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Prefer class_eval with block to many sends for Ruby 1.9 compat
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git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@7652 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
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jeremy committed Sep 27, 2007
1 parent c81bd19 commit d4e164f
Showing 1 changed file with 72 additions and 53 deletions.
125 changes: 72 additions & 53 deletions activesupport/test/core_ext/module_test.rb
Expand Up @@ -95,9 +95,9 @@ def test_parents
assert_equal [Yz::Zy, Yz, Object], Yz::Zy::Cd.parents
assert_equal [Yz, Object], Yz::Zy.parents
end

def test_local_constants
assert_equal %w(Constant1 Constant3), Ab.local_constants.sort
assert_equal %w(Constant1 Constant3), Ab.local_constants.sort.map(&:to_s)
end

def test_as_load_path
Expand All @@ -108,8 +108,10 @@ def test_as_load_path

module BarMethodAliaser
def self.included(foo_class)
foo_class.send :include, BarMethods
foo_class.alias_method_chain :bar, :baz
foo_class.class_eval do
include BarMethods
alias_method_chain :bar, :baz
end
end
end

Expand All @@ -129,21 +131,20 @@ def quux_with_baz?
def quux_with_baz=(v)
send(:quux_without_baz=, v) << '_with_baz'
end

def duck_with_orange
duck_without_orange << '_with_orange'
end
end

class MethodAliasingTest < Test::Unit::TestCase
def setup
Object.const_set(:FooClassWithBarMethod, Class.new)
FooClassWithBarMethod.send(:define_method, 'bar', Proc.new { 'bar' })
Object.const_set :FooClassWithBarMethod, Class.new { def bar() 'bar' end }
@instance = FooClassWithBarMethod.new
end

def teardown
Object.send(:remove_const, :FooClassWithBarMethod)
Object.instance_eval { remove_const :FooClassWithBarMethod }
end

def test_alias_method_chain
Expand All @@ -156,7 +157,7 @@ def test_alias_method_chain

assert_equal 'bar', @instance.bar

FooClassWithBarMethod.send(:include, BarMethodAliaser)
FooClassWithBarMethod.class_eval { include BarMethodAliaser }

feature_aliases.each do |method|
assert @instance.respond_to?(method)
Expand All @@ -167,25 +168,33 @@ def test_alias_method_chain
end

def test_alias_method_chain_with_punctuation_method
FooClassWithBarMethod.send(:define_method, 'quux!', Proc.new { 'quux' })
FooClassWithBarMethod.class_eval do
def quux!; 'quux' end
end

assert !@instance.respond_to?(:quux_with_baz!)
FooClassWithBarMethod.send(:include, BarMethodAliaser)
FooClassWithBarMethod.alias_method_chain :quux!, :baz
FooClassWithBarMethod.class_eval do
include BarMethodAliaser
alias_method_chain :quux!, :baz
end
assert @instance.respond_to?(:quux_with_baz!)

assert_equal 'quux_with_baz', @instance.quux!
assert_equal 'quux', @instance.quux_without_baz!
end

def test_alias_method_chain_with_same_names_between_predicates_and_bang_methods
FooClassWithBarMethod.send(:define_method, 'quux!', Proc.new { 'quux!' })
FooClassWithBarMethod.send(:define_method, 'quux?', Proc.new { true })
FooClassWithBarMethod.send(:define_method, 'quux=', Proc.new { 'quux=' })
FooClassWithBarMethod.class_eval do
def quux!; 'quux!' end
def quux?; true end
def quux=(v); 'quux=' end
end

assert !@instance.respond_to?(:quux_with_baz!)
assert !@instance.respond_to?(:quux_with_baz?)
assert !@instance.respond_to?(:quux_with_baz=)

FooClassWithBarMethod.send(:include, BarMethodAliaser)
FooClassWithBarMethod.class_eval { include BarMethodAliaser }
assert @instance.respond_to?(:quux_with_baz!)
assert @instance.respond_to?(:quux_with_baz?)
assert @instance.respond_to?(:quux_with_baz=)
Expand All @@ -205,11 +214,13 @@ def test_alias_method_chain_with_same_names_between_predicates_and_bang_methods
end

def test_alias_method_chain_with_feature_punctuation
FooClassWithBarMethod.send(:define_method, 'quux', Proc.new { 'quux' })
FooClassWithBarMethod.send(:define_method, 'quux?', Proc.new { 'quux?' })
FooClassWithBarMethod.send(:include, BarMethodAliaser)
FooClassWithBarMethod.class_eval do
def quux; 'quux' end
def quux?; 'quux?' end
include BarMethodAliaser
alias_method_chain :quux, :baz!
end

FooClassWithBarMethod.alias_method_chain :quux, :baz!
assert_nothing_raised do
assert_equal 'quux_with_baz', @instance.quux_with_baz!
end
Expand All @@ -220,54 +231,62 @@ def test_alias_method_chain_with_feature_punctuation
end

def test_alias_method_chain_yields_target_and_punctuation
FooClassWithBarMethod.send(:define_method, :quux?, Proc.new { })
FooClassWithBarMethod.send :include, BarMethods
block_called = false
FooClassWithBarMethod.alias_method_chain :quux?, :baz do |target, punctuation|
block_called = true
assert_equal 'quux', target
assert_equal '?', punctuation
args = nil

FooClassWithBarMethod.class_eval do
def quux?; end
include BarMethods

FooClassWithBarMethod.alias_method_chain :quux?, :baz do |target, punctuation|
args = [target, punctuation]
end
end
assert block_called

assert_not_nil args
assert_equal 'quux', args[0]
assert_equal '?', args[1]
end

def test_alias_method_chain_preserves_private_method_status
FooClassWithBarMethod.send(:define_method, 'duck', Proc.new { 'duck' })
FooClassWithBarMethod.send(:include, BarMethodAliaser)
FooClassWithBarMethod.send(:private, :duck)

FooClassWithBarMethod.alias_method_chain :duck, :orange

FooClassWithBarMethod.class_eval do
def duck; 'duck' end
include BarMethodAliaser
private :duck
alias_method_chain :duck, :orange
end

assert_raises NoMethodError do
@instance.duck
end
assert_equal 'duck_with_orange', @instance.send(:duck)

assert_equal 'duck_with_orange', @instance.instance_eval { duck }
assert FooClassWithBarMethod.private_method_defined?(:duck)
end

def test_alias_method_chain_preserves_protected_method_status
FooClassWithBarMethod.send(:define_method, 'duck', Proc.new { 'duck' })
FooClassWithBarMethod.send(:include, BarMethodAliaser)
FooClassWithBarMethod.send(:protected, :duck)

FooClassWithBarMethod.alias_method_chain :duck, :orange

FooClassWithBarMethod.class_eval do
def duck; 'duck' end
include BarMethodAliaser
protected :duck
alias_method_chain :duck, :orange
end

assert_raises NoMethodError do
@instance.duck
end
assert_equal 'duck_with_orange', @instance.send(:duck)

assert_equal 'duck_with_orange', @instance.instance_eval { duck }
assert FooClassWithBarMethod.protected_method_defined?(:duck)
end

def test_alias_method_chain_preserves_public_method_status
FooClassWithBarMethod.send(:define_method, 'duck', Proc.new { 'duck' })
FooClassWithBarMethod.send(:include, BarMethodAliaser)
FooClassWithBarMethod.send(:public, :duck)

FooClassWithBarMethod.alias_method_chain :duck, :orange

FooClassWithBarMethod.class_eval do
def duck; 'duck' end
include BarMethodAliaser
public :duck
alias_method_chain :duck, :orange
end

assert_equal 'duck_with_orange', @instance.duck
assert FooClassWithBarMethod.public_method_defined?(:duck)
end
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