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require_relative '../../../spec_helper'
require_relative 'shared/null_and_empty'
describe "IO::Buffer#null?" do
after :each do
@buffer&.free
@buffer = nil
end
it_behaves_like :io_buffer_null_and_empty, :null?
it "is false for a 0-length String-backed buffer created with .for" do
@buffer = IO::Buffer.for("")
@buffer.null?.should be_false
end
ruby_version_is "3.3" do
it "is false for a 0-length String-backed buffer created with .string" do
IO::Buffer.string(0) do |buffer|
buffer.null?.should be_false
end
end
end
it "is false for a 0-length slice of a buffer with size > 0" do
@buffer = IO::Buffer.new(4)
@buffer.slice(3, 0).null?.should be_false
end
end
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