diff --git a/ts/session/utils/SyncMessage.ts b/ts/session/utils/SyncMessage.ts
index 5817dc943..eb1d03497 100644
--- a/ts/session/utils/SyncMessage.ts
+++ b/ts/session/utils/SyncMessage.ts
@@ -65,8 +65,5 @@ export async function getSyncContacts(): Promise<Array<any> | undefined> {
     .filter(c => c.id !== primaryDevice.key);
 
   // Return unique contacts
-  return _.uniqBy(
-    [...primaryContacts, ...secondaryContacts],
-    'id'
-  );
+  return _.uniqBy([...primaryContacts, ...secondaryContacts], 'id');
 }
diff --git a/ts/test/session/utils/SyncMessage_test.ts b/ts/test/session/utils/SyncMessage_test.ts
index 5a47f7bd4..086fa0abb 100644
--- a/ts/test/session/utils/SyncMessage_test.ts
+++ b/ts/test/session/utils/SyncMessage_test.ts
@@ -1,13 +1,10 @@
 import chai from 'chai';
 import * as sinon from 'sinon';
 
-import { PubKey } from '../../../session/types/';
 import { SyncMessageUtils } from '../../../session/utils/';
-import { SyncMessage } from '../../../session/messages/outgoing';
 import { TestUtils } from '../../test-utils';
 import { UserUtil } from '../../../util';
 import { MultiDeviceProtocol } from '../../../session/protocols';
-import { Integer } from '../../../types/Util';
 
 // tslint:disable-next-line: no-require-imports no-var-requires
 const chaiAsPromised = require('chai-as-promised');
@@ -24,8 +21,6 @@ describe('Sync Message Utils', () => {
       // Stubbed
       expect(syncMessage).to.not.exist;
       // expect(syncMessage instanceof SyncMessage).to.equal(true, 'message was not converted to SyncMessage');
-
-      // Further tests required
     });
   });
 
@@ -52,36 +47,14 @@ describe('Sync Message Utils', () => {
     let getOrCreateAndWaitStub: sinon.SinonStub;
     let getOrCreatAndWaitItem: any;
 
-    // tslint:disable-next-line: insecure-random
-    const randomBoolean = () => !!Math.round(Math.random());
-    const randomMockConv = (primary: boolean) => (
-      // new (function(primary) {
-        
-      //   return {
-      //     id: generateFakePubKey().key,
-      //     isPrivate: () => true,
-      //     isOurLocalDevice: () => false,
-      //     isBlocked: () => false,
-      //     getPrimaryDevicePubKey: () => this.isPrivate ? 
-
-      //     attributes: {
-      //       secondaryStatus: !primary,
-      //     },
-      //   };
-      // })();
-    {}
-    );
-
-
-
     // Fill half with secondaries, half with primaries
     const numConversations = 20;
     const primaryConversations = new Array(numConversations / 2)
       .fill({})
-      .map(() => randomMockConv(true));
+      .map(() => new TestUtils.MockPrivateConversation({ isPrimary: true }));
     const secondaryConversations = new Array(numConversations / 2)
       .fill({})
-      .map(() => randomMockConv(false));
+      .map(() => new TestUtils.MockPrivateConversation({ isPrimary: false }));
     const conversations = [...primaryConversations, ...secondaryConversations];
 
     const sandbox = sinon.createSandbox();
@@ -102,7 +75,8 @@ describe('Sync Message Utils', () => {
 
       // Scale result in sync with secondaryConversations on callCount
       getOrCreateAndWaitStub = sandbox.stub().callsFake(() => {
-        const item = secondaryConversations[getOrCreateAndWaitStub.callCount - 1];
+        const item =
+          secondaryConversations[getOrCreateAndWaitStub.callCount - 1];
 
         // Make the item a primary device to match the call in SyncMessage under secondaryContactsPromise
         getOrCreatAndWaitItem = {
@@ -150,14 +124,12 @@ describe('Sync Message Utils', () => {
 
       // We should have numConversations unique contacts
       expect(contacts).to.have.length(numConversations);
-      
+
       // All contacts should be primary; half of which some from secondaries in secondaryContactsPromise
       expect(contacts?.find(c => c.attributes.secondaryStatus)).to.not.exist;
-      expect(contacts)
-
-      
+      expect(contacts?.filter(c => c.isPrimary)).to.have.length(
+        numConversations / 2
+      );
     });
   });
-
-  // MAKE MORE SPECIFIC, CHECK PARAMETERS
 });
diff --git a/ts/test/test-utils/testUtils.ts b/ts/test/test-utils/testUtils.ts
index 69bbf7826..457fa5ca6 100644
--- a/ts/test/test-utils/testUtils.ts
+++ b/ts/test/test-utils/testUtils.ts
@@ -10,8 +10,10 @@ import {
   ClosedGroupChatMessage,
   OpenGroupMessage,
 } from '../../session/messages/outgoing';
-import { Integer } from '../../types/Util';
-import { ConversationModel, ConversationAttributes } from '../../../js/models/conversation';
+import {
+  ConversationAttributes,
+} from '../../../js/models/conversation';
+import { TestUtils } from '.';
 
 const globalAny: any = global;
 const sandbox = sinon.createSandbox();
@@ -79,11 +81,11 @@ export function generateFakePubKey(): PubKey {
   return new PubKey(pubkeyString);
 }
 
-export function generateFakePubKeys(amount: Integer): Array<PubKey> {
+export function generateFakePubKeys(amount: number): Array<PubKey> {
   const numPubKeys = amount > 0 ? Math.floor(amount) : 0;
 
   // tslint:disable-next-line: no-unnecessary-callback-wrapper
-  return new Array(amount).fill(0).map(() => generateFakePubKey());
+  return new Array(numPubKeys).fill(0).map(() => generateFakePubKey());
 }
 
 export function generateChatMessage(identifier?: string): ChatMessage {
@@ -126,19 +128,34 @@ export function generateClosedGroupMessage(
   });
 }
 
-    // Mock ConversationModel
-export class MockPrivateConversation implements ConversationModel {
+interface MockPrivateConversationParams {
+  id?: string;
+  isPrimary: boolean;
+}
+
+export class MockPrivateConversation {
   public id: string;
   public isPrimary: boolean;
   public attributes: ConversationAttributes;
 
-  constructor(isPrimary: boolean) {
-    this.isPrimary = isPrimary;
+  constructor(params: MockPrivateConversationParams) {
+    const dayInSeconds = 86400;
+
+    this.isPrimary = params.isPrimary;
+    this.id = params.id ?? TestUtils.generateFakePubKey().key;
 
-    this.id = TestUtils.generateFakePubKey().key;
     this.attributes = {
-      members
-    }
+      members: [],
+      left: false,
+      expireTimer: dayInSeconds,
+      profileSharing: true,
+      mentionedUs: false,
+      unreadCount: 99,
+      isArchived: false,
+      active_at: Date.now(),
+      timestamp: Date.now(),
+      secondaryStatus: !this.isPrimary,
+    };
   }
 
   public isPrivate() {
@@ -154,10 +171,6 @@ export class MockPrivateConversation implements ConversationModel {
   }
 
   public getPrimaryDevicePubKey() {
-    return this.isPrimary
-      ? this.id
-      : TestUtils.generateFakePubKey().key;
+    return this.isPrimary ? this.id : TestUtils.generateFakePubKey().key;
   }
-  }
-
-  const myconv = new MockPrivateConversation(false) ;
\ No newline at end of file
+}
diff --git a/ts/types/Util.ts b/ts/types/Util.ts
index e3455e0a3..bf9cd05de 100644
--- a/ts/types/Util.ts
+++ b/ts/types/Util.ts
@@ -1,8 +1,3 @@
-
-// Integer Type - primarily for incremental values in ConversationModel etc
-export type Integer = number & { __int__: void };
-export const roundToInt = (num: number): Integer => Math.round(num) as Integer;
-
 export type RenderTextCallbackType = (options: {
   text: string;
   key: number;