diff --git a/core/src/test/scala/doric/sem/ErrorsSpec.scala b/core/src/test/scala/doric/sem/ErrorsSpec.scala
index 46860bebe..942eb43cb 100644
--- a/core/src/test/scala/doric/sem/ErrorsSpec.scala
+++ b/core/src/test/scala/doric/sem/ErrorsSpec.scala
@@ -3,6 +3,7 @@ package sem
 
 import doric.SparkSessionTestWrapper
 import org.apache.spark.sql.AnalysisException
+import org.apache.spark.sql.types.StringType
 import org.scalatest.funspec.AnyFunSpecLike
 import org.scalatest.matchers.should.Matchers
 
@@ -54,6 +55,26 @@ class ErrorsSpec
 
       err.hashCode() shouldNot be(err2.hashCode())
     }
+
+    it("should be equals if class and error message ar the same") {
+      val err = SparkErrorWrapper(
+        new Exception("this")
+      )
+      val err2 = SparkErrorWrapper(
+        new Exception("this")
+      )
+
+      err.equals(err2) shouldBe true
+    }
+
+    it("should NOT be equals if the second has no Throwable") {
+      val err = SparkErrorWrapper(
+        new Exception("this")
+      )
+      val err2 = ColumnTypeError("myColumn", StringType, StringType)
+
+      err.equals(err2) shouldBe false
+    }
   }
 
 }