add unit test pipeline

.github/workflows/unit-test.yml

@@ -0,0 +1,26 @@
+name: Unit Tests
+on: [ push, pull_request ]
+jobs:
+  build:
+    name: Build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install gotip
+        run: |
+          git clone --depth=1 https://go.googlesource.com/go $HOME/gotip
+          cd $HOME/gotip/src
+          ./make.bash
+          echo "GOROOT=$HOME/gotip" >> $GITHUB_ENV
+          echo "$HOME/gotip/bin:$PATH" >> $GITHUB_PATH
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v2
+
+      - name: Get dependencies
+        run: |
+          go get -v -t -d ./...
+          if [ -f Gopkg.toml ]; then
+              curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
+              dep ensure
+          fi
+      - name: Test
+        run: go test -v ./...

README.md

@@ -2,7 +2,6 @@
 
 ![License](https://img.shields.io/github/license/rjNemo/underscore?style=for-the-badge)
 ![Go version](https://img.shields.io/github/go-mod/go-version/rjNemo/underscore?style=for-the-badge)
-
 ![test coverage](https://img.shields.io/badge/Test%20Coverage-100%25-brightgreen.svg?longCache=true&style=for-the-badge)
 
 ![underscore](https://socialify.git.ci/rjNemo/underscore/image?description=1&font=Raleway&language=1&logo=https%3A%2F%2Fgithub.com%2FrjNemo%2Funderscore%2Fblob%2Fmain%2Fdocs%2Fstatic%2Flogo.png%3Fraw%3Dtrue&name=1&pattern=Floating%20Cogs&theme=Light)

examples/chaining.go

@@ -6,7 +6,7 @@ import (
 	u "github.com/rjNemo/underscore"
 )
 
-func main() {
+func chaining() {
 	sum := u.NewChain([]int{1, 2, 3, 4, 5, 6, 7, 8, 9}).
 		// filter even numbers from the slice
 		Filter(func(n int) bool { return n%2 == 0 }).

examples/filterMapReduce.go

@@ -6,7 +6,7 @@ import (
 	u "github.com/rjNemo/underscore"
 )
 
-func main() {
+func filterMapReduce() {
 	numbers := []int{1, 2, 3, 4, 5, 6, 7, 8, 9}
 	// filter even numbers from the slice
 	evens := u.Filter(numbers, func(n int) bool { return n%2 == 0 })