first commit

test/unit/mocks/cryptoMock.js

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+window.crypto = {
+  getRandomValues(array) {
+    for (let i = 0; i < array.length; i += 1) {
+      array[i] = Math.floor(Math.random() * 1000000);
+    }
+  },
+};

test/unit/mocks/localStorageMock.js

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+const store = {};
+window.localStorage = {
+  getItem(key) {
+    return store[key] || null;
+  },
+  setItem(key, value) {
+    store[key] = value.toString();
+  },
+};

test/unit/mocks/mutationObserverMock.js

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+/* eslint-disable class-methods-use-this */
+class MutationObserver {
+  observe() {
+  }
+}
+window.MutationObserver = MutationObserver;

test/unit/mocks/templateWorkerMock.js

@@ -0,0 +1 @@
+module.exports = 'test-file-stub';