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author | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
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committer | eregon <eregon@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2017-05-07 12:04:49 +0000 |
commit | a3736e97a6ca517c2cd7d3d93a8f2ef86e39e5b5 (patch) | |
tree | 9eef7f720314ebaff56845a74e203770e62284e4 /spec/rubyspec/core/integer/rationalize_spec.rb | |
parent | 52df1d0d3370919711c0577aaa42d1a864709885 (diff) | |
download | ruby-a3736e97a6ca517c2cd7d3d93a8f2ef86e39e5b5.tar.gz |
Add in-tree mspec and ruby/spec
* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
These files can therefore be updated like any other file in MRI.
Instructions are provided in spec/README.
[Feature #13156] [ruby-core:79246]
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'spec/rubyspec/core/integer/rationalize_spec.rb')
-rw-r--r-- | spec/rubyspec/core/integer/rationalize_spec.rb | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/spec/rubyspec/core/integer/rationalize_spec.rb b/spec/rubyspec/core/integer/rationalize_spec.rb new file mode 100644 index 0000000000..1ff4cfa454 --- /dev/null +++ b/spec/rubyspec/core/integer/rationalize_spec.rb @@ -0,0 +1,39 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Integer#rationalize" do + before :all do + @numbers = [ + 0, + 29871, + 99999999999999**99, + -72628191273, + ] + end + + it "returns a Rational object" do + @numbers.each do |number| + number.rationalize.should be_an_instance_of(Rational) + end + end + + it "uses self as the numerator" do + @numbers.each do |number| + number.rationalize.numerator.should == number + end + end + + it "uses 1 as the denominator" do + @numbers.each do |number| + number.rationalize.denominator.should == 1 + end + end + + it "ignores a single argument" do + 1.rationalize(0.1).should == Rational(1,1) + end + + it "raises ArgumentError when passed more than one argument" do + lambda { 1.rationalize(0.1, 0.1) }.should raise_error(ArgumentError) + lambda { 1.rationalize(0.1, 0.1, 2) }.should raise_error(ArgumentError) + end +end |