pm b/t/lib/Test/Games/SMTNocturne/Demons.pm
new file mode 100644
index 0000000..5ccd8ac
--- /dev/null
+++ b/t/lib/Test/Games/SMTNocturne/Demons.pm
@@ -0,0 +1,28 @@
+package Test::Games::SMTNocturne::Demons;
+use strict;
+use warnings;
+use Exporter 'import';
+
+use Games::SMTNocturne::Demons;
+use Test::More;
+
+our @EXPORT = ('fusion_is');
+
+sub fusion_is {
+    local $Test::Builder::Level = $Test::Builder::Level + 1;
+    my ($demon1, $demon2, $expected) = @_;
+
+    my $fused = eval { Games::SMTNocturne::Demons::fuse($demon1, $demon2) };
+
+    die $@ if $@ && $@ !~ /\bnyi\b/;
+    local $TODO = $@ if $@;
+
+    if ($fused) {
+        is($fused->name, $expected);
+    }
+    else {
+        is(undef, $expected);
+    }
+}
+
+1;