test_writer.rb in hexapdf-0.9.0

- old
+ new

@@ -38,11 +38,11 @@
       <</Size 3/Prev 54>>
       startxref
       219
       %%EOF
       3 0 obj
-      <</Producer(HexaPDF version 0.8.0)>>
+      <</Producer(HexaPDF version 0.9.0)>>
       endobj
       xref
       3 1
       0000000296 00000 n 
       trailer
@@ -70,11 +70,11 @@
       endobj
       startxref
       141
       %%EOF
       6 0 obj
-      <</Producer(HexaPDF version 0.8.0)>>
+      <</Producer(HexaPDF version 0.9.0)>>
       endobj
       2 0 obj
       <</Length 10>>stream
       Some data!
       endstream
@@ -99,9 +99,20 @@
   end
 
   it "writes a complete document" do
     assert_document_conversion(@std_input_io)
     assert_document_conversion(@compressed_input_io)
+  end
+
+  it "writes a document in incremental mode" do
+    doc = HexaPDF::Document.new(io: @std_input_io)
+    doc.pages.add
+    output_io = StringIO.new
+    HexaPDF::Writer.write(doc, output_io, incremental: true)
+    assert_equal(output_io.string[0, @std_input_io.string.length], @std_input_io.string)
+    doc = HexaPDF::Document.new(io: output_io)
+    assert_equal(4, doc.revisions.size)
+    assert_equal(2, doc.revisions.current.each.to_a.size)
   end
 
   it "raises an error if no xref stream is in a revision but object streams are" do
     document = HexaPDF::Document.new
     document.add(Type: :ObjStm)