require 'erb' require File.expand_path('../../../spec_helper', __FILE__) describe "ERB#def_method" do it "define module's instance method to render eRuby file" do input = <<'END' arg1=<%= arg1.inspect %> arg2=<%= arg2.inspect %> END expected = <<'END' arg1="foo" arg2=123 END # filename = 'example.rhtml' # 'arg1' and 'arg2' are used in example.rhtml #erb = ERB.new(File.read(filename)) erb = ERB.new(input) class MyClass0ForErb end erb.def_method(MyClass0ForErb, 'render(arg1, arg2)', filename) MyClass0ForErb.method_defined?(:render) MyClass0ForErb.new.render('foo', 123).should == expected end end