github.com/argoproj/argo-cd/v3@v3.2.1/util/healthz/healthz_test.go (about)

     1  package healthz
     2  
     3  import (
     4  	"errors"
     5  	"net"
     6  	"net/http"
     7  	"testing"
     8  
     9  	"github.com/stretchr/testify/require"
    10  )
    11  
    12  func TestHealthCheck(t *testing.T) {
    13  	sentinel := false
    14  
    15  	serve := func(c chan<- string) {
    16  		// listen on first available dynamic (unprivileged) port
    17  		listener, err := net.Listen("tcp", ":0")
    18  		if err != nil {
    19  			panic(err)
    20  		}
    21  
    22  		// send back the address so that it can be used
    23  		c <- listener.Addr().String()
    24  
    25  		mux := http.NewServeMux()
    26  		ServeHealthCheck(mux, func(_ *http.Request) error {
    27  			if sentinel {
    28  				return errors.New("This is a dummy error")
    29  			}
    30  			return nil
    31  		})
    32  		panic(http.Serve(listener, mux))
    33  	}
    34  
    35  	c := make(chan string, 1)
    36  
    37  	// run a local webserver to test data retrieval
    38  	go serve(c)
    39  
    40  	address := <-c
    41  	t.Logf("Listening at address: %s", address)
    42  
    43  	server := "http://" + address
    44  
    45  	resp, err := http.Get(server + "/healthz")
    46  	require.NoError(t, err)
    47  	require.Equalf(t, http.StatusOK, resp.StatusCode, "Was expecting status code 200 from health check, but got %d instead", resp.StatusCode)
    48  
    49  	sentinel = true
    50  
    51  	resp, _ = http.Get(server + "/healthz")
    52  	require.Equalf(t, http.StatusServiceUnavailable, resp.StatusCode, "Was expecting status code 503 from health check, but got %d instead", resp.StatusCode)
    53  }