diff --git a/src/App.js b/src/App.js
index 1cb179ea6..cc1c7d3b5 100644
--- a/src/App.js
+++ b/src/App.js
@@ -13,19 +13,16 @@ import OHIFVTKExtension from 'ohif-vtk-extension'
 import OHIFDicomPDFExtension from 'ohif-dicom-pdf-extension'
 import OHIFDicomHtmlExtension from 'ohif-dicom-html-extension'
 import OHIFDicomMicroscopyExtension from 'ohif-dicom-microscopy-extension'
+import { OidcProvider, reducer as oidcReducer } from 'redux-oidc'
 import {
-  loadUser,
-  OidcProvider,
-  createUserManager,
-  reducer as oidcReducer,
-} from 'redux-oidc'
-import cornerstoneWADOImageLoader from 'cornerstone-wado-image-loader'
-
-const { ExtensionManager } = OHIF.extensions
+  getUserManagerForOpenIdConnectClient,
+  initWebWorkers,
+} from './utils/index.js'
 
 const Icons = 'icons.svg'
-
+const { ExtensionManager } = OHIF.extensions
 const { reducers, localStorage } = OHIF.redux
+
 reducers.ui = ui
 reducers.oidc = oidcReducer
 
@@ -163,60 +160,6 @@ function handleServers(servers) {
   }
 }
 
-function handleOIDC(oidc) {
-  if (!oidc) {
-    return
-  }
-
-  const oidcClient = oidc[0]
-
-  const settings = {
-    authority: oidcClient.authServerUrl,
-    client_id: oidcClient.clientId,
-    redirect_uri: oidcClient.authRedirectUri,
-    silent_redirect_uri: '/silent-refresh.html',
-    post_logout_redirect_uri: oidcClient.postLogoutRedirectUri,
-    response_type: oidcClient.responseType,
-    scope: 'email profile openid', // Note: Request must have scope 'openid' to be considered an OpenID Connect request
-    automaticSilentRenew: true,
-    revokeAccessTokenOnSignout: true,
-    filterProtocolClaims: true,
-    loadUserInfo: true,
-    extraQueryParams: oidcClient.extraQueryParams,
-  }
-
-  const userManager = createUserManager(settings)
-
-  loadUser(store, userManager)
-
-  return userManager
-}
-
-/**
- *
- * @param {String} baseDirectory
- * @param {String} webWorkScriptsPath
- */
-function handleWebWorkerInit(baseDirectory, webWorkScriptsPath) {
-  const scriptsPath = `${baseDirectory}/${webWorkScriptsPath}`
-  const config = {
-    maxWebWorkers: Math.max(navigator.hardwareConcurrency - 1, 1),
-    startWebWorkersOnDemand: true,
-    webWorkerPath: `${scriptsPath}/cornerstoneWADOImageLoaderWebWorker.min.js`,
-    taskConfiguration: {
-      decodeTask: {
-        loadCodecsOnStartup: true,
-        initializeCodecsOnStartup: false,
-        codecsPath: `${scriptsPath}/cornerstoneWADOImageLoaderCodecs.min.js`,
-        usePDFJS: false,
-        strict: false,
-      },
-    },
-  }
-
-  cornerstoneWADOImageLoader.webWorkerManager.initialize(config)
-}
-
 class App extends Component {
   static propTypes = {
     routerBasename: PropTypes.string,
@@ -238,9 +181,12 @@ class App extends Component {
   constructor(props) {
     super(props)
 
-    this.userManager = handleOIDC(this.props.oidc)
+    this.userManager = getUserManagerForOpenIdConnectClient(
+      store,
+      this.props.oidc
+    )
     handleServers(this.props.servers)
-    handleWebWorkerInit(
+    initWebWorkers(
       this.props.routerBasename,
       this.props.relativeWebWorkerScriptsPath
     )
diff --git a/src/__mocks__/cornerstone-wado-image-loader.js b/src/__mocks__/cornerstone-wado-image-loader.js
new file mode 100644
index 000000000..bb8a7d488
--- /dev/null
+++ b/src/__mocks__/cornerstone-wado-image-loader.js
@@ -0,0 +1,5 @@
+export default {
+  webWorkerManager: {
+    initialize: jest.fn(),
+  },
+}
diff --git a/src/utils/getUserManagerForOpenIdConnectClient.js b/src/utils/getUserManagerForOpenIdConnectClient.js
new file mode 100644
index 000000000..1140f48db
--- /dev/null
+++ b/src/utils/getUserManagerForOpenIdConnectClient.js
@@ -0,0 +1,52 @@
+// https://github.com/maxmantz/redux-oidc/blob/master/docs/API.md
+import { loadUser, createUserManager } from 'redux-oidc'
+
+/**
+ * Creates a userManager from oidcSettings;
+ * loads the user into the provided redux store
+ *
+ * @param {*} store
+ * @param {Object} oidcSettings
+ * @param {string} oidcSettings.authServerUrl,
+ * @param {string} oidcSettings.clientId,
+ * @param {string} oidcSettings.authRedirectUri,
+ * @param {string} oidcSettings.postLogoutRedirectUri,
+ * @param {string} oidcSettings.responseType,
+ * @param {string} oidcSettings.extraQueryParams,
+ */
+export default function(store, oidcSettings) {
+  if (!store || !oidcSettings) {
+    return
+  }
+
+  const {
+    authServerUrl,
+    clientId,
+    authRedirectUri,
+    postLogoutRedirectUri,
+    responseType,
+    extraQueryParams,
+  } = oidcSettings
+
+  const settings = {
+    authority: authServerUrl,
+    client_id: clientId,
+    redirect_uri: authRedirectUri,
+    silent_redirect_uri: '/silent-refresh.html',
+    post_logout_redirect_uri: postLogoutRedirectUri,
+    response_type: responseType,
+    // Note: Request must have scope 'openid' to be considered an OpenID Connect request
+    scope: 'email profile openid',
+    automaticSilentRenew: true,
+    revokeAccessTokenOnSignout: true,
+    filterProtocolClaims: true,
+    loadUserInfo: true,
+    extraQueryParams: extraQueryParams,
+  }
+
+  const userManager = createUserManager(settings)
+
+  loadUser(store, userManager)
+
+  return userManager
+}
diff --git a/src/utils/index.js b/src/utils/index.js
new file mode 100644
index 000000000..2498ab47d
--- /dev/null
+++ b/src/utils/index.js
@@ -0,0 +1,4 @@
+import getUserManagerForOpenIdConnectClient from './getUserManagerForOpenIdConnectClient.js'
+import initWebWorkers from './initWebWorkers.js'
+
+export { getUserManagerForOpenIdConnectClient, initWebWorkers }
diff --git a/src/utils/initWebWorkers.js b/src/utils/initWebWorkers.js
new file mode 100644
index 000000000..1de094071
--- /dev/null
+++ b/src/utils/initWebWorkers.js
@@ -0,0 +1,26 @@
+import cornerstoneWADOImageLoader from 'cornerstone-wado-image-loader'
+
+/**
+ *
+ * @param {String} baseDirectory
+ * @param {String} webWorkScriptsPath
+ */
+export default function(baseDirectory, webWorkScriptsPath) {
+  const scriptsPath = `${baseDirectory}/${webWorkScriptsPath}`
+  const config = {
+    maxWebWorkers: Math.max(navigator.hardwareConcurrency - 1, 1),
+    startWebWorkersOnDemand: true,
+    webWorkerPath: `${scriptsPath}/cornerstoneWADOImageLoaderWebWorker.min.js`,
+    taskConfiguration: {
+      decodeTask: {
+        loadCodecsOnStartup: true,
+        initializeCodecsOnStartup: false,
+        codecsPath: `${scriptsPath}/cornerstoneWADOImageLoaderCodecs.min.js`,
+        usePDFJS: false,
+        strict: false,
+      },
+    },
+  }
+
+  cornerstoneWADOImageLoader.webWorkerManager.initialize(config)
+}
diff --git a/src/utils/initWebWorkers.test.js b/src/utils/initWebWorkers.test.js
new file mode 100644
index 000000000..af1aacc00
--- /dev/null
+++ b/src/utils/initWebWorkers.test.js
@@ -0,0 +1,15 @@
+import initWebWorkers from './initWebWorkers.js'
+import cornerstoneWADOImageLoader from 'cornerstone-wado-image-loader'
+
+describe('initWebWorkers', () => {
+  it("initializes cornerstoneWADOImageLoader's web workers", () => {
+    const basePath = '/'
+    const relativeWebWorkerScriptsPath = ''
+
+    initWebWorkers(basePath, relativeWebWorkerScriptsPath)
+
+    expect(
+      cornerstoneWADOImageLoader.webWorkerManager.initialize
+    ).toHaveBeenCalled()
+  })
+})