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require "spec"
require "compress/gzip"
private SAMPLE_TIME = Time.utc(2016, 1, 2)
private SAMPLE_OS = 4_u8
private SAMPLE_EXTRA = Bytes[1, 2, 3]
private SAMPLE_NAME = "foo.txt"
private SAMPLE_COMMENT = "some comment"
private SAMPLE_CONTENTS = "hello world\nfoo bar"
private def new_sample_io
io = IO::Memory.new
Compress::Gzip::Writer.open(io) do |gzip|
header = gzip.header
header.modification_time = SAMPLE_TIME
header.os = SAMPLE_OS
header.extra = SAMPLE_EXTRA
header.name = SAMPLE_NAME
header.comment = SAMPLE_COMMENT
io.bytesize.should eq(0)
gzip.flush
io.bytesize.should_not eq(0)
gzip.print SAMPLE_CONTENTS
end
io.rewind
end
describe Compress::Gzip do
it "writes and reads to memory" do
io = new_sample_io
Compress::Gzip::Reader.open(io) do |gzip|
header = gzip.header.not_nil!
header.modification_time.should eq(SAMPLE_TIME)
header.os.should eq(SAMPLE_OS)
header.extra.should eq(SAMPLE_EXTRA)
header.name.should eq(SAMPLE_NAME)
header.comment.should eq(SAMPLE_COMMENT)
# Reading zero bytes is OK
gzip.read(Bytes.empty).should eq(0)
gzip.gets_to_end.should eq(SAMPLE_CONTENTS)
end
end
it "rewinds" do
io = new_sample_io
gzip = Compress::Gzip::Reader.new(io)
gzip.gets.should eq(SAMPLE_CONTENTS.lines.first)
gzip.rewind
gzip.gets_to_end.should eq(SAMPLE_CONTENTS)
end
end
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