public void PropSetters()
{
// Simple check of two kinds of setters
var setter = AssembledStyles.FontWeightSetter(700);
var baseStyle = new AssembledStyles();
var derivedStyle = baseStyle.WithProperties(setter);
Assert.That(derivedStyle.FontWeight, Is.EqualTo(700));
Assert.That(baseStyle.WithProperties(null), Is.EqualTo(baseStyle));
var setterRed = AssembledStyles.ForeColorSetter(Color.Red);
var derivedStyle2 = baseStyle.WithProperties(setterRed);
Assert.That(derivedStyle2.ForeColor.ToArgb(), Is.EqualTo(Color.Red.ToArgb()));
// Can't modify a setter that has been used.
Assert.Throws <ArgumentException>(() => setter.AppendProp(setterRed));
// Can combine two setters.
setter = AssembledStyles.FontWeightSetter(700);
setter.AppendProp(setterRed);
var derivedStyle3 = baseStyle.WithProperties(setter);
Assert.That(derivedStyle3.ForeColor.ToArgb(), Is.EqualTo(Color.Red.ToArgb()));
Assert.That(derivedStyle3.FontWeight, Is.EqualTo(700));
// Or even three.
setter = AssembledStyles.FontWeightSetter(700);
setterRed = AssembledStyles.ForeColorSetter(Color.Red);
var setterGreen = AssembledStyles.BackColorSetter(Color.Green);
setter.AppendProp(setterRed);
setter.AppendProp(setterGreen);
var derivedStyle4 = baseStyle.WithProperties(setter);
Assert.That(derivedStyle4.ForeColor.ToArgb(), Is.EqualTo(Color.Red.ToArgb()));
Assert.That(derivedStyle4.FontWeight, Is.EqualTo(700));
Assert.That(derivedStyle4.BackColor.ToArgb(), Is.EqualTo(Color.Green.ToArgb()));
// All three should be unavailable for modification.
var anotherSetter = AssembledStyles.FontWeightSetter(600);
Assert.Throws <ArgumentException>(() => setter.AppendProp(anotherSetter));
Assert.Throws <ArgumentException>(() => setterRed.AppendProp(anotherSetter));
Assert.Throws <ArgumentException>(() => setterGreen.AppendProp(anotherSetter));
// For efficiency we want custom equality on setters.
var setterCopy = AssembledStyles.FontWeightSetter(700);
var setterRedCopy = AssembledStyles.ForeColorSetter(Color.Red);
var setterGreenCopy = AssembledStyles.BackColorSetter(Color.Green);
setterCopy.AppendProp(setterRedCopy);
setterCopy.AppendProp(setterGreenCopy);
Assert.That(setterGreen, Is.EqualTo(setterGreenCopy));
Assert.That(setter, Is.EqualTo(setterCopy));
Assert.That(setter.GetHashCode(), Is.EqualTo(setterCopy.GetHashCode()));
// Minimal testing on the rest
Assert.That(baseStyle.WithProperties(AssembledStyles.UnderlineColorSetter(Color.Yellow)).UnderlineColor.ToArgb(),
Is.EqualTo(Color.Yellow.ToArgb()));
Assert.That(baseStyle.WithProperties(AssembledStyles.UnderlineSetter(FwUnderlineType.kuntStrikethrough)).Underline,
Is.EqualTo(FwUnderlineType.kuntStrikethrough));
Assert.That(baseStyle.WithProperties(AssembledStyles.FontSizeSetter(13000)).FontSize,
Is.EqualTo(13000));
Assert.That(baseStyle.WithProperties(AssembledStyles.BaselineOffsetSetter(2000)).BaselineOffset,
Is.EqualTo(2000));
Assert.That(baseStyle.WithProperties(AssembledStyles.FontItalicSetter(FwTextToggleVal.kttvForceOn)).FontItalic,
Is.True);
var italicStyle = baseStyle.WithProperties(AssembledStyles.FontItalicSetter(FwTextToggleVal.kttvInvert));
Assert.That(italicStyle.FontItalic, Is.True);
Assert.That(italicStyle.WithProperties(AssembledStyles.FontItalicSetter(FwTextToggleVal.kttvInvert)).FontItalic,
Is.False);
Assert.That(baseStyle.WithProperties(AssembledStyles.FaceNameSetter("Symbol")).FaceName,
Is.EqualTo("Symbol"));
Assert.That(baseStyle.WithProperties(AssembledStyles.RtlSetter(true)).RightToLeft, Is.True);
}