1 files changed, 59 insertions, 0 deletions
diff --git a/railties/test/generators/migration_generator_test.rb b/railties/test/generators/migration_generator_test.rb
new file mode 100644
index 0000000000..a4335068e6
--- /dev/null
+++ b/railties/test/generators/migration_generator_test.rb
@@ -0,0 +1,59 @@
+require 'abstract_unit'
+require 'generators/generators_test_helper'
+require 'generators/rails/migration/migration_generator'
+
+class MigrationGeneratorTest < GeneratorsTestCase
+
+  def test_migration
+    @migration = "change_title_body_from_posts"
+    run_generator
+    assert_migration "db/migrate/#{@migration}.rb", /class ChangeTitleBodyFromPosts < ActiveRecord::Migration/
+  end
+
+  def test_migration_with_class_name
+    @migration = "ChangeTitleBodyFromPosts"
+    run_generator
+    assert_migration "db/migrate/change_title_body_from_posts.rb", /class #{@migration} < ActiveRecord::Migration/
+  end
+
+  def test_add_migration_with_attributes
+    @migration = "add_title_body_to_posts"
+    run_generator [@migration, "title:string", "body:text"]
+
+    assert_migration "db/migrate/#{@migration}.rb" do |content|
+      assert_class_method content, :up do |up|
+        assert_match /add_column :posts, :title, :string/, up
+        assert_match /add_column :posts, :body, :text/, up
+      end
+
+      assert_class_method content, :down do |down|
+        assert_match /remove_column :posts, :title/, down
+        assert_match /remove_column :posts, :body/, down
+      end
+    end
+  end
+
+  def test_remove_migration_with_attributes
+    @migration = "remove_title_body_from_posts"
+    run_generator [@migration, "title:string", "body:text"]
+
+    assert_migration "db/migrate/#{@migration}.rb" do |content|
+      assert_class_method content, :up do |up|
+        assert_match /remove_column :posts, :title/, up
+        assert_match /remove_column :posts, :body/, up
+      end
+
+      assert_class_method content, :down do |down|
+        assert_match /add_column :posts, :title, :string/, down
+        assert_match /add_column :posts, :body, :text/, down
+      end
+    end
+  end
+
+  protected
+
+    def run_generator(args=[@migration])
+      silence(:stdout) { Rails::Generators::MigrationGenerator.start args, :destination_root => destination_root }
+    end
+
+end