From f6f92f11e76e0e340f8ec9cb72e3194ebab771ef Mon Sep 17 00:00:00 2001
From: riipah <riipah@vocadb.net>
Date: Sun, 3 Jun 2018 15:10:21 +0300
Subject: [PATCH] fix resetting date

---
 VocaDbWeb/Scripts/Helpers/DateTimeHelper.ts   |  8 +++++--
 .../BindingHandlers/DatePicker.ts             |  6 ++---
 .../Tests/Helpers/DateTimeHelperTests.ts      | 22 ++++++++++++++++---
 3 files changed, 28 insertions(+), 8 deletions(-)

diff --git a/VocaDbWeb/Scripts/Helpers/DateTimeHelper.ts b/VocaDbWeb/Scripts/Helpers/DateTimeHelper.ts
index e91605f2d4..bce3c4fc7b 100644
--- a/VocaDbWeb/Scripts/Helpers/DateTimeHelper.ts
+++ b/VocaDbWeb/Scripts/Helpers/DateTimeHelper.ts
@@ -1,4 +1,4 @@
-
+
 module vdb.helpers {
 	
 	export class DateTimeHelper {
@@ -7,13 +7,17 @@ module vdb.helpers {
 			return (val < 10 ? "0" + val : val);
 		}
 
-		public static converToLocal(utcDate: Date) {
+		public static convertToLocal(utcDate: Date) {
+			if (utcDate == null)
+				return null;
 			const momentDate = moment.utc(utcDate);
 			return new Date(momentDate.year(), momentDate.month(), momentDate.date());
 			//return new Date(utcDate.getFullYear(), utcDate.getMonth(), utcDate.getDate());
 		}
 
 		public static convertToUtc(localDate: Date) {
+			if (localDate == null)
+				return null;
 			return moment.utc([localDate.getFullYear(), localDate.getMonth(), localDate.getDate()]).toDate();
 		}
 
diff --git a/VocaDbWeb/Scripts/KnockoutExtensions/BindingHandlers/DatePicker.ts b/VocaDbWeb/Scripts/KnockoutExtensions/BindingHandlers/DatePicker.ts
index 023edf65d6..5ecbd82336 100644
--- a/VocaDbWeb/Scripts/KnockoutExtensions/BindingHandlers/DatePicker.ts
+++ b/VocaDbWeb/Scripts/KnockoutExtensions/BindingHandlers/DatePicker.ts
@@ -1,4 +1,4 @@
-
+
 interface KnockoutBindingHandlers {
 	datepicker: KnockoutBindingHandler;
 }
@@ -19,13 +19,13 @@ ko.bindingHandlers.datepicker = {
 		$(element).datepicker({ dateFormat: options.dateFormat });
 
 		if (value) {
-			$(element).datepicker('setDate', vdb.helpers.DateTimeHelper.converToLocal(value));
+			$(element).datepicker('setDate', vdb.helpers.DateTimeHelper.convertToLocal(value));
 		}
 
 		if (ko.isObservable(options.value)) {
 			var subscription = options.value.subscribe((newValue: Date) => {
 				// datepicker displays time in local time, so we convert it back to local
-				$(element).datepicker('setDate', vdb.helpers.DateTimeHelper.converToLocal(newValue));
+				$(element).datepicker('setDate', vdb.helpers.DateTimeHelper.convertToLocal(newValue));
 			});
 
 			ko.utils.domNodeDisposal.addDisposeCallback(element, () => {
diff --git a/VocaDbWeb/Scripts/Tests/Helpers/DateTimeHelperTests.ts b/VocaDbWeb/Scripts/Tests/Helpers/DateTimeHelperTests.ts
index c8101d7b96..926e5a65dd 100644
--- a/VocaDbWeb/Scripts/Tests/Helpers/DateTimeHelperTests.ts
+++ b/VocaDbWeb/Scripts/Tests/Helpers/DateTimeHelperTests.ts
@@ -1,19 +1,27 @@
-
+
 module vdb.tests.helpers {
 
 	QUnit.module("DateTimeHelper");
 
-	QUnit.test("converToLocal", () => {
+	QUnit.test("convertToLocal", () => {
 
 		var date = new Date(2016, 9, 3);
 		date.setMinutes(date.getMinutes() - date.getTimezoneOffset());
-		var result = vdb.helpers.DateTimeHelper.converToLocal(date);
+		var result = vdb.helpers.DateTimeHelper.convertToLocal(date);
 		var expected = new Date(2016, 9, 3);
 
 		QUnit.equal(result.toString(), expected.toString());
 
 	});
 
+	QUnit.test("convertToLocal null", () => {
+
+		var result = vdb.helpers.DateTimeHelper.convertToLocal(null);
+
+		QUnit.equal(result, null, "result");
+
+	});
+
 	QUnit.test("convertToUtc", () => {
 
 		var date = new Date(2016, 9, 3);
@@ -24,4 +32,12 @@ module vdb.tests.helpers {
 
 	});
 
+	QUnit.test("convertToUtc null", () => {
+
+		var result = vdb.helpers.DateTimeHelper.convertToUtc(null);
+
+		QUnit.equal(result, null, "result");
+
+	});
+
 }
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