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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe :io_copy_stream_to_file, shared: true do
it "copies the entire IO contents to the file" do
IO.copy_stream(@object.from, @to_name)
File.read(@to_name).should == @content
IO.copy_stream(@from_bigfile, @to_name)
File.read(@to_name).should == @content_bigfile
end
it "returns the number of bytes copied" do
IO.copy_stream(@object.from, @to_name).should == @size
IO.copy_stream(@from_bigfile, @to_name).should == @size_bigfile
end
it "copies only length bytes when specified" do
IO.copy_stream(@object.from, @to_name, 8).should == 8
File.read(@to_name).should == "Line one"
end
it "calls #to_path to convert on object to a file name" do
obj = mock("io_copy_stream_to")
obj.should_receive(:to_path).and_return(@to_name)
IO.copy_stream(@object.from, obj)
File.read(@to_name).should == @content
end
it "raises a TypeError if #to_path does not return a String" do
obj = mock("io_copy_stream_to")
obj.should_receive(:to_path).and_return(1)
lambda { IO.copy_stream(@object.from, obj) }.should raise_error(TypeError)
end
end
describe :io_copy_stream_to_file_with_offset, shared: true do
platform_is_not :windows do
it "copies only length bytes from the offset" do
IO.copy_stream(@object.from, @to_name, 8, 4).should == 8
File.read(@to_name).should == " one\n\nLi"
end
end
end
describe :io_copy_stream_to_io, shared: true do
it "copies the entire IO contents to the IO" do
IO.copy_stream(@object.from, @to_io)
File.read(@to_name).should == @content
IO.copy_stream(@from_bigfile, @to_io)
File.read(@to_name).should == (@content + @content_bigfile)
end
it "returns the number of bytes copied" do
IO.copy_stream(@object.from, @to_io).should == @size
IO.copy_stream(@from_bigfile, @to_io).should == @size_bigfile
end
it "starts writing at the destination IO's current position" do
@to_io.write("prelude ")
IO.copy_stream(@object.from, @to_io)
File.read(@to_name).should == ("prelude " + @content)
end
it "leaves the destination IO position at the last write" do
IO.copy_stream(@object.from, @to_io)
@to_io.pos.should == @size
end
it "raises an IOError if the destination IO is not open for writing" do
@to_io.close
@to_io = new_io @to_name, "r"
lambda { IO.copy_stream @object.from, @to_io }.should raise_error(IOError)
end
it "does not close the destination IO" do
IO.copy_stream(@object.from, @to_io)
@to_io.closed?.should be_false
end
it "copies only length bytes when specified" do
IO.copy_stream(@object.from, @to_io, 8).should == 8
File.read(@to_name).should == "Line one"
end
end
describe :io_copy_stream_to_io_with_offset, shared: true do
platform_is_not :windows do
it "copies only length bytes from the offset" do
IO.copy_stream(@object.from, @to_io, 8, 4).should == 8
File.read(@to_name).should == " one\n\nLi"
end
end
end
describe "IO.copy_stream" do
before :each do
@from_name = fixture __FILE__, "copy_stream.txt"
@to_name = tmp("io_copy_stream_io_name")
@content = IO.read(@from_name)
@size = @content.size
@from_bigfile = tmp("io_copy_stream_bigfile")
@content_bigfile = "A" * 17_000
touch(@from_bigfile){|f| f.print @content_bigfile }
@size_bigfile = @content_bigfile.size
end
after :each do
rm_r @to_name, @from_bigfile
end
describe "from an IO" do
before :each do
@from_io = new_io @from_name, "rb"
IOSpecs::CopyStream.from = @from_io
end
after :each do
@from_io.close
end
it "raises an IOError if the source IO is not open for reading" do
@from_io.close
@from_io = new_io @from_bigfile, "a"
lambda { IO.copy_stream @from_io, @to_name }.should raise_error(IOError)
end
it "does not close the source IO" do
IO.copy_stream(@from_io, @to_name)
@from_io.closed?.should be_false
end
platform_is_not :windows do
it "does not change the IO offset when an offset is specified" do
@from_io.pos = 10
IO.copy_stream(@from_io, @to_name, 8, 4)
@from_io.pos.should == 10
end
end
it "does change the IO offset when an offset is not specified" do
@from_io.pos = 10
IO.copy_stream(@from_io, @to_name)
@from_io.pos.should == 42
end
describe "to a file name" do
it_behaves_like :io_copy_stream_to_file, nil, IOSpecs::CopyStream
it_behaves_like :io_copy_stream_to_file_with_offset, nil, IOSpecs::CopyStream
end
describe "to an IO" do
before :each do
@to_io = new_io @to_name, "wb"
end
after :each do
@to_io.close
end
it_behaves_like :io_copy_stream_to_io, nil, IOSpecs::CopyStream
it_behaves_like :io_copy_stream_to_io_with_offset, nil, IOSpecs::CopyStream
end
end
describe "from a file name" do
before :each do
IOSpecs::CopyStream.from = @from_name
end
it "calls #to_path to convert on object to a file name" do
obj = mock("io_copy_stream_from")
obj.should_receive(:to_path).and_return(@from_name)
IO.copy_stream(obj, @to_name)
File.read(@to_name).should == @content
end
it "raises a TypeError if #to_path does not return a String" do
obj = mock("io_copy_stream_from")
obj.should_receive(:to_path).and_return(1)
lambda { IO.copy_stream(obj, @to_name) }.should raise_error(TypeError)
end
describe "to a file name" do
it_behaves_like :io_copy_stream_to_file, nil, IOSpecs::CopyStream
it_behaves_like :io_copy_stream_to_file_with_offset, nil, IOSpecs::CopyStream
end
describe "to an IO" do
before :each do
@to_io = new_io @to_name, "wb"
end
after :each do
@to_io.close
end
it_behaves_like :io_copy_stream_to_io, nil, IOSpecs::CopyStream
it_behaves_like :io_copy_stream_to_io_with_offset, nil, IOSpecs::CopyStream
end
end
describe "from a pipe IO" do
before :each do
@from_io = IOSpecs.pipe_fixture(@content)
IOSpecs::CopyStream.from = @from_io
end
after :each do
@from_io.close
end
it "does not close the source IO" do
IO.copy_stream(@from_io, @to_name)
@from_io.closed?.should be_false
end
platform_is_not :windows do
it "raises an error when an offset is specified" do
lambda { IO.copy_stream(@from_io, @to_name, 8, 4) }.should raise_error(Errno::ESPIPE)
end
end
describe "to a file name" do
it_behaves_like :io_copy_stream_to_file, nil, IOSpecs::CopyStream
end
describe "to an IO" do
before :each do
@to_io = new_io @to_name, "wb"
end
after :each do
@to_io.close
end
it_behaves_like :io_copy_stream_to_io, nil, IOSpecs::CopyStream
end
end
describe "with non-IO Objects" do
before do
@io = new_io @from_name, "rb"
end
after do
@io.close unless @io.closed?
end
it "calls #readpartial on the source Object if defined" do
from = IOSpecs::CopyStreamReadPartial.new @io
IO.copy_stream(from, @to_name)
File.read(@to_name).should == @content
end
it "calls #read on the source Object" do
from = IOSpecs::CopyStreamRead.new @io
IO.copy_stream(from, @to_name)
File.read(@to_name).should == @content
end
it "calls #write on the destination Object" do
to = mock("io_copy_stream_to_object")
to.should_receive(:write).with(@content).and_return(@content.size)
IO.copy_stream(@from_name, to)
end
it "does not call #pos on the source if no offset is given" do
@io.should_not_receive(:pos)
IO.copy_stream(@io, @to_name)
end
end
end
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