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require 'contest'
require 'tilt'
begin
require 'erubis'
class ErubisTemplateTest < Test::Unit::TestCase
test "registered for '.erubis' files" do
assert_equal Tilt::ErubisTemplate, Tilt['test.erubis']
assert_equal Tilt::ErubisTemplate, Tilt['test.html.erubis']
end
test "registered above ERB" do
%w[erb rhtml].each do |ext|
mappings = Tilt.mappings[ext]
erubis_idx = mappings.index(Tilt::ErubisTemplate)
erb_idx = mappings.index(Tilt::ERBTemplate)
assert erubis_idx < erb_idx,
"#{erubis_idx} should be lower than #{erb_idx}"
end
end
test "preparing and evaluating templates on #render" do
template = Tilt::ErubisTemplate.new { |t| "Hello World!" }
assert_equal "Hello World!", template.render
end
test "can be rendered more than once" do
template = Tilt::ErubisTemplate.new { |t| "Hello World!" }
3.times { assert_equal "Hello World!", template.render }
end
test "passing locals" do
template = Tilt::ErubisTemplate.new { 'Hey <%= name %>!' }
assert_equal "Hey Joe!", template.render(Object.new, :name => 'Joe')
end
test "evaluating in an object scope" do
template = Tilt::ErubisTemplate.new { 'Hey <%= @name %>!' }
scope = Object.new
scope.instance_variable_set :@name, 'Joe'
assert_equal "Hey Joe!", template.render(scope)
end
class MockOutputVariableScope
attr_accessor :exposed_buffer
end
test "exposing the buffer to the template by default" do
begin
Tilt::ErubisTemplate.default_output_variable = '@_out_buf'
template = Tilt::ErubisTemplate.new { '<% self.exposed_buffer = @_out_buf %>hey' }
scope = MockOutputVariableScope.new
template.render(scope)
assert_not_nil scope.exposed_buffer
assert_equal scope.exposed_buffer, 'hey'
ensure
Tilt::ErubisTemplate.default_output_variable = '_erbout'
end
end
test "passing a block for yield" do
template = Tilt::ErubisTemplate.new { 'Hey <%= yield %>!' }
assert_equal "Hey Joe!", template.render { 'Joe' }
end
test "backtrace file and line reporting without locals" do
data = File.read(__FILE__).split("\n__END__\n").last
fail unless data[0] == ?<
template = Tilt::ErubisTemplate.new('test.erubis', 11) { data }
begin
template.render
fail 'should have raised an exception'
rescue => boom
assert_kind_of NameError, boom
line = boom.backtrace.grep(/^test\.erubis:/).first
assert line, "Backtrace didn't contain test.erubis"
file, line, meth = line.split(":")
assert_equal '13', line
end
end
test "backtrace file and line reporting with locals" do
data = File.read(__FILE__).split("\n__END__\n").last
fail unless data[0] == ?<
template = Tilt::ErubisTemplate.new('test.erubis', 1) { data }
begin
template.render(nil, :name => 'Joe', :foo => 'bar')
fail 'should have raised an exception'
rescue => boom
assert_kind_of RuntimeError, boom
line = boom.backtrace.first
file, line, meth = line.split(":")
assert_equal 'test.erubis', file
assert_equal '6', line
end
end
test "erubis template options" do
template = Tilt::ErubisTemplate.new(nil, :pattern => '\{% %\}') { 'Hey {%= @name %}!' }
scope = Object.new
scope.instance_variable_set :@name, 'Joe'
assert_equal "Hey Joe!", template.render(scope)
end
test "using an instance variable as the outvar" do
template = Tilt::ErubisTemplate.new(nil, :outvar => '@buf') { "<%= 1 + 1 %>" }
scope = Object.new
scope.instance_variable_set(:@buf, 'original value')
assert_equal '2', template.render(scope)
assert_equal 'original value', scope.instance_variable_get(:@buf)
end
test "using Erubis::EscapedEruby subclass via :engine_class option" do
template = Tilt::ErubisTemplate.new(nil, :engine_class => ::Erubis::EscapedEruby) { |t| %(<%= "<p>Hello World!</p>" %>) }
assert_equal "&lt;p&gt;Hello World!&lt;/p&gt;", template.render
end
test "using :escape_html => true option" do
template = Tilt::ErubisTemplate.new(nil, :escape_html => true) { |t| %(<%= "<p>Hello World!</p>" %>) }
assert_equal "&lt;p&gt;Hello World!&lt;/p&gt;", template.render
end
test "using :escape_html => false option" do
template = Tilt::ErubisTemplate.new(nil, :escape_html => false) { |t| %(<%= "<p>Hello World!</p>" %>) }
assert_equal "<p>Hello World!</p>", template.render
end
test "erubis default does not escape html" do
template = Tilt::ErubisTemplate.new { |t| %(<%= "<p>Hello World!</p>" %>) }
assert_equal "<p>Hello World!</p>", template.render
end
test "does not modify options argument" do
options_hash = {:escape_html => true}
template = Tilt::ErubisTemplate.new(nil, options_hash) { |t| "Hello World!" }
assert_equal({:escape_html => true}, options_hash)
end
end
rescue LoadError => boom
warn "Tilt::ErubisTemplate (disabled)"
end
__END__
<html>
<body>
<h1>Hey <%= name %>!</h1>
<p><% fail %></p>
</body>
</html>
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