test(wsMixin): copri riconnessione allo scadere del timer ed errori

Aggiunge i casi non ancora coperti: il setTimeout di scheduleReconnect
riapre davvero la connessione, un costruttore WebSocket che lancia
programma comunque il retry, onerror azzera lo stato, sendWs ritorna
false se send lancia.

tests/component/wsMixin.test.js

@@ -142,6 +142,49 @@ describe('createWsMixin (wsMixin.js)', () => {
             ws.onclose({ code: 1006 })
             expect(spy).toHaveBeenCalled()
         })
+
+        it('allo scadere del timer riapre davvero la connessione', () => {
+            vi.useFakeTimers()
+            try {
+                const wrapper = mountWith()
+                // il mock non fa mai scattare onopen: sblocca la guardia isConnecting
+                wrapper.vm.isConnecting = false
+                const prima = MockWebSocket.instances.length
+                wrapper.vm.scheduleReconnect()
+                vi.advanceTimersByTime(1000)
+                expect(MockWebSocket.instances.length).toBe(prima + 1)
+                expect(wrapper.vm.reconnectTimeout).toBe(null)
+            } finally {
+                vi.useRealTimers()
+            }
+        })
+
+        it('se il costruttore WebSocket lancia, programma la riconnessione', () => {
+            const wrapper = mountWith()
+            wrapper.vm.isConnecting = false
+            const spy = vi.spyOn(wrapper.vm, 'scheduleReconnect').mockImplementation(() => {})
+            const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {})
+            vi.stubGlobal('WebSocket', class { constructor() { throw new Error('boom') } })
+            try {
+                wrapper.vm.connectWebSocket()
+                expect(spy).toHaveBeenCalled()
+                expect(wrapper.vm.isConnecting).toBe(false)
+                expect(wrapper.vm.ws).toBe(null)
+            } finally {
+                vi.stubGlobal('WebSocket', MockWebSocket)
+                consoleSpy.mockRestore()
+            }
+        })
+
+        it('onerror azzera lo stato di connessione', () => {
+            const wrapper = mountWith()
+            const ws = ultimaWs()
+            wrapper.vm.wsConnected = true
+            wrapper.vm.isConnecting = true
+            ws.onerror()
+            expect(wrapper.vm.wsConnected).toBe(false)
+            expect(wrapper.vm.isConnecting).toBe(false)
+        })
     })
 
     describe('sendWs', () => {
@@ -161,6 +204,17 @@ describe('createWsMixin (wsMixin.js)', () => {
             const inviato = JSON.parse(ws.send.mock.calls.at(-1)[0])
             expect(inviato.type).toBe('action')
         })
+
+        it('ritorna false se send lancia', () => {
+            const wrapper = mountWith()
+            const ws = ultimaWs()
+            ws.readyState = MockWebSocket.OPEN
+            wrapper.vm.wsConnected = true
+            ws.send.mockImplementation(() => { throw new Error('boom') })
+            const consoleSpy = vi.spyOn(console, 'error').mockImplementation(() => {})
+            expect(wrapper.vm.sendWs({ type: 'action' })).toBe(false)
+            consoleSpy.mockRestore()
+        })
     })
 
     describe('cleanup', () => {