diff --git a/test/toSafeInteger/toSafeInteger.test.js b/test/toSafeInteger/toSafeInteger.test.js
index 508da718a..885f6e324 100644
--- a/test/toSafeInteger/toSafeInteger.test.js
+++ b/test/toSafeInteger/toSafeInteger.test.js
@@ -5,14 +5,20 @@ test('Testing toSafeInteger', (t) => {
   //For more information on all the methods supported by tape
   //Please go to https://github.com/substack/tape
   t.true(typeof toSafeInteger === 'function', 'toSafeInteger is a Function');
+  t.true(Number(toSafeInteger(3.2)), 'Number(toSafeInteger(3.2)) is a number');
   t.equal(toSafeInteger(3.2), 3, "Converts a value to a safe integer");
-  t.equal(toSafeInteger('4.2'), 4, "Converts a value to a safe integer");
-  t.equal(toSafeInteger(4.6), 5, "Converts a value to a safe integer");
-  t.equal(toSafeInteger(1.5), 2, "Converts a value to a safe integer");
-  t.equal(toSafeInteger(Infinity), 9007199254740991, "Converts a value to a safe integer");
-  //t.deepEqual(toSafeInteger(args..), 'Expected');
-  //t.equal(toSafeInteger(args..), 'Expected');
-  //t.false(toSafeInteger(args..), 'Expected');
-  //t.throws(toSafeInteger(args..), 'Expected');
+  t.equal(toSafeInteger('4.2'), 4, "toSafeInteger('4.2') returns 4");
+  t.equal(toSafeInteger(4.6), 5, "toSafeInteger(4.6) returns 5");
+  t.equal(toSafeInteger([]), 0, "toSafeInteger([]) returns 0");
+  t.true(isNaN(toSafeInteger([1.5, 3124])), "isNaN(toSafeInteger([1.5, 3124])) is true");
+  t.true(isNaN(toSafeInteger('string')), "isNaN(toSafeInteger('string')) is true");
+  t.true(isNaN(toSafeInteger({})), "isNaN(toSafeInteger({})) is true");
+  t.true(isNaN(toSafeInteger()), "isNaN(toSafeInteger()) is true");
+  t.equal(toSafeInteger(Infinity), 9007199254740991, "toSafeInteger(Infinity) returns 9007199254740991");
+
+  let start = new Date().getTime();
+  toSafeInteger(3.2);
+  let end = new Date().getTime();
+  t.true((end - start) < 2000, 'toSafeInteger(3.2) takes less than 2s to run');
   t.end();
-});
\ No newline at end of file
+});