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require 'abstract_unit'
require 'action_dispatch/http/upload'
require 'action_controller/metal/strong_parameters'
class ParametersPermitTest < ActiveSupport::TestCase
def assert_filtered_out(params, key)
assert !params.has_key?(key), "key #{key.inspect} has not been filtered out"
end
setup do
@params = ActionController::Parameters.new({ person: {
age: "32", name: { first: "David", last: "Heinemeier Hansson" }
}})
@struct_fields = []
%w(0 1 12).each do |number|
['', 'i', 'f'].each do |suffix|
@struct_fields << "sf(#{number}#{suffix})"
end
end
end
test 'if nothing is permitted, the hash becomes empty' do
params = ActionController::Parameters.new(id: '1234')
permitted = params.permit
assert permitted.permitted?
assert permitted.empty?
end
test 'key: permitted scalar values' do
values = ['a', :a, nil]
values += [0, 1.0, 2**128, BigDecimal.new(1)]
values += [true, false]
values += [Date.today, Time.now, DateTime.now]
values += [STDOUT, StringIO.new, ActionDispatch::Http::UploadedFile.new(tempfile: __FILE__),
Rack::Test::UploadedFile.new(__FILE__)]
values.each do |value|
params = ActionController::Parameters.new(id: value)
permitted = params.permit(:id)
assert_equal value, permitted[:id]
@struct_fields.each do |sf|
params = ActionController::Parameters.new(sf => value)
permitted = params.permit(:sf)
assert_equal value, permitted[sf]
end
end
end
test 'key: unknown keys are filtered out' do
params = ActionController::Parameters.new(id: '1234', injected: 'injected')
permitted = params.permit(:id)
assert_equal '1234', permitted[:id]
assert_filtered_out permitted, :injected
end
test 'key: arrays are filtered out' do
[[], [1], ['1']].each do |array|
params = ActionController::Parameters.new(id: array)
permitted = params.permit(:id)
assert_filtered_out permitted, :id
@struct_fields.each do |sf|
params = ActionController::Parameters.new(sf => array)
permitted = params.permit(:sf)
assert_filtered_out permitted, sf
end
end
end
test 'key: hashes are filtered out' do
[{}, {foo: 1}, {foo: 'bar'}].each do |hash|
params = ActionController::Parameters.new(id: hash)
permitted = params.permit(:id)
assert_filtered_out permitted, :id
@struct_fields.each do |sf|
params = ActionController::Parameters.new(sf => hash)
permitted = params.permit(:sf)
assert_filtered_out permitted, sf
end
end
end
test 'key: non-permitted scalar values are filtered out' do
params = ActionController::Parameters.new(id: Object.new)
permitted = params.permit(:id)
assert_filtered_out permitted, :id
@struct_fields.each do |sf|
params = ActionController::Parameters.new(sf => Object.new)
permitted = params.permit(:sf)
assert_filtered_out permitted, sf
end
end
test 'key: it is not assigned if not present in params' do
params = ActionController::Parameters.new(name: 'Joe')
permitted = params.permit(:id)
assert !permitted.has_key?(:id)
end
test 'key to empty array: empty arrays pass' do
params = ActionController::Parameters.new(id: [])
permitted = params.permit(id: [])
assert_equal [], permitted[:id]
end
test 'do not break params filtering on nil values' do
params = ActionController::Parameters.new(a: 1, b: [1, 2, 3], c: nil)
permitted = params.permit(:a, c: [], b: [])
assert_equal 1, permitted[:a]
assert_equal [1, 2, 3], permitted[:b]
assert_equal nil, permitted[:c]
end
test 'key to empty array: arrays of permitted scalars pass' do
[['foo'], [1], ['foo', 'bar'], [1, 2, 3]].each do |array|
params = ActionController::Parameters.new(id: array)
permitted = params.permit(id: [])
assert_equal array, permitted[:id]
end
end
test 'key to empty array: permitted scalar values do not pass' do
['foo', 1].each do |permitted_scalar|
params = ActionController::Parameters.new(id: permitted_scalar)
permitted = params.permit(id: [])
assert_filtered_out permitted, :id
end
end
test 'key to empty array: arrays of non-permitted scalar do not pass' do
[[Object.new], [[]], [[1]], [{}], [{id: '1'}]].each do |non_permitted_scalar|
params = ActionController::Parameters.new(id: non_permitted_scalar)
permitted = params.permit(id: [])
assert_filtered_out permitted, :id
end
end
test "fetch raises ParameterMissing exception" do
e = assert_raises(ActionController::ParameterMissing) do
@params.fetch :foo
end
assert_equal :foo, e.param
end
test "fetch with a default value of a hash does not mutate the object" do
params = ActionController::Parameters.new({})
params.fetch :foo, {}
assert_equal nil, params[:foo]
end
test "fetch doesnt raise ParameterMissing exception if there is a default" do
assert_equal "monkey", @params.fetch(:foo, "monkey")
assert_equal "monkey", @params.fetch(:foo) { "monkey" }
end
test "not permitted is sticky on accessors" do
assert !@params.slice(:person).permitted?
assert !@params[:person][:name].permitted?
assert !@params[:person].except(:name).permitted?
@params.each { |key, value| assert(!value.permitted?) if key == "person" }
assert !@params.fetch(:person).permitted?
assert !@params.values_at(:person).first.permitted?
end
test "permitted is sticky on accessors" do
@params.permit!
assert @params.slice(:person).permitted?
assert @params[:person][:name].permitted?
assert @params[:person].except(:name).permitted?
@params.each { |key, value| assert(value.permitted?) if key == "person" }
assert @params.fetch(:person).permitted?
assert @params.values_at(:person).first.permitted?
end
test "not permitted is sticky on mutators" do
assert !@params.delete_if { |k| k == "person" }.permitted?
assert !@params.keep_if { |k,v| k == "person" }.permitted?
end
test "permitted is sticky on mutators" do
@params.permit!
assert @params.delete_if { |k| k == "person" }.permitted?
assert @params.keep_if { |k,v| k == "person" }.permitted?
end
test "not permitted is sticky beyond merges" do
assert !@params.merge(a: "b").permitted?
end
test "permitted is sticky beyond merges" do
@params.permit!
assert @params.merge(a: "b").permitted?
end
test "modifying the parameters" do
@params[:person][:hometown] = "Chicago"
@params[:person][:family] = { brother: "Jonas" }
assert_equal "Chicago", @params[:person][:hometown]
assert_equal "Jonas", @params[:person][:family][:brother]
end
test "permit state is kept on a dup" do
@params.permit!
assert_equal @params.permitted?, @params.dup.permitted?
end
test "permit is recursive" do
@params.permit!
assert @params.permitted?
assert @params[:person].permitted?
assert @params[:person][:name].permitted?
end
test "permitted takes a default value when Parameters.permit_all_parameters is set" do
begin
ActionController::Parameters.permit_all_parameters = true
params = ActionController::Parameters.new({ person: {
age: "32", name: { first: "David", last: "Heinemeier Hansson" }
}})
assert params.slice(:person).permitted?
assert params[:person][:name].permitted?
ensure
ActionController::Parameters.permit_all_parameters = false
end
end
test "permitting parameters as an array" do
assert_equal "32", @params[:person].permit([ :age ])[:age]
end
end
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