diff --git a/tests/Umbraco.Tests.UnitTests/Umbraco.Core/PropertyEditors/Validators/RequiredValidatorTests.cs b/tests/Umbraco.Tests.UnitTests/Umbraco.Core/PropertyEditors/Validators/RequiredValidatorTests.cs
new file mode 100644
index 0000000000..d2071472ab
--- /dev/null
+++ b/tests/Umbraco.Tests.UnitTests/Umbraco.Core/PropertyEditors/Validators/RequiredValidatorTests.cs
@@ -0,0 +1,66 @@
+// Copyright (c) Umbraco.
+// See LICENSE for more details.
+
+using System.ComponentModel.DataAnnotations;
+using NUnit.Framework;
+using Umbraco.Cms.Core;
+using Umbraco.Cms.Core.PropertyEditors;
+using Umbraco.Cms.Core.PropertyEditors.Validators;
+
+namespace Umbraco.Cms.Tests.UnitTests.Umbraco.Core.PropertyEditors.Validators;
+
+[TestFixture]
+public class RequiredValidatorTests
+{
+    [Test]
+    public void Validates_Null()
+    {
+        var validator = new RequiredValidator();
+        var result = validator.ValidateRequired(null, ValueTypes.String);
+        AssertValidationFailed(result, expectedMessage: Constants.Validation.ErrorMessages.Properties.Missing);
+    }
+
+    [TestCase("", false)]
+    [TestCase(" ", false)]
+    [TestCase("a", true)]
+    public void Validates_Strings(string value, bool expectedSuccess)
+    {
+        var validator = new RequiredValidator();
+        var result = validator.ValidateRequired(value, ValueTypes.String);
+        if (expectedSuccess)
+        {
+            Assert.IsEmpty(result);
+        }
+        else
+        {
+            AssertValidationFailed(result);
+        }
+    }
+
+    [TestCase("{}", false)]
+    [TestCase("[]", false)]
+    [TestCase("{ }", false)]
+    [TestCase("[ ]", false)]
+    [TestCase(" { } ", false)]
+    [TestCase(" [ ] ", false)]
+    [TestCase(" { \"foo\": \"bar\" } ", true)]
+    public void Validates_Json(string value, bool expectedSuccess)
+    {
+        var validator = new RequiredValidator();
+        var result = validator.ValidateRequired(value, ValueTypes.Json);
+        if (expectedSuccess)
+        {
+            Assert.IsEmpty(result);
+        }
+        else
+        {
+            AssertValidationFailed(result);
+        }
+    }
+
+    private static void AssertValidationFailed(IEnumerable<ValidationResult> result, string expectedMessage = Constants.Validation.ErrorMessages.Properties.Empty)
+    {
+        Assert.AreEqual(1, result.Count());
+        Assert.AreEqual(expectedMessage, result.First().ErrorMessage);
+    }
+}