Merge pull request #53 from brockpetrie/input-parsing

Input parsing

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-moment",
-  "version": "2.2.0",
+  "version": "3.0.0",
   "description": "Handy Moment.js filters for your Vue.js project",
   "main": "vue-moment.js",
   "scripts": {

readme.md

@@ -37,6 +37,8 @@ Moment.js expects your input to be either: a valid ISO 8601 formatted string (se
 <span>{{ [ someDate, ["MM.DD.YY", "MM-DD-YY", "MM-DD-YYYY"] ] | moment("dddd, MMMM Do YYYY") }}</span>
 ```
 
+As of 3.0.0, passing an empty or invalid input will no longer initiate moment with a new `Date` object.
+
 ## Filtering Methods
 
 ### format (default)

tests/vue-moment.spec.js

@@ -6,7 +6,7 @@ Vue.use(VueMoment, {
     moment,
 })
 
-const now = moment()
+let now = moment()
 const tomorrow = moment().add(1, 'day')
 
 const vm = new Vue({
@@ -117,4 +117,69 @@ describe('VueMoment', () => {
         })
     })
 
+    describe('handle inputs', () => {
+        beforeEach(() => {
+            global.console.warn = jest.fn()  
+        })
+
+        afterAll(() => {
+            vm.now = moment()
+        }) 
+
+        it('handles string', (done) => {
+            vm.now = '2017-01-01'
+            vm.args = ['YYYY-MM-DD']
+            vm.$nextTick(() => {
+                expect(console.warn).not.toBeCalled()
+                expect(vm.$el.textContent).toContain('2017-01-01')                
+                done()
+            })
+        })
+
+        it('handles object', (done) => {
+            vm.now = {y: 2017, m: 1, d: 1}
+            vm.args = ['YYYY-MM-DD']
+            vm.$nextTick(() => {
+                expect(console.warn).not.toBeCalled()
+                expect(vm.$el.textContent).toContain('2017-01-01')                
+                done()
+            })
+        })
+
+        it('handles Date object', (done) => {
+            vm.now = new Date(2017, 0, 1);
+            vm.args = ['YYYY-MM-DD']
+            vm.$nextTick(() => {
+                expect(console.warn).not.toBeCalled()
+                expect(vm.$el.textContent).toContain('2017-01-01')                
+                done()
+            })
+        })
+
+        it('handles Moment object', (done) => {
+            vm.now = moment('2017-01-01')
+            vm.args = ['YYYY-MM-DD']
+            vm.$nextTick(() => {
+                expect(console.warn).not.toBeCalled()
+                expect(vm.$el.textContent).toContain('2017-01-01')                
+                done()
+            })
+        })
+
+        it('handles undefined', (done) => {
+            vm.now = undefined
+            vm.$nextTick(() => {
+                expect(console.warn).toBeCalled()
+                done()
+            })
+        })
+
+        it('handles invalid string', (done) => {
+            vm.now = 'foo'
+            vm.$nextTick(() => {
+                expect(console.warn).toBeCalled()
+                done()
+            })
+        })
+    })
 })

vue-moment.js

@@ -31,7 +31,7 @@ module.exports = {
 				date = moment(input);
 			}
 
-			if (!date.isValid()) {
+			if (!input || !date.isValid()) {
 				// Log a warning if moment couldn't reconcile the input. Better than throwing an error?
 				console.warn('Could not build a valid `moment` object from input.');
 				return input;