feat: Universal resolver unit tests

packages/daf-resolver-universal/package.json

@@ -13,6 +13,7 @@
   },
   "devDependencies": {
     "@types/debug": "^4.1.5",
+    "jest-fetch-mock": "^3.0.3",
     "typescript": "^3.8.3"
   },
   "files": [

packages/daf-resolver-universal/src/__tests__/resolver.test.ts

@@ -0,0 +1,24 @@
+import { DafUniversalResolver } from '../resolver'
+import fetchMock from 'jest-fetch-mock'
+fetchMock.enableMocks()
+
+describe('daf-resolver-universal', () => {
+  it('should throw error when misconfigured', () => {
+    expect(() => {
+      //@ts-ignore
+      new DafUniversalResolver({})
+    }).toThrow()
+  })
+
+  it('should have resolve method', () => {
+    const resolver = new DafUniversalResolver({ url: 'https://example/' })
+    expect(resolver).toHaveProperty('resolve')
+  })
+
+  it('should fetch did doc', async () => {
+    const resolver = new DafUniversalResolver({ url: 'https://example/' })
+    fetchMock.mockResponse(JSON.stringify({ didDocument: { data: '12345' } }))
+    const doc = await resolver.resolve('did:example:123')
+    expect(doc).toEqual({ data: '12345' })
+  })
+})

packages/daf-resolver-universal/src/resolver.ts

@@ -11,6 +11,8 @@ export class DafUniversalResolver {
   private url: string
 
   constructor(options: Options) {
+    if (!options.url) throw Error('[daf-resolver-universal] url required')
+    debug(options.url)
     this.url = options.url
   }