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require_relative '../../spec_helper'
require "stringio"
require_relative 'shared/read'
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
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
describe "StringIO#read when passed [length]" do
before :each do
@io = StringIO.new("example")
end
it "returns nil when self's position is at the end" do
@io.pos = 7
@io.read(10).should be_nil
end
it "returns an empty String when length is 0" do
@io.read(0).should == ""
end
end
describe "StringIO#read when passed length and a buffer" do
before :each do
@io = StringIO.new("abcdefghijklmnopqrstuvwxyz")
end
it "reads [length] characters into the buffer" do
buf = "foo"
result = @io.read(10, buf)
buf.should == "abcdefghij"
result.should equal(buf)
end
end
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