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require_relative '../../../spec_helper'
describe :io_buffer_and, shared: true do
it "applies the argument buffer as an AND bit mask across the whole buffer" do
IO::Buffer.for(+"12345") do |buffer|
IO::Buffer.for(+"\xF8\x8F") do |mask|
result = buffer.send(@method, mask)
result.get_string.should == "\x30\x02\x30\x04\x30".b
result.free
end
end
end
it "ignores extra parts of mask if it is longer than source buffer" do
IO::Buffer.for(+"12345") do |buffer|
IO::Buffer.for(+"\xF8\x8F\x00\x00\x00\xFF\xFF") do |mask|
result = buffer.send(@method, mask)
result.get_string.should == "\x30\x02\x00\x00\x00".b
result.free
end
end
end
it "raises TypeError if mask is not an IO::Buffer" do
IO::Buffer.for(+"12345") do |buffer|
-> { buffer.send(@method, "\xF8\x8F") }.should.raise(TypeError, "wrong argument type String (expected IO::Buffer)")
-> { buffer.send(@method, 0xF8) }.should.raise(TypeError, "wrong argument type Integer (expected IO::Buffer)")
-> { buffer.send(@method, nil) }.should.raise(TypeError, "wrong argument type nil (expected IO::Buffer)")
end
end
end
describe "IO::Buffer#&" do
it_behaves_like :io_buffer_and, :&
it "creates a new internal buffer of the same size" do
IO::Buffer.for(+"12345") do |buffer|
IO::Buffer.for(+"\xF8\x8F") do |mask|
result = buffer & mask
result.should_not.equal? buffer
result.should.internal?
result.size.should == buffer.size
result.free
buffer.get_string.should == "12345".b
end
end
end
end
describe "IO::Buffer#and!" do
it_behaves_like :io_buffer_and, :and!
it "modifies the buffer in place" do
IO::Buffer.for(+"12345") do |buffer|
IO::Buffer.for(+"\xF8\x8F") do |mask|
result = buffer.and!(mask)
result.should.equal? buffer
result.should.external?
end
end
end
end
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