1 files changed, 97 insertions, 0 deletions
diff --git a/spec/ruby/library/erb/run_spec.rb b/spec/ruby/library/erb/run_spec.rb
new file mode 100644
index 0000000000..6ad3808a16
--- /dev/null
+++ b/spec/ruby/library/erb/run_spec.rb
@@ -0,0 +1,97 @@
+require 'erb'
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "ERB#run" do
+  # TODO: what is this? why does it not use
+  # lambda { ... }.should output
+  def _steal_stdout
+    orig = $stdout
+    s = ''
+    def s.write(arg); self << arg.to_s; end
+    $stdout = s
+    begin
+      yield
+    ensure
+      $stdout = orig
+    end
+    return s
+  end
+
+  it "print the result of compiled ruby code" do
+    input = <<END
+<ul>
+<% for item in list %>
+  <li><%= item %>
+<% end %>
+</ul>
+END
+    expected = <<END
+<ul>
+
+  <li>AAA
+
+  <li>BBB
+
+  <li>CCC
+
+</ul>
+END
+    erb = ERB.new(input)
+    list = %w[AAA BBB CCC]
+    actual = _steal_stdout { erb.run(binding) }
+    actual.should == expected
+  end
+
+  it "share local variables" do
+    input = "<% var = 456 %>"
+    expected = 456
+    var = 123
+    _steal_stdout { ERB.new(input).run(binding) }
+    var.should == expected
+  end
+
+  it "is not able to h() or u() unless including ERB::Util" do
+    input = "<%=h '<>' %>"
+    lambda {
+      _steal_stdout { ERB.new(input).run() }
+    }.should raise_error(NameError)
+  end
+
+  it "is able to h() or u() if ERB::Util is included" do
+    myerb1 = Class.new do
+      include ERB::Util
+      def main
+        input = "<%=h '<>' %>"
+        ERB.new(input).run(binding)
+      end
+    end
+    expected = '&lt;&gt;'
+    actual = _steal_stdout { myerb1.new.main() }
+    actual.should == expected
+  end
+
+  it "use TOPLEVEL_BINDING if binding is not passed" do
+    myerb2 = Class.new do
+      include ERB::Util
+      def main1
+        #input = "<%= binding.to_s %>"
+        input = "<%= _xxx_var_ %>"
+        return ERB.new(input).run()
+      end
+      def main2
+        input = "<%=h '<>' %>"
+        return ERB.new(input).run()
+      end
+    end
+
+    eval '_xxx_var_ = 123', TOPLEVEL_BINDING
+    expected = '123'
+    actual = _steal_stdout { myerb2.new.main1() }
+    actual.should == expected
+
+    lambda {
+      _steal_stdout { myerb2.new.main2() }
+    }.should raise_error(NameError)
+  end
+end
+