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); } } }