1 files changed, 51 insertions, 0 deletions
diff --git a/spec/rubyspec/core/symbol/comparison_spec.rb b/spec/rubyspec/core/symbol/comparison_spec.rb
new file mode 100644
index 0000000000..91edd1f0d9
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+++ b/spec/rubyspec/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