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# -*- encoding: utf-8 -*-
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
require File.expand_path('../shared/write', __FILE__)
require File.expand_path('../shared/binwrite', __FILE__)
describe "IO#write on a file" do
before :each do
@filename = tmp("IO_syswrite_file") + $$.to_s
File.open(@filename, "w") do |file|
file.write("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 "does not check if the file is writable if writing zero bytes" do
lambda { @readonly_file.write("") }.should_not raise_error
end
it "returns a length of 0 when writing a blank string" do
@file.write('').should == 0
end
with_feature :encoding do
before :each do
@external = Encoding.default_external
@internal = Encoding.default_internal
Encoding.default_external = Encoding::UTF_8
end
after :each do
Encoding.default_external = @external
Encoding.default_internal = @internal
end
it "returns the number of bytes written" do
@file.write("hellø").should == 6
end
it "uses the encoding from the given option for non-ascii encoding" do
File.open(@filename, "w", encoding: Encoding::UTF_32LE) do |file|
file.write("hi").should == 8
end
File.binread(@filename).should == "h\u0000\u0000\u0000i\u0000\u0000\u0000"
end
it "uses an :open_args option" do
IO.write(@filename, 'hi', open_args: ["w", nil, {encoding: Encoding::UTF_32LE}]).should == 8
end
it "raises a invalid byte sequence error if invalid bytes are being written" do
# pack "\xFEhi" to avoid utf-8 conflict
xFEhi = ([254].pack('C*') + 'hi').force_encoding('utf-8')
File.open(@filename, "w", encoding: Encoding::US_ASCII) do |file|
lambda { file.write(xFEhi) }.should raise_error(Encoding::InvalidByteSequenceError)
end
end
it "writes binary data if no encoding is given" do
File.open(@filename, "w") do |file|
file.write('Hëllö'.encode('ISO-8859-1'))
end
ë = ([235].pack('U')).encode('ISO-8859-1')
ö = ([246].pack('U')).encode('ISO-8859-1')
res = "H#{ë}ll#{ö}"
File.binread(@filename).should == res.force_encoding(Encoding::ASCII_8BIT)
end
end
end
describe "IO.write" do
it_behaves_like :io_binwrite, :write
it "uses an :open_args option" do
IO.write(@filename, 'hi', open_args: ["w", nil, {encoding: Encoding::UTF_32LE}]).should == 8
end
it "disregards other options if :open_args is given" do
IO.write(@filename, 'hi', 2, mode: "r", encoding: Encoding::UTF_32LE, open_args: ["w"]).should == 2
File.read(@filename).should == "\0\0hi"
end
it "uses the given encoding and returns the number of bytes written" do
IO.write(@filename, 'hi', mode: "w", encoding: Encoding::UTF_32LE).should == 8
end
it "writes binary data if no encoding is given" do
IO.write(@filename, 'Hëllö'.encode('ISO-8859-1'))
xEB = [235].pack('C*')
xF6 = [246].pack('C*')
File.binread(@filename).should == ("H" + xEB + "ll" + xF6).force_encoding(Encoding::ASCII_8BIT)
end
platform_is_not :windows do
describe "on a FIFO" do
before :each do
@fifo = tmp("File_open_fifo")
system "mkfifo #{@fifo}"
end
after :each do
rm_r @fifo
end
it "writes correctly" do
thr = Thread.new do
IO.read(@fifo)
end
begin
string = "hi"
IO.write(@fifo, string).should == string.length
ensure
thr.join
end
end
end
end
end
describe "IO#write" do
it_behaves_like :io_write, :write
end
platform_is :windows do
describe "IO#write on Windows" do
before :each do
@fname = tmp("io_write.txt")
end
after :each do
rm_r @fname
@io.close if @io and !@io.closed?
end
it "normalizes line endings in text mode" do
@io = new_io(@fname, "wt")
@io.write "a\nb\nc"
@io.close
File.binread(@fname).should == "a\r\nb\r\nc"
end
it "does not normalize line endings in binary mode" do
@io = new_io(@fname, "wb")
@io.write "a\r\nb\r\nc"
@io.close
File.binread(@fname).should == "a\r\nb\r\nc"
end
end
end
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