fix: preserve code from keyboard events (#2434)

Fixes #2433

Author: nbonamy

src/createDomEvent.ts

@@ -110,7 +110,7 @@ function getEventProperties(eventParams: EventParams) {
     cancelable: meta.cancelable,
     // Any derived options should go here
     keyCode,
-    code: keyCode,
+    code: options.code || keyCode,
     // if we have a `key`, use it, otherwise dont set anything (allows user to pass custom key)
     ...(keyModifiers[0] ? { key: keyModifiers[0] } : {})
   }

tests/trigger.spec.ts

@@ -225,6 +225,21 @@ describe('trigger', () => {
       expect(keydownHandler.mock.calls[0][0].keyCode).toBe(65)
     })
 
+    it('causes keydown handler to fire with the appropriate code when wrapper.trigger("keydown", { code: "Space" }) is fired', async () => {
+      const keydownHandler = vi.fn()
+      const Component = {
+        template: '<input @keydown="keydownHandler" />',
+        methods: { keydownHandler }
+      }
+      const wrapper = mount(Component, {})
+      await wrapper.trigger('keydown', { code: 'Space', key: ' ', keyCode: 32 })
+
+      expect(keydownHandler).toHaveBeenCalledTimes(1)
+      expect(keydownHandler.mock.calls[0][0].key).toBe(' ')
+      expect(keydownHandler.mock.calls[0][0].code).toBe('Space')
+      expect(keydownHandler.mock.calls[0][0].keyCode).toBe(32)
+    })
+
     it('causes keydown handler to fire converting keyName in an appropriate keyCode when wrapper.trigger("keydown.${keyName}") is fired', async () => {
       let keydownHandler = vi.fn()