ErrorContains:    " has panicked: Start panicking!",
		},
	}
}

func mutationAnnotationValue(configuration, webhook string, mutated bool) string {
	return fmt.Sprintf(`{"configuration":"%s","webhook":"%s","mutated":%t}`, configuration, webhook, mutated)
}

func patchAnnotationValue(configuration, webhook string, patch string) string {

// will discard the managed fields from the copy.
// The specified object is expected to be a meta.Object or a "list".
// The specified object obj is treated as readonly and hence not mutated.
// On return, an error is set if the function runs into any error while
// removing the managed fields, the boolean value is true if the copy has
// been made successfully, otherwise false.

	copiedGateway := copied.Spec.(*networking.Gateway)
	copiedGateway.Selector = map[string]string{"app": "test"}

	gateway := cfg.Spec.(*networking.Gateway)
	if gateway.Selector != nil {
		t.Errorf("Original gateway is mutated")
	}
}

type TestStruct struct {
	Name string `json:"name"`
}

func TestDeepCopyTypes(t *testing.T) {
	cases := []struct {
		input  Spec
		modify func(c Spec) Spec
		option cmp.Option
	}{

type ObjectConvertor interface {
	// Convert attempts to convert one object into another, or returns an error. This
	// method does not mutate the in object, but the in and out object might share data structures,
	// i.e. the out object cannot be mutated without mutating the in object as well.
	// The context argument will be passed to all nested conversions.
	Convert(in, out, context interface{}) error

}

// DNSDoneInfo contains information about the results of a DNS lookup.
type DNSDoneInfo struct {
	// Addrs are the IPv4 and/or IPv6 addresses found in the DNS
	// lookup. The contents of the slice should not be mutated.
	Addrs []net.IPAddr

	// Err is any error that occurred during the DNS lookup.
	Err error

	// Coalesced is whether the Addrs were shared with another
	// caller who was doing the same DNS lookup concurrently.

	if err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
	if bytes.Equal(contents, []byte("aa")) {
		fmt.Fprintf(os.Stderr, "newly written testdata entry was not mutated\n")
		os.Exit(1)
	}
	// The hash of the bytes in the file should match the filename.
	h := []byte(fmt.Sprintf("%x", sha256.Sum256(contents)))
	if !bytes.HasPrefix(h, []byte(fname)) {

			pc := mesh.DefaultProxyConfig()
			proto.Merge(pc, tc.expected)

			assert.Equal(t, merged, pc)
			after, _ := protomarshal.ToJSON(m)
			assert.Equal(t, original, after, "mesh config should not be mutated")
		})
	}
}

func newProxyConfig(name, ns string, spec config.Spec) config.Config {
	return config.Config{
		Meta: config.Meta{
			GroupVersionKind: gvk.ProxyConfig,
			Name:             name,

	if len(errs) != 0 {
		t.Errorf("Unexpected error %v", errs)
	}
	if newCronJob.ResourceVersion != "9" {
		t.Errorf("Incoming resource version on update should not be mutated")
	}
}

func TestStrategy_ResetFields(t *testing.T) {
	resetFields := Strategy.GetResetFields()
	if len(resetFields) != 2 {
		t.Errorf("ResetFields should have 2 elements, but have %d", len(resetFields))

	// DeclTypes.
	DeclTypes []*apiservercel.DeclType
}

// Extend returns an EnvSet based on this EnvSet but extended with given VersionedOptions.
// This EnvSet is not mutated.
// The returned EnvSet has the same compatibility version as the EnvSet that was extended.
//
// Extend is an expensive operation and each call to Extend that adds DeclTypes increases

      return new LockFreeBitArray(toPlainArray(data));
    }

    /**
     * Combines the two BitArrays using bitwise OR.
     *
     * <p>NOTE: Because of the use of atomics, if the other LockFreeBitArray is being mutated while
     * this operation is executing, not all of those new 1's may be set in the final state of this
     * LockFreeBitArray. The ONLY guarantee provided is that all the bits that were set in the other