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# coding: utf-8
require File.dirname(__FILE__) + "/spec_helper"
describe PDF::Reader::Filter do
describe "#with" do
context "when passed :ASCII85Decode" do
it "should return the appropriate class" do
PDF::Reader::Filter.with(:ASCII85Decode).should be_a(PDF::Reader::Filter::Ascii85)
end
end
context "when passed :ASCIIHexDecode" do
it "should return the appropriate class" do
PDF::Reader::Filter.with(:ASCIIHexDecode).should be_a(PDF::Reader::Filter::AsciiHex)
end
end
context "when passed :CCITTFaxDecode" do
it "should return the appropriate class" do
PDF::Reader::Filter.with(:CCITTFaxDecode).should be_a(PDF::Reader::Filter::Null)
end
end
context "when passed :DCTDecode" do
it "should return the appropriate class" do
PDF::Reader::Filter.with(:DCTDecode).should be_a(PDF::Reader::Filter::Null)
end
end
context "when passed :ASCII85Decode" do
it "should return the appropriate class" do
PDF::Reader::Filter.with(:ASCII85Decode).should be_a(PDF::Reader::Filter::Ascii85)
end
end
context "when passed :FlateDecode" do
it "should return the appropriate class" do
PDF::Reader::Filter.with(:FlateDecode).should be_a(PDF::Reader::Filter::Flate)
end
end
context "when passed :JBIG2ecode" do
it "should return the appropriate class" do
PDF::Reader::Filter.with(:JBIG2Decode).should be_a(PDF::Reader::Filter::Null)
end
end
context "when passed :JPXDecode" do
it "should return the appropriate class" do
PDF::Reader::Filter.with(:JPXDecode).should be_a(PDF::Reader::Filter::Null)
end
end
context "when passed :LZWDecode" do
it "should return the appropriate class" do
PDF::Reader::Filter.with(:LZWDecode).should be_a(PDF::Reader::Filter::Lzw)
end
end
context "when passed :RunLengthDecode" do
it "should return the appropriate class" do
PDF::Reader::Filter.with(:RunLengthDecode).should be_a(PDF::Reader::Filter::RunLength)
end
end
context "when passed an unrecognised filter" do
it "should raise an exception" do
lambda {
PDF::Reader::Filter.with(:FooDecode)
}.should raise_error(PDF::Reader::UnsupportedFeatureError)
end
end
end
end
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