a first system test! for kt topic...

Makefile

@@ -4,19 +4,19 @@ export OS=$(shell uname | tr '[:upper:]' '[:lower:]')
 
 build: GOOS ?= ${OS}
 build: GOARCH ?= amd64
-build: test
+build:
 	rm -f kt
 	GOOS=${GOOS} GOARCH=${GOARCH} go build -ldflags "-X main.buildTime=`date --iso-8601=s` -X main.buildVersion=`git rev-parse HEAD | cut -c-7`" .
 
-release-linux:
+release-linux: test
 	GOOS=linux $(MAKE) build
 	tar Jcf kt-`git describe --abbrev=0 --tags`-linux-amd64.txz kt
 
 release-darwin:
 	GOOS=darwin $(MAKE) build
 	tar Jcf kt-`git describe --abbrev=0 --tags`-darwin-amd64.txz kt
 
-release: clean release-linux release-darwin
+release: test clean release-linux release-darwin
 
 test:
 	go test -v

system_test.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"bytes"
+	"os"
+	"os/exec"
+	"syscall"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+func cmd(t *testing.T, name string, args ...string) (int, string, string) {
+	cmd := exec.Command(name, args...)
+	var stdOut, stdErr bytes.Buffer
+	cmd.Stdout = &stdOut
+	cmd.Stderr = &stdErr
+	cmd.Env = os.Environ()
+	cmd.Env = append(cmd.Env, "KT_BROKERS=localhost:9092")
+	_ = cmd.Run()
+	status := cmd.ProcessState.Sys().(syscall.WaitStatus)
+	return status.ExitStatus(), stdOut.String(), stdErr.String()
+}
+
+func build(t *testing.T) {
+	var status int
+
+	status, _, _ = cmd(t, "make", "build")
+	require.Zero(t, status)
+
+	status, _, _ = cmd(t, "ls", "kt")
+	require.Zero(t, status)
+}
+
+func TestSystem(t *testing.T) {
+	build(t)
+
+	status, out, err := cmd(t, "./kt", "topic")
+	require.Zero(t, status)
+	require.Empty(t, err)
+	require.JSONEq(t, `{"name": "kt-test"}`, out)
+}