diff --git a/test/mapValues/mapValues.test.js b/test/mapValues/mapValues.test.js
index 741e4f4f3..273ada753 100644
--- a/test/mapValues/mapValues.test.js
+++ b/test/mapValues/mapValues.test.js
@@ -5,9 +5,14 @@ test('Testing mapValues', (t) => {
   //For more information on all the methods supported by tape
   //Please go to https://github.com/substack/tape
   t.true(typeof mapValues === 'function', 'mapValues is a Function');
+  const users = {
+    fred: { user: 'fred', age: 40 },
+    pebbles: { user: 'pebbles', age: 1 }
+  };
+  t.deepEqual(mapValues(users, u => u.age), { fred: 40, pebbles: 1 }, 'Maps values');
   //t.deepEqual(mapValues(args..), 'Expected');
   //t.equal(mapValues(args..), 'Expected');
   //t.false(mapValues(args..), 'Expected');
   //t.throws(mapValues(args..), 'Expected');
   t.end();
-});
\ No newline at end of file
+});
diff --git a/test/matches/matches.test.js b/test/matches/matches.test.js
index 82fd66a08..e28065fa5 100644
--- a/test/matches/matches.test.js
+++ b/test/matches/matches.test.js
@@ -5,9 +5,11 @@ test('Testing matches', (t) => {
   //For more information on all the methods supported by tape
   //Please go to https://github.com/substack/tape
   t.true(typeof matches === 'function', 'matches is a Function');
+  t.true(matches({ age: 25, hair: 'long', beard: true }, { hair: 'long', beard: true }), 'Matches returns true for two similar objects');
+  t.false(matches({ hair: 'long', beard: true }, { age: 25, hair: 'long', beard: true }), 'Matches returns false for two non-similar objects');
   //t.deepEqual(matches(args..), 'Expected');
   //t.equal(matches(args..), 'Expected');
   //t.false(matches(args..), 'Expected');
   //t.throws(matches(args..), 'Expected');
   t.end();
-});
\ No newline at end of file
+});
diff --git a/test/matchesWith/matchesWith.test.js b/test/matchesWith/matchesWith.test.js
index b7f696224..9ce717785 100644
--- a/test/matchesWith/matchesWith.test.js
+++ b/test/matchesWith/matchesWith.test.js
@@ -5,9 +5,15 @@ test('Testing matchesWith', (t) => {
   //For more information on all the methods supported by tape
   //Please go to https://github.com/substack/tape
   t.true(typeof matchesWith === 'function', 'matchesWith is a Function');
+  const isGreeting = val => /^h(?:i|ello)$/.test(val);
+  t.true(matchesWith(
+    { greeting: 'hello' },
+    { greeting: 'hi' },
+    (oV, sV) => isGreeting(oV) && isGreeting(sV)
+  ), 'Returns true for two objects with similar values, based on the provided function');
   //t.deepEqual(matchesWith(args..), 'Expected');
   //t.equal(matchesWith(args..), 'Expected');
   //t.false(matchesWith(args..), 'Expected');
   //t.throws(matchesWith(args..), 'Expected');
   t.end();
-});
\ No newline at end of file
+});
diff --git a/test/testlog b/test/testlog
index 86b81e2d7..69a133302 100644
--- a/test/testlog
+++ b/test/testlog
@@ -1,4 +1,4 @@
-Test log for: Sat Feb 03 2018 13:28:38 GMT+0200 (GTB Standard Time)
+Test log for: Sat Feb 03 2018 13:32:50 GMT+0200 (GTB Standard Time)
 
 > 30-seconds-of-code@0.0.1 test G:\My Files\git Repositories\30-seconds-of-code
 > tape test/**/*.test.js | tap-spec
@@ -918,6 +918,7 @@ Test log for: Sat Feb 03 2018 13:28:38 GMT+0200 (GTB Standard Time)
   Testing mapValues
 
     √ mapValues is a Function
+    √ Maps values
 
   Testing mask
 
@@ -929,10 +930,13 @@ Test log for: Sat Feb 03 2018 13:28:38 GMT+0200 (GTB Standard Time)
   Testing matches
 
     √ matches is a Function
+    √ Matches returns true for two similar objects
+    √ Matches returns false for two non-similar objects
 
   Testing matchesWith
 
     √ matchesWith is a Function
+    √ Returns true for two objects with similar values, based on the provided function
 
   Testing maxBy
 
@@ -1691,8 +1695,8 @@ Test log for: Sat Feb 03 2018 13:28:38 GMT+0200 (GTB Standard Time)
     √ Works with multiple promises
 
 
-  total:     795
-  passing:   795
+  total:     799
+  passing:   799
   duration:  2.4s