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require 'helper'
module Arel
module Visitors
describe 'the oracle12 visitor' do
before do
@visitor = Oracle12.new Table.engine.connection
@table = Table.new(:users)
end
def compile node
@visitor.accept(node, Collectors::SQLString.new).value
end
it 'modified except to be minus' do
left = Nodes::SqlLiteral.new("SELECT * FROM users WHERE age > 10")
right = Nodes::SqlLiteral.new("SELECT * FROM users WHERE age > 20")
sql = compile Nodes::Except.new(left, right)
sql.must_be_like %{
( SELECT * FROM users WHERE age > 10 MINUS SELECT * FROM users WHERE age > 20 )
}
end
it 'generates select options offset then limit' do
stmt = Nodes::SelectStatement.new
stmt.offset = Nodes::Offset.new(1)
stmt.limit = Nodes::Limit.new(10)
sql = compile(stmt)
sql.must_be_like "SELECT OFFSET 1 ROWS FETCH FIRST 10 ROWS ONLY"
end
describe 'locking' do
it 'generates ArgumentError if limit and lock are used' do
stmt = Nodes::SelectStatement.new
stmt.limit = Nodes::Limit.new(10)
stmt.lock = Nodes::Lock.new(Arel.sql('FOR UPDATE'))
assert_raises ArgumentError do
sql = compile(stmt)
end
end
it 'defaults to FOR UPDATE when locking' do
node = Nodes::Lock.new(Arel.sql('FOR UPDATE'))
compile(node).must_be_like "FOR UPDATE"
end
end
describe "Nodes::BindParam" do
it "increments each bind param" do
query = @table[:name].eq(Arel::Nodes::BindParam.new)
.and(@table[:id].eq(Arel::Nodes::BindParam.new))
compile(query).must_be_like %{
"users"."name" = :a1 AND "users"."id" = :a2
}
end
end
end
end
end
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