test.js

var test = require('tape');
var logic = require('./logic');
var todoFunctions = require('./logic.js');

test('Testing function addTodo', function(t) {
  let expected = [{id:1, description: "Feed the cat"}];
  let actual = todoFunctions.addTodo([], {description: "Feed the cat"});
  t.deepEqual(actual, expected, 'A new object with id should be appended to empty array');
  t.end();
});

test('Testing function addTodo', function(t) {
  let expected = [{id:1, description: "Feed the cat"}, {id:2, description: "Wash dishes"}];
  let actual = todoFunctions.addTodo([{id:1, description: "Feed the cat"}], {description: "Wash dishes"});
  t.deepEqual(actual, expected, 'A new object with id 2 should be appended to one-element array');
  t.end();
});

test('Testing function deleteTodo', function(t) {
  let expected = [{id:1, description: "Feed the cat"}];
  let actual = todoFunctions.deleteTodo([{id:1, description: "Feed the cat"}, {id: 2, description: "Wash dishes"}],2);
  t.deepEqual(actual, expected, 'An object with id=idToDelete was removed from array');
  t.end();
});


test('Testing function markTodo false->true', function(t) {
  let actual = todoFunctions.markTodo([{id:1, description: "Feed the cat", done:false}, {id:2, description: "Wash dishes", done: false}],2);
  let expected = [{id:1, description: "Feed the cat", done:false}, {id:2, description: "Wash dishes", done: true}];
  t.deepEqual(actual, expected, 'An object with id=idToDelete was removed from array');
  t.end();
});

test('Testing function markTodo true->false', function(t) {
  let actual = todoFunctions.markTodo([{id:1, description: "Feed the cat", done:false}, {id:2, description: "Wash dishes", done: true}],2);
  let expected = [{id:1, description: "Feed the cat", done:false}, {id:2, description: "Wash dishes", done: false}];
  t.deepEqual(actual, expected, 'An object with id=idToDelete was removed from array');
  t.end();
});

test('Testing function sortTodos descending', function(t) {
  let actual = todoFunctions.sortTodos([{id:1, description: "Feed the cat", done:false}, {id:2, description: "Abide", done: false}],todoFunctions.sortDescending);
  let expected = [ {id:2, description: "Abide", done: false}, {id:1, description: "Feed the cat", done:false}];
  t.deepEqual(actual, expected, 'An object with higher id should come first');
  t.end();
});

test('Testing function sortTodosAZ', function(t) {
  let actual = todoFunctions.sortTodos([{id:1, description: "Feed the cat", done:false}, {id:2, description: "Abide", done: false}],todoFunctions.sortDescending);
  let expected = [ {id:2, description: "Abide", done: false}, {id:1, description: "Feed the cat", done:false}];
  t.deepEqual(actual, expected, 'Objects should be sorted alphabetically');
  t.end();
});