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ruby--ruby/spec/rubyspec/language/unless_spec.rb
eregon 95e8c48dd3 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
2017-05-07 12:04:49 +00:00

43 lines
891 B
Ruby

require File.expand_path('../../spec_helper', __FILE__)
describe "The unless expression" do
it "evaluates the unless body when the expression is false" do
unless false
a = true
else
a = false
end
a.should == true
end
it "returns the last statement in the body" do
unless false
'foo'
'bar'
'baz'
end.should == 'baz'
end
it "evaluates the else body when the expression is true" do
unless true
'foo'
else
'bar'
end.should == 'bar'
end
it "takes an optional then after the expression" do
unless false then
'baz'
end.should == 'baz'
end
it "does not return a value when the expression is true" do
unless true; end.should == nil
end
it "allows expression and body to be on one line (using 'then')" do
unless false then 'foo'; else 'bar'; end.should == 'foo'
end
end