diff options
Diffstat (limited to 'spec/ruby/core/bignum/to_s_spec.rb')
-rw-r--r-- | spec/ruby/core/bignum/to_s_spec.rb | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/spec/ruby/core/bignum/to_s_spec.rb b/spec/ruby/core/bignum/to_s_spec.rb new file mode 100644 index 0000000000..524639adb6 --- /dev/null +++ b/spec/ruby/core/bignum/to_s_spec.rb @@ -0,0 +1,48 @@ +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 |