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# -*- encoding: ascii-8bit -*-
require File.expand_path('../../../../spec_helper', __FILE__)
require File.expand_path('../../fixtures/classes', __FILE__)
require File.expand_path('../shared/basic', __FILE__)
require File.expand_path('../shared/numeric_basic', __FILE__)
describe "Array#pack with format 'w'" do
it_behaves_like :array_pack_basic, 'w'
it_behaves_like :array_pack_basic_non_float, 'w'
it_behaves_like :array_pack_arguments, 'w'
it_behaves_like :array_pack_numeric_basic, 'w'
it "encodes a BER-compressed integer" do
[ [[0], "\x00"],
[[1], "\x01"],
[[9999], "\xce\x0f"],
[[2**65], "\x84\x80\x80\x80\x80\x80\x80\x80\x80\x00"]
].should be_computed_by(:pack, "w")
end
it "calls #to_int to convert the pack argument to an Integer" do
obj = mock('to_int')
obj.should_receive(:to_int).and_return(5)
[obj].pack("w").should == "\x05"
end
it "ignores NULL bytes between directives" do
[1, 2, 3].pack("w\x00w").should == "\x01\x02"
end
it "ignores spaces between directives" do
[1, 2, 3].pack("w w").should == "\x01\x02"
end
it "raises an ArgumentError when passed a negative value" do
lambda { [-1].pack("w") }.should raise_error(ArgumentError)
end
it "returns an ASCII-8BIT string" do
[1].pack('w').encoding.should == Encoding::ASCII_8BIT
end
end
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