1 files changed, 93 insertions, 0 deletions
diff --git a/activesupport/test/metadata/shared_metadata_tests.rb b/activesupport/test/metadata/shared_metadata_tests.rb
new file mode 100644
index 0000000000..08bb0c648e
--- /dev/null
+++ b/activesupport/test/metadata/shared_metadata_tests.rb
@@ -0,0 +1,93 @@
+# frozen_string_literal: true
+
+module SharedMessageMetadataTests
+  def teardown
+    travel_back
+    super
+  end
+
+  def null_serializing?
+    false
+  end
+
+  def test_encryption_and_decryption_with_same_purpose
+    assert_equal data, parse(generate(data, purpose: "checkout"), purpose: "checkout")
+    assert_equal data, parse(generate(data))
+
+    string_message = "address: #23, main street"
+    assert_equal string_message, parse(generate(string_message, purpose: "shipping"), purpose: "shipping")
+  end
+
+  def test_verifies_array_when_purpose_matches
+    unless null_serializing?
+      data = [ "credit_card_no: 5012-6748-9087-5678", { "card_holder" => "Donald", "issued_on" => Time.local(2017) }, 12345 ]
+      assert_equal data, parse(generate(data, purpose: :registration), purpose: :registration)
+    end
+  end
+
+  def test_encryption_and_decryption_with_different_purposes_returns_nil
+    assert_nil parse(generate(data, purpose: "payment"), purpose: "sign up")
+    assert_nil parse(generate(data, purpose: "payment"))
+    assert_nil parse(generate(data), purpose: "sign up")
+  end
+
+  def test_purpose_using_symbols
+    assert_equal data, parse(generate(data, purpose: :checkout), purpose: :checkout)
+    assert_equal data, parse(generate(data, purpose: :checkout), purpose: "checkout")
+    assert_equal data, parse(generate(data, purpose: "checkout"), purpose: :checkout)
+  end
+
+  def test_passing_expires_at_sets_expiration_date
+    encrypted_message = generate(data, expires_at: 1.hour.from_now)
+
+    travel 59.minutes
+    assert_equal data, parse(encrypted_message)
+
+    travel 2.minutes
+    assert_nil parse(encrypted_message)
+  end
+
+  def test_set_relative_expiration_date_by_passing_expires_in
+    encrypted_message = generate(data, expires_in: 2.hours)
+
+    travel 1.hour
+    assert_equal data, parse(encrypted_message)
+
+    travel 1.hour + 1.second
+    assert_nil parse(encrypted_message)
+  end
+
+  def test_passing_expires_in_less_than_a_second_is_not_expired
+    freeze_time do
+      encrypted_message = generate(data, expires_in: 1.second)
+
+      travel 0.5.seconds
+      assert_equal data, parse(encrypted_message)
+
+      travel 1.second
+      assert_nil parse(encrypted_message)
+    end
+  end
+
+  def test_favor_expires_at_over_expires_in
+    payment_related_message = generate(data, purpose: "payment", expires_at: 2.year.from_now, expires_in: 1.second)
+
+    travel 1.year
+    assert_equal data, parse(payment_related_message, purpose: :payment)
+
+    travel 1.year + 1.day
+    assert_nil parse(payment_related_message, purpose: "payment")
+  end
+
+  def test_skip_expires_at_and_expires_in_to_disable_expiration_check
+    payment_related_message = generate(data, purpose: "payment")
+
+    travel 100.years
+    assert_equal data, parse(payment_related_message, purpose: "payment")
+  end
+
+  private
+    def data
+      { "credit_card_no" => "5012-6784-9087-5678", "card_holder" => { "name" => "Donald" } }
+    end
+end