push

exercises/07_unit_testing/todo/modules/todo.js

@@ -10,7 +10,16 @@ module.exports.clear = () => {
 module.exports.add = (item, qty) => {
 	qty = Number(qty)
 	if(isNaN(qty)) throw new Error('the quantity must be a number')
-	data.push({item: item, qty: qty})
+	let flag = false
+	for(let index in data) {
+		if (data[index].item === item) {
+			data[index].qty+= qty
+			flag = true
+		}
+	}
+	if(flag === false) {
+		data.push({item: item, qty: qty})
+	}
 }
 
 module.exports.getAll = () => {

exercises/07_unit_testing/todo/unit tests/todo.spec.js

@@ -41,8 +41,26 @@ describe('add()', () => {
 			done()
 		}
 	})
-
+	
 	// New test goes HERE!
+	test('duplicates should increase qty', async done => {
+		expect.assertions(2)
+		try {
+			// ACT
+			todo.add('bread', 4)
+			todo.add('bread', 2)
+			// ASSERT
+			const count = todo.countItems()
+			expect(count).toBe(1)
+			const data = todo.getAll()
+			const qty = data[0].qty
+			expect(qty).toEqual(6)
+		} catch(err) {
+			done.fail('test failed')
+		} finally {
+			done()
+		}
+	})
 
 })
 

npm-debug.log

@@ -0,0 +1,19 @@
+0 info it worked if it ends with ok
+1 verbose cli [ '/usr/bin/node', '/usr/bin/npm', 'run', 'test' ]
+2 info using npm@3.5.2
+3 info using node@v8.10.0
+4 verbose stack Error: ENOENT: no such file or directory, open '/home/anir/foundation/package.json'
+5 verbose cwd /home/anir/foundation
+6 error Linux 5.0.0-23-generic
+7 error argv "/usr/bin/node" "/usr/bin/npm" "run" "test"
+8 error node v8.10.0
+9 error npm  v3.5.2
+10 error path /home/anir/foundation/package.json
+11 error code ENOENT
+12 error errno -2
+13 error syscall open
+14 error enoent ENOENT: no such file or directory, open '/home/anir/foundation/package.json'
+15 error enoent ENOENT: no such file or directory, open '/home/anir/foundation/package.json'
+15 error enoent This is most likely not a problem with npm itself
+15 error enoent and is related to npm not being able to find a file.
+16 verbose exit [ -2, true ]