Test detect collection methods.

lib/simple_form/components/input.rb

@@ -35,7 +35,7 @@ module SimpleForm
         args = [ @attribute ]
 
         if mapping.collection
-          collection = @options[:collection] || self.class.boolean_collection
+          collection = (@options[:collection] || self.class.boolean_collection).to_a
           detect_collection_methods(collection, @options)
           args.push(collection, @options[:value_method], @options[:label_method])
         end
@@ -47,20 +47,19 @@ module SimpleForm
       end
 
       def detect_collection_methods(collection, options)
-        sample = collection.first
-
-        if sample.is_a?(Array) # TODO Test me
-          options[:label_method] ||= :first
-          options[:value_method] ||= :last
-        elsif sample.is_a?(String) # TODO Test me
-          options[:label_method] ||= :to_s
-          options[:value_method] ||= :to_s
-        elsif sample.is_a?(Numeric) # TODO Test me (including selected)
-          options[:label_method] ||= :to_s
-          options[:value_method] ||= :to_i
-        else # TODO Implement collection label methods or something similar
-          options[:label_method] ||= :to_s
-          options[:value_method] ||= :to_s
+        case collection.first
+          when Array
+            options[:label_method] ||= :first
+            options[:value_method] ||= :last
+          when String
+            options[:label_method] ||= :to_s
+            options[:value_method] ||= :to_s
+          when Numeric
+            options[:label_method] ||= :to_s
+            options[:value_method] ||= :to_i
+          else
+            options[:label_method] ||= :to_s
+            options[:value_method] ||= :to_s
         end
       end
     end

test/components/input_test.rb

@@ -158,7 +158,19 @@ class InputTest < ActionView::TestCase
     assert_select 'select option', 'Carlos'
   end
 
-  test 'inputs should allow overriding collection for radio types' do
+  test 'input should mark the selected value by default' do
+    @user.name = "Carlos"
+    with_input_for :name, :select, :collection => ['Jose', 'Carlos']
+    assert_select 'select option[selected=selected]', 'Carlos'
+  end
+
+  test 'input should mark the selected value also when using integers' do
+    @user.age = 18
+    with_input_for :age, :select, :collection => 18..60
+    assert_select 'select option[selected=selected]', '18'
+  end
+
+  test 'input should allow overriding collection for radio types' do
     with_input_for :name, :radio, :collection => ['Jose', 'Carlos']
     assert_select 'input[type=radio][value=Jose]'
     assert_select 'input[type=radio][value=Carlos]'
@@ -166,6 +178,12 @@ class InputTest < ActionView::TestCase
     assert_select 'label.radio', 'Carlos'
   end
 
+  test 'input should mark the current radio value by default' do
+    @user.name = "Carlos"
+    with_input_for :name, :radio, :collection => ['Jose', 'Carlos']
+    assert_select 'input[type=radio][value=Carlos][checked=checked]'
+  end
+
   test 'input should allow using a collection with text/value arrays' do
     with_input_for :name, :radio, :collection => [['Jose', 'jose'], ['Carlos', 'carlos']]
     assert_select 'input[type=radio][value=jose]'
@@ -193,5 +211,6 @@ class InputTest < ActionView::TestCase
   test 'input should allow disabling required' do
     with_input_for :name, :string, :required => false
     assert_no_select 'input.required'
+    assert_select 'input.optional#user_name'
   end
 end

test/test_helper.rb

@@ -4,6 +4,11 @@ require 'test/unit'
 require 'action_controller'
 require 'action_view/test_case'
 
+begin
+  require 'ruby-debug'
+rescue LoadError
+end
+
 $:.unshift File.join(File.dirname(__FILE__), '..', 'lib', 'simple_form')
 require 'simple_form'