summaryrefslogtreecommitdiff
path: root/Xamarin.Forms.Core.UnitTests/DatePickerUnitTest.cs
blob: 25269edb93e934b369614ca73e387f4a3b0ebbce (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
using System;

using NUnit.Framework;

namespace Xamarin.Forms.Core.UnitTests
{
	[TestFixture]
	public class DatePickerUnitTest : BaseTestFixture
	{
		[Test]
		public void TestMinimumDateException ()
		{
			DatePicker picker = new DatePicker ();

			picker.MinimumDate = new DateTime (1950, 1, 1);

			Assert.AreEqual (new DateTime (1950, 1, 1), picker.MinimumDate);

			Assert.That (() => picker.MinimumDate = new DateTime (2200, 1, 1), Throws.ArgumentException);
		}

		[Test]
		public void TestMaximumDateException ()
		{
			DatePicker picker = new DatePicker ();
			
			picker.MaximumDate = new DateTime (2050, 1, 1);
			
			Assert.AreEqual (new DateTime (2050, 1, 1), picker.MaximumDate);

			Assert.That (() => picker.MaximumDate = new DateTime (1800, 1, 1), Throws.ArgumentException);
		}

		[Test]
		public void TestMaximumDateClamping ()
		{
			DatePicker picker = new DatePicker ();

			picker.Date = new DateTime (2050, 1, 1);

			Assert.AreEqual (new DateTime (2050, 1, 1), picker.Date);

			bool dateChanged = false;
			bool maximumDateChanged = false;
			picker.PropertyChanged += (sender, e) => {
				switch (e.PropertyName) {
				case "MaximumDate":
					maximumDateChanged = true;
					break;
				case "Date":
					dateChanged = true;
					Assert.IsFalse (maximumDateChanged);
					break;
				}
			};

			var newDate = new DateTime (2000, 1, 1);
			picker.MaximumDate = newDate;

			Assert.IsTrue (maximumDateChanged);
			Assert.IsTrue (dateChanged);

			Assert.AreEqual (newDate, picker.MaximumDate);
			Assert.AreEqual (newDate, picker.Date);
			Assert.AreEqual (picker.MaximumDate, picker.Date);
		}

		[Test]
		public void TestMinimumDateClamping ()
		{
			DatePicker picker = new DatePicker ();
			
			picker.Date = new DateTime (1950, 1, 1);
			
			Assert.AreEqual (new DateTime (1950, 1, 1), picker.Date);
			
			bool dateChanged = false;
			bool minimumDateChanged = false;
			picker.PropertyChanged += (sender, e) => {
				switch (e.PropertyName) {
				case "MinimumDate":
					minimumDateChanged = true;
					break;
				case "Date":
					dateChanged = true;
					Assert.IsFalse (minimumDateChanged);
					break;
				}
			};
			
			var newDate = new DateTime (2000, 1, 1);
			picker.MinimumDate = newDate;
			
			Assert.IsTrue (minimumDateChanged);
			Assert.IsTrue (dateChanged);
			
			Assert.AreEqual (newDate, picker.MinimumDate);
			Assert.AreEqual (newDate, picker.Date);
			Assert.AreEqual (picker.MinimumDate, picker.Date);
		}

		[Test]
		public void TestDateClamping ()
		{
			DatePicker picker = new DatePicker ();

			picker.Date = new DateTime (1500, 1, 1);

			Assert.AreEqual (picker.MinimumDate, picker.Date);

			picker.Date = new DateTime (2500, 1, 1);

			Assert.AreEqual (picker.MaximumDate, picker.Date);
		}

		[Test]
		public void TestDateSelected ()
		{
			var picker = new DatePicker ();

			bool selected = false;
			picker.DateSelected += (sender, arg) => selected = true;

			// we can be fairly sure it wont ever be 2008 again
			picker.Date = new DateTime (2008, 5, 5);

			Assert.True (selected);
		}

		//static object[] DateTimes = {
		//	new object[] { new DateTime (2006, 12, 20), new DateTime (2011, 11, 30) },
		//	new object[] { new DateTime (1900, 1, 1), new DateTime (1999, 01, 15) }, // Minimum Date
		//	new object[] { new DateTime (2006, 12, 20), new DateTime (2100, 12, 31) } // Maximum Date
		//};

		[Test, TestCaseSource("DateTimes")]
		public void DatePickerSelectedEventArgs (DateTime initialDate, DateTime finalDate)
		{
			var datePicker = new DatePicker ();
			datePicker.Date = initialDate;

			DatePicker pickerFromSender = null;
			DateTime oldDate = new DateTime ();
			DateTime newDate = new DateTime ();

			datePicker.DateSelected += (s, e) => {
				pickerFromSender = (DatePicker)s;
				oldDate = e.OldDate;
				newDate = e.NewDate;
			};

			datePicker.Date = finalDate;

			Assert.AreEqual (datePicker, pickerFromSender);
			Assert.AreEqual (initialDate, oldDate);
			Assert.AreEqual (finalDate, newDate);
		}

		[Test]
		//https://bugzilla.xamarin.com/show_bug.cgi?id=32144
		public void SetNullValueDoesNotThrow ()
		{
			var datePicker = new DatePicker ();
			Assert.DoesNotThrow (() => datePicker.SetValue (DatePicker.DateProperty, null));
			Assert.AreEqual (DatePicker.DateProperty.DefaultValue, datePicker.Date);
		}

		[Test]
		public void SetNullableDateTime ()
		{
			var datePicker = new DatePicker ();
			var dateTime = new DateTime (2015, 7, 21);
			DateTime? nullableDateTime = dateTime;
			datePicker.SetValue (DatePicker.DateProperty, nullableDateTime);
			Assert.AreEqual (dateTime, datePicker.Date);
		}
	}
}