public void IntermediateNodeWalker_Visit_TraversesEntireGraph()
{
// Arrange
var walker = new DerivedIntermediateNodeWalker();
var nodes = new IntermediateNode[]
{
new BasicIntermediateNode("Root"),
new BasicIntermediateNode("Root->A"),
new BasicIntermediateNode("Root->B"),
new BasicIntermediateNode("Root->B->1"),
new BasicIntermediateNode("Root->B->2"),
new BasicIntermediateNode("Root->C"),
};
var builder = new DefaultRazorIntermediateNodeBuilder();
builder.Push(nodes[0]);
builder.Add(nodes[1]);
builder.Push(nodes[2]);
builder.Add(nodes[3]);
builder.Add(nodes[4]);
builder.Pop();
builder.Add(nodes[5]);
var root = builder.Pop();
// Act
walker.Visit(root);
// Assert
Assert.Equal(nodes, walker.Visited.ToArray());
}
public void Ctor_CreatesEmptyBuilder()
{
// Arrange & Act
var builder = new DefaultRazorIntermediateNodeBuilder();
var current = builder.Current;
// Assert
Assert.Null(current);
}
public void Pop_ThrowsWhenEmpty()
{
// Arrange
var builder = new DefaultRazorIntermediateNodeBuilder();
// Act & Assert
ExceptionAssert.Throws <InvalidOperationException>(
() => builder.Pop(),
"The 'Pop' operation is not valid when the builder is empty.");
}
public static IntermediateNodeBuilder Create(IntermediateNode root)
{
if (root == null)
{
throw new ArgumentNullException(nameof(root));
}
var builder = new DefaultRazorIntermediateNodeBuilder();
builder.Push(root);
return(builder);
}
public void Push_WhenEmpty_AddsNode()
{
// Arrange
var builder = new DefaultRazorIntermediateNodeBuilder();
var node = new BasicIntermediateNode();
// Act
builder.Push(node);
// Assert
Assert.Same(node, builder.Current);
}
public void Pop_SingleNodeDepth_RemovesAndReturnsNode()
{
// Arrange
var builder = new DefaultRazorIntermediateNodeBuilder();
var node = new BasicIntermediateNode();
builder.Push(node);
// Act
var result = builder.Pop();
// Assert
Assert.Same(node, result);
Assert.Null(builder.Current);
}
public void IntermediateNodeWalker_Visit_SetsParentAndAncestors()
{
// Arrange
var walker = new DerivedIntermediateNodeWalker();
var nodes = new IntermediateNode[]
{
new BasicIntermediateNode("Root"),
new BasicIntermediateNode("Root->A"),
new BasicIntermediateNode("Root->B"),
new BasicIntermediateNode("Root->B->1"),
new BasicIntermediateNode("Root->B->2"),
new BasicIntermediateNode("Root->C"),
};
var ancestors = new Dictionary <string, string[]>()
{
{ "Root", new string[] { } },
{ "Root->A", new string[] { "Root" } },
{ "Root->B", new string[] { "Root" } },
{ "Root->B->1", new string[] { "Root->B", "Root" } },
{ "Root->B->2", new string[] { "Root->B", "Root" } },
{ "Root->C", new string[] { "Root" } },
};
walker.OnVisiting = (n) =>
{
Assert.Equal(ancestors[((BasicIntermediateNode)n).Name], walker.Ancestors.Cast <BasicIntermediateNode>().Select(b => b.Name));
Assert.Equal(ancestors[((BasicIntermediateNode)n).Name].FirstOrDefault(), ((BasicIntermediateNode)walker.Parent)?.Name);
};
var builder = new DefaultRazorIntermediateNodeBuilder();
builder.Push(nodes[0]);
builder.Add(nodes[1]);
builder.Push(nodes[2]);
builder.Add(nodes[3]);
builder.Add(nodes[4]);
builder.Pop();
builder.Add(nodes[5]);
var root = builder.Pop();
// Act & Assert
walker.Visit(root);
}
public void Push_WhenNonEmpty_SetsUpChild()
{
// Arrange
var builder = new DefaultRazorIntermediateNodeBuilder();
var parent = new BasicIntermediateNode();
builder.Push(parent);
var node = new BasicIntermediateNode();
// Act
builder.Push(node);
// Assert
Assert.Same(node, builder.Current);
Assert.Collection(parent.Children, n => Assert.Same(node, n));
}
public void Insert_AddsToChildren_EmptyCollection()
{
// Arrange
var builder = new DefaultRazorIntermediateNodeBuilder();
var parent = new BasicIntermediateNode();
builder.Push(parent);
var node = new BasicIntermediateNode();
// Act
builder.Insert(0, node);
// Assert
Assert.Same(parent, builder.Current);
Assert.Collection(parent.Children, n => Assert.Same(node, n));
}
public void Build_PopsMultipleLevels()
{
// Arrange
var builder = new DefaultRazorIntermediateNodeBuilder();
var document = new DocumentIntermediateNode();
builder.Push(document);
var node = new BasicIntermediateNode();
builder.Push(node);
// Act
var result = builder.Build();
// Assert
Assert.Same(document, result);
Assert.Null(builder.Current);
}
