Revert "Fix DueDate.StringDate conversion to and from DateTime. (#37)" (#39)

This reverts commit 465061e.

Author: olsh

src/Todoist.Net.Tests/Helpers/FakeLocalTimeZone.cs

@@ -2,35 +2,13 @@
 
 using Todoist.Net.Models;
 using Todoist.Net.Tests.Extensions;
-using Todoist.Net.Tests.Helpers;
-
 using Xunit;
 
 namespace Todoist.Net.Tests.Models
 {
     [Trait(Constants.TraitName, Constants.UnitTraitValue)]
-    public class DueDateTests : IDisposable
+    public class DueDateTests
     {
-
-        private readonly FakeLocalTimeZone _fakeLocalTimeZone;
-
-        public DueDateTests()
-        {
-            var timeZoneCollection = System.TimeZoneInfo.GetSystemTimeZones();
-
-            var randomIndex = new Random().Next(timeZoneCollection.Count);
-            var fakeTimeZoneInfo = timeZoneCollection[randomIndex];
-
-            _fakeLocalTimeZone = new FakeLocalTimeZone(fakeTimeZoneInfo);
-        }
-
-        public void Dispose()
-        {
-            _fakeLocalTimeZone.Dispose();
-            GC.SuppressFinalize(this);
-        }
-
-
         [Fact]
         public void DateTimeAssignment_FullDayEvent_Success()
         {
@@ -45,7 +23,7 @@ public void DateTimeAssignment_FullDayEvent_Success()
         [Fact]
         public void DateTimeAssignment_FloatingDueDateEvent_Success()
         {
-            var date = new DateTime(2018, 2, 5, 0, 0, 0, DateTimeKind.Unspecified);
+            var date = new DateTime(2018, 2, 5, 0, 0, 0, DateTimeKind.Utc);
 
             var dueDate = new DueDate(date);
 
@@ -63,54 +41,5 @@ public void DateTimeAssignment_FloatingDueDateWithTimezoneEvent_Success()
             Assert.Equal("2018-02-05T00:00:00Z", dueDate.StringDate);
             Assert.False(dueDate.IsFullDay);
         }
-
-
-        [Fact]
-        public void StringDateProperty_ShouldReturnExactAssignedValue_WhenValueIsFullDayDate()
-        {
-            // Arrange
-            var dueDate = new DueDate();
-            string initialValue = "2016-12-01";
-
-            // Act
-            dueDate.StringDate = initialValue; // Set initial value.
-            string returnedValue = dueDate.StringDate; // Get.
-            dueDate.StringDate = returnedValue; // Set returned value.
-
-            // Assert
-            Assert.Equal(returnedValue, dueDate.StringDate);
-        }
-
-        [Fact]
-        public void StringDateProperty_ShouldReturnExactAssignedValue_WhenValueIsFloatingDate()
-        {
-            // Arrange
-            var dueDate = new DueDate();
-            string initialValue = "2016-12-03T12:00:00";
-
-            // Act
-            dueDate.StringDate = initialValue; // Set initial value.
-            string returnedValue = dueDate.StringDate; // Get.
-            dueDate.StringDate = returnedValue; // Set returned value.
-
-            // Assert
-            Assert.Equal(returnedValue, dueDate.StringDate);
-        }
-
-        [Fact]
-        public void StringDateProperty_ShouldReturnExactAssignedValue_WhenValueIsFixedDate()
-        {
-            // Arrange
-            var dueDate = new DueDate();
-            string initialValue = "2016-12-06T13:00:00Z";
-
-            // Act
-            dueDate.StringDate = initialValue; // Set initial value.
-            string returnedValue = dueDate.StringDate; // Get.
-            dueDate.StringDate = returnedValue; // Set returned value.
-
-            // Assert
-            Assert.Equal(returnedValue, dueDate.StringDate);
-        }
     }
 }

src/Todoist.Net.Tests/Helpers/FakeLocalTimeZoneTests.cs

@@ -10,7 +10,6 @@ namespace Todoist.Net.Models
     /// </summary>
     public class DueDate
     {
-        private const string DefaultEventDateFormat = "yyyy-MM-ddTHH:mm:ssK"; // Roundtrip without milliseconds.
         private const string FullDayEventDateFormat = "yyyy-MM-dd";
 
         /// <summary>
@@ -125,7 +124,13 @@ internal string StringDate
                     return Date.Value.ToString(FullDayEventDateFormat);
                 }
 
-                return Date.Value.ToString(DefaultEventDateFormat);
+                var date = Date.Value.ToUniversalTime();
+                if (string.IsNullOrEmpty(Timezone))
+                {
+                    return date.ToString("s");
+                }
+
+                return date.ToString("s") + "Z";
             }
 
             set
@@ -138,7 +143,7 @@ internal string StringDate
                     return;
                 }
 
-                Date = DateTime.Parse(value, CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind);
+                Date = DateTime.Parse(value, CultureInfo.InvariantCulture);
             }
         }
     }