diff --git a/src/auth/spec/AuthManager.spec.ts b/src/auth/spec/AuthManager.spec.ts
index b528912..584dc04 100644
--- a/src/auth/spec/AuthManager.spec.ts
+++ b/src/auth/spec/AuthManager.spec.ts
@@ -57,7 +57,7 @@ describe('AuthManager', () => {
     expect((authManager as any).logoutUrl).toEqual('/SASLogon/logout?')
   })
 
-  it('should call the auth callback and return when already logged in', async (done) => {
+  it('should call the auth callback and return when already logged in', async () => {
     const authManager = new AuthManager(
       serverUrl,
       serverType,
@@ -77,10 +77,9 @@ describe('AuthManager', () => {
     expect(loginResponse.isLoggedIn).toBeTruthy()
     expect(loginResponse.userName).toEqual(userName)
     expect(authCallback).toHaveBeenCalledTimes(1)
-    done()
   })
 
-  it('should post a login request to the server if not logged in', async (done) => {
+  it('should post a login request to the server if not logged in', async () => {
     const authManager = new AuthManager(
       serverUrl,
       serverType,
@@ -121,10 +120,9 @@ describe('AuthManager', () => {
       }
     )
     expect(authCallback).toHaveBeenCalledTimes(1)
-    done()
   })
 
-  it('should parse and submit the authorisation form when necessary', async (done) => {
+  it('should parse and submit the authorisation form when necessary', async () => {
     const authManager = new AuthManager(
       serverUrl,
       serverType,
@@ -160,10 +158,9 @@ describe('AuthManager', () => {
     expect(requestClient.authorize).toHaveBeenCalledWith(
       mockLoginAuthoriseRequiredResponse
     )
-    done()
   })
 
-  it('should check and return session information if logged in', async (done) => {
+  it('should check and return session information if logged in', async () => {
     const authManager = new AuthManager(
       serverUrl,
       serverType,
@@ -189,7 +186,5 @@ describe('AuthManager', () => {
         }
       }
     )
-
-    done()
   })
 })
diff --git a/src/test/FileUploader.spec.ts b/src/test/FileUploader.spec.ts
index 9e225a2..4b6f678 100644
--- a/src/test/FileUploader.spec.ts
+++ b/src/test/FileUploader.spec.ts
@@ -1,3 +1,7 @@
+/**
+ * @jest-environment jsdom
+ */
+
 import { FileUploader } from '../FileUploader'
 import { UploadFile } from '../types'
 import { RequestClient } from '../request/RequestClient'
@@ -35,41 +39,40 @@ describe('FileUploader', () => {
     new RequestClient('https://sample.server.com')
   )
 
-  it('should upload successfully', async (done) => {
+  it('should upload successfully', async () => {
     const sasJob = 'test/upload'
     const { files, params } = prepareFilesAndParams()
     mockedAxios.post.mockImplementation(() =>
       Promise.resolve({ data: sampleResponse })
     )
 
-    fileUploader.uploadFile(sasJob, files, params).then((res: any) => {
-      expect(res).toEqual(JSON.parse(sampleResponse))
-      done()
-    })
+    const res = await fileUploader.uploadFile(sasJob, files, params)
+
+    expect(res).toEqual(JSON.parse(sampleResponse))
   })
 
-  it('should an error when no files are provided', async (done) => {
+  it('should an error when no files are provided', async () => {
     const sasJob = 'test/upload'
     const files: UploadFile[] = []
     const params = { table: 'libtable' }
 
-    fileUploader.uploadFile(sasJob, files, params).catch((err: any) => {
-      expect(err.error.message).toEqual('At least one file must be provided.')
-      done()
-    })
+    const err = await fileUploader
+      .uploadFile(sasJob, files, params)
+      .catch((err: any) => err)
+    expect(err.error.message).toEqual('At least one file must be provided.')
   })
 
-  it('should throw an error when no sasJob is provided', async (done) => {
+  it('should throw an error when no sasJob is provided', async () => {
     const sasJob = ''
     const { files, params } = prepareFilesAndParams()
 
-    fileUploader.uploadFile(sasJob, files, params).catch((err: any) => {
-      expect(err.error.message).toEqual('sasJob must be provided.')
-      done()
-    })
+    const err = await fileUploader
+      .uploadFile(sasJob, files, params)
+      .catch((err: any) => err)
+    expect(err.error.message).toEqual('sasJob must be provided.')
   })
 
-  it('should throw an error when login is required', async (done) => {
+  it('should throw an error when login is required', async () => {
     mockedAxios.post.mockImplementation(() =>
       Promise.resolve({ data: '<form action="Logon">' })
     )
@@ -77,15 +80,13 @@ describe('FileUploader', () => {
     const sasJob = 'test'
     const { files, params } = prepareFilesAndParams()
 
-    fileUploader.uploadFile(sasJob, files, params).catch((err: any) => {
-      expect(err.error.message).toEqual(
-        'You must be logged in to upload a file.'
-      )
-      done()
-    })
+    const err = await fileUploader
+      .uploadFile(sasJob, files, params)
+      .catch((err: any) => err)
+    expect(err.error.message).toEqual('You must be logged in to upload a file.')
   })
 
-  it('should throw an error when invalid JSON is returned by the server', async (done) => {
+  it('should throw an error when invalid JSON is returned by the server', async () => {
     mockedAxios.post.mockImplementation(() =>
       Promise.resolve({ data: '{invalid: "json"' })
     )
@@ -93,13 +94,13 @@ describe('FileUploader', () => {
     const sasJob = 'test'
     const { files, params } = prepareFilesAndParams()
 
-    fileUploader.uploadFile(sasJob, files, params).catch((err: any) => {
-      expect(err.error.message).toEqual('File upload request failed.')
-      done()
-    })
+    const err = await fileUploader
+      .uploadFile(sasJob, files, params)
+      .catch((err: any) => err)
+    expect(err.error.message).toEqual('File upload request failed.')
   })
 
-  it('should throw an error when the server request fails', async (done) => {
+  it('should throw an error when the server request fails', async () => {
     mockedAxios.post.mockImplementation(() =>
       Promise.reject({ data: '{message: "Server error"}' })
     )
@@ -107,10 +108,9 @@ describe('FileUploader', () => {
     const sasJob = 'test'
     const { files, params } = prepareFilesAndParams()
 
-    fileUploader.uploadFile(sasJob, files, params).catch((err: any) => {
-      expect(err.error.message).toEqual('File upload request failed.')
-
-      done()
-    })
+    const err = await fileUploader
+      .uploadFile(sasJob, files, params)
+      .catch((err: any) => err)
+    expect(err.error.message).toEqual('File upload request failed.')
   })
 })
diff --git a/src/test/FolderOperations.spec.ts b/src/test/FolderOperations.spec.ts
index 1fdf92c..147e4b4 100644
--- a/src/test/FolderOperations.spec.ts
+++ b/src/test/FolderOperations.spec.ts
@@ -14,7 +14,7 @@ describe('FolderOperations', () => {
 
   beforeEach(() => {})
 
-  it('should move and rename folder', async (done) => {
+  it('should move and rename folder', async () => {
     mockFetchResponse(false)
 
     let res: any = await sasViyaApiClient.moveFolder(
@@ -26,11 +26,9 @@ describe('FolderOperations', () => {
 
     expect(res.folder.name).toEqual('newName')
     expect(res.folder.parentFolderUri.split('=')[1]).toEqual('/Test/toFolder')
-
-    done()
   })
 
-  it('should move and keep the name of folder', async (done) => {
+  it('should move and keep the name of folder', async () => {
     mockFetchResponse(true)
 
     let res: any = await sasViyaApiClient.moveFolder(
@@ -42,11 +40,9 @@ describe('FolderOperations', () => {
 
     expect(res.folder.name).toEqual('oldName')
     expect(res.folder.parentFolderUri.split('=')[1]).toEqual('/Test/toFolder')
-
-    done()
   })
 
-  it('should only rename folder', async (done) => {
+  it('should only rename folder', async () => {
     mockFetchResponse(false)
 
     let res: any = await sasViyaApiClient.moveFolder(
@@ -58,8 +54,6 @@ describe('FolderOperations', () => {
 
     expect(res.folder.name).toEqual('newName')
     expect(res.folder.parentFolderUri.split('=')[1]).toEqual('/Test/toFolder')
-
-    done()
   })
 })
 
diff --git a/src/test/utils/parseGeneratedCode.spec.ts b/src/test/utils/parseGeneratedCode.spec.ts
index d08108d..36c1353 100644
--- a/src/test/utils/parseGeneratedCode.spec.ts
+++ b/src/test/utils/parseGeneratedCode.spec.ts
@@ -1,6 +1,6 @@
 import { parseGeneratedCode } from '../../utils/index'
 
-it('should parse generated code', async (done) => {
+it('should parse generated code', () => {
   expect(sampleResponse).toBeTruthy()
 
   const parsedGeneratedCode = parseGeneratedCode(sampleResponse)
@@ -15,8 +15,6 @@ it('should parse generated code', async (done) => {
   expect(generatedCodeLines[2].startsWith('MPRINT(MM_WEBOUT)')).toBeTruthy()
   expect(generatedCodeLines[3].startsWith('MPRINT(MM_WEBRIGHT)')).toBeTruthy()
   expect(generatedCodeLines[4].startsWith('MPRINT(MM_WEBOUT)')).toBeTruthy()
-
-  done()
 })
 
 /* tslint:disable */
diff --git a/src/test/utils/parseSourceCode.spec.ts b/src/test/utils/parseSourceCode.spec.ts
index 4e779cb..7510000 100644
--- a/src/test/utils/parseSourceCode.spec.ts
+++ b/src/test/utils/parseSourceCode.spec.ts
@@ -1,6 +1,6 @@
 import { parseSourceCode } from '../../utils/index'
 
-it('should parse SAS9 source code', async (done) => {
+it('should parse SAS9 source code', async () => {
   expect(sampleResponse).toBeTruthy()
 
   const parsedSourceCode = parseSourceCode(sampleResponse)
@@ -15,8 +15,6 @@ it('should parse SAS9 source code', async (done) => {
   expect(sourceCodeLines[2].startsWith('8')).toBeTruthy()
   expect(sourceCodeLines[3].startsWith('9')).toBeTruthy()
   expect(sourceCodeLines[4].startsWith('10')).toBeTruthy()
-
-  done()
 })
 
 /* tslint:disable */