Initial Version of Deprecation for Rails[Koz]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@4623 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

1 files changed, 85 insertions, 0 deletions

diff --git a/activesupport/test/deprecation_test.rb b/activesupport/test/deprecation_test.rb
new file mode 100644
index 0000000000..c691b5bde0
--- /dev/null
+++ b/activesupport/test/deprecation_test.rb
@@ -0,0 +1,85 @@
+require 'test/unit'
+require File.dirname(__FILE__) + '/../lib/active_support/deprecation'
+
+# Stub out the warnings to allow assertions
+module ActiveSupport
+  module Deprecation
+    class << self
+      def issue_warning(message)
+        @@warning = message
+      end
+      def last_warning
+        @@warning
+      end
+    end
+  end
+end
+
+class DeprecationTestingClass
+
+  def partiallly_deprecated(foo = nil)
+    if foo.nil?
+      ActiveSupport::Deprecation.issue_warning("calling partially_deprecated with foo=nil is now deprecated")
+    end
+  end
+  
+  def not_deprecated
+    2
+  end
+  
+  def deprecated_no_args
+    1
+  end
+  deprecate :deprecated_no_args
+  
+  def deprecated_one_arg(a)
+    a
+  end
+  deprecate :deprecated_one_arg
+  
+  def deprecated_multiple_args(a,b,c)
+    [a,b,c]
+  end
+  deprecate :deprecated_multiple_args
+  
+end
+
+
+class DeprecationTest < Test::Unit::TestCase
+  def setup
+    @dtc = DeprecationTestingClass.new
+    ActiveSupport::Deprecation.issue_warning(nil) # reset
+  end
+  
+  def test_partial_deprecation
+    @dtc.partiallly_deprecated
+    assert_warning_matches /foo=nil/
+  end
+  
+  def test_raises_nothing
+    assert_equal 2, @dtc.not_deprecated
+  end
+  
+  def test_deprecating_class_method
+    assert_equal 1, @dtc.deprecated_no_args
+    assert_deprecation_warning
+    assert_warning_matches /DeprecationTestingClass#deprecated_no_args/
+  end
+  
+  def test_deprecating_class_method_with_argument
+    assert_equal 1, @dtc.deprecated_one_arg(1)
+  end
+  
+  def test_deprecating_class_method_with_argument
+    assert_equal [1,2,3], @dtc.deprecated_multiple_args(1,2,3)
+  end
+  
+  private
+  def assert_warning_matches(rx)
+    assert ActiveSupport::Deprecation.last_warning =~ rx, "The deprecation warning did not match #{rx}"
+  end
+  
+  def assert_deprecation_warning
+    assert_not_nil ActiveSupport::Deprecation.last_warning, "No Deprecation warnings were issued"
+  end
+end