diff --git a/src/Reveal.Sdk.Dom.Tests/Visualizations/Extensions/IFinanceExtensionsFixture.cs b/src/Reveal.Sdk.Dom.Tests/Visualizations/Extensions/IFinanceExtensionsFixture.cs
new file mode 100644
index 0000000..309e6cb
--- /dev/null
+++ b/src/Reveal.Sdk.Dom.Tests/Visualizations/Extensions/IFinanceExtensionsFixture.cs
@@ -0,0 +1,241 @@
+using Reveal.Sdk.Dom.Visualizations;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace Reveal.Sdk.Dom.Tests.Visualizations.Extensions
+{
+    public class IFinanceExtensionsFixture
+    {
+        [Fact]
+        public void SetOpen_UpdateOpen_WithFieldName()
+        {
+            // Arrange
+            var visualization = new MockIFiananceVisualization() { Opens = new List<MeasureColumn>() { new MeasureColumn() { DataField = new NumberDataField("InitialField") } } };
+            var fieldName = "TestFieldName";
+            var field = new NumberDataField(fieldName);
+            field.Formatting = new NumberFormatting()
+            {
+                DecimalDigits = 0,
+                ShowGroupingSeparator = true
+            };
+            var expectedOpens = new List<MeasureColumn> { new MeasureColumn() { DataField = field } };
+
+            // Act
+            visualization.SetOpen(fieldName);
+
+            // Assert
+            Assert.Equivalent(expectedOpens, visualization.Opens, true);
+        }
+
+        [Theory]
+        [InlineData(true)]
+        [InlineData(false)]
+        public void SetOpen_UpdateOpen_WithNumberDataField(bool isFormattingNull)
+        {
+            // Arrange
+            var visualization = new MockIFiananceVisualization() { Opens = new List<MeasureColumn>() { new MeasureColumn() { DataField = new NumberDataField("InitialField") } } };
+
+            var fieldFormat = isFormattingNull ? null : new NumberFormatting()
+            {
+                DecimalDigits = 0,
+                ShowGroupingSeparator = true,
+                ApplyMkFormat = false,
+                CurrencySymbol = "AUD",
+                FormatType = NumberFormattingType.Currency,
+                NegativeFormat = NegativeFormatType.Parenthesis,
+                OverrideDefaultSettings = true,
+                SchemaTypeName = "TestSchema"
+            };
+            var field = new NumberDataField("TestField")
+            {
+                Formatting = fieldFormat
+            };
+
+            var expectedOpens = new List<MeasureColumn> { new MeasureColumn() { DataField = field } };
+
+            // Act
+            visualization.SetOpen(field);
+
+            // Assert
+            Assert.Equivalent(expectedOpens, visualization.Opens, true);
+        }
+
+        [Fact]
+        public void SetClose_UpdateClose_WithFieldName()
+        {
+            // Arrange
+            var visualization = new MockIFiananceVisualization() { Closes = new List<MeasureColumn>() { new MeasureColumn() { DataField = new NumberDataField("InitialField") } } };
+            var fieldName = "TestFieldName";
+            var field = new NumberDataField(fieldName);
+            field.Formatting = new NumberFormatting()
+            {
+                DecimalDigits = 0,
+                ShowGroupingSeparator = true
+            };
+            var expectedCloses = new List<MeasureColumn> { new MeasureColumn() { DataField = field } };
+
+            // Act
+            visualization.SetClose(fieldName);
+
+            // Assert
+            Assert.Equivalent(expectedCloses, visualization.Closes, true);
+        }
+
+        [Theory]
+        [InlineData(true)]
+        [InlineData(false)]
+        public void SetClose_UpdateClose_WithNumberDataField(bool isFormattingNull)
+        {
+            // Arrange
+            var visualization = new MockIFiananceVisualization() { Closes = new List<MeasureColumn>() { new MeasureColumn() { DataField = new NumberDataField("InitialField") } } };
+
+            var fieldFormat = isFormattingNull ? null : new NumberFormatting()
+            {
+                DecimalDigits = 0,
+                ShowGroupingSeparator = true,
+                ApplyMkFormat = false,
+                CurrencySymbol = "AUD",
+                FormatType = NumberFormattingType.Currency,
+                NegativeFormat = NegativeFormatType.Parenthesis,
+                OverrideDefaultSettings = true,
+                SchemaTypeName = "TestSchema"
+            };
+            var field = new NumberDataField("TestField")
+            {
+                Formatting = fieldFormat
+            };
+
+            var expectedCloses = new List<MeasureColumn> { new MeasureColumn() { DataField = field } };
+
+            // Act
+            visualization.SetClose(field);
+
+            // Assert
+            Assert.Equivalent(expectedCloses, visualization.Closes, true);
+        }
+
+        [Fact]
+        public void SetHigh_UpdateHigh_WithFieldName()
+        {
+            // Arrange
+            var visualization = new MockIFiananceVisualization() { Highs = new List<MeasureColumn>() { new MeasureColumn() { DataField = new NumberDataField("InitialField") } } };
+            var fieldName = "TestFieldName";
+            var field = new NumberDataField(fieldName);
+            field.Formatting = new NumberFormatting()
+            {
+                DecimalDigits = 0,
+                ShowGroupingSeparator = true
+            };
+            var expectedHighs = new List<MeasureColumn> { new MeasureColumn() { DataField = field } };
+
+            // Act
+            visualization.SetHigh(fieldName);
+
+            // Assert
+            Assert.Equivalent(expectedHighs, visualization.Highs, true);
+        }
+
+        [Theory]
+        [InlineData(true)]
+        [InlineData(false)]
+        public void SetHigh_UpdateHigh_WithNumberDataField(bool isFormattingNull)
+        {
+            // Arrange
+            var visualization = new MockIFiananceVisualization() { Highs = new List<MeasureColumn>() { new MeasureColumn() { DataField = new NumberDataField("InitialField") } } };
+
+            var fieldFormat = isFormattingNull ? null : new NumberFormatting()
+            {
+                DecimalDigits = 0,
+                ShowGroupingSeparator = true,
+                ApplyMkFormat = false,
+                CurrencySymbol = "AUD",
+                FormatType = NumberFormattingType.Currency,
+                NegativeFormat = NegativeFormatType.Parenthesis,
+                OverrideDefaultSettings = true,
+                SchemaTypeName = "TestSchema"
+            };
+            var field = new NumberDataField("TestField")
+            {
+                Formatting = fieldFormat
+            };
+
+            var expectedHighs = new List<MeasureColumn> { new MeasureColumn() { DataField = field } };
+
+            // Act
+            visualization.SetHigh(field);
+
+            // Assert
+            Assert.Equivalent(expectedHighs, visualization.Highs, true);
+        }
+
+        [Fact]
+        public void SetLow_UpdateLow_WithFieldName()
+        {
+            // Arrange
+            var visualization = new MockIFiananceVisualization() { Lows = new List<MeasureColumn>() { new MeasureColumn() { DataField = new NumberDataField("InitialField") } } };
+            var fieldName = "TestFieldName";
+            var field = new NumberDataField(fieldName);
+            field.Formatting = new NumberFormatting()
+            {
+                DecimalDigits = 0,
+                ShowGroupingSeparator = true
+            };
+            var expectedLows = new List<MeasureColumn> { new MeasureColumn() { DataField = field } };
+
+            // Act
+            visualization.SetLow(field);
+
+            // Assert
+            Assert.Equivalent(expectedLows, visualization.Lows, true);
+        }
+
+        [Theory]
+        [InlineData(true)]
+        [InlineData(false)]
+        public void SetLow_UpdateLow_WithNumberDataField(bool isFormattingNull)
+        {
+            // Arrange
+            var visualization = new MockIFiananceVisualization() { Lows = new List<MeasureColumn>() { new MeasureColumn() { DataField = new NumberDataField("InitialField") } } };
+
+            var fieldFormat = isFormattingNull ? null : new NumberFormatting()
+            {
+                DecimalDigits = 0,
+                ShowGroupingSeparator = true,
+                ApplyMkFormat = false,
+                CurrencySymbol = "AUD",
+                FormatType = NumberFormattingType.Currency,
+                NegativeFormat = NegativeFormatType.Parenthesis,
+                OverrideDefaultSettings = true,
+                SchemaTypeName = "TestSchema"
+            };
+            var field = new NumberDataField("TestField")
+            {
+                Formatting = fieldFormat
+            };
+
+            var expectedLows = new List<MeasureColumn> { new MeasureColumn() { DataField = field } };
+
+            // Act
+            visualization.SetLow(field);
+
+            // Assert
+            Assert.Equivalent(expectedLows, visualization.Lows, true);
+        }
+
+
+        private class MockIFiananceVisualization : IFinance
+        {
+            public List<MeasureColumn> Opens { get; set; } = new List<MeasureColumn>();
+
+            public List<MeasureColumn> Highs { get; set; } = new List<MeasureColumn>();
+
+            public List<MeasureColumn> Lows { get; set; } = new List<MeasureColumn>();
+
+            public List<MeasureColumn> Closes { get; set; } = new List<MeasureColumn>();
+        }
+    }
+}