public void Execute_ThrowsForMissingDependency()
    {
        // Arrange
        var phase = new DefaultRazorDirectiveClassifierPhase();

        var engine = RazorProjectEngine.CreateEmpty(b => b.Phases.Add(phase));

        var codeDocument = TestRazorCodeDocument.CreateEmpty();

        // Act & Assert
        ExceptionAssert.Throws <InvalidOperationException>(
            () => phase.Execute(codeDocument),
            $"The '{nameof(DefaultRazorDirectiveClassifierPhase)}' phase requires a '{nameof(DocumentIntermediateNode)}' " +
            $"provided by the '{nameof(RazorCodeDocument)}'.");
    }
    public void Execute_ExecutesPhasesInOrder()
    {
        // Arrange
        var codeDocument = TestRazorCodeDocument.CreateEmpty();

        // We're going to set up mocks to simulate a sequence of passes. We don't care about
        // what's in the nodes, we're just going to look at the identity via strict mocks.
        var originalNode   = new DocumentIntermediateNode();
        var firstPassNode  = new DocumentIntermediateNode();
        var secondPassNode = new DocumentIntermediateNode();

        codeDocument.SetDocumentIntermediateNode(originalNode);

        var firstPass = new Mock <IRazorDirectiveClassifierPass>(MockBehavior.Strict);

        firstPass.SetupGet(m => m.Order).Returns(0);
        firstPass.SetupProperty(m => m.Engine);
        firstPass.Setup(m => m.Execute(codeDocument, originalNode)).Callback(() =>
        {
            originalNode.Children.Add(firstPassNode);
        });

        var secondPass = new Mock <IRazorDirectiveClassifierPass>(MockBehavior.Strict);

        secondPass.SetupGet(m => m.Order).Returns(1);
        secondPass.SetupProperty(m => m.Engine);
        secondPass.Setup(m => m.Execute(codeDocument, originalNode)).Callback(() =>
        {
            // Works only when the first pass has run before this.
            originalNode.Children[0].Children.Add(secondPassNode);
        });

        var phase = new DefaultRazorDirectiveClassifierPhase();

        var engine = RazorProjectEngine.CreateEmpty(b =>
        {
            b.Phases.Add(phase);

            b.Features.Add(firstPass.Object);
            b.Features.Add(secondPass.Object);
        });

        // Act
        phase.Execute(codeDocument);

        // Assert
        Assert.Same(secondPassNode, codeDocument.GetDocumentIntermediateNode().Children[0].Children[0]);
    }
    public void OnInitialized_OrdersPassesInAscendingOrder()
    {
        // Arrange & Act
        var phase = new DefaultRazorDirectiveClassifierPhase();

        var first  = Mock.Of <IRazorDirectiveClassifierPass>(p => p.Order == 15);
        var second = Mock.Of <IRazorDirectiveClassifierPass>(p => p.Order == 17);

        var engine = RazorProjectEngine.CreateEmpty(b =>
        {
            b.Phases.Add(phase);

            b.Features.Add(second);
            b.Features.Add(first);
        });

        // Assert
        Assert.Collection(
            phase.Passes,
            p => Assert.Same(first, p),
            p => Assert.Same(second, p));
    }