1 files changed, 42 insertions, 0 deletions
diff --git a/spec/ruby/optional/capi/encoding_spec.rb b/spec/ruby/optional/capi/encoding_spec.rb
index f550390c22..8e59ee8b1b 100644
--- a/spec/ruby/optional/capi/encoding_spec.rb
+++ b/spec/ruby/optional/capi/encoding_spec.rb
@@ -82,12 +82,54 @@ describe "C-API Encoding function" do
     end
   end
 
+  describe "rb_enc_isalnum" do
+    it "returns non-zero for alpha-numeric characters" do
+      @s.rb_enc_isalnum("a".ord, Encoding::US_ASCII).should == true
+      @s.rb_enc_isalnum("2".ord, Encoding::US_ASCII).should == true
+      @s.rb_enc_isalnum("a".ord, Encoding::UTF_8).should == true
+      @s.rb_enc_isalnum("2".ord, Encoding::UTF_8).should == true
+      @s.rb_enc_isalnum("é".encode(Encoding::ISO_8859_1).ord, Encoding::ISO_8859_1).should == true
+    end
+
+    it "returns zero for non alpha-numeric characters" do
+      @s.rb_enc_isalnum("-".ord, Encoding::US_ASCII).should == false
+      @s.rb_enc_isalnum(" ".ord, Encoding::US_ASCII).should == false
+      @s.rb_enc_isalnum("-".ord, Encoding::UTF_8).should == false
+      @s.rb_enc_isalnum(" ".ord, Encoding::UTF_8).should == false
+    end
+  end
+
+  describe "rb_enc_isspace" do
+    it "returns non-zero for space characters" do
+      @s.rb_enc_isspace(" ".ord, Encoding::US_ASCII).should == true
+      @s.rb_enc_isspace(" ".ord, Encoding::UTF_8).should == true
+    end
+
+    it "returns zero for non space characters" do
+      @s.rb_enc_isspace("-".ord, Encoding::US_ASCII).should == false
+      @s.rb_enc_isspace("A".ord, Encoding::US_ASCII).should == false
+      @s.rb_enc_isspace("3".ord, Encoding::US_ASCII).should == false
+      @s.rb_enc_isspace("-".ord, Encoding::UTF_8).should == false
+      @s.rb_enc_isspace("A".ord, Encoding::UTF_8).should == false
+      @s.rb_enc_isspace("3".ord, Encoding::UTF_8).should == false
+    end
+  end
+
   describe "rb_enc_from_index" do
     it "returns an Encoding" do
       @s.rb_enc_from_index(0).should be_an_instance_of(String)
     end
   end
 
+  describe "rb_enc_mbc_to_codepoint" do
+    it "returns the correct codepoint for the given character and size" do
+       @s.rb_enc_mbc_to_codepoint("é", 2).should == 0x00E9
+       @s.rb_enc_mbc_to_codepoint("éa", 2).should == 0x00E9
+       @s.rb_enc_mbc_to_codepoint("éa", 1).should == 0xC3
+       @s.rb_enc_mbc_to_codepoint("éa", 3).should == 0x00E9
+    end
+  end
+
   describe "rb_usascii_encoding" do
     it "returns the encoding for Encoding::US_ASCII" do
       @s.rb_usascii_encoding.should == "US-ASCII"