Replace karma with jest

.circleci/config.yml

@@ -0,0 +1,34 @@
+version: 2
+jobs:
+  build:
+    working_directory: ~/uport-connect
+    docker:
+      - image: circleci/node:8-browsers
+    steps:
+      - checkout
+
+      # Download and cache dependencies
+      - restore_cache:
+          keys:
+            - dependencies-cache-{{ checksum "package.json" }}
+
+      - run:
+          name: install-dependencies
+          command: yarn
+
+      - run:
+          name: test
+          command: npm run test:jest
+
+      - run:
+          name: code-coverage
+          command: bash <(curl -s https://codecov.io/bash)
+
+      - run:
+          name: dist
+          command: npm run build-dist && npm run build-dist-prod
+
+      - save_cache:
+          key: dependency-cache-{{ checksum "package.json" }}
+          paths:
+            - ./node_modules

__tests__/Connect.js

@@ -0,0 +1,25 @@
+import { Connect } from "../src/index";
+import { Credentials } from "uport";
+
+describe("Connect", () => {
+  describe("config", () => {
+    it("defaults", () => {
+      const uport = new Connect("test app");
+      expect(uport.appName).toEqual("test app");
+      expect(uport.infuraApiKey).toEqual("test-app");
+      expect(uport.uriHandler.name).toEqual("openQr");
+      expect(uport.network.id).toEqual("0x4");
+      expect(uport.closeUriHandler.name).toEqual("closeQr");
+      expect(uport.credentials).toBeInstanceOf(Credentials);
+      expect(uport.canSign).toBeFalsy();
+      expect(uport.getWeb3).toBeDefined();
+    });
+
+    it("does not have a closeUriHandler if not using built in openQr", () => {
+      const noop = uri => null;
+      const uport = new Connect("test", { uriHandler: noop });
+      expect(uport.uriHandler).toEqual(noop);
+      expect(uport.closeUriHandler).toBeUndefined();
+    });
+  });
+});