1 files changed, 62 insertions, 0 deletions
diff --git a/spec/ruby/library/stringio/read_spec.rb b/spec/ruby/library/stringio/read_spec.rb
new file mode 100644
index 0000000000..2b9c6e10b2
--- /dev/null
+++ b/spec/ruby/library/stringio/read_spec.rb
@@ -0,0 +1,62 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require "stringio"
+require File.expand_path('../shared/read', __FILE__)
+
+describe "StringIO#read when passed length, buffer" do
+  it_behaves_like :stringio_read, :read
+end
+
+describe "StringIO#read when passed [length]" do
+  it_behaves_like :stringio_read_length, :read
+end
+
+describe "StringIO#read when passed no arguments" do
+  it_behaves_like :stringio_read_no_arguments, :read
+
+  it "returns an empty string if at EOF" do
+    @io.read.should == "example"
+    @io.read.should == ""
+  end
+end
+
+describe "StringIO#read when passed nil" do
+  it_behaves_like :stringio_read_nil, :read
+
+  it "returns an empty string if at EOF" do
+    @io.read(nil).should == "example"
+    @io.read(nil).should == ""
+  end
+end
+
+describe "StringIO#read when self is not readable" do
+  it_behaves_like :stringio_read_not_readable, :read
+end
+
+describe "StringIO#read when passed [length]" do
+  before :each do
+    @io = StringIO.new("example")
+  end
+
+  it "returns nil when self's position is at the end" do
+    @io.pos = 7
+    @io.read(10).should be_nil
+  end
+
+  it "returns an empty String when length is 0" do
+    @io.read(0).should == ""
+  end
+end
+
+describe "StringIO#read when passed length and a buffer" do
+  before :each do
+    @io = StringIO.new("abcdefghijklmnopqrstuvwxyz")
+  end
+
+  it "reads [length] characters into the buffer" do
+    buf = "foo"
+    result = @io.read(10, buf)
+
+    buf.should == "abcdefghij"
+    result.should equal(buf)
+  end
+end