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47 lines
1.2 KiB
Ruby
47 lines
1.2 KiB
Ruby
require_relative '../../../spec_helper'
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require 'stringio'
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require 'zlib'
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describe "Zlib::GzipReader#rewind" do
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before :each do
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@data = '12345abcde'
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@zip = [31, 139, 8, 0, 44, 220, 209, 71, 0, 3, 51, 52, 50, 54, 49, 77,
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76, 74, 78, 73, 5, 0, 157, 5, 0, 36, 10, 0, 0, 0].pack('C*')
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@io = StringIO.new @zip
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ScratchPad.clear
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end
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it "resets the position of the stream pointer" do
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gz = Zlib::GzipReader.new @io
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gz.read
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gz.pos.should == @data.length
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gz.rewind
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gz.pos.should == 0
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gz.lineno.should == 0
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end
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it "resets the position of the stream pointer to data previously read" do
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gz = Zlib::GzipReader.new @io
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first_read = gz.read
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gz.rewind
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first_read.should == gz.read
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end
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it "invokes seek method on the associated IO object" do
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# first, prepare the mock object:
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(obj = mock("io")).should_receive(:get_io).any_number_of_times.and_return(@io)
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def obj.read(args); get_io.read(args); end
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def obj.seek(pos, whence = 0)
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ScratchPad.record :seek
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get_io.seek(pos, whence)
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end
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gz = Zlib::GzipReader.new(obj)
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gz.rewind()
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ScratchPad.recorded.should == :seek
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gz.pos.should == 0
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gz.read.should == "12345abcde"
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end
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end
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