public void TestNextComponent(string pathString, int numberOfCalls, bool expectedResult)
{
// Arrange
var path = Path.Create(pathString);
var sut = new PathWalker(path);
bool result = false;
// Act
for(int i = 0; i < numberOfCalls; i++)
{
result = sut.NextComponent();
}
// Assert
Assert.AreEqual(expectedResult, result);
}
public void TestCurrentComponent(string pathString, int component, int expectedPartCount)
{
// Arrange
var path = Path.Create(pathString);
var sut = new PathWalker(path);
int result = 0;
// Act
for(int i = 0; i < component; i++)
{
sut.NextComponent();
result = sut.CurrentComponent.Parts.Count;
}
// Assert
Assert.AreEqual(expectedPartCount, result);
}
public void TestCurrentPart(string pathString, int component, int part, string expectedValue)
{
// Arrange
var path = Path.Create(pathString);
var sut = new PathWalker(path);
for(int i = 0; i < component; i++)
{
sut.NextComponent();
}
// Act
for(int i = 0; i < part; i++)
{
sut.NextPart();
}
// Assert
Assert.NotNull(sut.CurrentPart, "Result nullability");
Assert.AreEqual(expectedValue, sut.CurrentPart.Value, "Result value");
}
/// <summary>
/// Walks and evaluates a TALES path.
/// </summary>
/// <returns>The evaluated value of the path.</returns>
/// <param name="walker">A TALES path walker, containing a path.</param>
/// <param name="context">The rendering context for the expression being evaluated.</param>
/// <param name="model">The ZPT model, providing the context for evaluation.</param>
private object WalkPath(PathWalker walker, IRenderingContext context, ITalesModel model)
{
object output = null;
bool success = false;
while(walker.NextComponent() && !success)
{
success = this.WalkComponent(walker, context, model, out output);
}
if(!success)
{
throw new TraversalException(Resources.ExceptionMessages.CouldNotWalkAnyPaths);
}
return output;
}
public void TestReset()
{
// Arrange
var path = Path.Create("foo/bar|wibble/wobble");
var sut = new PathWalker(path);
sut.NextComponent();
sut.NextComponent();
sut.NextPart();
sut.NextPart();
// Act
sut.Reset();
// Assert
Assert.IsTrue(sut.NextComponent(), "NextComponent result");
Assert.IsTrue(sut.NextPart(), "NextPart result");
Assert.AreEqual("foo", sut.CurrentPart.Value, "CurrentPart");
}