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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 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 = "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
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