Get headers in Go 1.13

1 files changed, 10 insertions, 3 deletions

diff --git a/test/acceptance/serving_test.go b/test/acceptance/serving_test.go
index 99afd25f..6afa9560 100644
--- a/test/acceptance/serving_test.go
+++ b/test/acceptance/serving_test.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"io/ioutil"
 	"net/http"
+	"net/textproto"
 	"os"
 	"path"
 	"strings"
@@ -678,9 +679,7 @@ func TestServerRepliesWithHeaders(t *testing.T) {
 				require.Equal(t, http.StatusOK, rsp.StatusCode)
 
 				for key, value := range test.expectedHeaders {
-					fmt.Printf("expected key: %q - value: %+v\n", key, value)
-					got := rsp.Header.Values(key)
-					fmt.Printf("got key: %q - value: %+v\n", key, got)
+					got := headerValues(rsp.Header, key)
 					require.Equal(t, value, got)
 				}
 			}
@@ -712,3 +711,11 @@ func TestServerRepliesWithHeaders(t *testing.T) {
 		})
 	}
 }
+
+func headerValues(header http.Header, key string) []string {
+	h := textproto.MIMEHeader(header)
+
+	// NOTE: cannot use header.Values() in Go 1.13 or lower, this is the implementation
+	// from Go 1.15 https://github.com/golang/go/blob/release-branch.go1.15/src/net/textproto/header.go#L46
+	return h[textproto.CanonicalMIMEHeaderKey(key)]
+}