From a66b321bb022836709b0a55ba1c4a693beee286a Mon Sep 17 00:00:00 2001
From: David Heinemeier Hansson <david@loudthinking.com>
Date: Sat, 15 Jan 2005 16:48:12 +0000
Subject: Added the meat for String inflection

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@414 5ecf4fe2-1ee6-0310-87b1-e25e094e27de
---
 activesupport/lib/core_ext/string.rb               |   5 +
 activesupport/lib/core_ext/string/inflections.rb   |  39 ++++++
 .../test/class_inheritable_attributes_test.rb      | 141 +++++++++++++++++++++
 activesupport/test/core_ext/string_ext_test.rb     |  64 ++++++++++
 4 files changed, 249 insertions(+)
 create mode 100644 activesupport/lib/core_ext/string.rb
 create mode 100644 activesupport/lib/core_ext/string/inflections.rb
 create mode 100644 activesupport/test/class_inheritable_attributes_test.rb
 create mode 100644 activesupport/test/core_ext/string_ext_test.rb

diff --git a/activesupport/lib/core_ext/string.rb b/activesupport/lib/core_ext/string.rb
new file mode 100644
index 0000000000..b50e44c598
--- /dev/null
+++ b/activesupport/lib/core_ext/string.rb
@@ -0,0 +1,5 @@
+require File.dirname(__FILE__) + '/string/inflections'
+
+class String
+  include ActiveSupport::CoreExtensions::String::Inflections
+end
diff --git a/activesupport/lib/core_ext/string/inflections.rb b/activesupport/lib/core_ext/string/inflections.rb
new file mode 100644
index 0000000000..90fd013861
--- /dev/null
+++ b/activesupport/lib/core_ext/string/inflections.rb
@@ -0,0 +1,39 @@
+module ActiveSupport
+  module CoreExtensions
+    module String
+      module Inflections
+        def pluralize
+          Inflector.pluralize(self)
+        end
+
+        def singularize
+          Inflector.singularize(self)
+        end
+
+        def camelize
+          Inflector.camelize(self)
+        end
+
+        def underscore
+          Inflector.underscore(self)
+        end
+
+        def demodulize
+          Inflector.demodulize(self)
+        end
+
+        def tableize
+          Inflector.tableize(self)
+        end
+
+        def classify
+          Inflector.classify(self)
+        end
+
+        def foreign_key(separate_class_name_and_id_with_underscore = true)
+          Inflector.foreign_key(self, separate_class_name_and_id_with_underscore)
+        end
+      end
+    end
+  end
+end
diff --git a/activesupport/test/class_inheritable_attributes_test.rb b/activesupport/test/class_inheritable_attributes_test.rb
new file mode 100644
index 0000000000..5bba208e11
--- /dev/null
+++ b/activesupport/test/class_inheritable_attributes_test.rb
@@ -0,0 +1,141 @@
+require 'test/unit'
+require File.dirname(__FILE__) + '/../lib/class_inheritable_attributes'
+
+class ClassInheritableAttributesTest < Test::Unit::TestCase
+  def setup
+    @klass = Class.new
+  end
+
+  def test_reader_declaration
+    assert_nothing_raised do
+      @klass.class_inheritable_reader :a
+      assert_respond_to @klass, :a
+      assert_respond_to @klass.new, :a
+    end
+  end
+
+  def test_writer_declaration
+    assert_nothing_raised do
+      @klass.class_inheritable_writer :a
+      assert_respond_to @klass, :a=
+      assert_respond_to @klass.new, :a=
+    end
+  end
+
+  def test_accessor_declaration
+    assert_nothing_raised do
+      @klass.class_inheritable_accessor :a
+      assert_respond_to @klass, :a
+      assert_respond_to @klass.new, :a
+      assert_respond_to @klass, :a=
+      assert_respond_to @klass.new, :a=
+    end
+  end
+
+  def test_array_declaration
+    assert_nothing_raised do
+      @klass.class_inheritable_array :a
+      assert_respond_to @klass, :a
+      assert_respond_to @klass.new, :a
+      assert_respond_to @klass, :a=
+      assert_respond_to @klass.new, :a=
+    end
+  end
+
+  def test_hash_declaration
+    assert_nothing_raised do
+      @klass.class_inheritable_hash :a
+      assert_respond_to @klass, :a
+      assert_respond_to @klass.new, :a
+      assert_respond_to @klass, :a=
+      assert_respond_to @klass.new, :a=
+    end
+  end
+
+  def test_reader
+    @klass.class_inheritable_reader :a
+    assert_nil @klass.a
+    assert_nil @klass.new.a
+
+    @klass.send(:write_inheritable_attribute, :a, 'a')
+
+    assert_equal 'a', @klass.a
+    assert_equal 'a', @klass.new.a
+    assert_equal @klass.a, @klass.new.a
+    assert_equal @klass.a.id, @klass.new.a.id
+  end
+
+  def test_writer
+    @klass.class_inheritable_reader :a
+    @klass.class_inheritable_writer :a
+
+    assert_nil @klass.a
+    assert_nil @klass.new.a
+
+    @klass.a = 'a'
+    assert_equal 'a', @klass.a
+    @klass.new.a = 'A'
+    assert_equal 'A', @klass.a
+  end
+
+  def test_array
+    @klass.class_inheritable_array :a
+
+    assert_nil @klass.a
+    assert_nil @klass.new.a
+
+    @klass.a = %w(a b c)
+    assert_equal %w(a b c), @klass.a
+    assert_equal %w(a b c), @klass.new.a
+
+    @klass.new.a = %w(A B C)
+    assert_equal %w(a b c A B C), @klass.a
+    assert_equal %w(a b c A B C), @klass.new.a
+  end
+
+  def test_hash
+    @klass.class_inheritable_hash :a
+
+    assert_nil @klass.a
+    assert_nil @klass.new.a
+
+    @klass.a = { :a => 'a' }
+    assert_equal({ :a => 'a' }, @klass.a)
+    assert_equal({ :a => 'a' }, @klass.new.a)
+
+    @klass.new.a = { :b => 'b' }
+    assert_equal({ :a => 'a', :b => 'b' }, @klass.a)
+    assert_equal({ :a => 'a', :b => 'b' }, @klass.new.a)
+  end
+
+  def test_inheritance
+    @klass.class_inheritable_accessor :a
+    @klass.a = 'a'
+
+    @sub = eval("class FlogMe < @klass; end; FlogMe")
+
+    @klass.class_inheritable_accessor :b
+
+    assert_respond_to @sub, :a
+    assert_respond_to @sub, :b
+    assert_equal @klass.a, @sub.a
+    assert_equal @klass.b, @sub.b
+    assert_equal 'a', @sub.a
+    assert_nil @sub.b
+
+    @klass.b = 'b'
+    assert_not_equal @klass.b, @sub.b
+    assert_equal 'b', @klass.b
+    assert_nil @sub.b
+
+    @sub.a = 'A'
+    assert_not_equal @klass.a, @sub.a
+    assert_equal 'a', @klass.a
+    assert_equal 'A', @sub.a
+
+    @sub.b = 'B'
+    assert_not_equal @klass.b, @sub.b
+    assert_equal 'b', @klass.b
+    assert_equal 'B', @sub.b
+  end
+end
diff --git a/activesupport/test/core_ext/string_ext_test.rb b/activesupport/test/core_ext/string_ext_test.rb
new file mode 100644
index 0000000000..317dbcf711
--- /dev/null
+++ b/activesupport/test/core_ext/string_ext_test.rb
@@ -0,0 +1,64 @@
+require 'test/unit'
+require File.dirname(__FILE__) + '/../../lib/core_ext/string'
+require File.dirname(__FILE__) + '/../../lib/misc'
+
+silence_warnings do
+  require File.dirname(__FILE__) + '/../inflector_test'
+end
+
+class StringInflectionsTest < Test::Unit::TestCase
+  def test_pluralize
+    InflectorTest::SingularToPlural.each do |singular, plural|
+      assert_equal(plural, singular.pluralize)
+    end
+
+    assert_equal("plurals", "plurals".pluralize)
+  end
+
+  def test_singularize
+    InflectorTest::SingularToPlural.each do |singular, plural|
+      assert_equal(singular, plural.singularize)
+    end
+  end
+
+  def test_camelize
+    InflectorTest::CamelToUnderscore.each do |camel, underscore|
+      assert_equal(camel, underscore.camelize)
+    end
+  end
+
+  def test_underscore
+    InflectorTest::CamelToUnderscore.each do |camel, underscore|
+      assert_equal(underscore, camel.underscore)
+    end
+    
+    assert_equal "html_tidy", "HTMLTidy".underscore
+    assert_equal "html_tidy_generator", "HTMLTidyGenerator".underscore
+  end
+
+  def test_demodulize
+    assert_equal "Account", Inflector.demodulize("MyApplication::Billing::Account")
+  end
+
+  def test_foreign_key
+    InflectorTest::ClassNameToForeignKeyWithUnderscore.each do |klass, foreign_key|
+      assert_equal(foreign_key, klass.foreign_key)
+    end
+
+    InflectorTest::ClassNameToForeignKeyWithoutUnderscore.each do |klass, foreign_key|
+      assert_equal(foreign_key, klass.foreign_key(false))
+    end
+  end
+
+  def test_tableize
+    InflectorTest::ClassNameToTableName.each do |class_name, table_name|
+      assert_equal(table_name, class_name.tableize)
+    end
+  end
+
+  def test_classify
+    InflectorTest::ClassNameToTableName.each do |class_name, table_name|
+      assert_equal(class_name, table_name.classify)
+    end
+  end
+end
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