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# -*- coding: US-ASCII -*-
require 'zlib'
require File.expand_path('../../../../spec_helper', __FILE__)
describe "Zlib::Inflate#inflate" do
before :each do
@inflator = Zlib::Inflate.new
end
it "inflates some data" do
data = "x\234c`\200\001\000\000\n\000\001"
unzipped = @inflator.inflate data
@inflator.finish
unzipped.should == "\000" * 10
end
it "inflates lots of data" do
data = "x\234\355\301\001\001\000\000\000\200\220\376\257\356\b\n#{"\000" * 31}\030\200\000\000\001"
unzipped = @inflator.inflate data
@inflator.finish
unzipped.should == "\000" * 32 * 1024
end
it "works in pass-through mode, once finished" do
data = "x\234c`\200\001\000\000\n\000\001"
unzipped = @inflator.inflate data
@inflator.finish # this is a precondition
out = @inflator.inflate('uncompressed_data')
out << @inflator.finish
out.should == 'uncompressed_data'
@inflator << ('uncompressed_data') << nil
@inflator.finish.should == 'uncompressed_data'
end
end
describe "Zlib::Inflate::inflate" do
it "inflates some data" do
data = "x\234c`\200\001\000\000\n\000\001"
unzipped = Zlib::Inflate.inflate data
unzipped.should == "\000" * 10
end
it "inflates lots of data" do
data = "x\234\355\301\001\001\000\000\000\200\220\376\257\356\b\n#{"\000" * 31}\030\200\000\000\001"
zipped = Zlib::Inflate.inflate data
zipped.should == "\000" * 32 * 1024
end
it "properly handles data in chunks" do
data = "x\234K\313\317\a\000\002\202\001E"
z = Zlib::Inflate.new
# add bytes, one by one
result = ""
data.each_byte { |d| result << z.inflate(d.chr)}
result << z.finish
result.should == "foo"
end
it "properly handles incomplete data" do
data = "x\234K\313\317\a\000\002\202\001E"[0,5]
z = Zlib::Inflate.new
# add bytes, one by one, but not all
result = ""
data.each_byte { |d| result << z.inflate(d.chr)}
lambda { result << z.finish }.should raise_error(Zlib::BufError)
end
it "properly handles excessive data, byte-by-byte" do
main_data = "x\234K\313\317\a\000\002\202\001E"
data = main_data * 2
result = ""
z = Zlib::Inflate.new
# add bytes, one by one
data.each_byte { |d| result << z.inflate(d.chr)}
result << z.finish
# the first chunk is inflated to its completion,
# the second chunk is just passed through.
result.should == "foo" + main_data
end
it "properly handles excessive data, in one go" do
main_data = "x\234K\313\317\a\000\002\202\001E"
data = main_data * 2
result = ""
z = Zlib::Inflate.new
result << z.inflate(data)
result << z.finish
# the first chunk is inflated to its completion,
# the second chunk is just passed through.
result.should == "foo" + main_data
end
end
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