diff --git a/test/differenceWith/differenceWith.test.js b/test/differenceWith/differenceWith.test.js
index 61b34fa4b..edeae5bf4 100644
--- a/test/differenceWith/differenceWith.test.js
+++ b/test/differenceWith/differenceWith.test.js
@@ -5,6 +5,7 @@ test('Testing differenceWith', (t) => {
 	//For more information on all the methods supported by tape
 	//Please go to https://github.com/substack/tape
 	t.true(typeof differenceWith === 'function', 'differenceWith is a Function');
+	t.deepEqual(differenceWith([1, 1.2, 1.5, 3, 0], [1.9, 3, 0], (a, b) => Math.round(a) === Math.round(b)), [1, 1.2], "Filters out all values from an array");
 	//t.deepEqual(differenceWith(args..), 'Expected');
 	//t.equal(differenceWith(args..), 'Expected');
 	//t.false(differenceWith(args..), 'Expected');
diff --git a/test/digitize/digitize.test.js b/test/digitize/digitize.test.js
index 435a8b71e..93a67e7eb 100644
--- a/test/digitize/digitize.test.js
+++ b/test/digitize/digitize.test.js
@@ -5,6 +5,7 @@ test('Testing digitize', (t) => {
 	//For more information on all the methods supported by tape
 	//Please go to https://github.com/substack/tape
 	t.true(typeof digitize === 'function', 'digitize is a Function');
+	t.deepEqual(digitize(123), [1, 2, 3], "Converts a number to an array of digits");
 	//t.deepEqual(digitize(args..), 'Expected');
 	//t.equal(digitize(args..), 'Expected');
 	//t.false(digitize(args..), 'Expected');