1 files changed, 61 insertions, 0 deletions
diff --git a/spec/rubyspec/core/string/each_byte_spec.rb b/spec/rubyspec/core/string/each_byte_spec.rb
new file mode 100644
index 0000000000..2282cd6d7a
--- /dev/null
+++ b/spec/rubyspec/core/string/each_byte_spec.rb
@@ -0,0 +1,61 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes.rb', __FILE__)
+
+describe "String#each_byte" do
+  it "passes each byte in self to the given block" do
+    a = []
+    "hello\x00".each_byte { |c| a << c }
+    a.should == [104, 101, 108, 108, 111, 0]
+  end
+
+  it "keeps iterating from the old position (to new string end) when self changes" do
+    r = ""
+    s = "hello world"
+    s.each_byte do |c|
+      r << c
+      s.insert(0, "<>") if r.size < 3
+    end
+    r.should == "h><>hello world"
+
+    r = ""
+    s = "hello world"
+    s.each_byte { |c| s.slice!(-1); r << c }
+    r.should == "hello "
+
+    r = ""
+    s = "hello world"
+    s.each_byte { |c| s.slice!(0); r << c }
+    r.should == "hlowrd"
+
+    r = ""
+    s = "hello world"
+    s.each_byte { |c| s.slice!(0..-1); r << c }
+    r.should == "h"
+  end
+
+  it "returns self" do
+    s = "hello"
+    (s.each_byte {}).should equal(s)
+  end
+
+  describe "when no block is given" do
+    it "returns an enumerator" do
+      enum = "hello".each_byte
+      enum.should be_an_instance_of(Enumerator)
+      enum.to_a.should == [104, 101, 108, 108, 111]
+    end
+
+    describe "returned enumerator" do
+      describe "size" do
+        it "should return the bytesize of the string" do
+          str = "hello"
+          str.each_byte.size.should == str.bytesize
+          str = "ola"
+          str.each_byte.size.should == str.bytesize
+          str = "\303\207\342\210\202\303\251\306\222g"
+          str.each_byte.size.should == str.bytesize
+        end
+      end
+    end
+  end
+end