reference_spec.rb in prawn-1.0.0.rc1

- old
+ new
@@ -1,25 +1,82 @@
 # encoding: utf-8
 
 require File.join(File.expand_path(File.dirname(__FILE__)), "spec_helper")
 
 describe "A Reference object" do
+  it "should produce a PDF reference on #to_s call" do
+    ref = Prawn::Core::Reference(1,true)
+    ref.to_s.should == "1 0 R"
+  end                                        
+  
+  it "should allow changing generation number" do
+    ref = Prawn::Core::Reference(1,true)
+    ref.gen = 1
+    ref.to_s.should == "1 1 R"
+  end
+  
+  it "should generate a valid PDF object for the referenced data" do
+    ref = Prawn::Core::Reference(2,[1,"foo"]) 
+    ref.object.should == "2 0 obj\n#{Prawn::Core::PdfObject([1,"foo"])}\nendobj\n" 
+  end             
+  
+  it "should automatically open a stream when #<< is used" do
+     ref = Prawn::Core::Reference(1, :Length => 41)
+     ref << "BT\n/F1 12 Tf\n72 712 Td\n( A stream ) Tj\nET"   
+     ref.object.should == "1 0 obj\n<< /Length 41\n>>\nstream"+
+                           "\nBT\n/F1 12 Tf\n72 712 Td\n( A stream ) Tj\nET" +
+                           "\nendstream\nendobj\n"
+  end
+
+  it "should compress a stream upon request" do
+    ref = Prawn::Core::Reference(2,{})
+    ref << "Hi There " * 20
+
+    cref = Prawn::Core::Reference(2,{})
+    cref << "Hi There " * 20
+    cref.compress_stream
+
+    assert cref.stream.size < ref.stream.size, 
+      "compressed stream expected to be smaller than source but wasn't"
+    cref.data[:Filter].should == :FlateDecode
+  end
+
+  it "should copy the data and stream from another ref on #replace" do
+    from = Prawn::Core::Reference(3, {:foo => 'bar'})
+    from << "has a stream too"
+
+    to = Prawn::Core::Reference(4, {:foo => 'baz'})
+    to.replace from
+
+    # should preserve identifier but copy data and stream
+    to.identifier.should == 4
+    to.data.should == from.data
+    to.stream.should == from.stream
+  end
+
+  it "should copy a compressed stream from a compressed ref on #replace" do
+    from = Prawn::Core::Reference(5, {:foo => 'bar'})
+    from << "has a stream too " * 20
+    from.compress_stream
+
+    to = Prawn::Core::Reference(6, {:foo => 'baz'})
+    to.replace from
+
+    to.identifier.should == 6
+    to.data.should == from.data
+    to.stream.should == from.stream
+    to.compressed?.should == true
+  end
+
   describe "generated via Prawn::Document" do
     it "should return a proper reference on ref!" do
       pdf = Prawn::Document.new
-      pdf.ref!({}).is_a?(PDF::Core::Reference).should == true
+      pdf.ref!({}).is_a?(Prawn::Core::Reference).should == true
     end
 
     it "should return an identifier on ref" do
       pdf = Prawn::Document.new
       r = pdf.ref({})
       r.is_a?(Integer).should == true
-    end
-
-    it "should have :Length of stream if it has one when compression disabled" do
-      pdf = Prawn::Document.new :compress => false
-      ref = pdf.ref!({})
-      ref << 'Hello'
-      ref.stream.data[:Length].should == 5
     end
   end
 end