diff options
Diffstat (limited to 'activerecord/test/cases/relation')
9 files changed, 244 insertions, 129 deletions
diff --git a/activerecord/test/cases/relation/delegation_test.rb b/activerecord/test/cases/relation/delegation_test.rb index 8cb7b82015..2696d1bb00 100644 --- a/activerecord/test/cases/relation/delegation_test.rb +++ b/activerecord/test/cases/relation/delegation_test.rb @@ -1,37 +1,17 @@ +# frozen_string_literal: true + require "cases/helper" require "models/post" require "models/comment" module ActiveRecord - class DelegationTest < ActiveRecord::TestCase - fixtures :posts - - def call_method(target, method) - method_arity = target.to_a.method(method).arity - - if method_arity.zero? - target.public_send(method) - elsif method_arity < 0 - if method == :shuffle! - target.public_send(method) - else - target.public_send(method, 1) - end - elsif method_arity == 1 - target.public_send(method, 1) - else - raise NotImplementedError - end - end - end - - module DelegationWhitelistBlacklistTests + module DelegationWhitelistTests ARRAY_DELEGATES = [ :+, :-, :|, :&, :[], :shuffle, :all?, :collect, :compact, :detect, :each, :each_cons, :each_with_index, :exclude?, :find_all, :flat_map, :group_by, :include?, :length, - :map, :none?, :one?, :partition, :reject, :reverse, - :sample, :second, :sort, :sort_by, :third, + :map, :none?, :one?, :partition, :reject, :reverse, :rotate, + :sample, :second, :sort, :sort_by, :slice, :third, :index, :rindex, :to_ary, :to_set, :to_xml, :to_yaml, :join, :in_groups, :in_groups_of, :to_sentence, :to_formatted_s, :as_json ] @@ -43,18 +23,32 @@ module ActiveRecord end end - class DelegationAssociationTest < DelegationTest - include DelegationWhitelistBlacklistTests + module DeprecatedArelDelegationTests + AREL_METHODS = [ + :with, :orders, :froms, :project, :projections, :taken, :constraints, :exists, :locked, :where_sql, + :ast, :source, :join_sources, :to_dot, :create_insert, :create_true, :create_false + ] + + def test_deprecate_arel_delegation + AREL_METHODS.each do |method| + assert_deprecated { target.public_send(method) } + assert_deprecated { target.public_send(method) } + end + end + end + + class DelegationAssociationTest < ActiveRecord::TestCase + include DelegationWhitelistTests + include DeprecatedArelDelegationTests def target - Post.first.comments + Post.new.comments end end - class DelegationRelationTest < DelegationTest - include DelegationWhitelistBlacklistTests - - fixtures :comments + class DelegationRelationTest < ActiveRecord::TestCase + include DelegationWhitelistTests + include DeprecatedArelDelegationTests def target Comment.all diff --git a/activerecord/test/cases/relation/merging_test.rb b/activerecord/test/cases/relation/merging_test.rb index 9e95149ede..b68b3723f6 100644 --- a/activerecord/test/cases/relation/merging_test.rb +++ b/activerecord/test/cases/relation/merging_test.rb @@ -1,3 +1,5 @@ +# frozen_string_literal: true + require "cases/helper" require "models/author" require "models/comment" @@ -21,7 +23,7 @@ class RelationMergingTest < ActiveRecord::TestCase def test_relation_to_sql post = Post.first sql = post.comments.to_sql - assert_match(/.?post_id.? = #{post.id}\Z/i, sql) + assert_match(/.?post_id.? = #{post.id}\z/i, sql) end def test_relation_merging_with_arel_equalities_keeps_last_equality @@ -56,7 +58,7 @@ class RelationMergingTest < ActiveRecord::TestCase def test_relation_merging_with_locks devs = Developer.lock.where("salary >= 80000").order("id DESC").merge(Developer.limit(2)) - assert devs.locked.present? + assert devs.locked? end def test_relation_merging_with_preload @@ -79,13 +81,11 @@ class RelationMergingTest < ActiveRecord::TestCase end test "merge collapses wheres from the LHS only" do - left = Post.where(title: "omg").where(comments_count: 1) + left = Post.where(title: "omg").where(comments_count: 1) right = Post.where(title: "wtf").where(title: "bbq") - expected = [left.bound_attributes[1]] + right.bound_attributes - merged = left.merge(right) + merged = left.merge(right) - assert_equal expected, merged.bound_attributes assert_not_includes merged.to_sql, "omg" assert_includes merged.to_sql, "wtf" assert_includes merged.to_sql, "bbq" @@ -143,7 +143,7 @@ class MergingDifferentRelationsTest < ActiveRecord::TestCase assert_equal ["Mary", "Mary", "Mary", "David"], posts_by_author_name end - test "relation merging (using a proc argument)" do + test "relation merging (using a proc argument)" do dev = Developer.where(name: "Jamis").first comment_1 = dev.comments.create!(body: "I'm Jamis", post: Post.first) diff --git a/activerecord/test/cases/relation/mutation_test.rb b/activerecord/test/cases/relation/mutation_test.rb index 11ef0d8743..ad3700b73a 100644 --- a/activerecord/test/cases/relation/mutation_test.rb +++ b/activerecord/test/cases/relation/mutation_test.rb @@ -1,42 +1,11 @@ +# frozen_string_literal: true + require "cases/helper" require "models/post" module ActiveRecord class RelationMutationTest < ActiveRecord::TestCase - FakeKlass = Struct.new(:table_name, :name) do - extend ActiveRecord::Delegation::DelegateCache - inherited self - - def connection - Post.connection - end - - def relation_delegate_class(klass) - self.class.relation_delegate_class(klass) - end - - def attribute_alias?(name) - false - end - - def sanitize_sql(sql) - sql - end - - def sanitize_sql_for_order(sql) - sql - end - - def arel_attribute(name, table) - table[name] - end - end - - def relation - @relation ||= Relation.new FakeKlass.new("posts"), Post.arel_table, Post.predicate_builder - end - - (Relation::MULTI_VALUE_METHODS - [:references, :extending, :order, :unscope, :select, :left_joins]).each do |method| + (Relation::MULTI_VALUE_METHODS - [:references, :extending, :order, :unscope, :select]).each do |method| test "##{method}!" do assert relation.public_send("#{method}!", :foo).equal?(relation) assert_equal [:foo], relation.public_send("#{method}_values") @@ -90,7 +59,7 @@ module ActiveRecord assert_equal [], relation.extending_values end - (Relation::SINGLE_VALUE_METHODS - [:lock, :reordering, :reverse_order, :create_with]).each do |method| + (Relation::SINGLE_VALUE_METHODS - [:lock, :reordering, :reverse_order, :create_with, :skip_query_cache]).each do |method| test "##{method}!" do assert relation.public_send("#{method}!", :foo).equal?(relation) assert_equal :foo, relation.public_send("#{method}_value") @@ -162,5 +131,15 @@ module ActiveRecord relation.distinct! :foo assert_equal :foo, relation.distinct_value end + + test "skip_query_cache!" do + relation.skip_query_cache! + assert relation.skip_query_cache_value + end + + private + def relation + @relation ||= Relation.new(FakeKlass, Post.arel_table, Post.predicate_builder) + end end end diff --git a/activerecord/test/cases/relation/or_test.rb b/activerecord/test/cases/relation/or_test.rb index abb7ca72dd..7e418f9c7d 100644 --- a/activerecord/test/cases/relation/or_test.rb +++ b/activerecord/test/cases/relation/or_test.rb @@ -1,9 +1,14 @@ +# frozen_string_literal: true + require "cases/helper" +require "models/author" +require "models/categorization" require "models/post" module ActiveRecord class OrTest < ActiveRecord::TestCase fixtures :posts + fixtures :authors, :author_addresses def test_or_with_relation expected = Post.where("id = 1 or id = 2").to_a @@ -26,7 +31,7 @@ module ActiveRecord end def test_or_with_bind_params - assert_equal Post.find([1, 2]), Post.where(id: 1).or(Post.where(id: 2)).to_a + assert_equal Post.find([1, 2]).sort_by(&:id), Post.where(id: 1).or(Post.where(id: 2)).sort_by(&:id) end def test_or_with_null_both @@ -59,6 +64,31 @@ module ActiveRecord assert_equal "Relation passed to #or must be structurally compatible. Incompatible values: [:order]", error.message end + def test_or_with_unscope_where + expected = Post.where("id = 1 or id = 2") + partial = Post.where("id = 1 and id != 2") + assert_equal expected, partial.or(partial.unscope(:where).where("id = 2")).to_a + end + + def test_or_with_unscope_where_column + expected = Post.where("id = 1 or id = 2") + partial = Post.where(id: 1).where.not(id: 2) + assert_equal expected, partial.or(partial.unscope(where: :id).where("id = 2")).to_a + end + + def test_or_with_unscope_order + expected = Post.where("id = 1 or id = 2") + assert_equal expected, Post.order("body asc").where("id = 1").unscope(:order).or(Post.where("id = 2")).to_a + end + + def test_or_with_incompatible_unscope + error = assert_raises ArgumentError do + Post.order("body asc").where("id = 1").or(Post.order("body asc").where("id = 2").unscope(:order)).to_a + end + + assert_equal "Relation passed to #or must be structurally compatible. Incompatible values: [:order]", error.message + end + def test_or_when_grouping groups = Post.where("id < 10").group("body").select("body, COUNT(*) AS c") expected = groups.having("COUNT(*) > 1 OR body like 'Such%'").to_a.map { |o| [o.body, o.c] } @@ -88,5 +118,13 @@ module ActiveRecord Post.where(id: [1, 2, 3]).or(title: "Rails") end end + + def test_or_with_references_inequality + joined = Post.includes(:author) + actual = joined.where(authors: { id: 1 }) + .or(joined.where(title: "I don't have any comments")) + expected = Author.find(1).posts + Post.where(title: "I don't have any comments") + assert_equal expected.sort_by(&:id), actual.sort_by(&:id) + end end end diff --git a/activerecord/test/cases/relation/predicate_builder_test.rb b/activerecord/test/cases/relation/predicate_builder_test.rb index 48758dc148..b432330deb 100644 --- a/activerecord/test/cases/relation/predicate_builder_test.rb +++ b/activerecord/test/cases/relation/predicate_builder_test.rb @@ -1,3 +1,5 @@ +# frozen_string_literal: true + require "cases/helper" require "models/topic" diff --git a/activerecord/test/cases/relation/record_fetch_warning_test.rb b/activerecord/test/cases/relation/record_fetch_warning_test.rb index 62ca051431..22d32d75bc 100644 --- a/activerecord/test/cases/relation/record_fetch_warning_test.rb +++ b/activerecord/test/cases/relation/record_fetch_warning_test.rb @@ -1,3 +1,5 @@ +# frozen_string_literal: true + require "cases/helper" require "models/post" require "active_record/relation/record_fetch_warning" diff --git a/activerecord/test/cases/relation/where_chain_test.rb b/activerecord/test/cases/relation/where_chain_test.rb index a96d1ae5b5..a68eb2b446 100644 --- a/activerecord/test/cases/relation/where_chain_test.rb +++ b/activerecord/test/cases/relation/where_chain_test.rb @@ -1,3 +1,5 @@ +# frozen_string_literal: true + require "cases/helper" require "models/post" require "models/comment" @@ -25,7 +27,7 @@ module ActiveRecord end def test_association_not_eq - expected = Arel::Nodes::Grouping.new(Comment.arel_table[@name].not_eq(Arel::Nodes::BindParam.new)) + expected = Comment.arel_table[@name].not_eq(Arel::Nodes::BindParam.new(1)) relation = Post.joins(:comments).where.not(comments: { title: "hello" }) assert_equal(expected.to_sql, relation.where_clause.ast.to_sql) end diff --git a/activerecord/test/cases/relation/where_clause_test.rb b/activerecord/test/cases/relation/where_clause_test.rb index d8e4c304f0..e5eb159d36 100644 --- a/activerecord/test/cases/relation/where_clause_test.rb +++ b/activerecord/test/cases/relation/where_clause_test.rb @@ -1,78 +1,86 @@ +# frozen_string_literal: true + require "cases/helper" class ActiveRecord::Relation class WhereClauseTest < ActiveRecord::TestCase test "+ combines two where clauses" do - first_clause = WhereClause.new([table["id"].eq(bind_param)], [["id", 1]]) - second_clause = WhereClause.new([table["name"].eq(bind_param)], [["name", "Sean"]]) + first_clause = WhereClause.new([table["id"].eq(bind_param(1))]) + second_clause = WhereClause.new([table["name"].eq(bind_param("Sean"))]) combined = WhereClause.new( - [table["id"].eq(bind_param), table["name"].eq(bind_param)], - [["id", 1], ["name", "Sean"]], + [table["id"].eq(bind_param(1)), table["name"].eq(bind_param("Sean"))], ) assert_equal combined, first_clause + second_clause end test "+ is associative, but not commutative" do - a = WhereClause.new(["a"], ["bind a"]) - b = WhereClause.new(["b"], ["bind b"]) - c = WhereClause.new(["c"], ["bind c"]) + a = WhereClause.new(["a"]) + b = WhereClause.new(["b"]) + c = WhereClause.new(["c"]) assert_equal a + (b + c), (a + b) + c assert_not_equal a + b, b + a end test "an empty where clause is the identity value for +" do - clause = WhereClause.new([table["id"].eq(bind_param)], [["id", 1]]) + clause = WhereClause.new([table["id"].eq(bind_param(1))]) assert_equal clause, clause + WhereClause.empty end test "merge combines two where clauses" do - a = WhereClause.new([table["id"].eq(1)], []) - b = WhereClause.new([table["name"].eq("Sean")], []) - expected = WhereClause.new([table["id"].eq(1), table["name"].eq("Sean")], []) + a = WhereClause.new([table["id"].eq(1)]) + b = WhereClause.new([table["name"].eq("Sean")]) + expected = WhereClause.new([table["id"].eq(1), table["name"].eq("Sean")]) assert_equal expected, a.merge(b) end test "merge keeps the right side, when two equality clauses reference the same column" do - a = WhereClause.new([table["id"].eq(1), table["name"].eq("Sean")], []) - b = WhereClause.new([table["name"].eq("Jim")], []) - expected = WhereClause.new([table["id"].eq(1), table["name"].eq("Jim")], []) + a = WhereClause.new([table["id"].eq(1), table["name"].eq("Sean")]) + b = WhereClause.new([table["name"].eq("Jim")]) + expected = WhereClause.new([table["id"].eq(1), table["name"].eq("Jim")]) assert_equal expected, a.merge(b) end test "merge removes bind parameters matching overlapping equality clauses" do a = WhereClause.new( - [table["id"].eq(bind_param), table["name"].eq(bind_param)], - [attribute("id", 1), attribute("name", "Sean")], + [table["id"].eq(bind_param(1)), table["name"].eq(bind_param("Sean"))], ) b = WhereClause.new( - [table["name"].eq(bind_param)], - [attribute("name", "Jim")] + [table["name"].eq(bind_param("Jim"))], ) expected = WhereClause.new( - [table["id"].eq(bind_param), table["name"].eq(bind_param)], - [attribute("id", 1), attribute("name", "Jim")], + [table["id"].eq(bind_param(1)), table["name"].eq(bind_param("Jim"))], ) assert_equal expected, a.merge(b) end test "merge allows for columns with the same name from different tables" do - skip "This is not possible as of 4.2, and the binds do not yet contain sufficient information for this to happen" - # We might be able to change the implementation to remove conflicts by index, rather than column name + table2 = Arel::Table.new("table2") + a = WhereClause.new( + [table["id"].eq(bind_param(1)), table2["id"].eq(bind_param(2))], + ) + b = WhereClause.new( + [table["id"].eq(bind_param(3))], + ) + expected = WhereClause.new( + [table2["id"].eq(bind_param(2)), table["id"].eq(bind_param(3))], + ) + + assert_equal expected, a.merge(b) end test "a clause knows if it is empty" do assert WhereClause.empty.empty? - assert_not WhereClause.new(["anything"], []).empty? + assert_not WhereClause.new(["anything"]).empty? end test "invert cannot handle nil" do - where_clause = WhereClause.new([nil], []) + where_clause = WhereClause.new([nil]) assert_raises ArgumentError do where_clause.invert @@ -86,37 +94,47 @@ class ActiveRecord::Relation table["id"].eq(1), "sql literal", random_object - ], []) + ]) expected = WhereClause.new([ table["id"].not_in([1, 2, 3]), table["id"].not_eq(1), Arel::Nodes::Not.new(Arel::Nodes::SqlLiteral.new("sql literal")), Arel::Nodes::Not.new(random_object) - ], []) + ]) assert_equal expected, original.invert end - test "accept removes binary predicates referencing a given column" do + test "except removes binary predicates referencing a given column" do where_clause = WhereClause.new([ table["id"].in([1, 2, 3]), - table["name"].eq(bind_param), - table["age"].gteq(bind_param), - ], [ - attribute("name", "Sean"), - attribute("age", 30), + table["name"].eq(bind_param("Sean")), + table["age"].gteq(bind_param(30)), ]) - expected = WhereClause.new([table["age"].gteq(bind_param)], [attribute("age", 30)]) + expected = WhereClause.new([table["age"].gteq(bind_param(30))]) assert_equal expected, where_clause.except("id", "name") end + test "except jumps over unhandled binds (like with OR) correctly" do + wcs = (0..9).map do |i| + WhereClause.new([table["id#{i}"].eq(bind_param(i))]) + end + + wc = wcs[0] + wcs[1] + wcs[2].or(wcs[3]) + wcs[4] + wcs[5] + wcs[6].or(wcs[7]) + wcs[8] + wcs[9] + + expected = wcs[0] + wcs[2].or(wcs[3]) + wcs[5] + wcs[6].or(wcs[7]) + wcs[9] + actual = wc.except("id1", "id2", "id4", "id7", "id8") + + assert_equal expected, actual + end + test "ast groups its predicates with AND" do predicates = [ table["id"].in([1, 2, 3]), - table["name"].eq(bind_param), + table["name"].eq(bind_param(nil)), ] - where_clause = WhereClause.new(predicates, []) + where_clause = WhereClause.new(predicates) expected = Arel::Nodes::And.new(predicates) assert_equal expected, where_clause.ast @@ -128,55 +146,96 @@ class ActiveRecord::Relation table["id"].in([1, 2, 3]), "foo = bar", random_object, - ], []) + ]) expected = Arel::Nodes::And.new([ table["id"].in([1, 2, 3]), Arel::Nodes::Grouping.new(Arel.sql("foo = bar")), - Arel::Nodes::Grouping.new(random_object), + random_object, ]) assert_equal expected, where_clause.ast end test "ast removes any empty strings" do - where_clause = WhereClause.new([table["id"].in([1, 2, 3])], []) - where_clause_with_empty = WhereClause.new([table["id"].in([1, 2, 3]), ""], []) + where_clause = WhereClause.new([table["id"].in([1, 2, 3])]) + where_clause_with_empty = WhereClause.new([table["id"].in([1, 2, 3]), ""]) assert_equal where_clause.ast, where_clause_with_empty.ast end test "or joins the two clauses using OR" do - where_clause = WhereClause.new([table["id"].eq(bind_param)], [attribute("id", 1)]) - other_clause = WhereClause.new([table["name"].eq(bind_param)], [attribute("name", "Sean")]) + where_clause = WhereClause.new([table["id"].eq(bind_param(1))]) + other_clause = WhereClause.new([table["name"].eq(bind_param("Sean"))]) expected_ast = Arel::Nodes::Grouping.new( - Arel::Nodes::Or.new(table["id"].eq(bind_param), table["name"].eq(bind_param)) + Arel::Nodes::Or.new(table["id"].eq(bind_param(1)), table["name"].eq(bind_param("Sean"))) ) - expected_binds = where_clause.binds + other_clause.binds assert_equal expected_ast.to_sql, where_clause.or(other_clause).ast.to_sql - assert_equal expected_binds, where_clause.or(other_clause).binds end test "or returns an empty where clause when either side is empty" do - where_clause = WhereClause.new([table["id"].eq(bind_param)], [attribute("id", 1)]) + where_clause = WhereClause.new([table["id"].eq(bind_param(1))]) assert_equal WhereClause.empty, where_clause.or(WhereClause.empty) assert_equal WhereClause.empty, WhereClause.empty.or(where_clause) end + test "or places common conditions before the OR" do + a = WhereClause.new( + [table["id"].eq(bind_param(1)), table["name"].eq(bind_param("Sean"))], + ) + b = WhereClause.new( + [table["id"].eq(bind_param(1)), table["hair_color"].eq(bind_param("black"))], + ) + + common = WhereClause.new( + [table["id"].eq(bind_param(1))], + ) + + or_clause = WhereClause.new([table["name"].eq(bind_param("Sean"))]) + .or(WhereClause.new([table["hair_color"].eq(bind_param("black"))])) + + assert_equal common + or_clause, a.or(b) + end + + test "or can detect identical or as being a common condition" do + common_or = WhereClause.new([table["name"].eq(bind_param("Sean"))]) + .or(WhereClause.new([table["hair_color"].eq(bind_param("black"))])) + + a = common_or + WhereClause.new([table["id"].eq(bind_param(1))]) + b = common_or + WhereClause.new([table["foo"].eq(bind_param("bar"))]) + + new_or = WhereClause.new([table["id"].eq(bind_param(1))]) + .or(WhereClause.new([table["foo"].eq(bind_param("bar"))])) + + assert_equal common_or + new_or, a.or(b) + end + + test "or will use only common conditions if one side only has common conditions" do + only_common = WhereClause.new([ + table["id"].eq(bind_param(1)), + "foo = bar", + ]) + + common_with_extra = WhereClause.new([ + table["id"].eq(bind_param(1)), + "foo = bar", + table["extra"].eq(bind_param("pluto")), + ]) + + assert_equal only_common, only_common.or(common_with_extra) + assert_equal only_common, common_with_extra.or(only_common) + end + private def table Arel::Table.new("table") end - def bind_param - Arel::Nodes::BindParam.new - end - - def attribute(name, value) - ActiveRecord::Attribute.with_cast_value(name, value, ActiveRecord::Type::Value.new) + def bind_param(value) + Arel::Nodes::BindParam.new(value) end end end diff --git a/activerecord/test/cases/relation/where_test.rb b/activerecord/test/cases/relation/where_test.rb index cbc466d6b8..d95a54a2fe 100644 --- a/activerecord/test/cases/relation/where_test.rb +++ b/activerecord/test/cases/relation/where_test.rb @@ -1,3 +1,5 @@ +# frozen_string_literal: true + require "cases/helper" require "models/author" require "models/binary" @@ -15,7 +17,7 @@ require "models/vertex" module ActiveRecord class WhereTest < ActiveRecord::TestCase - fixtures :posts, :edges, :authors, :author_addresses, :binaries, :essays, :cars, :treasures, :price_estimates + fixtures :posts, :edges, :authors, :author_addresses, :binaries, :essays, :cars, :treasures, :price_estimates, :topics def test_where_copies_bind_params author = authors(:david) @@ -48,6 +50,10 @@ module ActiveRecord assert_equal [chef], chefs.to_a end + def test_where_with_casted_value_is_nil + assert_equal 4, Topic.where(last_read: "").count + end + def test_rewhere_on_root assert_equal posts(:welcome), Post.rewhere(title: "Welcome to the weblog").first end @@ -103,6 +109,15 @@ module ActiveRecord assert_equal expected.to_sql, actual.to_sql end + def test_polymorphic_shallow_where_not + treasure = treasures(:sapphire) + + expected = [price_estimates(:diamond), price_estimates(:honda)] + actual = PriceEstimate.where.not(estimate_of: treasure) + + assert_equal expected.sort_by(&:id), actual.sort_by(&:id) + end + def test_polymorphic_nested_array_where treasure = Treasure.new treasure.id = 1 @@ -115,13 +130,23 @@ module ActiveRecord assert_equal expected.to_sql, actual.to_sql end + def test_polymorphic_nested_array_where_not + treasure = treasures(:diamond) + car = cars(:honda) + + expected = [price_estimates(:sapphire_1), price_estimates(:sapphire_2)] + actual = PriceEstimate.where.not(estimate_of: [treasure, car]) + + assert_equal expected.sort_by(&:id), actual.sort_by(&:id) + end + def test_polymorphic_array_where_multiple_types treasure_1 = treasures(:diamond) treasure_2 = treasures(:sapphire) car = cars(:honda) expected = [price_estimates(:diamond), price_estimates(:sapphire_1), price_estimates(:sapphire_2), price_estimates(:honda)].sort - actual = PriceEstimate.where(estimate_of: [treasure_1, treasure_2, car]).to_a.sort + actual = PriceEstimate.where(estimate_of: [treasure_1, treasure_2, car]).to_a.sort assert_equal expected, actual end @@ -289,6 +314,20 @@ module ActiveRecord assert_equal essays(:david_modest_proposal), essay end + def test_where_with_relation_on_has_many_association + essay = essays(:david_modest_proposal) + author = Author.where(essays: Essay.where(id: essay.id)).first + + assert_equal authors(:david), author + end + + def test_where_with_relation_on_has_one_association + author = authors(:david) + author_address = AuthorAddress.where(author: Author.where(id: author.id)).first + assert_equal author_addresses(:david_address), author_address + end + + def test_where_on_association_with_select_relation essay = Essay.where(author: Author.where(name: "David").select(:name)).take assert_equal essays(:david_modest_proposal), essay |