diff --git a/src/Test/Logic/DimensionTest.cs b/src/Test/Logic/DimensionTest.cs
new file mode 100644
index 000000000..c43ad570c
--- /dev/null
+++ b/src/Test/Logic/DimensionTest.cs
@@ -0,0 +1,34 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Nikse.SubtitleEdit.Core.Common;
+
+namespace Test.Logic
+{
+    [TestClass]
+    public class DimensionTest
+    {
+        [TestMethod]
+        public void InvalidTest()
+        {
+            var dimension = new Dimension();
+            Assert.AreEqual(0, dimension.Width);
+            Assert.AreEqual(0, dimension.Height);
+            Assert.IsTrue(!dimension.IsValid());
+        }
+        
+        [TestMethod]
+        public void ValidTest()
+        {
+            var dimension = new Dimension(10, 10);
+            Assert.IsTrue(dimension.IsValid());
+        }
+        
+        [TestMethod]
+        public void EqualityTest()
+        {
+            var dimensionOne = new Dimension();
+            var dimensionTwo = new Dimension();
+            Assert.AreEqual(dimensionOne, dimensionTwo);
+            Assert.IsTrue(dimensionOne == dimensionTwo);
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/Test/Test.csproj b/src/Test/Test.csproj
index 0bbe85949..c0c2f74a0 100644
--- a/src/Test/Test.csproj
+++ b/src/Test/Test.csproj
@@ -76,6 +76,7 @@
     <Compile Include="Logic\BeautifyTimeCodesTest.cs" />
     <Compile Include="Logic\ConvertColorsToDialogTest.cs" />
     <Compile Include="Core\LanguageAutoDetectLanguagesTest.cs" />
+    <Compile Include="Logic\DimensionTest.cs" />
     <Compile Include="Logic\NetflixHelperTest.cs" />
     <Compile Include="Logic\SubtitleFormats\EbuStlTest.cs" />
     <Compile Include="Logic\SubtitleFormats\NetflixTimedTextTest.cs" />