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# -*- encoding: utf-8 -*-
require File.expand_path('../../../spec_helper', __FILE__)
require "stringio"
require File.expand_path('../shared/read', __FILE__)
describe "StringIO#read when passed length, buffer" do
it_behaves_like :stringio_read, :read
end
describe "StringIO#read when passed length" do
it_behaves_like :stringio_read_length, :read
it "returns nil when passed length > 0 and no data remains" do
@io.send(@method, 8).should == "example"
@io.send(@method, 2).should be_nil
end
# This was filed as a bug in redmine#156 but since MRI refused to change the
# 1.8 behavior, it's now considered a version difference by RubySpec since
# it could have a significant impact on user code.
ruby_version_is ""..."1.9" do
it "returns nil when passed 0 and no data remains" do
@io.send(@method, 8).should == "example"
@io.send(@method, 0).should be_nil
end
end
ruby_version_is "1.9" do
it "returns an empty String when passed 0 and no data remains" do
@io.send(@method, 8).should == "example"
@io.send(@method, 0).should == ""
end
it "truncates the buffer when limit > 0 and no data remains" do
@io.send(@method)
@io.send(@method, 2, buffer = "abc").should be_nil
buffer.should == ""
end
end
end
describe "StringIO#read when passed no arguments" do
it_behaves_like :stringio_read_no_arguments, :read
it "returns an empty string if at EOF" do
@io.read.should == "example"
@io.read.should == ""
end
end
describe "StringIO#read when passed nil" do
it_behaves_like :stringio_read_nil, :read
it "returns an empty string if at EOF" do
@io.read(nil).should == "example"
@io.read(nil).should == ""
end
end
describe "StringIO#read when self is not readable" do
it_behaves_like :stringio_read_not_readable, :read
end
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