Add missing test coverage for

org.apache.commons.lang3.reflect.TypeUtils.toString(Type)

Author: garydgregory

src/test/java/org/apache/commons/lang3/reflect/TypeUtilsTest.java

@@ -1043,6 +1043,14 @@ void testToLongString() {
         assertEquals(getClass().getName() + ".MyInnerClass.MyInnerClass2:X", TypeUtils.toLongString(MyInnerClass.MyInnerClass2.class.getTypeParameters()[0]));
     }
 
+    @Test
+    void testToString() {
+        assertThrows(NullPointerException.class, () -> TypeUtils.toString(null));
+        assertThrows(IllegalArgumentException.class, () -> TypeUtils.toString(new Type() {
+            // empty
+        }));
+    }
+
     @Test
     void testToString_LANG_1311() {
         assertEquals("int[]", TypeUtils.toString(int[].class));