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# -*- encoding: ascii-8bit -*-
require_relative '../../../spec_helper'
require_relative '../fixtures/classes'
require_relative 'shared/basic'
require_relative 'shared/encodings'
require_relative 'shared/taint'
describe "Array#pack with format 'H'" do
it_behaves_like :array_pack_basic, 'H'
it_behaves_like :array_pack_basic_non_float, 'H'
it_behaves_like :array_pack_arguments, 'H'
it_behaves_like :array_pack_hex, 'H'
it_behaves_like :array_pack_taint, 'H'
it "calls #to_str to convert an Object to a String" do
obj = mock("pack H string")
obj.should_receive(:to_str).and_return("a")
[obj].pack("H").should == "\xa0"
end
it "encodes the first character as the most significant nibble when passed no count modifier" do
["ab"].pack("H").should == "\xa0"
end
it "implicitly has count equal to the string length when passed the '*' modifier" do
["deadbeef"].pack("H*").should == "\xde\xad\xbe\xef"
end
it "encodes count nibbles when passed a count modifier exceeding the string length" do
["ab"].pack('H8').should == "\xab\x00\x00\x00"
end
it "encodes the first character as the most significant nibble of a hex value" do
[ [["0"], "\x00"],
[["1"], "\x10"],
[["2"], "\x20"],
[["3"], "\x30"],
[["4"], "\x40"],
[["5"], "\x50"],
[["6"], "\x60"],
[["7"], "\x70"],
[["8"], "\x80"],
[["9"], "\x90"],
[["a"], "\xa0"],
[["b"], "\xb0"],
[["c"], "\xc0"],
[["d"], "\xd0"],
[["e"], "\xe0"],
[["f"], "\xf0"],
[["A"], "\xa0"],
[["B"], "\xb0"],
[["C"], "\xc0"],
[["D"], "\xd0"],
[["E"], "\xe0"],
[["F"], "\xf0"]
].should be_computed_by(:pack, "H")
end
it "encodes the second character as the least significant nibble of a hex value" do
[ [["00"], "\x00"],
[["01"], "\x01"],
[["02"], "\x02"],
[["03"], "\x03"],
[["04"], "\x04"],
[["05"], "\x05"],
[["06"], "\x06"],
[["07"], "\x07"],
[["08"], "\x08"],
[["09"], "\x09"],
[["0a"], "\x0a"],
[["0b"], "\x0b"],
[["0c"], "\x0c"],
[["0d"], "\x0d"],
[["0e"], "\x0e"],
[["0f"], "\x0f"],
[["0A"], "\x0a"],
[["0B"], "\x0b"],
[["0C"], "\x0c"],
[["0D"], "\x0d"],
[["0E"], "\x0e"],
[["0F"], "\x0f"]
].should be_computed_by(:pack, "H2")
end
it "encodes the least significant nibble of a non alphanumeric character as the most significant nibble of the hex value" do
[ [["^"], "\xe0"],
[["*"], "\xa0"],
[["#"], "\x30"],
[["["], "\xb0"],
[["]"], "\xd0"],
[["@"], "\x00"],
[["!"], "\x10"],
[["H"], "\x10"],
[["O"], "\x80"],
[["T"], "\xd0"],
[["Z"], "\x30"],
].should be_computed_by(:pack, "H")
end
it "returns an ASCII-8BIT string" do
["41"].pack("H").encoding.should == Encoding::ASCII_8BIT
end
end
describe "Array#pack with format 'h'" do
it_behaves_like :array_pack_basic, 'h'
it_behaves_like :array_pack_basic_non_float, 'h'
it_behaves_like :array_pack_arguments, 'h'
it_behaves_like :array_pack_hex, 'h'
it_behaves_like :array_pack_taint, 'h'
it "calls #to_str to convert an Object to a String" do
obj = mock("pack H string")
obj.should_receive(:to_str).and_return("a")
[obj].pack("h").should == "\x0a"
end
it "encodes the first character as the least significant nibble when passed no count modifier" do
["ab"].pack("h").should == "\x0a"
end
it "implicitly has count equal to the string length when passed the '*' modifier" do
["deadbeef"].pack("h*").should == "\xed\xda\xeb\xfe"
end
it "encodes count nibbles when passed a count modifier exceeding the string length" do
["ab"].pack('h8').should == "\xba\x00\x00\x00"
end
it "encodes the first character as the least significant nibble of a hex value" do
[ [["0"], "\x00"],
[["1"], "\x01"],
[["2"], "\x02"],
[["3"], "\x03"],
[["4"], "\x04"],
[["5"], "\x05"],
[["6"], "\x06"],
[["7"], "\x07"],
[["8"], "\x08"],
[["9"], "\x09"],
[["a"], "\x0a"],
[["b"], "\x0b"],
[["c"], "\x0c"],
[["d"], "\x0d"],
[["e"], "\x0e"],
[["f"], "\x0f"],
[["A"], "\x0a"],
[["B"], "\x0b"],
[["C"], "\x0c"],
[["D"], "\x0d"],
[["E"], "\x0e"],
[["F"], "\x0f"]
].should be_computed_by(:pack, "h")
end
it "encodes the second character as the most significant nibble of a hex value" do
[ [["00"], "\x00"],
[["01"], "\x10"],
[["02"], "\x20"],
[["03"], "\x30"],
[["04"], "\x40"],
[["05"], "\x50"],
[["06"], "\x60"],
[["07"], "\x70"],
[["08"], "\x80"],
[["09"], "\x90"],
[["0a"], "\xa0"],
[["0b"], "\xb0"],
[["0c"], "\xc0"],
[["0d"], "\xd0"],
[["0e"], "\xe0"],
[["0f"], "\xf0"],
[["0A"], "\xa0"],
[["0B"], "\xb0"],
[["0C"], "\xc0"],
[["0D"], "\xd0"],
[["0E"], "\xe0"],
[["0F"], "\xf0"]
].should be_computed_by(:pack, "h2")
end
it "encodes the least significant nibble of a non alphanumeric character as the least significant nibble of the hex value" do
[ [["^"], "\x0e"],
[["*"], "\x0a"],
[["#"], "\x03"],
[["["], "\x0b"],
[["]"], "\x0d"],
[["@"], "\x00"],
[["!"], "\x01"],
[["H"], "\x01"],
[["O"], "\x08"],
[["T"], "\x0d"],
[["Z"], "\x03"],
].should be_computed_by(:pack, "h")
end
it "returns an ASCII-8BIT string" do
["41"].pack("h").encoding.should == Encoding::ASCII_8BIT
end
end
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