diff options
Diffstat (limited to 'activerecord/test/cases/relations_test.rb')
| -rw-r--r-- | activerecord/test/cases/relations_test.rb | 197 |
1 files changed, 74 insertions, 123 deletions
diff --git a/activerecord/test/cases/relations_test.rb b/activerecord/test/cases/relations_test.rb index e1a760d240..baa3acf3fb 100644 --- a/activerecord/test/cases/relations_test.rb +++ b/activerecord/test/cases/relations_test.rb @@ -42,6 +42,11 @@ class RelationTest < ActiveRecord::TestCase end def test_two_scopes_with_includes_should_not_drop_any_include + # heat habtm cache + car = Car.incl_engines.incl_tyres.first + car.tyres.length + car.engines.length + car = Car.incl_engines.incl_tyres.first assert_no_queries { car.tyres.length } assert_no_queries { car.engines.length } @@ -139,6 +144,13 @@ class RelationTest < ActiveRecord::TestCase assert_equal relation.to_a, Topic.select('a.*').from(relation, :a).to_a end + def test_finding_with_subquery_with_binds + relation = Post.first.comments + assert_equal relation.to_a, Comment.select('*').from(relation).to_a + assert_equal relation.to_a, Comment.select('subquery.*').from(relation).to_a + assert_equal relation.to_a, Comment.select('a.*').from(relation, :a).to_a + end + def test_finding_with_conditions assert_equal ["David"], Author.where(:name => 'David').map(&:name) assert_equal ['Mary'], Author.where(["name = ?", 'Mary']).map(&:name) @@ -262,7 +274,7 @@ class RelationTest < ActiveRecord::TestCase def test_none_chained_to_methods_firing_queries_straight_to_db assert_no_queries do - assert_equal [], Developer.none.pluck(:id) # => uses select_all + assert_equal [], Developer.none.pluck(:id, :name) assert_equal 0, Developer.none.delete_all assert_equal 0, Developer.none.update_all(:name => 'David') assert_equal 0, Developer.none.delete(1) @@ -283,7 +295,7 @@ class RelationTest < ActiveRecord::TestCase def test_null_relation_calculations_methods assert_no_queries do assert_equal 0, Developer.none.count - assert_equal 0, Developer.none.calculate(:count, nil, {}) + assert_equal 0, Developer.none.calculate(:count, nil) assert_equal nil, Developer.none.calculate(:average, 'salary') end end @@ -293,6 +305,10 @@ class RelationTest < ActiveRecord::TestCase assert_equal({}, Developer.none.where_values_hash) end + def test_null_relation_where_values_hash + assert_equal({ 'salary' => 100_000 }, Developer.none.where(salary: 100_000).where_values_hash) + end + def test_joins_with_nil_argument assert_nothing_raised { DependentFirm.joins(nil).first } end @@ -470,6 +486,14 @@ class RelationTest < ActiveRecord::TestCase assert_equal Developer.where(name: 'David').map(&:id).sort, developers end + def test_includes_with_select + query = Post.select('comments_count AS ranking').order('ranking').includes(:comments) + .where(comments: { id: 1 }) + + assert_equal ['comments_count AS ranking'], query.select_values + assert_equal 1, query.to_a.size + end + def test_loading_with_one_association posts = Post.preload(:comments) post = posts.find { |p| p.id == 1 } @@ -610,6 +634,36 @@ class RelationTest < ActiveRecord::TestCase relation = Author.where(:id => Author.where(:id => david.id)) assert_equal [david], relation.to_a } + + assert_queries(1) { + relation = Author.where('id in (?)', Author.where(id: david).select(:id)) + assert_equal [david], relation.to_a + } + + assert_queries(1) do + relation = Author.where('id in (:author_ids)', author_ids: Author.where(id: david).select(:id)) + assert_equal [david], relation.to_a + end + end + + def test_find_all_using_where_with_relation_with_bound_values + david = authors(:david) + davids_posts = david.posts.order(:id).to_a + + assert_queries(1) do + relation = Post.where(id: david.posts.select(:id)) + assert_equal davids_posts, relation.order(:id).to_a + end + + assert_queries(1) do + relation = Post.where('id in (?)', david.posts.select(:id)) + assert_equal davids_posts, relation.order(:id).to_a, 'should process Relation as bind variables' + end + + assert_queries(1) do + relation = Post.where('id in (:post_ids)', post_ids: david.posts.select(:id)) + assert_equal davids_posts, relation.order(:id).to_a, 'should process Relation as named bind variables' + end end def test_find_all_using_where_with_relation_and_alternate_primary_key @@ -720,75 +774,6 @@ class RelationTest < ActiveRecord::TestCase assert_raises(ArgumentError) { Developer.select } end - def test_relation_merging - devs = Developer.where("salary >= 80000").merge(Developer.limit(2)).merge(Developer.order('id ASC').where("id < 3")) - assert_equal [developers(:david), developers(:jamis)], devs.to_a - - dev_with_count = Developer.limit(1).merge(Developer.order('id DESC')).merge(Developer.select('developers.*')) - assert_equal [developers(:poor_jamis)], dev_with_count.to_a - end - - def test_relation_to_sql - sql = Post.connection.unprepared_statement do - Post.first.comments.to_sql - end - assert_no_match(/\?/, sql) - end - - def test_relation_merging_with_arel_equalities_keeps_last_equality - devs = Developer.where(Developer.arel_table[:salary].eq(80000)).merge( - Developer.where(Developer.arel_table[:salary].eq(9000)) - ) - assert_equal [developers(:poor_jamis)], devs.to_a - end - - def test_relation_merging_with_arel_equalities_keeps_last_equality_with_non_attribute_left_hand - salary_attr = Developer.arel_table[:salary] - devs = Developer.where( - Arel::Nodes::NamedFunction.new('abs', [salary_attr]).eq(80000) - ).merge( - Developer.where( - Arel::Nodes::NamedFunction.new('abs', [salary_attr]).eq(9000) - ) - ) - assert_equal [developers(:poor_jamis)], devs.to_a - end - - def test_relation_merging_with_eager_load - relations = [] - relations << Post.order('comments.id DESC').merge(Post.eager_load(:last_comment)).merge(Post.all) - relations << Post.eager_load(:last_comment).merge(Post.order('comments.id DESC')).merge(Post.all) - - relations.each do |posts| - post = posts.find { |p| p.id == 1 } - assert_equal Post.find(1).last_comment, post.last_comment - end - end - - def test_relation_merging_with_locks - devs = Developer.lock.where("salary >= 80000").order("id DESC").merge(Developer.limit(2)) - assert devs.locked.present? - end - - def test_relation_merging_with_preload - [Post.all.merge(Post.preload(:author)), Post.preload(:author).merge(Post.all)].each do |posts| - assert_queries(2) { assert posts.first.author } - end - end - - def test_relation_merging_with_joins - comments = Comment.joins(:post).where(:body => 'Thank you for the welcome').merge(Post.where(:body => 'Such a lovely day')) - assert_equal 1, comments.count - end - - def test_relation_merging_with_association - assert_queries(2) do # one for loading post, and another one merged query - post = Post.where(:body => 'Such a lovely day').first - comments = Comment.where(:body => 'Thank you for the welcome').merge(post.comments) - assert_equal 1, comments.count - end - end - def test_count posts = Post.all @@ -1344,6 +1329,24 @@ class RelationTest < ActiveRecord::TestCase assert_equal [], scope.references_values end + def test_automatically_added_reorder_references + scope = Post.reorder('comments.body') + assert_equal %w(comments), scope.references_values + + scope = Post.reorder('comments.body', 'yaks.body') + assert_equal %w(comments yaks), scope.references_values + + # Don't infer yaks, let's not go down that road again... + scope = Post.reorder('comments.body, yaks.body') + assert_equal %w(comments), scope.references_values + + scope = Post.reorder('comments.body asc') + assert_equal %w(comments), scope.references_values + + scope = Post.reorder('foo(comments.body)') + assert_equal [], scope.references_values + end + def test_presence topics = Topic.all @@ -1525,56 +1528,4 @@ class RelationTest < ActiveRecord::TestCase Array.send(:remove_method, :__omg__) end end - - test "merge collapses wheres from the LHS only" do - left = Post.where(title: "omg").where(comments_count: 1) - right = Post.where(title: "wtf").where(title: "bbq") - - expected = [left.where_values[1]] + right.where_values - merged = left.merge(right) - - assert_equal expected, merged.where_values - assert !merged.to_sql.include?("omg") - assert merged.to_sql.include?("wtf") - assert merged.to_sql.include?("bbq") - end - - def test_merging_removes_rhs_bind_parameters - left = Post.where(id: Arel::Nodes::BindParam.new('?')) - column = Post.columns_hash['id'] - left.bind_values += [[column, 20]] - right = Post.where(id: 10) - - merged = left.merge(right) - assert_equal [], merged.bind_values - end - - def test_merging_keeps_lhs_bind_parameters - column = Post.columns_hash['id'] - binds = [[column, 20]] - - right = Post.where(id: Arel::Nodes::BindParam.new('?')) - right.bind_values += binds - left = Post.where(id: 10) - - merged = left.merge(right) - assert_equal binds, merged.bind_values - end - - def test_merging_reorders_bind_params - post = Post.first - id_column = Post.columns_hash['id'] - title_column = Post.columns_hash['title'] - - bv = Post.connection.substitute_at id_column, 0 - - right = Post.where(id: bv) - right.bind_values += [[id_column, post.id]] - - left = Post.where(title: bv) - left.bind_values += [[title_column, post.title]] - - merged = left.merge(right) - assert_equal post, merged.first - end end |