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113 lines
2.5 KiB
Go
113 lines
2.5 KiB
Go
// white-box testing
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package host
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import (
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"bytes"
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"context"
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"crypto/tls"
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"log"
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"net"
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"net/http"
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"strings"
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"testing"
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"github.com/gavv/httpexpect"
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)
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const (
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debug = false
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)
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func newTester(t *testing.T, baseURL string, handler http.Handler) *httpexpect.Expect {
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var transporter http.RoundTripper
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if strings.HasPrefix(baseURL, "http") { // means we are testing real serve time
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transporter = &http.Transport{
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TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
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}
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} else { // means we are testing the handler itself
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transporter = httpexpect.NewBinder(handler)
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}
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testConfiguration := httpexpect.Config{
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BaseURL: baseURL,
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Client: &http.Client{
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Transport: transporter,
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Jar: httpexpect.NewJar(),
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},
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Reporter: httpexpect.NewAssertReporter(t),
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}
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if debug {
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testConfiguration.Printers = []httpexpect.Printer{
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httpexpect.NewDebugPrinter(t, true),
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}
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}
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return httpexpect.WithConfig(testConfiguration)
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}
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func testSupervisor(t *testing.T, creator func(*http.Server, []func(TaskHost)) *Supervisor) {
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loggerOutput := &bytes.Buffer{}
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logger := log.New(loggerOutput, "", 0)
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const (
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expectedHelloMessage = "Hello\n"
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)
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// http routing
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expectedBody := "this is the response body\n"
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mux := http.NewServeMux()
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mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
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_, err := w.Write([]byte(expectedBody))
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if err != nil {
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t.Fatal(err)
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}
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})
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// host (server wrapper and adapter) construction
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srv := &http.Server{Handler: mux, ErrorLog: logger}
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addr := "localhost:5525"
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// serving
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ln, err := net.Listen("tcp4", addr)
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if err != nil {
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t.Fatal(err)
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}
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helloMe := func(_ TaskHost) {
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logger.Print(expectedHelloMessage)
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}
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host := creator(srv, []func(TaskHost){helloMe})
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defer host.Shutdown(context.TODO())
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go host.Serve(ln)
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// http testsing and various calls
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// no need for time sleep because the following will take some time by theirselves
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tester := newTester(t, "http://"+addr, mux)
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tester.Request("GET", "/").Expect().Status(http.StatusOK).Body().Equal(expectedBody)
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// WARNING: Data Race here because we try to read the logs
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// but it's "safe" here.
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// testing Task (recorded) message:
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if got := loggerOutput.String(); expectedHelloMessage != got {
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t.Fatalf("expected hello Task's message to be '%s' but got '%s'", expectedHelloMessage, got)
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}
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}
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func TestSupervisor(t *testing.T) {
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testSupervisor(t, func(srv *http.Server, tasks []func(TaskHost)) *Supervisor {
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su := New(srv)
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for _, t := range tasks {
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su.RegisterOnServe(t)
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}
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return su
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})
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}
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