Begin creating integration tests

Makefile

@@ -6,4 +6,5 @@ build:
 	$$GOPATH/bin/go-bindata -pkg dbanon -o src/bindata.go etc/*
 	GO111MODULE=on go get ./...
 	GO111MODULE=on go test $$GOPATH/src/github.com/mpchadwick/dbanon/src
-	GO111MODULE=on go build -ldflags "$(LDFLAGS)" -o dbanon main.go
+	GO111MODULE=on go build -ldflags "$(LDFLAGS)" -o dbanon main.go
+	GO111MODULE=on go test $$GOPATH/src/github.com/mpchadwick/dbanon/integration

integration/dbanon_test.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"os"
+	"os/exec"
+	"path"
+	"path/filepath"
+	"strings"
+	"testing"
+)
+
+var binaryName = "dbanon"
+
+func TestDbanon(t *testing.T) {
+	dir, _ := os.Getwd()
+	parent := filepath.Dir(dir)
+	cmd := exec.Command(path.Join(parent, binaryName))
+	output, _ := cmd.CombinedOutput()
+
+	actual := strings.TrimSpace(string(output))
+
+	if actual != "You must specify a config" {
+		t.Errorf("Got %s expected missing config error", actual)
+	}
+
+}