d8714e64e4
* Rename middleware to plugin first pass; mostly used 'sed', few spots where I manually changed text. This still builds a coredns binary. * fmt error * Rename AddMiddleware to AddPlugin * Readd AddMiddleware to remain backwards compat
87 lines
2.3 KiB
Go
87 lines
2.3 KiB
Go
package proxy
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import (
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"fmt"
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"net/http"
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"net/http/httptest"
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"strings"
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"sync/atomic"
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"testing"
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"time"
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"github.com/mholt/caddy/caddyfile"
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)
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func TestStop(t *testing.T) {
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config := "proxy . %s {\n health_check /healthcheck:%s %dms \n}"
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tests := []struct {
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name string
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intervalInMilliseconds int
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numHealthcheckIntervals int
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}{
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{
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"No Healthchecks After Stop - 5ms, 1 intervals",
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5,
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1,
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},
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{
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"No Healthchecks After Stop - 5ms, 2 intervals",
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5,
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2,
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},
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{
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"No Healthchecks After Stop - 5ms, 3 intervals",
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5,
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3,
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},
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}
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for _, test := range tests {
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t.Run(test.name, func(t *testing.T) {
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// Set up proxy.
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var counter int64
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backend := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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r.Body.Close()
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atomic.AddInt64(&counter, 1)
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}))
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defer backend.Close()
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port := backend.URL[17:] // Remove all crap up to the port
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back := backend.URL[7:] // Remove http://
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c := caddyfile.NewDispenser("Testfile", strings.NewReader(fmt.Sprintf(config, back, port, test.intervalInMilliseconds)))
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upstreams, err := NewStaticUpstreams(&c)
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if err != nil {
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t.Error("Expected no error. Got:", err.Error())
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}
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// Give some time for healthchecks to hit the server.
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time.Sleep(time.Duration(test.intervalInMilliseconds*test.numHealthcheckIntervals) * time.Millisecond)
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for _, upstream := range upstreams {
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if err := upstream.Stop(); err != nil {
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t.Error("Expected no error stopping upstream. Got: ", err.Error())
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}
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}
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counterValueAfterShutdown := atomic.LoadInt64(&counter)
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// Give some time to see if healthchecks are still hitting the server.
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time.Sleep(time.Duration(test.intervalInMilliseconds*test.numHealthcheckIntervals) * time.Millisecond)
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if counterValueAfterShutdown == 0 {
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t.Error("Expected healthchecks to hit test server. Got no healthchecks.")
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}
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// health checks are in a go routine now, so one may well occur after we shutdown,
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// but we only ever expect one more
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counterValueAfterWaiting := atomic.LoadInt64(&counter)
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if counterValueAfterWaiting > (counterValueAfterShutdown + 1) {
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t.Errorf("Expected no more healthchecks after shutdown. Got: %d healthchecks after shutdown", counterValueAfterWaiting-counterValueAfterShutdown)
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}
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})
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}
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}
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