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require 'helper'
describe Arel::Nodes::Over do
describe 'as' do
it 'should alias the expression' do
table = Arel::Table.new :users
table[:id].count.over.as('foo').to_sql.must_be_like %{
COUNT("users"."id") OVER () AS foo
}
end
end
describe 'with literal' do
it 'should reference the window definition by name' do
table = Arel::Table.new :users
table[:id].count.over('foo').to_sql.must_be_like %{
COUNT("users"."id") OVER "foo"
}
end
end
describe 'with SQL literal' do
it 'should reference the window definition by name' do
table = Arel::Table.new :users
table[:id].count.over(Arel.sql('foo')).to_sql.must_be_like %{
COUNT("users"."id") OVER foo
}
end
end
describe 'with no expression' do
it 'should use empty definition' do
table = Arel::Table.new :users
table[:id].count.over.to_sql.must_be_like %{
COUNT("users"."id") OVER ()
}
end
end
describe 'with expression' do
it 'should use definition in sub-expression' do
table = Arel::Table.new :users
window = Arel::Nodes::Window.new.order(table['foo'])
table[:id].count.over(window).to_sql.must_be_like %{
COUNT("users"."id") OVER (ORDER BY \"users\".\"foo\")
}
end
end
describe 'equality' do
it 'is equal with equal ivars' do
array = [
Arel::Nodes::Over.new('foo', 'bar'),
Arel::Nodes::Over.new('foo', 'bar')
]
assert_equal 1, array.uniq.size
end
it 'is not equal with different ivars' do
array = [
Arel::Nodes::Over.new('foo', 'bar'),
Arel::Nodes::Over.new('foo', 'baz')
]
assert_equal 2, array.uniq.size
end
end
end
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