Add progress tracking for blob uploads

__tests__/uploadUtils.test.ts

@@ -0,0 +1,58 @@
+import {UploadProgress} from '../src/internal/uploadUtils'
+import {TransferProgressEvent} from '@azure/ms-rest-js'
+
+test('upload progress tracked correctly', () => {
+  const progress = new UploadProgress(1000)
+
+  expect(progress.contentLength).toBe(1000)
+  expect(progress.sentBytes).toBe(0)
+  expect(progress.displayedComplete).toBe(false)
+  expect(progress.timeoutHandle).toBeUndefined()
+  expect(progress.getTransferredBytes()).toBe(0)
+  expect(progress.isDone()).toBe(false)
+
+  progress.onProgress()({loadedBytes: 0} as TransferProgressEvent)
+
+  expect(progress.contentLength).toBe(1000)
+  expect(progress.sentBytes).toBe(0)
+  expect(progress.displayedComplete).toBe(false)
+  expect(progress.timeoutHandle).toBeUndefined()
+  expect(progress.getTransferredBytes()).toBe(0)
+  expect(progress.isDone()).toBe(false)
+
+  progress.onProgress()({loadedBytes: 250} as TransferProgressEvent)
+
+  expect(progress.contentLength).toBe(1000)
+  expect(progress.sentBytes).toBe(250)
+  expect(progress.displayedComplete).toBe(false)
+  expect(progress.timeoutHandle).toBeUndefined()
+  expect(progress.getTransferredBytes()).toBe(250)
+  expect(progress.isDone()).toBe(false)
+
+  progress.onProgress()({loadedBytes: 500} as TransferProgressEvent)
+
+  expect(progress.contentLength).toBe(1000)
+  expect(progress.sentBytes).toBe(500)
+  expect(progress.displayedComplete).toBe(false)
+  expect(progress.timeoutHandle).toBeUndefined()
+  expect(progress.getTransferredBytes()).toBe(500)
+  expect(progress.isDone()).toBe(false)
+
+  progress.onProgress()({loadedBytes: 750} as TransferProgressEvent)
+
+  expect(progress.contentLength).toBe(1000)
+  expect(progress.sentBytes).toBe(750)
+  expect(progress.displayedComplete).toBe(false)
+  expect(progress.timeoutHandle).toBeUndefined()
+  expect(progress.getTransferredBytes()).toBe(750)
+  expect(progress.isDone()).toBe(false)
+
+  progress.onProgress()({loadedBytes: 1000} as TransferProgressEvent)
+
+  expect(progress.contentLength).toBe(1000)
+  expect(progress.sentBytes).toBe(1000)
+  expect(progress.displayedComplete).toBe(false)
+  expect(progress.timeoutHandle).toBeUndefined()
+  expect(progress.getTransferredBytes()).toBe(1000)
+  expect(progress.isDone()).toBe(true)
+})