Create display.test.js

Author: atherdon

tests/display.test.js

@@ -0,0 +1,34 @@
+// https://www.codegrepper.com/code-examples/javascript/jest+test+if+method+exists
+
+
+describe('', () => {
+  test('', () => {
+  
+  });
+});
+
+
+
+// jest.mock("../foo");
+// const foo = require("../foo");
+
+// test('make sure foo is called', () => {
+//   expect(foo).toBeCalled();
+// });
+// test('make sure foo run only once', () => {
+//    expect(foo.mock.calls.length).toBe(1);
+// });
+
+
+// jest.mock("../foo");
+// jest.mock("../bar");
+
+// const foo = require("../foo");
+// const bar = require("../bar");
+
+// test("functions are called", done => {
+//   require("../index");
+//   expect(foo.mock.calls.length).toBe(1);
+//   expect(bar.mock.calls.length).toBe(1);
+//   done();
+// });