Cover Retry-After parsing directly

Delta-seconds, numerics, HTTP-dates (past dates clamp to zero),
unparseable values reading as nil, and the message falling back to the
reason token.

Author: jeremy

test/lib/action_push_native/errors_test.rb

@@ -0,0 +1,29 @@
+require "test_helper"
+
+module ActionPushNative
+  class ErrorsTest < ActiveSupport::TestCase
+    test "retry_after accepts delta-seconds, numerics, and nil" do
+      assert_equal 30, TooManyRequestsError.new(retry_after: "30").retry_after
+      assert_equal 2.5, TooManyRequestsError.new(retry_after: 2.5).retry_after
+      assert_nil TooManyRequestsError.new.retry_after
+    end
+
+    test "retry_after accepts an HTTP-date, clamping past dates to zero" do
+      freeze_time do
+        error = ServiceUnavailableError.new(retry_after: 42.seconds.from_now.httpdate)
+        assert_in_delta 42.0, error.retry_after, 1.0
+
+        assert_equal 0.0, ServiceUnavailableError.new(retry_after: 1.hour.ago.httpdate).retry_after
+      end
+    end
+
+    test "an unparseable Retry-After reads as nil" do
+      assert_nil TooManyRequestsError.new(retry_after: "soon").retry_after
+    end
+
+    test "the message stays the first positional argument, falling back to the reason" do
+      assert_equal "boom", TooManyRequestsError.new("boom", reason: "QUOTA_EXCEEDED").message
+      assert_equal "QUOTA_EXCEEDED", TooManyRequestsError.new(reason: "QUOTA_EXCEEDED").message
+    end
+  end
+end