gistfile1.diff

diff --git a/app/models/sample.rb b/app/models/sample.rb
new file mode 100644
index 0000000..7d523a9
--- /dev/null
+++ b/app/models/sample.rb
@@ -0,0 +1,3 @@
+class Sample < ActiveRecord::Base
+      validates_presence_of :value
+end
diff --git a/db/migrate/20090522160717_create_samples.rb b/db/migrate/20090522160717_create_samples.rb
new file mode 100644
index 0000000..3f84e3f
--- /dev/null
+++ b/db/migrate/20090522160717_create_samples.rb
@@ -0,0 +1,12 @@
+class CreateSamples < ActiveRecord::Migration
+  def self.up
+    create_table :samples do |t|
+      t.boolean :value
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :samples
+  end
+end
diff --git a/log/development.log b/log/development.log
deleted file mode 100644
index e69de29..0000000
diff --git a/test/unit/sample_test.rb b/test/unit/sample_test.rb
new file mode 100644
index 0000000..21fbf01
--- /dev/null
+++ b/test/unit/sample_test.rb
@@ -0,0 +1,14 @@
+require 'test_helper'
+
+class SampleTest < ActiveSupport::TestCase
+      def test_validation
+      	  s = Sample.new
+	  assert ! s.valid?
+	  s.value = true
+	  assert s.valid?
+	  s.value = nil
+	  assert ! s.valid?
+	  s.value = false
+	  assert s.valid?
+      end
+end