1 files changed, 135 insertions, 0 deletions
diff --git a/spec/ruby/core/io/shared/each.rb b/spec/ruby/core/io/shared/each.rb
new file mode 100644
index 0000000000..dc07434ecd
--- /dev/null
+++ b/spec/ruby/core/io/shared/each.rb
@@ -0,0 +1,135 @@
+# -*- encoding: utf-8 -*-
+require File.expand_path('../../fixtures/classes', __FILE__)
+
+describe :io_each, shared: true do
+  before :each do
+    @io = IOSpecs.io_fixture "lines.txt"
+    ScratchPad.record []
+  end
+
+  after :each do
+    @io.close if @io
+  end
+
+  describe "with no separator" do
+    it "yields each line to the passed block" do
+      @io.send(@method) { |s| ScratchPad << s }
+      ScratchPad.recorded.should == IOSpecs.lines
+    end
+
+    it "yields each line starting from the current position" do
+      @io.pos = 41
+      @io.send(@method) { |s| ScratchPad << s }
+      ScratchPad.recorded.should == IOSpecs.lines[2..-1]
+    end
+
+    it "returns self" do
+      @io.send(@method) { |l| l }.should equal(@io)
+    end
+
+    it "does not change $_" do
+      $_ = "test"
+      @io.send(@method) { |s| s }
+      $_.should == "test"
+    end
+
+    it "returns self" do
+      @io.send(@method) { |l| l }.should equal(@io)
+    end
+
+    it "raises an IOError when self is not readable" do
+      lambda { IOSpecs.closed_io.send(@method) {} }.should raise_error(IOError)
+    end
+
+    it "makes line count accessible via lineno" do
+      @io.send(@method) { ScratchPad << @io.lineno }
+      ScratchPad.recorded.should == [ 1,2,3,4,5,6,7,8,9 ]
+    end
+
+    it "makes line count accessible via $." do
+      @io.send(@method) { ScratchPad << $. }
+      ScratchPad.recorded.should == [ 1,2,3,4,5,6,7,8,9 ]
+    end
+
+    describe "when no block is given" do
+      it "returns an Enumerator" do
+        enum = @io.send(@method)
+        enum.should be_an_instance_of(Enumerator)
+
+        enum.each { |l| ScratchPad << l }
+        ScratchPad.recorded.should == IOSpecs.lines
+      end
+
+      describe "returned Enumerator" do
+        describe "size" do
+          it "should return nil" do
+            @io.send(@method).size.should == nil
+          end
+        end
+      end
+    end
+  end
+
+  describe "with limit" do
+    describe "when limit is 0" do
+      it "raises an ArgumentError" do
+        # must pass block so Enumerator is evaluated and raises
+        lambda { @io.send(@method, 0){} }.should raise_error(ArgumentError)
+      end
+    end
+  end
+
+  describe "when passed a String containing one space as a separator" do
+    it "uses the passed argument as the line separator" do
+      @io.send(@method, " ") { |s| ScratchPad << s }
+      ScratchPad.recorded.should == IOSpecs.lines_space_separator
+    end
+
+    it "does not change $_" do
+      $_ = "test"
+      @io.send(@method, " ") { |s| }
+      $_.should == "test"
+    end
+
+    it "tries to convert the passed separator to a String using #to_str" do
+      obj = mock("to_str")
+      obj.stub!(:to_str).and_return(" ")
+
+      @io.send(@method, obj) { |l| ScratchPad << l }
+      ScratchPad.recorded.should == IOSpecs.lines_space_separator
+    end
+  end
+
+  describe "when passed nil as a separator" do
+    it "yields self's content starting from the current position when the passed separator is nil" do
+      @io.pos = 100
+      @io.send(@method, nil) { |s| ScratchPad << s }
+      ScratchPad.recorded.should == ["qui a linha cinco.\nHere is line six.\n"]
+    end
+  end
+
+  describe "when passed an empty String as a separator" do
+    it "yields each paragraph" do
+      @io.send(@method, "") { |s| ScratchPad << s }
+      ScratchPad.recorded.should == IOSpecs.paragraphs
+    end
+  end
+end
+
+describe :io_each_default_separator, shared: true do
+  before :each do
+    @io = IOSpecs.io_fixture "lines.txt"
+    ScratchPad.record []
+    @sep, $/ = $/, " "
+  end
+
+  after :each do
+    @io.close if @io
+    $/ = @sep
+  end
+
+  it "uses $/ as the default line separator" do
+    @io.send(@method) { |s| ScratchPad << s }
+    ScratchPad.recorded.should == IOSpecs.lines_space_separator
+  end
+end