public void Format_UIText_From_Value()
        {
            // ReSharper disable once UseObjectOrCollectionInitializer
            var sut = new NZazuDateField(new FieldDefinition {
                Key = "key"
            }, ServiceLocator);
            const string dateFormat = "yyyy_MM_dd";

            sut.Definition.Settings.Add("Format", dateFormat);
            var datePicker = (DatePicker)sut.ValueControl;

            sut.Value.Should().NotHaveValue();
            datePicker.Text.Should().BeEmpty();

            var now = DateTime.Now.Date;

            sut.Value = now;
            var expected = now.ToString(dateFormat);

            sut.GetValue().Should().Be(expected);

            // NOTE: Formatted Dates seems complicated to setup with DatePicker
            // So we just skip it. It it only vital that StringValue matches the speicifed format
            // The UI is sugar.
            //datePicker.Text.Should().Be(expected);

            sut.Value = null;
            sut.GetValue().Should().BeEmpty();
            datePicker.SelectedDate.Should().NotHaveValue();
        }
        public void Format_StringValue_From_TextBox()
        {
            var sut = new NZazuDateField(new FieldDefinition {
                Key = "key"
            }, ServiceLocator);
            var datePicker = (DatePicker)sut.ValueControl;

            var now = DateTime.Now.Date;

            datePicker.SelectedDate = now;
            sut.GetValue().Should().Be(now.ToString(CultureInfo.InvariantCulture));

            datePicker.SelectedDate = null;
            sut.IsValid().Should().BeTrue();
            sut.GetValue().Should().Be("");

            datePicker.Text = null;
            sut.IsValid().Should().BeTrue();
            sut.GetValue().Should().Be(string.Empty);
        }
        public void Consider_DateFormat_in_StringValue()
        {
            var sut = new NZazuDateField(new FieldDefinition {
                Key = "key"
            }, ServiceLocator);

            // DateFormat unspecified
            var date    = DateTime.UtcNow;
            var dateStr = date.ToString(CultureInfo.InvariantCulture);

            sut.SetValue(dateStr);
            sut.Value.Should().BeCloseTo(date, 1000, "parsing truncates millis");

            date     += TimeSpan.FromSeconds(1);
            dateStr   = date.ToString(CultureInfo.InvariantCulture);
            sut.Value = date;
            sut.GetValue().Should().Be(dateStr);

            // now specify DateFormat
            const string dateFormat = "yyyy-MMM-dd";

            sut.DateFormat = dateFormat;

            dateStr = date.ToString(dateFormat, CultureInfo.InvariantCulture);
            sut.GetValue().Should().Be(dateStr);

            date     -= TimeSpan.FromDays(60);
            dateStr   = date.ToString(dateFormat, CultureInfo.InvariantCulture);
            sut.Value = date;
            sut.GetValue().Should().Be(dateStr);

            date   += TimeSpan.FromDays(2);
            date    = date.Date; // truncate time (we only check date --> format)
            dateStr = date.ToString(dateFormat, CultureInfo.InvariantCulture);
            sut.SetValue(dateStr);
            sut.Value.Should().Be(date);
        }
        public void Format_TextBox_From_StringValue()
        {
            var sut = new NZazuDateField(new FieldDefinition {
                Key = "key"
            }, ServiceLocator);
            var datePicker = (DatePicker)sut.ValueControl;

            sut.GetValue().Should().BeNullOrEmpty();
            datePicker.Text.Should().BeEmpty();

            var now = DateTime.Now.Date;

            sut.SetValue(now.ToString(CultureInfo.InvariantCulture));
            datePicker.SelectedDate.Should().Be(now);

            sut.SetValue(string.Empty);
            datePicker.SelectedDate.Should().NotHaveValue();
        }