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require 'helper'
module Arel
module Nodes
describe 'Case' do
describe '#initialize' do
it 'sets case expression from first argument' do
node = Case.new 'foo'
assert_equal 'foo', node.case
end
it 'sets default case from second argument' do
node = Case.new nil, 'bar'
assert_equal 'bar', node.default
end
end
describe '#clone' do
it 'clones case, conditions and default' do
foo = Nodes.build_quoted 'foo'
node = Case.new
node.case = foo
node.conditions = [When.new(foo, foo)]
node.default = foo
dolly = node.clone
assert_equal dolly.case, node.case
refute_same dolly.case, node.case
assert_equal dolly.conditions, node.conditions
refute_same dolly.conditions, node.conditions
assert_equal dolly.default, node.default
refute_same dolly.default, node.default
end
end
describe 'equality' do
it 'is equal with equal ivars' do
foo = Nodes.build_quoted 'foo'
one = Nodes.build_quoted 1
zero = Nodes.build_quoted 0
case1 = Case.new foo
case1.conditions = [When.new(foo, one)]
case1.default = Else.new zero
case2 = Case.new foo
case2.conditions = [When.new(foo, one)]
case2.default = Else.new zero
array = [case1, case2]
assert_equal 1, array.uniq.size
end
it 'is not equal with different ivars' do
foo = Nodes.build_quoted 'foo'
bar = Nodes.build_quoted 'bar'
one = Nodes.build_quoted 1
zero = Nodes.build_quoted 0
case1 = Case.new foo
case1.conditions = [When.new(foo, one)]
case1.default = Else.new zero
case2 = Case.new foo
case2.conditions = [When.new(bar, one)]
case2.default = Else.new zero
array = [case1, case2]
assert_equal 2, array.uniq.size
end
end
end
end
end
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