Set up testing

Author: simonrw

Diff for: __tests__/index.test.js

@@ -0,0 +1,5 @@
+describe("Simple test", () => {
+  test("it passes", () => {
+    expect(true).toEqual(true);
+  });
+});

Diff for: jest.config.js

@@ -0,0 +1,8 @@
+module.exports = {
+  testEnvironment: "node",
+  verbose: true,
+  coverageDirectory: "coverage",
+  collectCoverageFrom: ["src/**/*.{js,jsx,ts,tsx}"],
+  testMatch: ["**/__tests__/**/*.[jt]s?(x)", "**/?(*.)+(spec|test).[jt]s?(x)"],
+};
+