e2e framework: enable extending TimeoutContext

If we were to add new fields in TimeoutContext, the current users of
NewFrameworkWithCustomTimeouts might run into failures unless they get modified
to also set those new fields. This is error-prone.

A better approach is to let users of NewFrameworkWithCustomTimeouts override
fields by setting just those and use the normal defaults for the others.

test/e2e/framework/framework.go

@@ -27,6 +27,7 @@ import (
 	"math/rand"
 	"os"
 	"path"
+	"reflect"
 	"strings"
 	"time"
 
@@ -144,10 +145,19 @@ type Options struct {
 	GroupVersion *schema.GroupVersion
 }
 
-// NewFrameworkWithCustomTimeouts makes a framework with with custom timeouts.
+// NewFrameworkWithCustomTimeouts makes a framework with custom timeouts.
+// For timeout values that are zero the normal default value continues to
+// be used.
 func NewFrameworkWithCustomTimeouts(baseName string, timeouts *TimeoutContext) *Framework {
 	f := NewDefaultFramework(baseName)
-	f.Timeouts = timeouts
+	in := reflect.ValueOf(timeouts).Elem()
+	out := reflect.ValueOf(f.Timeouts).Elem()
+	for i := 0; i < in.NumField(); i++ {
+		value := in.Field(i)
+		if !value.IsZero() {
+			out.Field(i).Set(value)
+		}
+	}
 	return f
 }
 

test/e2e/framework/internal/unittests/framework_test.go

@@ -0,0 +1,52 @@
+/*
+Copyright 2023 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package framework_test
+
+import (
+	"reflect"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+
+	"k8s.io/kubernetes/test/e2e/framework"
+)
+
+func TestNewFrameworkWithCustomTimeouts(t *testing.T) {
+	defaultF := framework.NewDefaultFramework("test")
+	customTimeouts := &framework.TimeoutContext{
+		PodStart:  5 * time.Second,
+		PodDelete: time.Second,
+	}
+	customF := framework.NewFrameworkWithCustomTimeouts("test", customTimeouts)
+
+	defaultF.Timeouts.PodStart = customTimeouts.PodStart
+	defaultF.Timeouts.PodDelete = customTimeouts.PodDelete
+	assert.Equal(t, customF.Timeouts, defaultF.Timeouts)
+}
+
+func TestNewFramework(t *testing.T) {
+	f := framework.NewDefaultFramework("test")
+
+	timeouts := reflect.ValueOf(f.Timeouts).Elem()
+	for i := 0; i < timeouts.NumField(); i++ {
+		value := timeouts.Field(i)
+		if value.IsZero() {
+			t.Errorf("%s in Framework.Timeouts was not set.", reflect.TypeOf(*f.Timeouts).Field(i).Name)
+		}
+	}
+}