Use AssertExtensions for new test only

Author: hez2010

src/libraries/System.Numerics.Vectors/tests/Matrix4x4Tests.cs

@@ -819,7 +819,6 @@ public void Matrix4x4CreateReflectionTest01()
                     Vector3 v = point - pp;
                     float d = Vector3.Dot(v, plane.Normal);
                     Vector3 vp = point - 2.0f * d * plane.Normal;
-
                     Assert.True(MathHelper.Equal(rp, vp), "Matrix4x4.CreateReflection did not provide expected value.");
                 }
             }
@@ -831,28 +830,25 @@ public void Matrix4x4CreateReflectionTest02()
             Plane plane = new Plane(0, 1, 0, 60);
             Matrix4x4 actual = Matrix4x4.CreateReflection(plane);
 
-            Matrix4x4 expected = new Matrix4x4();
-            expected.M11 = 1.0f;
-            expected.M12 = 0.0f;
-            expected.M13 = 0.0f;
-            expected.M14 = 0.0f;
-
-            expected.M21 = 0.0f;
-            expected.M22 = -1.0f;
-            expected.M23 = 0.0f;
-            expected.M24 = 0.0f;
-
-            expected.M31 = 0.0f;
-            expected.M32 = 0.0f;
-            expected.M33 = 1.0f;
-            expected.M34 = 0.0f;
-
-            expected.M41 = 0.0f;
-            expected.M42 = -120.0f;
-            expected.M43 = 0.0f;
-            expected.M44 = 1.0f;
-
-            Assert.True(MathHelper.Equal(expected, actual), "Matrix4x4.CreateReflection did not return the expected value.");
+            AssertExtensions.Equal(1.0f, actual.M11, 0.0f);
+            AssertExtensions.Equal(0.0f, actual.M12, 0.0f);
+            AssertExtensions.Equal(0.0f, actual.M13, 0.0f);
+            AssertExtensions.Equal(0.0f, actual.M14, 0.0f);
+
+            AssertExtensions.Equal(0.0f, actual.M21, 0.0f);
+            AssertExtensions.Equal(-1.0f, actual.M22, 0.0f);
+            AssertExtensions.Equal(0.0f, actual.M23, 0.0f);
+            AssertExtensions.Equal(0.0f, actual.M24, 0.0f);
+
+            AssertExtensions.Equal(0.0f, actual.M31, 0.0f);
+            AssertExtensions.Equal(0.0f, actual.M32, 0.0f);
+            AssertExtensions.Equal(1.0f, actual.M33, 0.0f);
+            AssertExtensions.Equal(0.0f, actual.M34, 0.0f);
+
+            AssertExtensions.Equal(0.0f, actual.M41, 0.0f);
+            AssertExtensions.Equal(-120.0f, actual.M42, 0.0f);
+            AssertExtensions.Equal(0.0f, actual.M43, 0.0f);
+            AssertExtensions.Equal(1.0f, actual.M44, 0.0f);
         }
 
         // A test for CreateRotationZ (float)