Configure Codecov coverage and results (#569)

* Configure Codecov coverage and results

* Actually produce reports

jest.config.js

@@ -11,6 +11,14 @@ module.exports = {
   // ...angularPreset,
   preset: "jest-preset-angular",
 
+  reporters: ["default", "jest-junit"],
+
+  collectCoverage: true,
+  // Ensure we collect coverage from files without tests
+  collectCoverageFrom: ["src/**/*.ts"],
+  coverageReporters: ["html", "lcov"],
+  coverageDirectory: "coverage",
+
   testEnvironment: "jsdom",
   testMatch: ["**/+(*.)+(spec).+(ts)"],