1 files changed, 48 insertions, 0 deletions
diff --git a/spec/rubyspec/library/stringio/sysread_spec.rb b/spec/rubyspec/library/stringio/sysread_spec.rb
new file mode 100644
index 0000000000..cce8d8c88a
--- /dev/null
+++ b/spec/rubyspec/library/stringio/sysread_spec.rb
@@ -0,0 +1,48 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require "stringio"
+require File.expand_path('../shared/read', __FILE__)
+
+describe "StringIO#sysread when passed length, buffer" do
+  it_behaves_like :stringio_read, :sysread
+end
+
+describe "StringIO#sysread when passed [length]" do
+  it_behaves_like :stringio_read_length, :sysread
+end
+
+describe "StringIO#sysread when passed no arguments" do
+  it_behaves_like :stringio_read_no_arguments, :sysread
+
+  it "returns an empty String if at EOF" do
+    @io.sysread.should == "example"
+    @io.sysread.should == ""
+  end
+end
+
+describe "StringIO#sysread when self is not readable" do
+  it_behaves_like :stringio_read_not_readable, :sysread
+end
+
+describe "StringIO#sysread when passed nil" do
+  it_behaves_like :stringio_read_nil, :sysread
+
+  it "returns an empty String if at EOF" do
+    @io.sysread(nil).should == "example"
+    @io.sysread(nil).should == ""
+  end
+end
+
+describe "StringIO#sysread when passed [length]" do
+  before :each do
+    @io = StringIO.new("example")
+  end
+
+  it "raises an EOFError when self's position is at the end" do
+    @io.pos = 7
+    lambda { @io.sysread(10) }.should raise_error(EOFError)
+  end
+
+  it "returns an empty String when length is 0" do
+    @io.sysread(0).should == ""
+  end
+end