text = null - retrun false (tests)

src/libraries/Microsoft.Extensions.Primitives/tests/StringSegmentTest.cs

@@ -462,6 +462,8 @@ public static TheoryData<string, StringComparison, bool> EqualsStringData
                 {
                     { "eLLo", StringComparison.OrdinalIgnoreCase, true },
                     { "eLLo", StringComparison.Ordinal, false },
+                    { null, StringComparison.OrdinalIgnoreCase, false },
+                    { null, StringComparison.Ordinal, false },
                 };
             }
         }
@@ -480,17 +482,6 @@ public void StringSegment_Equals_String_Valid(string candidate, StringComparison
             Assert.Equal(expectedResult, result);
         }
 
-        [Fact]
-        public void StringSegment_Equals_NullString_Throws()
-        {
-            // Arrange
-            var segment = new StringSegment();
-
-            // Act & assert
-            Assert.Throws<ArgumentNullException>("text", () => segment.Equals((string)null));
-            Assert.Throws<ArgumentNullException>("text", () => segment.Equals((string)null, StringComparison.Ordinal));
-        }
-
         [Fact]
         public void StringSegment_Equals_String_InvalidComparisonType_Throws()
         {