test(vast): [PKG-VAST-02] cover SDK failures and lifecycle races

test/helpers/vast-sdk.js

@@ -0,0 +1,60 @@
+// Controlled wrapper boundary, not an implementation of Google IMA or media playback.
+// Self-contained so the same recorder can run in Node and a real browser realm.
+export function createVastSdk(options = {}) {
+  const state = { players: [], loads: 0, errors: [], ...options }
+  let resolveLoad
+  let rejectLoad
+  const pending = new Promise((resolve, reject) => {
+    resolveLoad = resolve
+    rejectLoad = reject
+  })
+  const ima = { AdsRenderingSettings: class {}, AdsRequest: class {} }
+  const sdk = {
+    loadImaSdk() {
+      state.loads++
+      return state.deferLoad ? pending : Promise.resolve(ima)
+    },
+    PlayerOptions: class {},
+    Player: class {
+      constructor(...args) {
+        if (state.constructError)
+          throw state.constructError
+        this.args = args
+        this.requests = []
+        this.listeners = new Map()
+        this.destroyCalls = 0
+        state.players.push(this)
+      }
+
+      addEventListener(name, callback) {
+        if (state.listenError)
+          throw state.listenError
+        if (!this.listeners.has(name))
+          this.listeners.set(name, new Set())
+        this.listeners.get(name).add(callback)
+      }
+
+      removeEventListener(name, callback) {
+        this.listeners.get(name)?.delete(callback)
+      }
+
+      emit(name, detail) {
+        for (const callback of [...(this.listeners.get(name) || [])]) callback({ type: name, detail })
+      }
+
+      playAds(request) {
+        if (state.playError)
+          throw state.playError
+        this.requests.push(request)
+      }
+
+      destroy() {
+        this.destroyCalls++
+        if (state.destroyError)
+          throw state.destroyError
+        this.listeners.clear()
+      }
+    },
+  }
+  return { state, sdk, ima, resolveLoad: () => resolveLoad(ima), rejectLoad }
+}