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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
require File.expand_path('../shared/write', __FILE__)
describe "IO#write_nonblock on a file" do
before :each do
@filename = tmp("IO_syswrite_file") + $$.to_s
File.open(@filename, "w") do |file|
file.write_nonblock("012345678901234567890123456789")
end
@file = File.open(@filename, "r+")
@readonly_file = File.open(@filename)
end
after :each do
@file.close
@readonly_file.close
rm_r @filename
end
it "writes all of the string's bytes but does not buffer them" do
written = @file.write_nonblock("abcde")
written.should == 5
File.open(@filename) do |file|
file.sysread(10).should == "abcde56789"
file.seek(0)
@file.fsync
file.sysread(10).should == "abcde56789"
end
end
it "checks if the file is writable if writing zero bytes" do
lambda { @readonly_file.write_nonblock("") }.should raise_error
end
end
describe "IO#write_nonblock" do
it_behaves_like :io_write, :write_nonblock
end
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