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tests for Relation .present? and .blank? are check cases and shouldn't force sql-count

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Thiago Almeida 2012-03-16 11:04:24 -03:00
parent 9d52b45a5b
commit 4498f93e68
1 changed files with 19 additions and 0 deletions
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19
activerecord/test/cases/relations_test.rb
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@ -1234,4 +1234,23 @@ class RelationTest < ActiveRecord::TestCase
scope = Post.order('foo(comments.body)')
assert_equal [], scope.references_values
end
def test_presence
topics = Topic.scoped
assert_queries(1) do
#checking if there are topics is used before you actually display them,
#thus it shouldn't invoke an extra count query
assert topics.present?
assert !topics.blank?
#shows count of topics and loops after loading the query should not trigger extra queries either
assert_no_queries topics.size
assert_no_queries topics.count
assert_no_queries topics.length
assert_no_queries topics.each
end
assert topics.loaded?
end
end