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describe :string_unpack_basic, shared: true do
it "ignores whitespace in the format string" do
"abc".unpack("a \t\n\v\f\r"+unpack_format).should be_an_instance_of(Array)
end
it "calls #to_str to coerce the directives string" do
d = mock("unpack directive")
d.should_receive(:to_str).and_return("a"+unpack_format)
"abc".unpack(d).should be_an_instance_of(Array)
end
ruby_version_is ""..."3.3" do
it "warns about using an unknown directive" do
-> { "abcdefgh".unpack("a R" + unpack_format) }.should complain(/unknown unpack directive 'R' in 'a R#{unpack_format}'/)
-> { "abcdefgh".unpack("a 0" + unpack_format) }.should complain(/unknown unpack directive '0' in 'a 0#{unpack_format}'/)
-> { "abcdefgh".unpack("a :" + unpack_format) }.should complain(/unknown unpack directive ':' in 'a :#{unpack_format}'/)
end
end
ruby_version_is "3.3" do
it "raises ArgumentError when a directive is unknown" do
-> { "abcdefgh".unpack("a K" + unpack_format) }.should raise_error(ArgumentError, "unknown unpack directive 'K' in 'a K#{unpack_format}'")
-> { "abcdefgh".unpack("a 0" + unpack_format) }.should raise_error(ArgumentError, "unknown unpack directive '0' in 'a 0#{unpack_format}'")
-> { "abcdefgh".unpack("a :" + unpack_format) }.should raise_error(ArgumentError, "unknown unpack directive ':' in 'a :#{unpack_format}'")
end
end
end
describe :string_unpack_no_platform, shared: true do
it "raises an ArgumentError when the format modifier is '_'" do
-> { "abcdefgh".unpack(unpack_format("_")) }.should raise_error(ArgumentError)
end
it "raises an ArgumentError when the format modifier is '!'" do
-> { "abcdefgh".unpack(unpack_format("!")) }.should raise_error(ArgumentError)
end
end
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