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|
# -----------------------------------------------------------------------------
#
# Blockenspiel dynamic tests
#
# This file contains tests for dynamic DSL generation.
#
# -----------------------------------------------------------------------------
# Copyright 2008-2011 Daniel Azuma
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# * Neither the name of the copyright holder, nor the names of any other
# contributors to this software, may be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
# -----------------------------------------------------------------------------
;
require 'test/unit'
require 'blockenspiel'
module Blockenspiel
module Tests # :nodoc:
class TestDynamic < ::Test::Unit::TestCase # :nodoc:
# Test the simple case.
#
# * Asserts that the simplest case works.
def test_simple
block_ = ::Proc.new do
set_value(:a, 1)
end
hash_ = ::Hash.new
::Blockenspiel.invoke(block_) do
add_method(:set_value) do |key_, value_|
hash_[key_] = value_
end
end
assert_equal(1, hash_[:a])
end
# Test renaming.
#
# * Asserts that the method appears renamed in a parameterless block.
# * Asserts that the method appears in its original name in a parametered block.
def test_renaming
hash_ = ::Hash.new
dsl_definition_ = ::Proc.new do
add_method(:set_value, :dsl_method => :renamed_set_value) do |key_, value_|
hash_[key_] = value_
end
end
block1_ = ::Proc.new do
renamed_set_value(:a, 1)
assert_raise(::NoMethodError){ set_value(:b, 2) }
end
::Blockenspiel.invoke(block1_, &dsl_definition_)
block2_ = ::Proc.new do |dsl_|
dsl_.set_value(:c, 3)
assert_raise(::NoMethodError){ renamed_set_value(:d, 4) }
end
::Blockenspiel.invoke(block2_, &dsl_definition_)
assert_equal(1, hash_[:a])
assert_nil(hash_[:b])
assert_equal(3, hash_[:c])
assert_nil(hash_[:d])
end
# Test calls with blocks passed the usual way.
# Note: this will fail in MRI < 1.8.7 and JRuby < 1.5.
#
# * Asserts that a block passed the usual way works
# * Asserts that we can detect when a block has not been passed
def test_blocks_normal
hash_ = ::Hash.new
block_ = ::Proc.new do
set_value1(:a){ 1 }
set_value2(:b){ 2 }
set_value2(:c)
end
::Blockenspiel.invoke(block_) do
add_method(:set_value1) do |key_, &bl_|
hash_[key_] = bl_.call
end
add_method(:set_value2) do |key_, &bl_|
hash_[key_] = bl_ ? true : false
end
end
assert_equal(1, hash_[:a])
assert_equal(true, hash_[:b])
assert_equal(false, hash_[:c])
end
# Test calls with blocks passed as non-block parameters.
#
# * Asserts that a block passed "first" works.
# * Asserts that a block passed "last" works.
# * Asserts that a block passed "true" works.
def test_blocks_first_and_last
hash_ = ::Hash.new
block_ = ::Proc.new do
set_value1(:a){ 1 }
set_value2(:b){ 2 }
set_value2(:c){ 3 }
end
::Blockenspiel.invoke(block_) do
add_method(:set_value1, :block => :first) do |bl_, key_|
hash_[key_] = bl_.call
end
add_method(:set_value2, :block => :last) do |key_, bl_|
hash_[key_] = bl_.call
end
add_method(:set_value3, :block => true) do |bl_, key_|
hash_[key_] = bl_.call
end
end
assert_equal(1, hash_[:a])
assert_equal(2, hash_[:b])
assert_equal(3, hash_[:c])
end
# Test calls with blocks not passed.
#
# * Asserts that if a block isn't given, it is set to nil.
def test_blocks_nil
hash_ = ::Hash.new
block_ = ::Proc.new do
set_value1(:a)
set_value2(:b)
end
::Blockenspiel.invoke(block_) do
add_method(:set_value1, :block => :first) do |bl_, key_|
assert_nil(bl_)
end
add_method(:set_value2, :block => :last) do |key_, bl_|
assert_nil(bl_)
end
end
assert_nil(hash_[:a])
assert_nil(hash_[:b])
end
# Test calls with blocks (legacy api)
#
# * Asserts that a block with receive_block works.
def test_blocks_legacy
hash_ = ::Hash.new
block_ = ::Proc.new do
set_value(:a){ 1 }
end
::Blockenspiel.invoke(block_) do
add_method(:set_value, :receive_block => true) do |key_, bl_|
hash_[key_] = bl_.call
end
end
assert_equal(1, hash_[:a])
end
# Test passing options in.
#
# * Asserts that the "parameter" option is recognized
def test_options_recognized
block_ = ::Proc.new do
set_value(:a, 1)
end
hash_ = ::Hash.new
assert_raise(::Blockenspiel::BlockParameterError) do
::Blockenspiel.invoke(block_, :parameterless => false) do
add_method(:set_value) do |key_, value_|
hash_[key_] = value_
end
end
end
end
end
end
end
|
