Add Unit tests from less.js to catch bugs/features/differences

src/dotless.Test/Specs/CssFixture.cs

@@ -308,6 +308,28 @@ public void CheckUrlWithDataNotQuoted()
   background: #eeeeee url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAABlBMVEX///////9VfPVsAAAACklEQVQImWNgAAAAAgAB9HFkpgAAAABJRU5ErkJggg%3D%3D) repeat-y 13em 0;
 }";
             AssertLessUnchanged(input);
+        }
+
+		[Test]
+		[Ignore("Bug in dotless")]
+        public void HttpUrl()
+        {
+			// In MatchAny where we consider if we hit a comment token, instead of changing
+			// it to text we should re-parse the comment?
+			// or does the tokenizer need to be aware of url() as a special case? (see next bug)
+            AssertExpressionUnchanged(@"image: url(http://), ""}"", url(""http://}"")");
+        }
+
+		[Test]
+		[Ignore("Bug in dotless")]
+        public void HttpUrl2()
+        {
+			var input = @".trickyurl {
+image: url(http://); }";
+			var expected = @".trickyurl {
+  image: url(http://);
+}";
+            AssertLess(input, expected);
         }
     }
 }

src/dotless.Test/Specs/Functions/FormatStringFixture.cs

@@ -72,5 +72,92 @@ public void FormatGradients()
 
             AssertLess(input, expected);
         }
+
+		[Test]
+		[Ignore("Supported by less.js, not by dotless")]
+		public void EscapeFunction()
+		{
+			var input = @"
+#builtin {
+  @r: 32;
+  escaped: e(""-Some::weird(#thing, y)"");
+}
+";
+			var expected = @"
+#built-in {
+  escaped: -Some::weird(#thing, y);
+}";
+
+			AssertLess(input, expected);
+		}
+
+		[Test]
+		[Ignore("Supported by less.js, not by dotless")]
+		public void ShortFormatFunction()
+		{
+			var input = @"
+#builtin {
+  @r: 32;
+  format: %(""rgb(%d, %d, %d)"", @r, 128, 64);
+}
+";
+			var expected = @"
+#built-in {
+  format: ""rgb(32, 128, 64)"";
+}";
+
+			AssertLess(input, expected);
+		}
+
+		[Test]
+		[Ignore("Supported by less.js, not by dotless")]
+		public void ShortFormatFunctionAcceptingString()
+		{
+			var input = @"
+#builtin {
+  format-string: %(""hello %s"", ""world"");
+}
+";
+			var expected = @"
+#built-in {
+  format-string: ""hello world"";
+}";
+
+			AssertLess(input, expected);
+		}
+
+		[Test]
+		[Ignore("Supported by less.js, not by dotless")]
+		public void ShortFormatFunctionUrlEncode()
+		{
+			var input = @"
+#builtin {
+  format-url-encode: %('red is %A', #ff0000);
+}
+";
+			var expected = @"
+#built-in {
+  format-url-encode: ""red is %23ff0000"";
+}";
+
+			AssertLess(input, expected);
+		}
+
+		[Test]
+		[Ignore("Supported by less.js, not by dotless")]
+		public void EscapeAndShortFormatFunction()
+		{
+			var input = @"
+#builtin {
+  eformat: e(%(""rgb(%d, %d, %d)"", @r, 128, 64));
+}
+";
+			var expected = @"
+#built-in {
+  eformat: rgb(32, 128, 64);
+}";
+
+			AssertLess(input, expected);
+		}
     }
 }