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42 lines
1.1 KiB
Ruby
42 lines
1.1 KiB
Ruby
require 'helper'
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module Arel
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module Visitors
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describe 'the informix visitor' do
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before do
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@visitor = Informix.new Table.engine.connection
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end
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it 'uses LIMIT n to limit results' do
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stmt = Nodes::SelectStatement.new
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stmt.limit = Nodes::Limit.new(1)
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sql = @visitor.accept(stmt)
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sql.must_be_like "SELECT LIMIT 1"
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end
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it 'uses LIMIT n in updates with a limit' do
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stmt = Nodes::UpdateStatement.new
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stmt.limit = Nodes::Limit.new(1)
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stmt.key = 'id'
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sql = @visitor.accept(stmt)
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sql.must_be_like "UPDATE NULL WHERE 'id' IN (SELECT LIMIT 1 'id')"
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end
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it 'uses SKIP n to jump results' do
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stmt = Nodes::SelectStatement.new
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stmt.offset = Nodes::Offset.new(10)
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sql = @visitor.accept(stmt)
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sql.must_be_like "SELECT SKIP 10"
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end
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it 'uses SKIP before LIMIT' do
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stmt = Nodes::SelectStatement.new
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stmt.limit = Nodes::Limit.new(1)
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stmt.offset = Nodes::Offset.new(1)
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sql = @visitor.accept(stmt)
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sql.must_be_like "SELECT SKIP 1 LIMIT 1"
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end
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end
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end
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end
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