wip

Author: silesky

packages/signals/signals/src/plugin/__tests__/signals-plugin.test.ts

@@ -1,16 +1,36 @@
 import { SignalsPlugin } from '../signals-plugin'
 
+// this test was throwing an error, so I had to mock the sessionStorage --
+// no idea why, as sessionStorage is a global object is available in the browser in the test environment
+const sessionStorageMock = (() => {
+  let store: Record<string, any> = {}
+  return {
+    // @ts-ignore
+    getItem: (key: string) => store[key] || null,
+    setItem: (key: string, value: unknown) => {
+      // @ts-ignore
+      store[key] = value.toString()
+    },
+    removeItem: (key: string) => {
+      // @ts-ignore
+      delete store[key]
+    },
+    clear: () => {
+      store = {}
+    },
+  }
+})()
+
+Object.defineProperty(window, 'sessionStorage', {
+  value: sessionStorageMock,
+})
 /**
  * This should be tested at the integration level
  * A few tests, just for example purposes.
  */
 describe(SignalsPlugin, () => {
-  let plugin: SignalsPlugin
-  beforeEach(() => {
-    plugin = new SignalsPlugin()
-  })
-
   test('onSignal method registers callback', () => {
+    const plugin = new SignalsPlugin()
     const callback = jest.fn()
     const emitterSpy = jest.spyOn(plugin.signals.signalEmitter, 'subscribe')
     plugin.onSignal(callback)
@@ -19,6 +39,7 @@ describe(SignalsPlugin, () => {
   })
 
   test('addSignal method emits signal', () => {
+    const plugin = new SignalsPlugin()
     const signal = { data: 'test' } as any
     const emitterSpy = jest.spyOn(plugin.signals.signalEmitter, 'emit')
     plugin.addSignal(signal)