1 files changed, 82 insertions, 0 deletions
diff --git a/spec/rubyspec/core/string/shared/chars.rb b/spec/rubyspec/core/string/shared/chars.rb
new file mode 100644
index 0000000000..2f7280a95f
--- /dev/null
+++ b/spec/rubyspec/core/string/shared/chars.rb
@@ -0,0 +1,82 @@
+# -*- encoding: utf-8 -*-
+require File.expand_path('../../../../spec_helper', __FILE__)
+require File.expand_path('../../fixtures/classes', __FILE__)
+
+describe :string_chars, shared: true do
+  it "passes each char in self to the given block" do
+    a = []
+    "hello".send(@method) { |c| a << c }
+    a.should == ['h', 'e', 'l', 'l', 'o']
+  end
+
+  it "returns self" do
+    s = StringSpecs::MyString.new "hello"
+    s.send(@method){}.should equal(s)
+  end
+
+
+  it "is unicode aware" do
+    "\303\207\342\210\202\303\251\306\222g".send(@method).to_a.should ==
+      ["\303\207", "\342\210\202", "\303\251", "\306\222", "g"]
+  end
+
+  with_feature :encoding do
+    it "returns characters in the same encoding as self" do
+      "&%".force_encoding('Shift_JIS').send(@method).to_a.all? {|c| c.encoding.name.should == 'Shift_JIS'}
+      "&%".encode('ASCII-8BIT').send(@method).to_a.all? {|c| c.encoding.name.should == 'ASCII-8BIT'}
+    end
+
+    it "works with multibyte characters" do
+      s = "\u{8987}".force_encoding("UTF-8")
+      s.bytesize.should == 3
+      s.send(@method).to_a.should == [s]
+    end
+
+    it "works if the String's contents is invalid for its encoding" do
+      xA4 = [0xA4].pack('C')
+      xA4.force_encoding('UTF-8')
+      xA4.valid_encoding?.should be_false
+      xA4.send(@method).to_a.should == [xA4.force_encoding("UTF-8")]
+    end
+
+    it "returns a different character if the String is transcoded" do
+      s = "\u{20AC}".force_encoding('UTF-8')
+      s.encode('UTF-8').send(@method).to_a.should == ["\u{20AC}".force_encoding('UTF-8')]
+      s.encode('iso-8859-15').send(@method).to_a.should == [
+        [0xA4].pack('C').force_encoding('iso-8859-15')]
+      s.encode('iso-8859-15').encode('UTF-8').send(@method).to_a.should == [
+        "\u{20AC}".force_encoding('UTF-8')]
+    end
+
+    it "uses the String's encoding to determine what characters it contains" do
+      s = "\u{24B62}"
+
+      s.force_encoding('UTF-8').send(@method).to_a.should == [
+        s.force_encoding('UTF-8')
+      ]
+      s.force_encoding('BINARY').send(@method).to_a.should == [
+        [0xF0].pack('C').force_encoding('BINARY'),
+        [0xA4].pack('C').force_encoding('BINARY'),
+        [0xAD].pack('C').force_encoding('BINARY'),
+        [0xA2].pack('C').force_encoding('BINARY')
+      ]
+      s.force_encoding('SJIS').send(@method).to_a.should == [
+        [0xF0,0xA4].pack('CC').force_encoding('SJIS'),
+        [0xAD].pack('C').force_encoding('SJIS'),
+        [0xA2].pack('C').force_encoding('SJIS')
+      ]
+    end
+
+    it "taints resulting strings when self is tainted" do
+      str = "hello"
+
+      str.send(@method) do |x|
+        x.tainted?.should == false
+      end
+
+      str.dup.taint.send(@method) do |x|
+        x.tainted?.should == true
+      end
+    end
+  end
+end