1 files changed, 56 insertions, 2 deletions

diff --git a/spec/ruby/core/argf/each_char_spec.rb b/spec/ruby/core/argf/each_char_spec.rb
index 724e5e6e3e..62d19b6574 100644
--- a/spec/ruby/core/argf/each_char_spec.rb
+++ b/spec/ruby/core/argf/each_char_spec.rb
@@ -1,6 +1,60 @@
 require_relative '../../spec_helper'
-require_relative 'shared/each_char'
 
 describe "ARGF.each_char" do
-  it_behaves_like :argf_each_char, :each_char
+  before :each do
+    @file1_name = fixture __FILE__, "file1.txt"
+    @file2_name = fixture __FILE__, "file2.txt"
+
+    @chars = []
+    File.read(@file1_name).each_char { |c| @chars << c }
+    File.read(@file2_name).each_char { |c| @chars << c }
+  end
+
+  it "yields each char of all streams to the passed block" do
+    argf [@file1_name, @file2_name] do
+      chars = []
+      @argf.each_char { |c| chars << c }
+      chars.should == @chars
+    end
+  end
+
+  it "returns self when passed a block" do
+    argf [@file1_name, @file2_name] do
+      @argf.each_char {}.should.equal?(@argf)
+    end
+  end
+
+  it "returns an Enumerator when passed no block" do
+    argf [@file1_name, @file2_name] do
+      enum = @argf.each_char
+      enum.should.instance_of?(Enumerator)
+
+      chars = []
+      enum.each { |c| chars << c }
+      chars.should == @chars
+    end
+  end
+
+  describe "when no block is given" do
+    it "returns an Enumerator" do
+      argf [@file1_name, @file2_name] do
+        enum = @argf.each_char
+        enum.should.instance_of?(Enumerator)
+
+        chars = []
+        enum.each { |c| chars << c }
+        chars.should == @chars
+      end
+    end
+
+    describe "returned Enumerator" do
+      describe "size" do
+        it "should return nil" do
+          argf [@file1_name, @file2_name] do
+            @argf.each_char.size.should == nil
+          end
+        end
+      end
+    end
+  end
 end