move counter_cache tests to a separate file and refactor

1 files changed, 58 insertions, 0 deletions

diff --git a/activerecord/test/cases/counter_cache_test.rb b/activerecord/test/cases/counter_cache_test.rb
new file mode 100755
index 0000000000..b72356cf6f
--- /dev/null
+++ b/activerecord/test/cases/counter_cache_test.rb
@@ -0,0 +1,58 @@
+require 'cases/helper'
+require 'models/topic'
+require 'models/reply'
+require 'models/category'
+require 'models/categorization'
+
+class CounterCacheTest < ActiveRecord::TestCase
+  fixtures :topics, :categories, :categorizations
+
+  setup do
+    @topic = Topic.find(1)
+  end
+
+  test "increment counter" do
+    assert_difference '@topic.reload.replies_count' do
+      Topic.increment_counter(:replies_count, @topic.id)
+    end
+  end
+
+  test "decrement counter" do
+    assert_difference '@topic.reload.replies_count', -1 do
+      Topic.decrement_counter(:replies_count, @topic.id)
+    end
+  end
+
+  test "reset counters" do
+    # throw the count off by 1
+    Topic.increment_counter(:replies_count, @topic.id)
+
+    # check that it gets reset
+    assert_difference '@topic.reload.replies_count', -1 do
+      Topic.reset_counters(@topic.id, :replies)
+    end
+  end
+
+  test "update counter with initial null value" do
+    category = categories(:general)
+    assert_equal 2, category.categorizations.count
+    assert_nil category.categorizations_count
+
+    Category.update_counters(category.id, :categorizations_count => category.categorizations.count)
+    assert_equal 2, category.reload.categorizations_count
+  end
+
+  test "update counter for decrement" do
+    assert_difference '@topic.reload.replies_count', -3 do
+      Topic.update_counters(@topic.id, :replies_count => -3)
+    end
+  end
+
+  test "update counters of multiple records" do
+    t1, t2 = topics(:first, :second)
+
+    assert_difference ['t1.reload.replies_count', 't2.reload.replies_count'], 2 do
+      Topic.update_counters([t1.id, t2.id], :replies_count => 2)
+    end
+  end
+end