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# frozen_string_literal: true
require_relative "../helper"
module Arel
module Nodes
class NodesTest < Arel::Spec
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
assert_not_same dolly.case, node.case
assert_equal dolly.conditions, node.conditions
assert_not_same dolly.conditions, node.conditions
assert_equal dolly.default, node.default
assert_not_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
describe "#as" do
it "allows aliasing" do
node = Case.new "foo"
as = node.as("bar")
assert_equal node, as.left
assert_kind_of Arel::Nodes::SqlLiteral, as.right
end
end
end
end
end
end
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