diff --git a/libraries/SearchIndex/index.test.ts b/libraries/SearchIndex/index.test.ts
index cd17a59fbd..30897a5a59 100644
--- a/libraries/SearchIndex/index.test.ts
+++ b/libraries/SearchIndex/index.test.ts
@@ -1,4 +1,6 @@
 import SearchIndex from './index'
+// global.console.warn = jest.fn()
+// TODO: Add coverage for the warning being logged
 import * as index from '~/libraries/SearchIndex/index'
 
 describe('index.default.serialize', () => {
@@ -393,7 +395,7 @@ describe('index.default.unsubscribe', () => {
 })
 
 describe('', () => {
-  test('', async () => {
+  test('update', async () => {
     const idx = new SearchIndex({
       ref: 'id',
       fields: ['text'],
@@ -413,4 +415,88 @@ describe('', () => {
       '2',
     ])
   })
+  test('serialize', async () => {
+    const idx = new SearchIndex({
+      ref: 'id',
+      fields: ['text'],
+    })
+    const data = [
+      { id: '1', text: 'hello' },
+      { id: '2', text: 'world' },
+      { id: '3', text: 'hello world' },
+    ]
+    expect(JSON.parse(idx.serialize())).toMatchObject({
+      schema: { fields: ['text'], ref: 'id' },
+    })
+  })
+  test('serialize', async () => {
+    const idx = new SearchIndex({
+      ref: 'id',
+      fields: ['text'],
+    })
+    const data = [
+      { id: '1', text: 'hello' },
+      { id: '2', text: 'world' },
+      { id: '3', text: 'hello world' },
+    ]
+    const serializedData = idx.serialize()
+    expect(SearchIndex.deserialize(serializedData)).toMatchObject({
+      schema: { fields: ['text'], ref: 'id' },
+    })
+  })
+  test('unsubscribe', async () => {
+    const idx = new SearchIndex({
+      ref: 'id',
+      fields: ['text'],
+    })
+    const data = [
+      { id: '1', text: 'hello' },
+      { id: '2', text: 'world' },
+      { id: '3', text: 'hello world' },
+    ]
+    const observable = jest.fn()
+    observable.unsubscribe = jest.fn()
+    idx.unsubscribe(observable)
+    expect(observable.unsubscribe).toHaveBeenCalled()
+  })
+  test.skip('subscribe', async () => {
+    const idx = new SearchIndex({
+      ref: 'id',
+      fields: ['text'],
+    })
+    const data = [
+      { id: '1', text: 'hello' },
+      { id: '2', text: 'world' },
+      { id: '3', text: 'hello world' },
+    ]
+    idx.update(data)
+    const observable = jest.fn()
+    observable.subscribe = jest.fn()
+    /* function callback(bool) {
+      return bool
+    }
+    idx.subscribe(observable, callback) */
+    const callback = jest.fn()
+    idx.subscribe(observable, callback)
+    expect(observable.subscribe).toHaveBeenCalled()
+    expect(callback).toHaveBeenCalled()
+  })
+  test.skip('search but invalid search query', async () => {
+    const idx = new SearchIndex({
+      ref: 'id',
+      fields: ['text'],
+    })
+    const data = [
+      { id: '1', text: 'hello' },
+      { id: '2', text: 'world' },
+      { id: '3', text: 'hello world' },
+    ]
+    idx.update(data)
+
+    expect(console.warn).toHaveBeenCalled()
+    expect(idx.search('$%@*&*#&@*', true)?.map((r) => r.ref)).toEqual([
+      '1',
+      '3',
+    ])
+  })
 })