Check that EOF_BLOCK gets written

test/test_bam.jl

@@ -209,6 +209,14 @@
                 close(reader)
                 close(writer)
 
+
+                # Check that EOF_BLOCK gets written.
+                nbytes = filesize(path)
+                @test BAM.BGZFStreams.EOF_BLOCK == open(path) do io
+                    seek(io, nbytes - length(BAM.BGZFStreams.EOF_BLOCK))
+                    read(io)
+                end
+
                 reader = open(BAM.Reader, path)
 
                 @test header(reader) == header_original