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 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_DateTime" do @visitor.accept DateTime.now end it "should visit_Float" do @visitor.accept 2.14 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_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 = @attr.eq(true) test.left.column.type = :boolean @visitor.accept(test).must_be_like %{ "users"."id" = '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 'uses the same column for escaping values' do 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"."id" IN ('a', 'b', 'c')) end end describe 'Equality' do it "should escape strings" do test = @attr.eq 'Aaron Patterson' test.left.column.type = :string @visitor.accept(test).must_be_like %{ "users"."id" = 'Aaron Patterson' } end end end end end