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# -*- encoding: utf-8 -*-
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
ruby_version_is '1.9.3' do
describe "IO#advise" do
before :each do
@kcode, $KCODE = $KCODE, "utf-8"
@io = IOSpecs.io_fixture "lines.txt"
end
after :each do
@io.close unless @io.closed?
$KCODE = @kcode
end
it "raises a TypeError if advise is not a Symbol" do
lambda {
@io.advise("normal")
}.should raise_error(TypeError)
end
it "raises a TypeError if offsert cannot be coerced to an Integer" do
lambda {
@io.advise(:normal, "wat")
}.should raise_error(TypeError)
end
it "raises a TypeError if len cannot be coerced to an Integer" do
lambda {
@io.advise(:normal, 0, "wat")
}.should raise_error(TypeError)
end
it "raises a RangeError if offset is too big" do
lambda {
@io.advise(:normal, 10 ** 32)
}.should raise_error(RangeError)
end
it "raises a RangeError if len is too big" do
lambda {
@io.advise(:normal, 0, 10 ** 32)
}.should raise_error(RangeError)
end
it "raises a NotImplementedError if advise is not recognized" do
lambda{
@io.advise(:foo)
}.should raise_error(NotImplementedError)
end
it "supports the normal advice type" do
@io.advise(:normal).should be_nil
end
it "supports the sequential advice type" do
@io.advise(:sequential).should be_nil
end
it "supports the random advice type" do
@io.advise(:random).should be_nil
end
it "supports the dontneed advice type" do
@io.advise(:dontneed).should be_nil
end
it "supports the noreuse advice type" do
@io.advise(:noreuse).should be_nil
end
it "supports the willneed advice type" do
@io.advise(:willneed).should be_nil
end
it "raises an IOError if the stream is closed" do
@io.close
lambda { @io.advise(:normal) }.should raise_error(IOError)
end
end
end
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