diff --git a/ChangeLog.md b/ChangeLog.md
--- a/ChangeLog.md
+++ b/ChangeLog.md
@@ -1,5 +1,9 @@
 # Changelog for variadic-function
 
+## Changes in 0.1.0.2
+
+- Improve test coverage
+
 ## Changes in 0.1.0.1
 
 - Fix markup in README
diff --git a/test/Spec.hs b/test/Spec.hs
--- a/test/Spec.hs
+++ b/test/Spec.hs
@@ -6,11 +6,19 @@
 
 main :: IO ()
 main = hspec $ do
-  describe "Variadic function" $ do
-    it "transforms function" $ do
+  describe "createFunction" $ do
+    it "constN " $ do
+      constN "one" () () `shouldBe` "one"
+
+    it "mappendN" $ do
+      mappendN [1] [2, 3] `shouldBe` [1, 2, 3]
+
+  describe "transformFunction" $ do
+    it "composeN" $ do
       let f :: Int -> Int -> Int -> String
           f = show `composeN` \a b c -> a + b + c
       f 1 2 3 `shouldBe` "6"
-    it "transforms function with inferred type" $ do
+
+    it "composeN with inferred type" $ do
       let f = show `composeN` \a b c -> (a + b + c :: Int)
       f 1 2 3 `shouldBe` "6"
diff --git a/variadic-function.cabal b/variadic-function.cabal
--- a/variadic-function.cabal
+++ b/variadic-function.cabal
@@ -5,7 +5,7 @@
 -- see: https://github.com/sol/hpack
 
 name:           variadic-function
-version:        0.1.0.1
+version:        0.1.0.2
 synopsis:       Create and transform functions with variable arity.
 description:    Please see the README on GitHub at <https://github.com/lykahb/variadic-function#readme>
 category:       Data, Functions