public async Task BuildTreeAsync_EmptySnapshot_CreatesRootNode()
        {
            // Arrange
            var dependenciesRoot = new TestProjectTree {
                Caption = "MyDependencies"
            };

            var snapshot = DependenciesSnapshot.Empty;

            // Act
            var resultTree = await CreateProvider().BuildTreeAsync(dependenciesRoot, snapshot);

            // Assert
            var expectedFlatHierarchy = "Caption=MyDependencies, IconHash=325248080, ExpandedIconHash=325248080, Rule=, IsProjectItem=False, CustomTag=";

            AssertTestData(expectedFlatHierarchy, resultTree);
            Assert.Equal(s_rootImage.ToProjectSystemType(), resultTree.Icon);
            Assert.Equal(s_rootImage.ToProjectSystemType(), resultTree.ExpandedIcon);
        }
        public async Task WhenOneTargetSnapshotWithExistingDependencies_ShouldApplyChanges()
        {
            var dependencyModelRootXxx = new TestDependencyModel
            {
                ProviderType     = "Xxx",
                Id               = "XxxDependencyRoot",
                OriginalItemSpec = "XxxDependencyRoot",
                Caption          = "XxxDependencyRoot",
                Resolved         = true
            };

            var dependencyModelRootYyy = new TestDependencyModel
            {
                ProviderType     = "Yyy",
                Id               = "YyyDependencyRoot",
                OriginalItemSpec = "YyyDependencyRoot",
                Caption          = "YyyDependencyRoot"
            };

            var dependencyXxx1 = new TestDependency
            {
                ProviderType     = "Xxx",
                Id               = "dependency1",
                OriginalItemSpec = "dependency1",
                FilePath         = "dependencyXxxpath",
                Caption          = "Dependency1",
                SchemaItemType   = "Xxx",
                Resolved         = true
            };

            var dependencyYyy1 = new TestDependency
            {
                ProviderType     = "Yyy",
                Id               = "dependency1",
                OriginalItemSpec = "dependency1",
                FilePath         = "dependencyYyypath",
                Caption          = "Dependency1",
                SchemaItemType   = "Yyy",
                Resolved         = true
            };

            var dependencyYyyExisting = new TestDependency
            {
                ProviderType     = "Yyy",
                Id               = "dependencyExisting",
                OriginalItemSpec = "dependencyExisting",
                FilePath         = "dependencyExistingPath",
                Caption          = "DependencyExisting",
                SchemaItemType   = "Yyy",
                Resolved         = true
            };

            var dependenciesRoot = new TestProjectTree
            {
                Caption  = "MyDependencies",
                Children =
                {
                    new TestProjectTree
                    {
                        Caption = "OldRootChildToBeRemoved"
                    },
                    new TestProjectTree
                    {
                        Caption  = "YyyDependencyRoot",
                        Children =
                        {
                            new TestProjectTree
                            {
                                Caption = "DependencyExisting"
                            }
                        }
                    }
                }
            };

            var provider = CreateProvider(rootModels: new[] { dependencyModelRootXxx, dependencyModelRootYyy });

            var snapshot = GetSnapshot((_tfm1, new[] { dependencyXxx1, dependencyYyy1, dependencyYyyExisting }));

            // Act
            var resultTree = await provider.BuildTreeAsync(dependenciesRoot, snapshot);

            // Assert
            const string expectedFlatHierarchy =
                @"Caption=MyDependencies, IconHash=325248080, ExpandedIconHash=325248080, Rule=, IsProjectItem=False, CustomTag=
    Caption=YyyDependencyRoot, IconHash=0, ExpandedIconHash=0, Rule=, IsProjectItem=False, CustomTag=
        Caption=DependencyExisting, IconHash=325248088, ExpandedIconHash=325248260, Rule=, IsProjectItem=False, CustomTag=
        Caption=Dependency1, IconHash=325248088, ExpandedIconHash=325248260, Rule=, IsProjectItem=True, CustomTag=
    Caption=XxxDependencyRoot, IconHash=0, ExpandedIconHash=0, Rule=, IsProjectItem=False, CustomTag=
        Caption=Dependency1, IconHash=325248088, ExpandedIconHash=325248260, Rule=, IsProjectItem=True, CustomTag=";

            AssertTestData(expectedFlatHierarchy, resultTree);
        }
        public async Task WhenMultipleTargetSnapshotsWithExistingDependencies_ShouldApplyChanges()
        {
            var dependencyModelRootXxx = new TestDependencyModel
            {
                ProviderType     = "Xxx",
                Id               = "XxxDependencyRoot",
                OriginalItemSpec = "XxxDependencyRoot",
                Caption          = "XxxDependencyRoot",
                Resolved         = true
            };

            var dependencyXxx1 = new TestDependency
            {
                ProviderType     = "Xxx",
                Id               = "dependency1",
                FilePath         = "dependencyxxxpath",
                OriginalItemSpec = "dependency1",
                Caption          = "Dependency1",
                SchemaItemType   = "Xxx",
                Resolved         = true
            };

            var dependencyModelRootYyy = new TestDependencyModel
            {
                ProviderType     = "Yyy",
                Id               = "YyyDependencyRoot",
                OriginalItemSpec = "YyyDependencyRoot",
                Caption          = "YyyDependencyRoot"
            };

            var dependencyYyy1 = new TestDependency
            {
                ProviderType     = "Yyy",
                Id               = "dependency1",
                FilePath         = "dependencyyyypath",
                OriginalItemSpec = "dependency1",
                Caption          = "Dependency1",
                SchemaItemType   = "Yyy",
                Resolved         = true
            };

            var dependencyYyyExisting = new TestDependency
            {
                ProviderType     = "Yyy",
                Id               = "dependencyExisting",
                FilePath         = "dependencyyyyExistingpath",
                OriginalItemSpec = "dependencyExisting",
                Caption          = "DependencyExisting",
                SchemaItemType   = "Yyy",
                Resolved         = true
            };

            var dependencyModelRootZzz = new TestDependencyModel
            {
                ProviderType     = "Zzz",
                Id               = "ZzzDependencyRoot",
                OriginalItemSpec = "ZzzDependencyRoot",
                Caption          = "ZzzDependencyRoot",
                Resolved         = true,
                Flags            = ProjectTreeFlags.Create(ProjectTreeFlags.Common.BubbleUp)
            };

            var dependencyAny1 = new TestDependency
            {
                ProviderType     = "Zzz",
                Id               = "ZzzDependencyAny1",
                FilePath         = "ZzzDependencyAny1path",
                OriginalItemSpec = "ZzzDependencyAny1",
                Caption          = "ZzzDependencyAny1"
            };

            var dependenciesRoot = new TestProjectTree
            {
                Caption  = "MyDependencies",
                Children =
                {
                    new TestProjectTree
                    {
                        Caption = "OldRootChildToBeRemoved"
                    },
                    new TestProjectTree
                    {
                        Caption  = "YyyDependencyRoot",
                        Children =
                        {
                            new TestProjectTree
                            {
                                Caption = "DependencyExisting",
                            }
                        }
                    }
                }
            };

            var targetModel1 = new TestDependencyModel
            {
                Id = "tfm1",
                OriginalItemSpec = "tfm1",
                Caption          = "tfm1"
            };

            var targetModel2 = new TestDependencyModel
            {
                Id = "tfm2",
                OriginalItemSpec = "tfm2",
                Caption          = "tfm2"
            };

            var provider = CreateProvider(
                rootModels: new[] { dependencyModelRootXxx, dependencyModelRootYyy, dependencyModelRootZzz },
                targetModels: new[] { targetModel1, targetModel2 });

            var snapshot = GetSnapshot(
                (_tfm1, new[] { dependencyXxx1, dependencyYyy1, dependencyYyyExisting }),
                (_tfm2, new[] { dependencyXxx1, dependencyYyy1, dependencyYyyExisting }),
                (TargetFramework.Any, new[] { dependencyAny1 }));

            // Act
            var resultTree = await provider.BuildTreeAsync(dependenciesRoot, snapshot);

            // Assert
            const string expectedFlatHierarchy =
                @"Caption=MyDependencies, IconHash=325248080, ExpandedIconHash=325248080, Rule=, IsProjectItem=False, CustomTag=
    Caption=ZzzDependencyRoot, IconHash=0, ExpandedIconHash=0, Rule=, IsProjectItem=False, CustomTag=
        Caption=ZzzDependencyAny1, IconHash=325248665, ExpandedIconHash=325248817, Rule=, IsProjectItem=False, CustomTag=
    Caption=tfm2, IconHash=0, ExpandedIconHash=0, Rule=, IsProjectItem=False, CustomTag=, BubbleUpFlag=True
        Caption=XxxDependencyRoot, IconHash=0, ExpandedIconHash=0, Rule=, IsProjectItem=False, CustomTag=
            Caption=Dependency1, IconHash=325248088, ExpandedIconHash=325248260, Rule=, IsProjectItem=False, CustomTag=
        Caption=YyyDependencyRoot, IconHash=0, ExpandedIconHash=0, Rule=, IsProjectItem=False, CustomTag=
            Caption=Dependency1, IconHash=325248088, ExpandedIconHash=325248260, Rule=, IsProjectItem=False, CustomTag=
            Caption=DependencyExisting, IconHash=325248088, ExpandedIconHash=325248260, Rule=, IsProjectItem=False, CustomTag=
    Caption=tfm1, IconHash=0, ExpandedIconHash=0, Rule=, IsProjectItem=False, CustomTag=, BubbleUpFlag=True
        Caption=XxxDependencyRoot, IconHash=0, ExpandedIconHash=0, Rule=, IsProjectItem=False, CustomTag=
            Caption=Dependency1, IconHash=325248088, ExpandedIconHash=325248260, Rule=, IsProjectItem=True, CustomTag=
        Caption=YyyDependencyRoot, IconHash=0, ExpandedIconHash=0, Rule=, IsProjectItem=False, CustomTag=
            Caption=Dependency1, IconHash=325248088, ExpandedIconHash=325248260, Rule=, IsProjectItem=True, CustomTag=
            Caption=DependencyExisting, IconHash=325248088, ExpandedIconHash=325248260, Rule=, IsProjectItem=True, CustomTag=";

            AssertTestData(expectedFlatHierarchy, resultTree);
        }
        public void WhenFindByPathAndNeedToFindDependenciesRoot_ShouldNotFind()
        {
            // Arrange
            var provider = CreateProvider();

            var projectRoot = new TestProjectTree
            {
                Caption  = "myproject",
                Children =
                {
                    new TestProjectTree
                    {
                        Caption  = "MyDependencies",
                        Flags    = DependencyTreeFlags.DependenciesRootNode,
                        Children =
                        {
                            new TestProjectTree
                            {
                                Caption  = "level1Child1",
                                FilePath = @"c:\folder\level1Child1"
                            },
                            new TestProjectTree
                            {
                                Caption  = "level1Child2",
                                FilePath = @"c:\folder\level1Child2",
                                Children =
                                {
                                    new TestProjectTree
                                    {
                                        Caption  = "level2Child21",
                                        FilePath = @"c:\folder\level2Child21"
                                    },
                                    new TestProjectTree
                                    {
                                        Caption  = "level1Child22",
                                        FilePath = @"c:\folder\level2Child22",
                                        Children =
                                        {
                                            new TestProjectTree
                                            {
                                                Caption  = "level3Child31",
                                                FilePath = @"c:\folder\level3Child31"
                                            },
                                            new TestProjectTree
                                            {
                                                Caption  = "level3Child32",
                                                FilePath = @"level3Child32"
                                            }
                                        }
                                    }
                                }
                            }
                        }
                    }
                }
            };

            // Act
            var result = provider.FindByPath(projectRoot, "SomePath\\level3Child32");

            // Assert
            Assert.Null(result);
        }
        public async Task WhenOneTargetSnapshotAndDependencyIsResolved_ShouldRead()
        {
            var dependencyModelRootYyy = new TestDependencyModel
            {
                ProviderType = "Yyy",
                Id           = "YyyDependencyRoot",
                Name         = "YyyDependencyRoot",
                Caption      = "YyyDependencyRoot",
                Resolved     = true
            };

            var dependencyYyyExisting = new TestDependency
            {
                ProviderType    = "Yyy",
                Id              = "tfm1\\yyy\\dependencyExisting",
                Name            = "dependencyExisting",
                Path            = "dependencyExistingpath",
                Caption         = "DependencyExisting",
                SchemaItemType  = "Yyy",
                Resolved        = true,
                TargetFramework = _tfm1
            };

            var dependenciesRoot = new TestProjectTree
            {
                Caption  = "MyDependencies",
                Children =
                {
                    new TestProjectTree
                    {
                        Caption  = "YyyDependencyRoot",
                        FilePath = "YyyDependencyRoot",
                        Children =
                        {
                            new TestProjectTree
                            {
                                Caption   = "DependencyExisting",
                                FilePath  = "tfm1\\yyy\\dependencyExisting",
                                CustomTag = "Untouched",
                                Flags     = DependencyTreeFlags.Unresolved
                            }
                        }
                    }
                }
            };

            var provider = CreateProvider(rootModels: new[] { dependencyModelRootYyy });

            var snapshot = GetSnapshot((_tfm1, new[] { dependencyYyyExisting }));

            // Act
            var resultTree = await provider.BuildTreeAsync(dependenciesRoot, snapshot);

            // Assert
            var expectedFlatHierarchy =
                @"Caption=MyDependencies, FilePath=, IconHash=325248080, ExpandedIconHash=325248080, Rule=, IsProjectItem=False, CustomTag=
    Caption=YyyDependencyRoot, FilePath=YyyDependencyRoot, IconHash=0, ExpandedIconHash=0, Rule=, IsProjectItem=False, CustomTag=
        Caption=DependencyExisting, FilePath=tfm1\yyy\dependencyExisting, IconHash=325248088, ExpandedIconHash=325248260, Rule=, IsProjectItem=False, CustomTag=Untouched";

            Assert.Equal(expectedFlatHierarchy, ToTestDataString((TestProjectTree)resultTree));
        }