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require File.expand_path('../../../spec_helper', __FILE__)
describe "Bignum#to_s when given a base" do
it "returns self converted to a String using the given base" do
a = 2**64
a.to_s(2).should == "10000000000000000000000000000000000000000000000000000000000000000"
a.to_s(8).should == "2000000000000000000000"
a.to_s(16).should == "10000000000000000"
a.to_s(32).should == "g000000000000"
end
it "raises an ArgumentError if the base is less than 2 or higher than 36" do
lambda { 123.to_s(-1) }.should raise_error(ArgumentError)
lambda { 123.to_s(0) }.should raise_error(ArgumentError)
lambda { 123.to_s(1) }.should raise_error(ArgumentError)
lambda { 123.to_s(37) }.should raise_error(ArgumentError)
end
end
describe "Bignum#to_s when given no base" do
it "returns self converted to a String using base 10" do
bignum_value(9).to_s.should == "9223372036854775817"
bignum_value.to_s.should == "9223372036854775808"
(-bignum_value(675)).to_s.should == "-9223372036854776483"
end
end
with_feature :encoding do
describe "Bignum#to_s" do
before :each do
@internal = Encoding.default_internal
end
after :each do
Encoding.default_internal = @internal
end
it "returns a String in US-ASCII encoding when Encoding.default_internal is nil" do
Encoding.default_internal = nil
bignum_value.to_s.encoding.should equal(Encoding::US_ASCII)
end
it "returns a String in US-ASCII encoding when Encoding.default_internal is not nil" do
Encoding.default_internal = Encoding::IBM437
bignum_value.to_s.encoding.should equal(Encoding::US_ASCII)
end
end
end
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