Index: Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.Test/StabilityPointStructureTest.cs
===================================================================
diff -u -rff948d4633181ead2677ab35467a93b4118c6751 -r28abc553b8d4a144cc7f2b238b204104da928d59
--- Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.Test/StabilityPointStructureTest.cs	(.../StabilityPointStructureTest.cs)	(revision ff948d4633181ead2677ab35467a93b4118c6751)
+++ Ringtoets/StabilityPointStructures/test/Ringtoets.StabilityPointStructures.Data.Test/StabilityPointStructureTest.cs	(.../StabilityPointStructureTest.cs)	(revision 28abc553b8d4a144cc7f2b238b204104da928d59)
@@ -25,6 +25,7 @@
 using Ringtoets.Common.Data;
 using Ringtoets.Common.Data.Probabilistics;
 using Ringtoets.Common.Data.TestUtil;
+using Ringtoets.StabilityPointStructures.Data.TestUtil;
 
 namespace Ringtoets.StabilityPointStructures.Data.Test
 {
@@ -430,5 +431,84 @@
 
             Assert.AreEqual(StabilityPointStructureInflowModelType.LowSill, structure.InflowModelType);
         }
+
+        [Test]
+        [TestCase(null)]
+        [TestCase("string")]
+        public void Equals_ToDifferentTypeOrNull_ReturnsFalse(object other)
+        {
+            // Setup
+            StabilityPointStructure structure = new TestStabilityPointStructure();
+
+            // Call
+            bool isEqual = structure.Equals(other);
+
+            // Assert
+            Assert.IsFalse(isEqual);
+        }
+
+        [Test]
+        public void Equals_ToItself_ReturnsTrue()
+        {
+            // Setup
+            StabilityPointStructure structure = new TestStabilityPointStructure();
+
+            // Call
+            bool isEqual = structure.Equals(structure);
+
+            // Assert
+            Assert.IsTrue(isEqual);
+        }
+
+        [Test]
+        public void Equals_TransitivePropertyAllPropertiesEqual_ReturnsTrue()
+        {
+            // Setup
+            StabilityPointStructure structureX = new TestStabilityPointStructure();
+            StabilityPointStructure structureY = new TestStabilityPointStructure();
+            StabilityPointStructure structureZ = new TestStabilityPointStructure();
+
+            // Call
+            bool isXEqualToY = structureX.Equals(structureY);
+            bool isYEqualToZ = structureY.Equals(structureZ);
+            bool isXEqualToZ = structureX.Equals(structureZ);
+
+            // Assert
+            Assert.IsTrue(isXEqualToY);
+            Assert.IsTrue(isYEqualToZ);
+            Assert.IsTrue(isXEqualToZ);
+        }
+
+        [Test]
+        [TestCaseSource(typeof(StabilityPointStructurePermutationHelper),
+            nameof(StabilityPointStructurePermutationHelper.DifferentStabilityPointStructures),
+            new object[]
+            {
+                "Equals",
+                "ReturnsFalse"
+            })]
+        public void Equals_DifferentProperty_ReturnsFalse(StabilityPointStructure structure)
+        {
+            // Call
+            bool isEqual = structure.Equals(new TestStabilityPointStructure());
+
+            // Assert
+            Assert.IsFalse(isEqual);
+        }
+
+        [Test]
+        public void GetHashCode_EqualStructures_ReturnsSameHashCode()
+        {
+            // Setup
+            StabilityPointStructure structureOne = new TestStabilityPointStructure();
+            StabilityPointStructure structureTwo = new TestStabilityPointStructure();
+
+            // Call
+            int hashCodeOne = structureOne.GetHashCode();
+            int hashCodeTwo = structureTwo.GetHashCode();
+
+            // Assert
+            Assert.AreEqual(hashCodeOne, hashCodeTwo);
+        }
     }
 }
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