test_writer.rb in hexapdf-0.20.3

- old
+ new

@@ -38,11 +38,11 @@
       <</Size 3/Prev 54>>
       startxref
       219
       %%EOF
       3 0 obj
-      <</Producer(HexaPDF version 0.20.2)>>
+      <</Producer(HexaPDF version 0.20.3)>>
       endobj
       xref
       3 1
       0000000296 00000 n 
       trailer
@@ -70,11 +70,11 @@
       endobj
       startxref
       141
       %%EOF
       6 0 obj
-      <</Producer(HexaPDF version 0.20.2)>>
+      <</Producer(HexaPDF version 0.20.3)>>
       endobj
       2 0 obj
       <</Length 10>>stream
       Some data!
       endstream
@@ -120,9 +120,20 @@
       doc = HexaPDF::Document.new(io: @compressed_input_io)
       doc.pages.add
       output_io = StringIO.new
       HexaPDF::Writer.write(doc, output_io, incremental: true)
       refute_match(/^trailer/, output_io.string)
+    end
+
+    it "raises an error if the used encryption was changed" do
+      io = StringIO.new
+      doc = HexaPDF::Document.new
+      doc.encrypt
+      doc.write(io)
+
+      doc = HexaPDF::Document.new(io: io)
+      doc.encrypt(owner_password: 'test')
+      assert_raises(HexaPDF::Error) { doc.write('notused', incremental: true) }
     end
   end
 
   it "creates an xref stream if no xref stream is in a revision but object streams are" do
     document = HexaPDF::Document.new