diff --git a/t/test.t b/t/test.t
index f45afb3..c080f2f 100644
--- a/t/test.t
+++ b/t/test.t
@@ -1,6 +1,7 @@
 use strict;
 use warnings;
-use Test::More tests => 3;
+use Test::TempFile;
+use Test::More tests => 4;
 use Mojo::JSON qw(decode_json encode_json to_json);
 
 use_ok('IDS::DeReKoVecs::Read');
@@ -28,4 +29,12 @@
     is( $res->{collocates}->[0]->{word}, "diesem", "primary collocate of Grund" );
 };
 
+subtest 'dump ascii vecs' => sub {
+    my $t = Test::TempFile->new();
+    $res = IDS::DeReKoVecs::Read::dump_vecs($t->path);
+    $t->exists_ok
+        ->content_like(qr/^10544 200.*/, 'ascii vecs dump')
+        ->content_like(qr/Wortzeichen -?[01]\.[0-9]/, 'ascii vecs dump contains some words');
+};
+
 done_testing;