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require_relative '../../spec_helper'
require_relative 'fixtures/classes'
describe "IO.pipe" do
after :each do
@r.close if @r && !@r.closed?
@w.close if @w && !@w.closed?
end
it "creates a two-ended pipe" do
@r, @w = IO.pipe
@w.puts "test_create_pipe\\n"
@w.close
@r.read(16).should == "test_create_pipe"
end
it "returns two IO objects" do
@r, @w = IO.pipe
@r.should be_kind_of(IO)
@w.should be_kind_of(IO)
end
it "returns instances of a subclass when called on a subclass" do
@r, @w = IOSpecs::SubIO.pipe
@r.should be_an_instance_of(IOSpecs::SubIO)
@w.should be_an_instance_of(IOSpecs::SubIO)
end
end
describe "IO.pipe" do
describe "passed a block" do
it "yields two IO objects" do
IO.pipe do |r, w|
r.should be_kind_of(IO)
w.should be_kind_of(IO)
end
end
it "returns the result of the block" do
IO.pipe { |r, w| :result }.should == :result
end
it "closes both IO objects" do
r, w = IO.pipe do |_r, _w|
[_r, _w]
end
r.should.closed?
w.should.closed?
end
it "closes both IO objects when the block raises" do
r = w = nil
-> do
IO.pipe do |_r, _w|
r = _r
w = _w
raise RuntimeError
end
end.should raise_error(RuntimeError)
r.should.closed?
w.should.closed?
end
it "allows IO objects to be closed within the block" do
r, w = IO.pipe do |_r, _w|
_r.close
_w.close
[_r, _w]
end
r.should.closed?
w.should.closed?
end
end
end
describe "IO.pipe" do
before :each do
@default_external = Encoding.default_external
@default_internal = Encoding.default_internal
end
after :each do
Encoding.default_external = @default_external
Encoding.default_internal = @default_internal
end
it "sets the external encoding of the read end to the default when passed no arguments" do
Encoding.default_external = Encoding::ISO_8859_1
IO.pipe do |r, w|
r.external_encoding.should == Encoding::ISO_8859_1
r.internal_encoding.should be_nil
end
end
it "sets the internal encoding of the read end to the default when passed no arguments" do
Encoding.default_external = Encoding::ISO_8859_1
Encoding.default_internal = Encoding::UTF_8
IO.pipe do |r, w|
r.external_encoding.should == Encoding::ISO_8859_1
r.internal_encoding.should == Encoding::UTF_8
end
end
it "sets the internal encoding to nil if the same as the external" do
Encoding.default_external = Encoding::UTF_8
Encoding.default_internal = Encoding::UTF_8
IO.pipe do |r, w|
r.external_encoding.should == Encoding::UTF_8
r.internal_encoding.should be_nil
end
end
it "sets the external encoding of the read end when passed an Encoding argument" do
IO.pipe(Encoding::UTF_8) do |r, w|
r.external_encoding.should == Encoding::UTF_8
r.internal_encoding.should be_nil
end
end
it "sets the external and internal encodings of the read end when passed two Encoding arguments" do
IO.pipe(Encoding::UTF_8, Encoding::UTF_16BE) do |r, w|
r.external_encoding.should == Encoding::UTF_8
r.internal_encoding.should == Encoding::UTF_16BE
end
end
it "sets the external encoding of the read end when passed the name of an Encoding" do
IO.pipe("UTF-8") do |r, w|
r.external_encoding.should == Encoding::UTF_8
r.internal_encoding.should be_nil
end
end
it "accepts 'bom|' prefix for external encoding" do
IO.pipe("BOM|UTF-8") do |r, w|
r.external_encoding.should == Encoding::UTF_8
r.internal_encoding.should be_nil
end
end
it "sets the external and internal encodings specified as a String and separated with a colon" do
IO.pipe("UTF-8:ISO-8859-1") do |r, w|
r.external_encoding.should == Encoding::UTF_8
r.internal_encoding.should == Encoding::ISO_8859_1
end
end
it "accepts 'bom|' prefix for external encoding when specifying 'external:internal'" do
IO.pipe("BOM|UTF-8:ISO-8859-1") do |r, w|
r.external_encoding.should == Encoding::UTF_8
r.internal_encoding.should == Encoding::ISO_8859_1
end
end
it "sets the external and internal encoding when passed two String arguments" do
IO.pipe("UTF-8", "UTF-16BE") do |r, w|
r.external_encoding.should == Encoding::UTF_8
r.internal_encoding.should == Encoding::UTF_16BE
end
end
it "accepts an options Hash with one String encoding argument" do
IO.pipe("BOM|UTF-8:ISO-8859-1", invalid: :replace) do |r, w|
r.external_encoding.should == Encoding::UTF_8
r.internal_encoding.should == Encoding::ISO_8859_1
end
end
it "accepts an options Hash with two String encoding arguments" do
IO.pipe("UTF-8", "ISO-8859-1", invalid: :replace) do |r, w|
r.external_encoding.should == Encoding::UTF_8
r.internal_encoding.should == Encoding::ISO_8859_1
end
end
it "calls #to_hash to convert an options argument" do
options = mock("io pipe encoding options")
options.should_receive(:to_hash).and_return({ invalid: :replace })
IO.pipe("UTF-8", "ISO-8859-1", **options) { |r, w| }
end
it "calls #to_str to convert the first argument to a String" do
obj = mock("io_pipe_encoding")
obj.should_receive(:to_str).and_return("UTF-8:UTF-16BE")
IO.pipe(obj) do |r, w|
r.external_encoding.should == Encoding::UTF_8
r.internal_encoding.should == Encoding::UTF_16BE
end
end
it "calls #to_str to convert the second argument to a String" do
obj = mock("io_pipe_encoding")
obj.should_receive(:to_str).at_least(1).times.and_return("UTF-16BE")
IO.pipe(Encoding::UTF_8, obj) do |r, w|
r.external_encoding.should == Encoding::UTF_8
r.internal_encoding.should == Encoding::UTF_16BE
end
end
it "sets no external encoding for the write end" do
IO.pipe(Encoding::UTF_8) do |r, w|
w.external_encoding.should be_nil
end
end
it "sets no internal encoding for the write end" do
IO.pipe(Encoding::UTF_8) do |r, w|
w.external_encoding.should be_nil
end
end
end
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