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require "abstract_unit"
class UrlEncodedParamsParsingTest < ActionDispatch::IntegrationTest
class TestController < ActionController::Base
class << self
attr_accessor :last_request_parameters, :last_request_type
end
def parse
self.class.last_request_parameters = request.request_parameters
head :ok
end
end
def teardown
TestController.last_request_parameters = nil
end
test "parses unbalanced query string with array" do
query = "location[]=1&location[]=2&age_group[]=2"
expected = { "location" => ["1", "2"], "age_group" => ["2"] }
assert_parses expected, query
end
test "parses nested hash" do
query = [
"note[viewers][viewer][][type]=User",
"note[viewers][viewer][][id]=1",
"note[viewers][viewer][][type]=Group",
"note[viewers][viewer][][id]=2"
].join("&")
expected = {
"note" => {
"viewers" => {
"viewer" => [
{ "id" => "1", "type" => "User" },
{ "type" => "Group", "id" => "2" }
]
}
}
}
assert_parses expected, query
end
test "parses more complex nesting" do
query = [
"customers[boston][first][name]=David",
"customers[boston][first][url]=http://David",
"customers[boston][second][name]=Allan",
"customers[boston][second][url]=http://Allan",
"something_else=blah",
"something_nil=",
"something_empty=",
"products[first]=Apple Computer",
"products[second]=Pc",
"=Save"
].join("&")
expected = {
"customers" => {
"boston" => {
"first" => {
"name" => "David",
"url" => "http://David"
},
"second" => {
"name" => "Allan",
"url" => "http://Allan"
}
}
},
"something_else" => "blah",
"something_empty" => "",
"something_nil" => "",
"products" => {
"first" => "Apple Computer",
"second" => "Pc"
}
}
assert_parses expected, query
end
test "parses params with array" do
query = "selected[]=1&selected[]=2&selected[]=3"
expected = { "selected" => ["1", "2", "3"] }
assert_parses expected, query
end
test "parses params with nil key" do
query = "=&test2=value1"
expected = { "test2" => "value1" }
assert_parses expected, query
end
test "parses params with array prefix and hashes" do
query = "a[][b][c]=d"
expected = { "a" => [{ "b" => { "c" => "d" } }] }
assert_parses expected, query
end
test "parses params with complex nesting" do
query = "a[][b][c][][d][]=e"
expected = { "a" => [{ "b" => { "c" => [{ "d" => ["e"] }] } }] }
assert_parses expected, query
end
test "parses params with file path" do
query = [
"customers[boston][first][name]=David",
"something_else=blah",
"logo=#{File.expand_path(__FILE__)}"
].join("&")
expected = {
"customers" => {
"boston" => {
"first" => {
"name" => "David"
}
}
},
"something_else" => "blah",
"logo" => File.expand_path(__FILE__),
}
assert_parses expected, query
end
test "parses params with Safari 2 trailing null character" do
query = "selected[]=1&selected[]=2&selected[]=3\0"
expected = { "selected" => ["1", "2", "3"] }
assert_parses expected, query
end
test "ambiguous params returns a bad request" do
with_test_routing do
post "/parse", params: "foo[]=bar&foo[4]=bar"
assert_response :bad_request
end
end
private
def with_test_routing
with_routing do |set|
set.draw do
ActiveSupport::Deprecation.silence do
post ":action", to: ::UrlEncodedParamsParsingTest::TestController
end
end
yield
end
end
def assert_parses(expected, actual)
with_test_routing do
post "/parse", params: actual
assert_response :ok
assert_equal expected, TestController.last_request_parameters
assert_utf8 TestController.last_request_parameters
end
end
def assert_utf8(object)
correct_encoding = Encoding.default_internal
unless object.is_a?(Hash)
assert_equal correct_encoding, object.encoding, "#{object.inspect} should have been UTF-8"
return
end
object.each_value do |v|
case v
when Hash
assert_utf8 v
when Array
v.each { |el| assert_utf8 el }
else
assert_utf8 v
end
end
end
end
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