public void From_CSSTest()
{
CssValue Value;
/* Ensure that null values are handled correctly */
Value = CssValue.From_CSS("");
Assert.True(!Value.HasValue);
Assert.Equal(ECssValueTypes.NULL, Value.Type);
Value = CssValue.From_CSS(" ");
Assert.True(!Value.HasValue);
Assert.Equal(ECssValueTypes.NULL, Value.Type);
/* Test dimension parsing */
Value = CssValue.From_CSS("100px");
Assert.True(Value.HasValue);
Assert.Equal(ECssUnit.PX, Value.Unit);
Assert.Equal(100, Value.AsInteger());
Assert.Equal(ECssValueTypes.DIMENSION, Value.Type);
Value = CssValue.From_CSS("1ch");
Assert.True(Value.HasValue);
Assert.Equal(ECssUnit.CH, Value.Unit);
Assert.Equal(1, Value.AsInteger());
Assert.Equal(ECssValueTypes.DIMENSION, Value.Type);
Value = CssValue.From_CSS("1em");
Assert.True(Value.HasValue);
Assert.Equal(ECssUnit.EM, Value.Unit);
Assert.Equal(1, Value.AsInteger());
Assert.Equal(ECssValueTypes.DIMENSION, Value.Type);
Value = CssValue.From_CSS("96dpi");
Assert.True(Value.HasValue);
Assert.Equal(ECssUnit.DPI, Value.Unit);
Assert.Equal(96, Value.AsInteger());
Assert.Equal(ECssValueTypes.RESOLUTION, Value.Type);
Value = CssValue.From_CSS("1dppx");
Assert.True(Value.HasValue);
Assert.Equal(ECssUnit.DPPX, Value.Unit);
Assert.Equal(1, Value.AsInteger());
Assert.Equal(ECssValueTypes.RESOLUTION, Value.Type);
/* Check some global keywords to make sure those are being converted to the correct type flag */
Value = CssValue.From_CSS("auto");
Assert.True(Value.HasValue);
Assert.True(Value.IsAuto);
Assert.Equal(ECssValueTypes.AUTO, Value.Type);
Value = CssValue.From_CSS("none");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.NONE, Value.Type);
Value = CssValue.From_CSS("initial");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.INITIAL, Value.Type);
Value = CssValue.From_CSS("inherit");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.INHERIT, Value.Type);
Value = CssValue.From_CSS("unset");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.UNSET, Value.Type);
Value = CssValue.From_CSS("default");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.DEFAULT, Value.Type);
/* Check custom keywords */
Value = CssValue.From_CSS("hidden");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.KEYWORD, Value.Type);
Assert.Equal("hidden", Value.AsString());
Value = CssValue.From_CSS("sans-serif");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.KEYWORD, Value.Type);
Assert.Equal(EGenericFontFamily.SansSerif, Value.AsEnum <EGenericFontFamily>());
Assert.Equal("sans-serif", Value.AsString());
/* Check strings */
Value = CssValue.From_CSS("\"Hello World!\"");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.STRING, Value.Type);
Assert.Equal("Hello World!", Value.AsString());
/* Check percentages */
Value = CssValue.From_CSS("100%");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.PERCENT, Value.Type);
Assert.Equal(100, Value.AsDecimal());
Value = CssValue.From_CSS("1%");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.PERCENT, Value.Type);
Assert.Equal(1, Value.AsDecimal());
/* Check numbers */
Value = CssValue.From_CSS("100.5");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.NUMBER, Value.Type);
Assert.Equal(100.5, Value.AsDecimal());
Value = CssValue.From_CSS("1.25");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.NUMBER, Value.Type);
Assert.Equal(1.25, Value.AsDecimal());
/* Check integers */
Value = CssValue.From_CSS("100");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.INTEGER, Value.Type);
Assert.Equal(100, Value.AsInteger());
Value = CssValue.From_CSS("1");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.INTEGER, Value.Type);
Assert.Equal(1, Value.AsInteger());
/* Check functions */
Value = CssValue.From_CSS("calc(1 / 100 + 5)");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.FUNCTION, Value.Type);
Assert.Equal(100.0, Value.AsDecimal());
/* Check positions */
Value = CssValue.From_CSS(" left 50% ");
Assert.True(Value.HasValue);
Assert.Equal(ECssValueTypes.POSITION, Value.Type);
Assert.Equal(100.0, Value.AsDecimal());
}