public void UpdatesHidePropertyWhenWatermarkTextIsSet(string initialText, bool hide)
{
TextBox box;
box = new TextBox {
Text = initialText
};
Watermark.SetText(box, "foo");
Assert.Equal(hide, Watermark.GetHide(box));
}
public void SetsHideToTrueWhenTheTextBoxContainsWhitespace()
{
TextBox box;
box = new TextBox();
Watermark.SetText(box, "foo");
Assert.False(Watermark.GetHide(box));
box.Text = " ";
Assert.True(Watermark.GetHide(box));
}
public void SetsHideToFalseWhenTheTextBoxDoesNotContainText(string watermark)
{
TextBox box;
box = new TextBox();
Watermark.SetText(box, "foo");
box.Text = "bar";
Assert.True(Watermark.GetHide(box));
box.Text = watermark;
Assert.False(Watermark.GetHide(box));
}
public void StopsUpdatingWhenWatermarkTextIsCleared()
{
TextBox box;
box = new TextBox();
Watermark.SetText(box, "foo");
box.Text = "bar";
Assert.True(Watermark.GetHide(box));
#pragma warning disable CS8625 // Cannot convert null literal to non-nullable reference type.
Watermark.SetText(box, null);
#pragma warning restore CS8625 // Cannot convert null literal to non-nullable reference type.
Assert.False(Watermark.GetHide(box));
box.Text = "";
Assert.False(Watermark.GetHide(box));
box.Text = "bar";
Assert.False(Watermark.GetHide(box));
}