Stubbing PerformanceObserver in tests

8c2116ff · Denys Mishunov · a2cd41be · 8c2116ff
Commit 8c2116ff authored Sep 24, 2020 by Denys Mishunov
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spec/frontend/environment.js spec/frontend/environment.js +8 -0

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--- a/spec/frontend/environment.js
+++ b/spec/frontend/environment.js
@@ -58,6 +58,14 @@ class CustomEnvironment extends JSDOMEnvironment {
      measure: () => null,
      getEntriesByName: () => [],
    });
+
+    this.global.PerformanceObserver = class {
+      /* eslint-disable no-useless-constructor, no-unused-vars, no-empty-function, class-methods-use-this */
+      constructor(callback) {}
+      disconnect() {}
+      observe(element, initObject) {}
+      /* eslint-enable no-useless-constructor, no-unused-vars, no-empty-function, class-methods-use-this */
+    };
  }

  async teardown() {