All requests from ToggleSwitch are being made with a Turbo Accept h…

…eader (#3012)

.changeset/quick-falcons-cheat.md

@@ -0,0 +1,6 @@
+---
+"@primer/view-components": patch
+---
+
+Fix a bug where all requests from the `ToggleSwitch` view component are being made with a Turbo Accept header.
+This started happening after the change in #2964 because `data-turbo=false` gets interpreted as a truthy value.

app/components/primer/alpha/toggle_switch.rb

@@ -84,8 +84,9 @@ def before_render
 
         @system_arguments[:data] = merge_data(
           @system_arguments,
-          { data: { csrf: @csrf_token, turbo: @turbo } }
+          { data: { csrf: @csrf_token } }
         )
+        @system_arguments[:data][:turbo] = true if @turbo
       end
     end
   end

test/components/alpha/toggle_switch_test.rb

@@ -69,6 +69,12 @@ def test_csrf_token
         assert_selector("[data-csrf]")
       end
 
+      def test_turbo_default
+        render_inline(Primer::Alpha::ToggleSwitch.new(src: "/foo"))
+
+        refute_selector("[data-turbo]")
+      end
+
       def test_turbo
         render_inline(Primer::Alpha::ToggleSwitch.new(src: "/foo", turbo: true))
 

test/system/alpha/toggle_switch_test.rb

@@ -100,7 +100,17 @@ def test_fetch_made_with_turbo
       assert_equal "text/vnd.turbo-stream.html", ToggleSwitchController.last_request.headers["HTTP_ACCEPT"]
     end
 
+    def test_fetch_made_without_turbo
+      visit_preview(:default)
+
+      refute_selector(".ToggleSwitch--checked")
+      find("toggle-switch").click
+      assert_selector(".ToggleSwitch--checked")
+
+      wait_for_request
 
+      assert_equal "*/*", ToggleSwitchController.last_request.headers["HTTP_ACCEPT"]
+    end
 
     private