2018-03-04 10:09:32 -05:00
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require_relative '../../spec_helper'
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require_relative 'fixtures/classes'
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2017-05-07 08:04:49 -04:00
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describe "IO#initialize" do
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before :each do
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@name = tmp("io_initialize.txt")
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2019-09-29 10:03:58 -04:00
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@io = IO.new(new_fd(@name))
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2017-05-07 08:04:49 -04:00
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@fd = @io.fileno
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end
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after :each do
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@io.close if @io
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rm_r @name
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end
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2020-12-20 11:16:26 -05:00
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it "reassociates the IO instance with the new descriptor when passed an Integer" do
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2019-04-28 17:20:11 -04:00
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fd = new_fd @name, "r:utf-8"
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@io.send :initialize, fd, 'r'
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@io.fileno.should == fd
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end
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it "calls #to_int to coerce the object passed as an fd" do
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obj = mock('fileno')
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fd = new_fd @name, "r:utf-8"
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obj.should_receive(:to_int).and_return(fd)
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@io.send :initialize, obj, 'r'
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@io.fileno.should == fd
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2017-05-07 08:04:49 -04:00
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end
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it "raises a TypeError when passed an IO" do
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2019-07-27 06:40:09 -04:00
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-> { @io.send :initialize, STDOUT, 'w' }.should raise_error(TypeError)
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2017-05-07 08:04:49 -04:00
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end
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it "raises a TypeError when passed nil" do
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-> { @io.send :initialize, nil, 'w' }.should raise_error(TypeError)
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2017-05-07 08:04:49 -04:00
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end
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it "raises a TypeError when passed a String" do
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2019-07-27 06:40:09 -04:00
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-> { @io.send :initialize, "4", 'w' }.should raise_error(TypeError)
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2017-05-07 08:04:49 -04:00
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end
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it "raises IOError on closed stream" do
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2019-07-27 06:40:09 -04:00
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-> { @io.send :initialize, IOSpecs.closed_io.fileno }.should raise_error(IOError)
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2017-05-07 08:04:49 -04:00
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end
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it "raises an Errno::EBADF when given an invalid file descriptor" do
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2019-07-27 06:40:09 -04:00
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-> { @io.send :initialize, -1, 'w' }.should raise_error(Errno::EBADF)
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2017-05-07 08:04:49 -04:00
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end
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end
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