public void GivenACSSSource_WhenMergingAnotherCSSSource_AUnionOfRulesInBothSourcesShouldBeReturnedWhenRulesDoNotConflict()
{
const string css1 = @"#myDiv { font-family: Arial, Helvetica, sans-serif; }";
var cssDocument1 = new CSSParser().ParseText(css1);
var cssSource1 = new CSSSource(cssDocument1);
const string css2 = @"div { font-family: Arial, Helvetica, sans-serif; }";
var cssDocument2 = new CSSParser().ParseText(css2);
var cssSource2 = new CSSSource(cssDocument2);
var cssSource3 = cssSource1.Merge(cssSource2);
Assert.Equal(cssSource3.Rulesets.Count(), 2);
Assert.Equal(cssSource3.Rulesets.First().Selectors[0].ToString(), "#myDiv");
Assert.Equal(cssSource3.Rulesets.First().Declarations[0].ToString(), "font-family: Arial, Helvetica, sans-serif");
Assert.Equal(cssSource3.Rulesets.Last().Selectors[0].ToString(), "div");
Assert.Equal(cssSource3.Rulesets.Last().Declarations[0].ToString(), "font-family: Arial, Helvetica, sans-serif");
}
public void GivenACSSSource_WhenMergingAnotherCssSource_RulesInTheOriginalCSSSourceShouldHavePrecedence()
{
const string css1 = @"
#myDiv { font-family: Arial, Helvetica, sans-serif; }
div { font-family: Times New Roman, sans-serif; }";
var cssDocument1 = new CSSParser().ParseText(css1);
var cssSource1 = new CSSSource(cssDocument1);
const string css2 = @"
#myDiv { font-family: Times New Roman, sans-serif; }
div { font-family: Arial, Helvetica, sans-serif; }";
var cssDocument2 = new CSSParser().ParseText(css2);
var cssSource2 = new CSSSource(cssDocument2);
var cssSource3 = cssSource1.Merge(cssSource2);
Assert.Equal(cssSource3.Rulesets.Count(), 2);
Assert.Equal(cssSource3.Rulesets.First().Selectors[0].ToString(), "#myDiv");
Assert.Equal(cssSource3.Rulesets.First().Declarations[0].ToString(), "font-family: Arial, Helvetica, sans-serif");
Assert.Equal(cssSource3.Rulesets.Last().Selectors[0].ToString(), "div");
Assert.Equal(cssSource3.Rulesets.Last().Declarations[0].ToString(), "font-family: Times New Roman, sans-serif");
}
public void GivenACSSSource_WhenMergingAnotherCssSource_ShouldThrowAnArgumentNullExceptionIfTheOtherCSSSourceIsNull()
{
var cssSource = new CSSSource(new CSSParser().ParseText("{}"));
Assert.Throws(typeof (ArgumentNullException), () => cssSource.Merge(null));
}
