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// Copyright 2020 New Relic Corporation. All rights reserved.
// SPDX-License-Identifier: Apache-2.0
package newrelic
import (
"net/http"
"net/http/httptest"
"testing"
"github.com/newrelic/go-agent/v3/internal"
)
func TestSetWebResponseNil(t *testing.T) {
// Test that the methods of the txn.SetWebResponse(nil) return value
// writer can safely be called.
app := testApp(nil, nil, t)
txn := app.StartTransaction("hello")
rw := txn.SetWebResponse(nil)
rw.WriteHeader(123)
if hdr := rw.Header(); hdr != nil {
t.Error(hdr)
}
n, err := rw.Write([]byte("should not panic"))
if err != nil || n != 0 {
t.Error(err, n)
}
txn.End()
app.ExpectTxnEvents(t, []internal.WantEvent{{
AgentAttributes: map[string]interface{}{
"httpResponseCode": 123,
"http.statusCode": 123,
},
Intrinsics: map[string]interface{}{"name": "OtherTransaction/Go/hello"},
}})
}
func TestSetWebResponseSuccess(t *testing.T) {
// Test that the return value of txn.SetWebResponse delegates to the
// input writer.
app := testApp(nil, nil, t)
txn := app.StartTransaction("hello")
w := httptest.NewRecorder()
rw := txn.SetWebResponse(w)
rw.WriteHeader(123)
hdr := rw.Header()
hdr.Set("zip", "zap")
body := "should not panic"
n, err := rw.Write([]byte(body))
if err != nil || n != len(body) {
t.Error(err, n)
}
txn.End()
if w.Code != 123 {
t.Error(w.Code)
}
if w.HeaderMap.Get("zip") != "zap" {
t.Error(w.HeaderMap)
}
if w.Body.String() != body {
t.Error(w.Body.String())
}
app.ExpectTxnEvents(t, []internal.WantEvent{{
AgentAttributes: map[string]interface{}{
"httpResponseCode": 123,
"http.statusCode": 123,
},
Intrinsics: map[string]interface{}{"name": "OtherTransaction/Go/hello"},
}})
}
type writerWithFlush struct{}
func (w writerWithFlush) Header() http.Header { return nil }
func (w writerWithFlush) WriteHeader(int) {}
func (w writerWithFlush) Write([]byte) (int, error) { return 0, nil }
func (w writerWithFlush) Flush() {}
func TestSetWebResponseTxnUpgraded(t *testing.T) {
// Test that the writer returned by SetWebResponse has the optional
// methods of the input writer.
app := testApp(nil, nil, t)
txn := app.StartTransaction("hello")
rw := txn.SetWebResponse(writerWithFlush{})
if _, ok := rw.(http.Flusher); !ok {
t.Error("should have Flusher now")
}
}
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