Move spec/rubyspec to spec/ruby for consistency

* Other ruby implementations use the spec/ruby directory.
  [Misc #13792] [ruby-core:82287]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@59979 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

spec/ruby/core/string/casecmp_spec.rb

@@ -0,0 +1,120 @@
+# -*- encoding: ascii-8bit -*-
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes.rb', __FILE__)
+
+describe "String#casecmp independent of case" do
+  it "returns -1 when less than other" do
+    "a".casecmp("b").should == -1
+    "A".casecmp("b").should == -1
+  end
+
+  it "returns 0 when equal to other" do
+    "a".casecmp("a").should == 0
+    "A".casecmp("a").should == 0
+  end
+
+  it "returns 1 when greater than other" do
+    "b".casecmp("a").should == 1
+    "B".casecmp("a").should == 1
+  end
+
+  it "tries to convert other to string using to_str" do
+    other = mock('x')
+    other.should_receive(:to_str).and_return("abc")
+
+    "abc".casecmp(other).should == 0
+  end
+
+  ruby_version_is ""..."2.5" do
+    it "raises a TypeError if other can't be converted to a string" do
+      lambda { "abc".casecmp(mock('abc')) }.should raise_error(TypeError)
+    end
+  end
+
+  ruby_version_is "2.5" do
+    it "returns nil if other can't be converted to a string" do
+      "abc".casecmp(mock('abc')).should be_nil
+    end
+  end
+
+  describe "in UTF-8 mode" do
+    describe "for non-ASCII characters" do
+      before :each do
+        @upper_a_tilde  = "\xc3\x83"
+        @lower_a_tilde  = "\xc3\xa3"
+        @upper_a_umlaut = "\xc3\x84"
+        @lower_a_umlaut = "\xc3\xa4"
+      end
+
+      it "returns -1 when numerically less than other" do
+        @upper_a_tilde.casecmp(@lower_a_tilde).should == -1
+        @upper_a_tilde.casecmp(@upper_a_umlaut).should == -1
+      end
+
+      it "returns 0 when numerically equal to other" do
+        @upper_a_tilde.casecmp(@upper_a_tilde).should == 0
+      end
+
+      it "returns 1 when numerically greater than other" do
+        @lower_a_umlaut.casecmp(@upper_a_umlaut).should == 1
+        @lower_a_umlaut.casecmp(@lower_a_tilde).should == 1
+      end
+    end
+
+    describe "for ASCII characters" do
+      it "returns -1 when less than other" do
+        "a".casecmp("b").should == -1
+        "A".casecmp("b").should == -1
+      end
+
+      it "returns 0 when equal to other" do
+        "a".casecmp("a").should == 0
+        "A".casecmp("a").should == 0
+      end
+
+      it "returns 1 when greater than other" do
+        "b".casecmp("a").should == 1
+        "B".casecmp("a").should == 1
+      end
+    end
+  end
+
+  describe "for non-ASCII characters" do
+    before :each do
+      @upper_a_tilde = "\xc3"
+      @lower_a_tilde = "\xe3"
+    end
+
+    it "returns -1 when numerically less than other" do
+      @upper_a_tilde.casecmp(@lower_a_tilde).should == -1
+    end
+
+    it "returns 0 when equal to other" do
+      @upper_a_tilde.casecmp("\xc3").should == 0
+    end
+
+    it "returns 1 when numerically greater than other" do
+      @lower_a_tilde.casecmp(@upper_a_tilde).should == 1
+    end
+  end
+
+  describe "when comparing a subclass instance" do
+    it "returns -1 when less than other" do
+      b = StringSpecs::MyString.new "b"
+      "a".casecmp(b).should == -1
+      "A".casecmp(b).should == -1
+    end
+
+    it "returns 0 when equal to other" do
+      a = StringSpecs::MyString.new "a"
+      "a".casecmp(a).should == 0
+      "A".casecmp(a).should == 0
+    end
+
+    it "returns 1 when greater than other" do
+      a = StringSpecs::MyString.new "a"
+      "b".casecmp(a).should == 1
+      "B".casecmp(a).should == 1
+    end
+  end
+end