Adding tests and using new gopath domain

Signed-off-by: Christopher Hein <me@chrishein.com>

go.mod

@@ -0,0 +1,3 @@
+module go.hein.dev/go-version
+
+go 1.12

readme.adoc

@@ -15,7 +15,7 @@ package main
 
 import (
 	"fmt"
-	goVersion "github.com/christopherhein/go-version"
+	goversion "go.hein.dev/go-version"
 	"github.com/spf13/cobra"
 )
 
@@ -30,7 +30,7 @@ var (
 		Long:  ``,
 		Run: func(_ *cobra.Command, _ []string) {
 			var response string
-			versionOutput := goVersion.New(version, commit, date)
+			versionOutput := goversion.New(version, commit, date)
 
 			if shortened {
 				response = versionOutput.ToShortened()
@@ -75,6 +75,15 @@ Commit: <SOMEHASH>
 Date: <SOMEDATE>
 ----
 
+== Testing
+
+To run the test suite all you need to do is run.
+
+[source,shell]
+----
+go test -v ./...
+----
+
 == Contributing
 
 If you want to contribute check out

version_test.go

@@ -0,0 +1,27 @@
+package version
+
+import "testing"
+
+func TestToJSON(t *testing.T) {
+	v := New("dev", "fee8dd1f7c24da23508e26347694be0acce5631b", "Fri Jun 21 10:50:15 PDT 2019")
+	json := v.ToJSON()
+
+	expected := "{\"Version\":\"dev\",\"Commit\":\"fee8dd1f7c24da23508e26347694be0acce5631b\",\"Date\":\"Fri Jun 21 10:50:15 PDT 2019\"}\n"
+	if json != expected {
+		t.Errorf("Expected json %s to equal %s", json, expected)
+	}
+}
+
+func TestToShortened(t *testing.T) {
+	v := New("dev", "fee8dd1f7c24da23508e26347694be0acce5631b", "Fri Jun 21 10:50:15 PDT 2019")
+	short := v.ToShortened()
+
+	expected := `Version: dev
+Commit: fee8dd1f7c24da23508e26347694be0acce5631b
+Date: Fri Jun 21 10:50:15 PDT 2019
+`
+
+	if short != expected {
+		t.Errorf("Expected shortened %s to equal %s", short, expected)
+	}
+}