From 139f4cb8694e890094758337c9c842a1c0b7e0e1 Mon Sep 17 00:00:00 2001
From: Jay Ohms <jay@37signals.com>
Date: Tue, 17 Mar 2026 10:12:56 -0400
Subject: [PATCH] Add test coverage for native bridge user agents

---
 test/models/application_platform_test.rb | 41 ++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 test/models/application_platform_test.rb

diff --git a/test/models/application_platform_test.rb b/test/models/application_platform_test.rb
new file mode 100644
index 000000000..597fd714b
--- /dev/null
+++ b/test/models/application_platform_test.rb
@@ -0,0 +1,41 @@
+require "test_helper"
+
+class ApplicationPlatformTest < ActiveSupport::TestCase
+  NATIVE_ANDROID_UA = "Mozilla/5.0 (Linux; Android 14; Pixel 8) AppleWebKit/537.36 (KHTML, like Gecko) Hotwire Native Android/1.0 bridge-components: [buttons overflow-menu form]"
+  NATIVE_IOS_UA = "Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Hotwire Native iOS/1.0 bridge-components: [title]"
+  MOBILE_WEB_IOS_UA = "Mozilla/5.0 (iPhone; CPU iPhone OS 17_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.0 Mobile/15E148 Safari/604.1"
+  DESKTOP_WEB_UA = "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36"
+  NATIVE_WITHOUT_COMPONENTS_UA = "Mozilla/5.0 (Linux; Android 14; Pixel 8) AppleWebKit/537.36 (KHTML, like Gecko) Hotwire Native Android/1.0"
+
+  test "bridge_name returns android for native android user agents" do
+    assert_equal :android, platform_for(NATIVE_ANDROID_UA).bridge_name
+  end
+
+  test "bridge_name returns ios for native ios user agents" do
+    assert_equal :ios, platform_for(NATIVE_IOS_UA).bridge_name
+  end
+
+  test "bridge_name is nil for non-native user agents" do
+    assert_nil platform_for(MOBILE_WEB_IOS_UA).bridge_name
+    assert_nil platform_for(DESKTOP_WEB_UA).bridge_name
+  end
+
+  test "bridge_components returns extracted components for native user agents" do
+    assert_equal "buttons overflow-menu form", platform_for(NATIVE_ANDROID_UA).bridge_components
+    assert_equal "title", platform_for(NATIVE_IOS_UA).bridge_components
+  end
+
+  test "bridge_components is blank for non-native user agents" do
+    assert_equal "", platform_for(MOBILE_WEB_IOS_UA).bridge_components
+    assert_equal "", platform_for(DESKTOP_WEB_UA).bridge_components
+  end
+
+  test "bridge_components is blank when native user agent does not include bridge-components metadata" do
+    assert_equal "", platform_for(NATIVE_WITHOUT_COMPONENTS_UA).bridge_components
+  end
+
+  private
+    def platform_for(user_agent)
+      ApplicationPlatform.new(user_agent)
+    end
+end