Ruby 1.9 style String interpolation support for lower ruby versions. Thanks to code from Masao Mutoh's GetText gem. [#2870 state:resolved]

Signed-off-by: Yehuda Katz <wycats@yehuda-katzs-macbookpro41.local>

1 files changed, 62 insertions, 0 deletions

diff --git a/activesupport/test/core_ext/string_ext_test.rb b/activesupport/test/core_ext/string_ext_test.rb
index 6991b174b7..f77ad5236e 100644
--- a/activesupport/test/core_ext/string_ext_test.rb
+++ b/activesupport/test/core_ext/string_ext_test.rb
@@ -280,3 +280,65 @@ class CoreExtStringMultibyteTest < ActiveSupport::TestCase
     end
   end
 end
+
+=begin
+  string.rb - Interpolation for String.
+
+  Copyright (C) 2005-2009 Masao Mutoh
+ 
+  You may redistribute it and/or modify it under the same
+  license terms as Ruby.
+=end
+class TestGetTextString < Test::Unit::TestCase
+  def test_sprintf
+    assert_equal("foo is a number", "%{msg} is a number" % {:msg => "foo"})
+    assert_equal("bar is a number", "%s is a number" % ["bar"])
+    assert_equal("bar is a number", "%s is a number" % "bar")
+    assert_equal("1, test", "%{num}, %{record}" % {:num => 1, :record => "test"})
+    assert_equal("test, 1", "%{record}, %{num}" % {:num => 1, :record => "test"})
+    assert_equal("1, test", "%d, %s" % [1, "test"])
+    assert_equal("test, 1", "%2$s, %1$d" % [1, "test"])
+    assert_raise(ArgumentError) { "%-%" % [1] }
+  end
+
+  def test_percent
+    assert_equal("% 1", "%% %<num>d" % {:num => 1.0})
+    assert_equal("%{num} %<num>d", "%%{num} %%<num>d" % {:num => 1})
+  end
+
+  def test_sprintf_percent_in_replacement
+    assert_equal("%<not_translated>s", "%{msg}" % { :msg => '%<not_translated>s', :not_translated => 'should not happen' })
+  end
+
+  def test_sprintf_lack_argument
+    assert_equal("%{num}, test", "%{num}, %{record}" % {:record => "test"})
+    assert_equal("%{record}", "%{record}" % {:num => 1})
+  end
+
+  def test_no_placeholder
+    assert_equal("aaa", "aaa" % {:num => 1})
+    assert_equal("bbb", "bbb" % [1])
+  end
+
+  def test_sprintf_ruby19_style
+    assert_equal("1", "%<num>d" % {:num => 1})
+    assert_equal("0b1", "%<num>#b" % {:num => 1})
+    assert_equal("foo", "%<msg>s" % {:msg => "foo"})
+    assert_equal("1.000000", "%<num>f" % {:num => 1.0})
+    assert_equal("  1", "%<num>3.0f" % {:num => 1.0})
+    assert_equal("100.00", "%<num>2.2f" % {:num => 100.0})
+    assert_equal("0x64", "%<num>#x" % {:num => 100.0})
+    assert_raise(ArgumentError) { "%<num>,d" % {:num => 100} }
+    assert_raise(ArgumentError) { "%<num>/d" % {:num => 100} }
+  end
+
+  def test_sprintf_old_style
+    assert_equal("foo 1.000000", "%s %f" % ["foo", 1.0])
+  end
+
+  def test_sprintf_mix
+    assert_equal("foo 1.000000", "%{name} %<num>f" % {:name => "foo", :num => 1.0})
+    assert_equal("%{name} 1.000000", "%{name} %f" % [1.0])
+    assert_equal("%{name} 1.000000", "%{name} %f" % [1.0, 2.0])
+  end
+end