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http: make tests quiet, fixing a test race
R=golang-dev, r CC=golang-dev https://golang.org/cl/4754044
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@ -110,7 +110,6 @@ func TestConsumingBodyOnNextConn(t *testing.T) {
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listener := &oneConnListener{conn}
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handler := func(res ResponseWriter, req *Request) {
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reqNum++
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t.Logf("Got request #%d: %v", reqNum, req)
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ch <- req
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}
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@ -119,7 +118,6 @@ func TestConsumingBodyOnNextConn(t *testing.T) {
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}()
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var req *Request
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t.Log("Waiting for first request.")
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req = <-ch
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if req == nil {
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t.Fatal("Got nil first request.")
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@ -129,7 +127,6 @@ func TestConsumingBodyOnNextConn(t *testing.T) {
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req.Method, "POST")
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}
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t.Log("Waiting for second request.")
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req = <-ch
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if req == nil {
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t.Fatal("Got nil first request.")
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@ -139,7 +136,6 @@ func TestConsumingBodyOnNextConn(t *testing.T) {
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req.Method, "POST")
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}
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t.Log("Waiting for EOF.")
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if serveerr := <-servech; serveerr != os.EOF {
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t.Errorf("Serve returned %q; expected EOF", serveerr)
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}
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@ -788,7 +784,24 @@ func TestZeroLengthPostAndResponse(t *testing.T) {
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}
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func TestHandlerPanic(t *testing.T) {
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log.SetOutput(ioutil.Discard) // is noisy otherwise
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// Unlike the other tests that set the log output to ioutil.Discard
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// to quiet the output, this test uses a pipe. The pipe serves three
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// purposes:
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//
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// 1) The log.Print from the http server (generated by the caught
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// panic) will go to the pipe instead of stderr, making the
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// output quiet.
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//
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// 2) We read from the pipe to verify that the handler
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// actually caught the panic and logged something.
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//
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// 3) The blocking Read call prevents this TestHandlerPanic
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// function from exiting before the HTTP server handler
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// finishes crashing. If this text function exited too
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// early (and its defer log.SetOutput(os.Stderr) ran),
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// then the crash output could spill into the next test.
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pr, pw := io.Pipe()
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log.SetOutput(pw)
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defer log.SetOutput(os.Stderr)
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ts := httptest.NewServer(HandlerFunc(func(ResponseWriter, *Request) {
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@ -799,6 +812,25 @@ func TestHandlerPanic(t *testing.T) {
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if err == nil {
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t.Logf("expected an error")
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}
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// Do a blocking read on the log output pipe so its logging
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// doesn't bleed into the next test. But wait only 5 seconds
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// for it.
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done := make(chan bool)
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go func() {
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buf := make([]byte, 1024)
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_, err := pr.Read(buf)
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if err != nil {
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t.Fatal(err)
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}
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done <- true
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}()
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select {
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case <-done:
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return
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case <-time.After(5e9):
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t.Error("expected server handler to log an error")
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}
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}
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func TestNoDate(t *testing.T) {
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