Tighten up AJ::Arguments and its tests

* Disallow deserialization of non-primitive objects
* Broaden coverage; remove superfluous tests

1 files changed, 76 insertions, 0 deletions

diff --git a/activejob/test/cases/argument_serialization_test.rb b/activejob/test/cases/argument_serialization_test.rb
new file mode 100644
index 0000000000..5a46c5cdef
--- /dev/null
+++ b/activejob/test/cases/argument_serialization_test.rb
@@ -0,0 +1,76 @@
+require 'helper'
+require 'active_job/arguments'
+require 'models/person'
+require 'active_support/core_ext/hash/indifferent_access'
+
+class ArgumentSerializationTest < ActiveSupport::TestCase
+  setup do
+    @person = Person.find('5')
+  end
+
+  [ nil, 1, 1.0, 1_000_000_000_000_000_000_000,
+    'a', true, false,
+    [ 1, 'a' ],
+    { 'a' => 1 }
+  ].each do |arg|
+    test "serializes #{arg.class} verbatim" do
+      assert_arguments_unchanged arg
+    end
+  end
+
+  [ :a, Object.new, self, Person.find('5').to_gid ].each do |arg|
+    test "does not serialize #{arg.class}" do
+      assert_raises ActiveJob::SerializationError do
+        ActiveJob::Arguments.serialize [ arg ]
+      end
+
+      assert_raises ActiveJob::DeserializationError do
+        ActiveJob::Arguments.deserialize [ arg ]
+      end
+    end
+  end
+
+  test 'should convert records to Global IDs' do
+    assert_arguments_roundtrip [@person], [@person.to_gid.to_s]
+  end
+
+  test 'should dive deep into arrays and hashes' do
+    assert_arguments_roundtrip [3, [@person]], [3, [@person.to_gid.to_s]]
+    assert_arguments_roundtrip [{ 'a' => @person }], [{ 'a' => @person.to_gid.to_s }.with_indifferent_access]
+  end
+
+  test 'should stringify symbol hash keys' do
+    assert_equal [ 'a' => 1 ], ActiveJob::Arguments.serialize([ a: 1 ])
+  end
+
+  test 'should disallow non-string/symbol hash keys' do
+    assert_raises ActiveJob::SerializationError do
+      ActiveJob::Arguments.serialize [ { 1 => 2 } ]
+    end
+
+    assert_raises ActiveJob::SerializationError do
+      ActiveJob::Arguments.serialize [ { :a => [{ 2 => 3 }] } ]
+    end
+  end
+
+  test 'should not allow non-primitive objects' do
+    assert_raises ActiveJob::SerializationError do
+      ActiveJob::Arguments.serialize [Object.new]
+    end
+
+    assert_raises ActiveJob::SerializationError do
+      ActiveJob::Arguments.serialize [1, [Object.new]]
+    end
+  end
+
+  private
+    def assert_arguments_unchanged(*args)
+      assert_arguments_roundtrip args, args
+    end
+
+    def assert_arguments_roundtrip(args, expected_serialized_args)
+      serialized = ActiveJob::Arguments.serialize(args)
+      assert_equal expected_serialized_args, serialized
+      assert_equal args, ActiveJob::Arguments.deserialize(serialized)
+    end
+end