1 files changed, 74 insertions, 0 deletions
diff --git a/spec/ruby/core/symbol/casecmp_spec.rb b/spec/ruby/core/symbol/casecmp_spec.rb
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+++ b/spec/ruby/core/symbol/casecmp_spec.rb
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+# -*- encoding: binary -*-
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "Symbol#casecmp with Symbol" do
+  it "compares symbols without regard to case" do
+    :abcdef.casecmp(:abcde).should == 1
+    :aBcDeF.casecmp(:abcdef).should == 0
+    :abcdef.casecmp(:abcdefg).should == -1
+    :abcdef.casecmp(:ABCDEF).should == 0
+  end
+
+  it "doesn't consider non-ascii characters equal that aren't" do
+    # -- Latin-1 --
+    upper_a_tilde  = :"\xC3"
+    upper_a_umlaut = :"\xC4"
+    lower_a_tilde  = :"\xE3"
+    lower_a_umlaut = :"\xE4"
+
+    lower_a_tilde.casecmp(lower_a_umlaut).should_not == 0
+    lower_a_umlaut.casecmp(lower_a_tilde).should_not == 0
+    upper_a_tilde.casecmp(upper_a_umlaut).should_not == 0
+    upper_a_umlaut.casecmp(upper_a_tilde).should_not == 0
+
+    # -- UTF-8 --
+    upper_a_tilde  = :"\xC3\x83"
+    upper_a_umlaut = :"\xC3\x84"
+    lower_a_tilde  = :"\xC3\xA3"
+    lower_a_umlaut = :"\xC3\xA4"
+
+    lower_a_tilde.casecmp(lower_a_umlaut).should_not == 0
+    lower_a_umlaut.casecmp(lower_a_tilde).should_not == 0
+    upper_a_tilde.casecmp(upper_a_umlaut).should_not == 0
+    upper_a_umlaut.casecmp(upper_a_tilde).should_not == 0
+  end
+
+  it "doesn't do case mapping for non-ascii characters" do
+    # -- Latin-1 --
+    upper_a_tilde  = :"\xC3"
+    upper_a_umlaut = :"\xC4"
+    lower_a_tilde  = :"\xE3"
+    lower_a_umlaut = :"\xE4"
+
+    upper_a_tilde.casecmp(lower_a_tilde).should == -1
+    upper_a_umlaut.casecmp(lower_a_umlaut).should == -1
+    lower_a_tilde.casecmp(upper_a_tilde).should == 1
+    lower_a_umlaut.casecmp(upper_a_umlaut).should == 1
+
+    # -- UTF-8 --
+    upper_a_tilde  = :"\xC3\x83"
+    upper_a_umlaut = :"\xC3\x84"
+    lower_a_tilde  = :"\xC3\xA3"
+    lower_a_umlaut = :"\xC3\xA4"
+
+    upper_a_tilde.casecmp(lower_a_tilde).should == -1
+    upper_a_umlaut.casecmp(lower_a_umlaut).should == -1
+    lower_a_tilde.casecmp(upper_a_tilde).should == 1
+    lower_a_umlaut.casecmp(upper_a_umlaut).should == 1
+  end
+end
+
+describe "Symbol#casecmp" do
+  it "returns nil if other is a String" do
+    :abc.casecmp("abc").should be_nil
+  end
+
+  it "returns nil if other is a Fixnum" do
+    :abc.casecmp(1).should be_nil
+  end
+
+  it "returns nil if other is an object" do
+    obj = mock("string <=>")
+    :abc.casecmp(obj).should be_nil
+  end
+end