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Diffstat (limited to 'spec/ruby/core/symbol/comparison_spec.rb')
-rw-r--r-- | spec/ruby/core/symbol/comparison_spec.rb | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/spec/ruby/core/symbol/comparison_spec.rb b/spec/ruby/core/symbol/comparison_spec.rb new file mode 100644 index 0000000000..91edd1f0d9 --- /dev/null +++ b/spec/ruby/core/symbol/comparison_spec.rb @@ -0,0 +1,51 @@ +require File.expand_path('../../../spec_helper', __FILE__) + +describe "Symbol#<=> with Symbol" do + it "compares individual characters based on their ascii value" do + ascii_order = Array.new(256) { |x| x.chr.to_sym } + sort_order = ascii_order.sort + sort_order.should == ascii_order + end + + it "returns -1 when self is less than other" do + (:this <=> :those).should == -1 + end + + it "returns 0 when self is equal to other" do + (:yep <=> :yep).should == 0 + end + + it "returns 1 when self is greater than other" do + (:yoddle <=> :griddle).should == 1 + end + + it "considers symbol that comes lexicographically first to be less if the symbols have same size" do + (:aba <=> :abc).should == -1 + (:abc <=> :aba).should == 1 + end + + it "doesn't consider shorter string to be less if longer string starts with shorter one" do + (:abc <=> :abcd).should == -1 + (:abcd <=> :abc).should == 1 + end + + it "compares shorter string with corresponding number of first chars of longer string" do + (:abx <=> :abcd).should == 1 + (:abcd <=> :abx).should == -1 + end +end + +describe "Symbol#<=>" do + it "returns nil if other is a String" do + (:abc <=> "abc").should be_nil + end + + it "returns nil if other is a Fixnum" do + (:abc <=> 1).should be_nil + end + + it "returns nil if other is an object" do + obj = mock("string <=>") + (:abc <=> obj).should be_nil + end +end |