Ability to sort the issue list by text, int and float custom fields (#1139).

git-svn-id: svn+ssh://rubyforge.org/var/svn/redmine/trunk@2258 e93f8b46-1217-0410-a6f0-8f06a7374b81

test/unit/query_test.rb

@@ -185,6 +185,7 @@ class QueryTest < Test::Unit::TestCase
                         :conditions => q.statement,
                         :order => "#{c.sortable} ASC"
     values = issues.collect {|i| i.custom_value_for(c.custom_field).to_s}
+    assert !values.empty?
     assert_equal values.sort, values
   end
   
@@ -198,9 +199,24 @@ class QueryTest < Test::Unit::TestCase
                         :conditions => q.statement,
                         :order => "#{c.sortable} DESC"
     values = issues.collect {|i| i.custom_value_for(c.custom_field).to_s}
+    assert !values.empty?
     assert_equal values.sort.reverse, values
   end
   
+  def test_sort_by_float_custom_field_asc
+    q = Query.new
+    c = q.available_columns.find {|col| col.is_a?(QueryCustomFieldColumn) && col.custom_field.field_format == 'float' }
+    assert c
+    assert c.sortable
+    issues = Issue.find :all,
+                        :include => [ :assigned_to, :status, :tracker, :project, :priority ], 
+                        :conditions => q.statement,
+                        :order => "#{c.sortable} ASC"
+    values = issues.collect {|i| begin; Kernel.Float(i.custom_value_for(c.custom_field).to_s); rescue; nil; end}.compact
+    assert !values.empty?
+    assert_equal values.sort, values
+  end
+  
   def test_label_for
     q = Query.new
     assert_equal 'assigned_to', q.label_for('assigned_to_id')