# 
# describe "The 'case'-construct" do
#   it "evaluates the body of the when clause matching the case target expression" do
#     case 1
#       when 2; false
#       when 1; true
#     end.should == true
#   end
#   
#   it "evaluates the body of the when clause whose array expression includes the case target expression" do
#     case 2
#     when 3, 4; false
#     when 1, 2; true
#     end.should == true
#   end
#   
#   it "evaluates the body of the when clause in left-to-right order if it's an array expression" do
#     @calls = []
#     def foo; @calls << :foo; end
#     def bar; @calls << :bar; end
#     
#     case true
#     when foo, bar;
#     end
#     
#     @calls.should == [:foo, :bar]
#   end
#   
#   it "evaluates the body of the when clause whose range expression includes the case target expression" do
#     case 5
#     when 21..30; false
#     when 1..20; true
#     end.should == true
#   end
#   
#   it "returns nil when no 'then'-bodies are given" do
#     case "a"
#     when "a"
#     when "b"
#     end.should == nil
#   end
#   
#   it "evaluates the 'else'-body when no other expression matches" do
#     case "c"
#     when "a"; 'foo'
#     when "b"; 'bar'
#     else 'zzz'
#     end.should == 'zzz'
#   end
#   
#   it "returns nil when no expression matches and 'else'-body is empty" do
#     case "c"
#     when "a"; "a"
#     when "b"; "b"
#     else
#     end.should == nil
#   end
#   
#   it "returns 2 when a then body is empty" do
#     case Object.new
#     when Number then
#       1
#     when String then
#       # ok
#     else
#       2
#     end.should == 2
#   end
#   
#   it "returns that statement following 'then'" do
#     case "a"
#     when "a" then 'foo'
#     when "b" then 'bar'
#     end.should == 'foo'
#   end
#   
#   it "tests classes with case equality" do
#     case "a"
#     when String
#       'foo'
#     when Symbol
#       'bar'
#     end.should == 'foo'
#   end
#   
#   it "tests with matching regexps" do
#     case "hello"
#     when /abc/; false
#     when /^hell/; true
#     end.should == true
#   end
#   
#   it "takes a list of values" do
#     case 'z'
#     when 'a', 'b', 'c', 'd'
#       "foo"
#     when 'x', 'y', 'z'
#       "bar"
#     end.should == "bar"
#   end
#   
#   it "takes an expanded array in addition to a list of values"
# end