1 files changed, 25 insertions, 0 deletions
diff --git a/libgo/go/net/http/httptest/recorder_test.go b/libgo/go/net/http/httptest/recorder_test.go
index a865e87..8cb32dd 100644
--- a/libgo/go/net/http/httptest/recorder_test.go
+++ b/libgo/go/net/http/httptest/recorder_test.go
@@ -345,3 +345,28 @@ func TestParseContentLength(t *testing.T) {
 		}
 	}
 }
+
+// Ensure that httptest.Recorder panics when given a non-3 digit (XXX)
+// status HTTP code. See https://golang.org/issues/45353
+func TestRecorderPanicsOnNonXXXStatusCode(t *testing.T) {
+	badCodes := []int{
+		-100, 0, 99, 1000, 20000,
+	}
+	for _, badCode := range badCodes {
+		badCode := badCode
+		t.Run(fmt.Sprintf("Code=%d", badCode), func(t *testing.T) {
+			defer func() {
+				if r := recover(); r == nil {
+					t.Fatal("Expected a panic")
+				}
+			}()
+
+			handler := func(rw http.ResponseWriter, _ *http.Request) {
+				rw.WriteHeader(badCode)
+			}
+			r, _ := http.NewRequest("GET", "http://example.org/", nil)
+			rw := NewRecorder()
+			handler(rw, r)
+		})
+	}
+}