1 files changed, 99 insertions, 0 deletions
diff --git a/spec/ruby/core/io/open_spec.rb b/spec/ruby/core/io/open_spec.rb
new file mode 100644
index 0000000000..ff22d14685
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+++ b/spec/ruby/core/io/open_spec.rb
@@ -0,0 +1,99 @@
+require_relative '../../spec_helper'
+require_relative 'fixtures/classes'
+require_relative 'shared/new'
+
+describe "IO.open" do
+  it_behaves_like :io_new, :open
+end
+
+describe "IO.open" do
+  it_behaves_like :io_new_errors, :open
+end
+
+# These specs use a special mock helper to avoid mock
+# methods from preventing IO#close from running and
+# which would prevent the file referenced by @fd from
+# being deleted on Windows.
+
+describe "IO.open" do
+  before :each do
+    @name = tmp("io_open.txt")
+    @fd = new_fd @name
+    ScratchPad.clear
+  end
+
+  after :each do
+    rm_r @name
+  end
+
+  it "calls #close after yielding to the block" do
+    IO.open(@fd, "w") do |io|
+      IOSpecs.io_mock(io, :close) do
+        super()
+        ScratchPad.record :called
+      end
+      io.closed?.should == false
+    end
+    ScratchPad.recorded.should == :called
+  end
+
+  it "propagate an exception in the block after calling #close" do
+    -> do
+      IO.open(@fd, "w") do |io|
+        IOSpecs.io_mock(io, :close) do
+          super()
+          ScratchPad.record :called
+        end
+        raise Exception
+      end
+    end.should.raise(Exception)
+    ScratchPad.recorded.should == :called
+  end
+
+  it "propagates an exception raised by #close that is not a StandardError" do
+    -> do
+      IO.open(@fd, "w") do |io|
+        IOSpecs.io_mock(io, :close) do
+          super()
+          ScratchPad.record :called
+          raise Exception
+        end
+      end
+    end.should.raise(Exception)
+    ScratchPad.recorded.should == :called
+  end
+
+  it "propagates an exception raised by #close that is a StandardError" do
+    -> do
+      IO.open(@fd, "w") do |io|
+        IOSpecs.io_mock(io, :close) do
+          super()
+          ScratchPad.record :called
+          raise StandardError
+        end
+      end
+    end.should.raise(StandardError)
+    ScratchPad.recorded.should == :called
+  end
+
+  it "does not propagate an IOError with 'closed stream' message raised by #close" do
+    IO.open(@fd, "w") do |io|
+      IOSpecs.io_mock(io, :close) do
+        super()
+        ScratchPad.record :called
+        raise IOError, 'closed stream'
+      end
+    end
+    ScratchPad.recorded.should == :called
+  end
+
+  it "does not set last error when an IOError with 'closed stream' raised by #close" do
+    IO.open(@fd, "w") do |io|
+      IOSpecs.io_mock(io, :close) do
+        super()
+        raise IOError, 'closed stream'
+      end
+    end
+    $!.should == nil
+  end
+end