Write Unit tests for Single Value Visualizations (PieChartVisualization)

src/Reveal.Sdk.Dom.Tests/Visualizations/PieChartVisualizationFixture.cs

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+using System.Collections.Generic;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Linq;
+using Reveal.Sdk.Dom.Core.Serialization;
+using Reveal.Sdk.Dom.Data;
+using Reveal.Sdk.Dom.Filters;
+using Reveal.Sdk.Dom.Visualizations;
+using Reveal.Sdk.Dom.Visualizations.Settings;
+using Reveal.Sdk.Dom.Visualizations.VisualizationSpecs;
+using Xunit;
+
+namespace Reveal.Sdk.Dom.Tests.Visualizations;
+
+public class PieChartVisualizationFixture
+{
+    [Fact]
+    public void Constructor_InitializesDefaultValues_WhenInstanceIsCreated()
+    {
+        //Act
+        var visualization = new PieChartVisualization();
+
+        //Assert
+        Assert.Equal(ChartType.Pie, visualization.ChartType);
+        Assert.Equal(0, visualization.ColumnSpan);
+        Assert.Null(visualization.DataDefinition);
+        Assert.Null(visualization.Description);
+        Assert.NotNull(visualization.Id);
+        Assert.True(visualization.IsTitleVisible);
+        Assert.NotNull(visualization.Labels);
+        Assert.Empty(visualization.Labels);
+        Assert.Null(visualization.Linker);
+        Assert.Equal(0, visualization.RowSpan);
+        Assert.NotNull(visualization.Settings);
+        Assert.IsType<PieChartVisualizationSettings>(visualization.Settings);
+        Assert.Null(visualization.Title);
+        Assert.NotNull(visualization.Values);
+        Assert.Empty(visualization.Values);
+        Assert.NotNull(visualization.VisualizationDataSpec);
+        Assert.IsType<SingleValueLabelsVisualizationDataSpec>(visualization.VisualizationDataSpec);
+    }
+
+    [Theory]
+    [InlineData(true)]
+    [InlineData(false)]
+    public void Constructor_InitializesPieChartVisualizationWithDataSourceItem_WhenDataSourceItemIsProvided(
+        bool hasTabularData)
+    {
+        // Arrange
+        var dataSourceItem = new DataSourceItem { HasTabularData = hasTabularData };
+
+        // Act
+        var pieChartVisualization = new PieChartVisualization(dataSourceItem);
+
+        // Assert
+        Assert.Equal(ChartType.Pie, pieChartVisualization.ChartType);
+        Assert.Equal(dataSourceItem, pieChartVisualization.DataDefinition.DataSourceItem);
+        Assert.Null(pieChartVisualization.Title);
+        Assert.Equal(hasTabularData, pieChartVisualization.DataDefinition.DataSourceItem.HasTabularData);
+        Assert.IsType(
+            hasTabularData
+                ? typeof(TabularDataDefinition)
+                : typeof(XmlaDataDefinition),
+            pieChartVisualization.DataDefinition);
+    }
+
+    [Theory]
+    [InlineData("Test Title", null, null)]
+    [InlineData(null, null, null)]
+    [InlineData("Test Title with Data Source", true, true)]
+    [InlineData("Test Title without Tabular Data", false, false)]
+    public void Constructor_SetsTitleAndDataSourceItem_WhenArgumentsAreProvided(string title, bool? hasTabularData,
+        bool? expectedHasTabularData)
+    {
+        // Arrange
+        var dataSourceItem = hasTabularData.HasValue
+            ? new DataSourceItem { HasTabularData = hasTabularData.Value }
+            : null;
+        // Act
+        var pieChartVisualization = new PieChartVisualization(title, dataSourceItem);
+
+        // Assert
+        Assert.Equal(title, pieChartVisualization.Title);
+        Assert.Equal(ChartType.Pie, pieChartVisualization.ChartType);
+
+        if (dataSourceItem == null)
+        {
+            Assert.Null(pieChartVisualization.DataDefinition);
+        }
+        else
+        {
+            Assert.NotNull(pieChartVisualization.DataDefinition);
+            Assert.Equal(expectedHasTabularData, pieChartVisualization.DataDefinition.DataSourceItem.HasTabularData);
+            Assert.IsType(
+                hasTabularData.Value
+                    ? typeof(TabularDataDefinition)
+                    : typeof(XmlaDataDefinition),
+                pieChartVisualization.DataDefinition);
+        }
+    }
+
+    [Fact]
+    public void ToJsonString_GeneratesCorrectJson_WhenPieChartVisualizationIsSerialized()
+    {
+        //Arrange
+        var expectedJson =
+            """
+            [ {
+              "Description" : "Pie Chart Visualization",
+              "Id" : "60344a4a-d0ce-4364-9f8c-acfbb8caa32e",
+              "Title" : "Pie Chart Visualization",
+              "IsTitleVisible" : true,
+              "ColumnSpan" : 0,
+              "RowSpan" : 0,
+              "VisualizationSettings" : {
+                "_type" : "ChartVisualizationSettingsType",
+                "ShowZeroValuesInLegend" : false,
+                "ShowLegends" : true,
+                "LabelDisplayMode" : "Value",
+                "OthersSliceThreshold" : 3.0,
+                "ChartType" : "Pie",
+                "VisualizationType" : "CHART"
+              },
+              "DataSpec" : {
+                "_type" : "TabularDataSpecType",
+                "IsTransposed" : false,
+                "Fields" : [ {
+                  "FieldName" : "Date",
+                  "FieldLabel" : "Date",
+                  "UserCaption" : "Date",
+                  "IsCalculated" : false,
+                  "Properties" : { },
+                  "Sorting" : "None",
+                  "FieldType" : "Date"
+                }, {
+                  "FieldName" : "Conversions",
+                  "FieldLabel" : "Conversions",
+                  "UserCaption" : "Conversions",
+                  "IsCalculated" : false,
+                  "Properties" : { },
+                  "Sorting" : "None",
+                  "FieldType" : "String"
+                }, {
+                  "FieldName" : "Territory",
+                  "FieldLabel" : "Territory",
+                  "UserCaption" : "Territory",
+                  "IsCalculated" : false,
+                  "Properties" : { },
+                  "Sorting" : "None",
+                  "FieldType" : "String"
+                } ],
+                "TransposedFields" : [ ],
+                "QuickFilters" : [ ],
+                "AdditionalTables" : [ ],
+                "ServiceAdditionalTables" : [ ],
+                "DataSourceItem" : {
+                  "_type" : "DataSourceItemType",
+                  "Id" : "080cc17d-4a0a-4837-aa3f-ef2571ea443a",
+                  "Title" : "Marketing Sheet",
+                  "Subtitle" : "Excel Data Source Item",
+                  "DataSourceId" : "__EXCEL",
+                  "HasTabularData" : true,
+                  "HasAsset" : false,
+                  "Properties" : {
+                    "Sheet" : "Marketing"
+                  },
+                  "Parameters" : { },
+                  "ResourceItem" : {
+                    "_type" : "DataSourceItemType",
+                    "Id" : "d593dd79-7161-4929-afc9-c26393f5b650",
+                    "Title" : "Marketing Sheet",
+                    "Subtitle" : "Excel Data Source Item",
+                    "DataSourceId" : "33077d1e-19c5-44fe-b981-6765af3156a6",
+                    "HasTabularData" : true,
+                    "HasAsset" : false,
+                    "Properties" : {
+                      "Url" : "http://dl.infragistics.com/reportplus/reveal/samples/Samples.xlsx"
+                    },
+                    "Parameters" : { }
+                  }
+                },
+                "Expiration" : 1440,
+                "Bindings" : {
+                  "Bindings" : [ ]
+                }
+              },
+              "VisualizationDataSpec" : {
+                "_type" : "SingleValueLabelsVisualizationDataSpecType",
+                "Value" : [ {
+                  "_type" : "MeasureColumnSpecType",
+                  "SummarizationField" : {
+                    "_type" : "SummarizationValueFieldType",
+                    "FieldLabel" : "Conversions",
+                    "UserCaption" : "Conversions",
+                    "IsHidden" : false,
+                    "AggregationType" : "Sum",
+                    "Sorting" : "None",
+                    "IsCalculated" : false,
+                    "FieldName" : "Conversions"
+                  }
+                } ],
+                "FormatVersion" : 0,
+                "AdHocExpandedElements" : [ ],
+                "Rows" : [ {
+                  "_type" : "DimensionColumnSpecType",
+                  "SummarizationField" : {
+                    "_type" : "SummarizationRegularFieldType",
+                    "DrillDownElements" : [ ],
+                    "ExpandedItems" : [ ],
+                    "FieldName" : "Territory"
+                  }
+                } ]
+              }
+            } ]
+            """;
+
+        var document = new RdashDocument("My Dashboard");
+
+        var excelDataSourceItem = new RestDataSourceItem("Marketing Sheet")
+        {
+            Id = "080cc17d-4a0a-4837-aa3f-ef2571ea443a",
+            Subtitle = "Excel Data Source Item",
+            Url = "http://dl.infragistics.com/reportplus/reveal/samples/Samples.xlsx",
+            IsAnonymous = true,
+            ResourceItem = new DataSourceItem
+            {
+                Id = "d593dd79-7161-4929-afc9-c26393f5b650",
+                DataSourceId = "33077d1e-19c5-44fe-b981-6765af3156a6",
+                Title = "Marketing Sheet",
+                Subtitle = "Excel Data Source Item",
+                HasTabularData = true,
+                HasAsset = false,
+                Properties = new Dictionary<string, object>
+                {
+                    { "Url", "http://dl.infragistics.com/reportplus/reveal/samples/Samples.xlsx" }
+                }
+            },
+            Fields = new List<IField>
+            {
+                new DateField("Date"),
+                new TextField("Conversions"),
+                new TextField("Territory"),
+            }
+        };
+        excelDataSourceItem.UseExcel("Marketing");
+
+        document.Visualizations.Add(new PieChartVisualization("Pie Chart Visualization", excelDataSourceItem)
+            {
+                Id = "60344a4a-d0ce-4364-9f8c-acfbb8caa32e",
+                IsTitleVisible = true,
+                Description = "Pie Chart Visualization"
+            }
+            .SetLabel("Territory").SetValue("Conversions")
+            .ConfigureSettings(settings =>
+            {
+                settings.SliceLabelDisplay = LabelDisplayMode.Value;
+            }));
+
+        document.Filters.Add(new DashboardDateFilter("My Date Filter"));
+
+        //Act
+        var json = document.ToJsonString();
+        var actualJson = JObject.Parse(json)["Widgets"];
+        var actualNormalized = JsonConvert.SerializeObject(actualJson, Formatting.Indented);
+        var expectedNormalized = JArray.Parse(expectedJson).ToString(Formatting.Indented);
+
+        // Assert
+        Assert.Equal(expectedNormalized.Trim(), actualNormalized.Trim());
+    }
+}