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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
language_version __FILE__, "unless"
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