1 files changed, 78 insertions, 0 deletions
diff --git a/t/051-deflate-flush.t b/t/051-deflate-flush.t
new file mode 100644
index 0000000..36d40cf
--- /dev/null
+++ b/t/051-deflate-flush.t
@@ -0,0 +1,78 @@
+# -*- mode: perl -*-
+
+use Test::More tests => 5;
+#use Test::More qw(no_plan);
+
+## test bzflush
+## stream compress sample2 from the bzip2 1.0.2 distribution
+## verify bunzip2 can reconstruct the output
+
+BEGIN {
+  use_ok('Compress::Bzip2');
+};
+
+our ( $debugf, $BZIP );
+
+do 't/lib.pl';
+
+my $INFILE = catfile( qw(bzlib-src sample2.ref) );
+( my $MODELFILE = $INFILE ) =~ s/\.ref$/.bz2/;
+my $PREFIX = catfile( qw(t 051-tmp) );
+
+my ( $in, $out, $d, $outbuf, $counter, $bytes, $bytesout, $flushcount, $bytesflushedmark );
+
+open( $in, "< $INFILE" ) or die "$INFILE: $!";
+open( $out, "> $PREFIX-out.bz2" ) or die "$PREFIX-out.bz2: $!";
+
+## verbosity 0-4, small 0,1, blockSize100k 1-9, workFactor 0-250, readUncompressed 0,1
+$d = bzdeflateInit( -verbosity => $debugf ? 4 : 0 );
+
+ok( $d, "bzdeflateInit was successful" );
+
+$counter = 0;
+$bytes = 0;
+$bytesout = 0;
+$bytesflushedmark = 0;
+$flushcount = 0;
+while ( my $ln = sysread( $in, $buf, 512 ) ) {
+  $outbuf = $d->bzdeflate( $buf );
+  if ( !defined($outbuf) ) {
+    print STDERR "error: $outbuf $bzerrno\n";
+    last;
+  }
+
+  if ( $bytes - $bytesflushedmark > 50_000 && $outbuf eq '' ) {
+    $outbuf = $d->bzflush;
+    $flushcount++ if $outbuf;
+    $bytesflushedmark = $bytes;
+  }
+
+  if ( $outbuf ne '' ) {
+    syswrite( $out, $outbuf );
+    $bytesout += length($outbuf);
+  }
+
+  $bytes += $ln;
+  $counter++;
+}
+
+$outbuf = $d->bzclose;
+if ( defined($outbuf) && $outbuf ne '' ) {
+  syswrite( $out, $outbuf );
+  $bytesout += length($outbuf);
+  
+  $counter++;
+}
+
+ok( $bytes && $bytesout, "$counter blocks read, $bytes bytes in, $bytesout bytes out" );
+ok( $flushcount, "successful flushes at 50,000 - $flushcount" );
+
+close($in);
+close($out);
+
+system( "$BZIP -d < $PREFIX-out.bz2 > $PREFIX-reference-out-bunzip2.txt" );
+#system( "od -x < $INFILE > $PREFIX-infile.odx" );
+#system( "diff $PREFIX-infile.odx $PREFIX-reference-out-bunzip.odx > $PREFIX-diff.txt" );
+#ok( ! -s "$PREFIX-diff.txt", "no differences with bzip2" );
+
+ok ( compare_binary_files( $INFILE, "$PREFIX-reference-out-bunzip2.txt" ), "no differences with 50k stream compressing $INFILE" );