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34 lines
921 B
Ruby
34 lines
921 B
Ruby
require 'helper'
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module Arel
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module Visitors
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describe 'the mysql visitor' do
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before do
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@visitor = MySQL.new Table.engine
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end
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###
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# :'(
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# http://dev.mysql.com/doc/refman/5.0/en/select.html#id3482214
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it 'defaults limit to 18446744073709551615' do
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stmt = Nodes::SelectStatement.new
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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 FROM DUAL LIMIT 18446744073709551615 OFFSET 1"
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end
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it 'uses DUAL for empty from' do
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stmt = Nodes::SelectStatement.new
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sql = @visitor.accept(stmt)
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sql.must_be_like "SELECT FROM DUAL"
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end
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it 'uses FOR UPDATE when locking' do
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stmt = Nodes::SelectStatement.new
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stmt.lock = Nodes::Lock.new
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sql = @visitor.accept(stmt)
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sql.must_be_like "SELECT FROM DUAL FOR UPDATE"
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end
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end
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end
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end
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