JezK
Edit File: test_to_sql.rb
require 'helper' module Arel module Visitors describe 'the to_sql visitor' do before do @visitor = ToSql.new Table.engine @attr = Table.new(:users)[:id] end it "should be thread safe around usage of last_column" do table = Table.new(:users) visit_integer_column = Thread.new do Thread.stop @visitor.send(:visit_Arel_Attributes_Attribute, @attr) end @visitor.accept(table[:name]) assert_equal(:string, @visitor.send(:last_column).type) visit_integer_column.run visit_integer_column.join assert_equal(:string, @visitor.send(:last_column).type) end describe 'equality' do it 'should handle false' do sql = @visitor.accept Nodes::Equality.new(false, false) sql.must_be_like %{ 'f' = 'f' } end it 'should use the column to quote' do table = Table.new(:users) sql = @visitor.accept Nodes::Equality.new(table[:id], '1-fooo') sql.must_be_like %{ "users"."id" = 1 } end end it "should visit string subclass" do @visitor.accept(Class.new(String).new(":'(")) @visitor.accept(Class.new(Class.new(String)).new(":'(")) end it "should visit_Class" do @visitor.accept(DateTime).must_equal "'DateTime'" end it "should escape LIMIT" do sc = Arel::Nodes::SelectStatement.new sc.limit = Arel::Nodes::Limit.new("omg") assert_match(/LIMIT 'omg'/, @visitor.accept(sc)) end it "should visit_DateTime" do @visitor.accept DateTime.now end it "should visit_Float" do @visitor.accept 2.14 end it "should visit_Not" do sql = @visitor.accept Nodes::Not.new(Arel.sql("foo")) sql.must_be_like "NOT (foo)" end it "should apply Not to the whole expression" do node = Nodes::And.new @attr.eq(10), @attr.eq(11) sql = @visitor.accept Nodes::Not.new(node) sql.must_be_like %{NOT ("users"."id" = 10 AND "users"."id" = 11)} end it "should visit_As" do as = Nodes::As.new(Arel.sql("foo"), Arel.sql("bar")) sql = @visitor.accept as sql.must_be_like "foo AS bar" end it "should visit_Bignum" do @visitor.accept 8787878092 end it "should visit_Hash" do @visitor.accept({:a => 1}) end it "should visit_BigDecimal" do @visitor.accept BigDecimal.new('2.14') end it "should visit_Date" do @visitor.accept Date.today end it "should visit_NilClass" do @visitor.accept(nil).must_be_like "NULL" end it "should visit_Arel_Nodes_And" do node = Nodes::And.new @attr.eq(10), @attr.eq(11) @visitor.accept(node).must_be_like %{ "users"."id" = 10 AND "users"."id" = 11 } end it "should visit_Arel_Nodes_Or" do node = Nodes::Or.new @attr.eq(10), @attr.eq(11) @visitor.accept(node).must_be_like %{ "users"."id" = 10 OR "users"."id" = 11 } end it "should visit visit_Arel_Attributes_Time" do attr = Attributes::Time.new(@attr.relation, @attr.name, @attr.column) @visitor.accept attr end it "should visit_TrueClass" do test = Table.new(:users)[:bool].eq(true) @visitor.accept(test).must_be_like %{ "users"."bool" = 't' } end describe "Nodes::Ordering" do it "should know how to visit" do node = @attr.desc @visitor.accept(node).must_be_like %{ "users"."id" DESC } end end describe "Nodes::In" do it "should know how to visit" do node = @attr.in [1, 2, 3] @visitor.accept(node).must_be_like %{ "users"."id" IN (1, 2, 3) } end it "should turn empty right to NULL" do node = @attr.in [] @visitor.accept(node).must_be_like %{ "users"."id" IN (NULL) } end it 'can handle two dot ranges' do node = @attr.in 1..3 @visitor.accept(node).must_be_like %{ "users"."id" BETWEEN 1 AND 3 } end it 'can handle three dot ranges' do node = @attr.in 1...3 @visitor.accept(node).must_be_like %{ "users"."id" >= 1 AND "users"."id" < 3 } end it 'can handle subqueries' do table = Table.new(:users) subquery = table.project(:id).where(table[:name].eq('Aaron')) node = @attr.in subquery @visitor.accept(node).must_be_like %{ "users"."id" IN (SELECT id FROM "users" WHERE "users"."name" = 'Aaron') } end it 'uses the same column for escaping values' do @attr = Table.new(:users)[:name] visitor = Class.new(ToSql) do attr_accessor :expected def quote value, column = nil raise unless column == expected super end end in_node = Nodes::In.new @attr, %w{ a b c } visitor = visitor.new(Table.engine) visitor.expected = @attr.column visitor.accept(in_node).must_equal %("users"."name" IN ('a', 'b', 'c')) end end describe "Nodes::NotIn" do it "should know how to visit" do node = @attr.not_in [1, 2, 3] @visitor.accept(node).must_be_like %{ "users"."id" NOT IN (1, 2, 3) } end it "should turn empty right to NULL" do node = @attr.not_in [] @visitor.accept(node).must_be_like %{ "users"."id" NOT IN (NULL) } end it 'can handle two dot ranges' do node = @attr.not_in 1..3 @visitor.accept(node).must_be_like %{ "users"."id" < 1 OR "users"."id" > 3 } end it 'can handle three dot ranges' do node = @attr.not_in 1...3 @visitor.accept(node).must_be_like %{ "users"."id" < 1 OR "users"."id" >= 3 } end it 'can handle subqueries' do table = Table.new(:users) subquery = table.project(:id).where(table[:name].eq('Aaron')) node = @attr.not_in subquery @visitor.accept(node).must_be_like %{ "users"."id" NOT IN (SELECT id FROM "users" WHERE "users"."name" = 'Aaron') } end it 'uses the same column for escaping values' do @attr = Table.new(:users)[:name] visitor = Class.new(ToSql) do attr_accessor :expected def quote value, column = nil raise unless column == expected super end end in_node = Nodes::NotIn.new @attr, %w{ a b c } visitor = visitor.new(Table.engine) visitor.expected = @attr.column visitor.accept(in_node).must_equal %("users"."name" NOT IN ('a', 'b', 'c')) end end describe 'Equality' do it "should escape strings" do test = Table.new(:users)[:name].eq 'Aaron Patterson' @visitor.accept(test).must_be_like %{ "users"."name" = 'Aaron Patterson' } end end end end end