import (
	"flag"
	"fmt"
	"math/rand"
	"testing"
	"time"
	"unicode/utf8"
)

var wrapSeed = flag.Int64("wrapseed", 0, "use `seed` for wrap test (default auto-seeds)")

func TestWrap(t *testing.T) {
	if *wrapSeed == 0 {
		*wrapSeed = time.Now().UnixNano()
	}
	t.Logf("-wrapseed=%#x\n", *wrapSeed)
	r := rand.New(rand.NewSource(*wrapSeed))

	// Generate words of random length.
	s := "1234567890αβcdefghijklmnopqrstuvwxyz"

		t.Run(tc.name, func(t *testing.T) {
			if !errors.Is(tc.input, tc.new()) {
				t.Error("error doesn't match itself directly")
			}
			if !errors.Is(fmt.Errorf("wrapepd: %w", tc.input), tc.new()) {
				t.Error("error doesn't match itself when wrapped")
			}
			if !tc.matcherFunc(tc.input) {
				t.Errorf("error doesn't get matched by matcherfunc")
			}
			if errors.Is(tc.input, errors.New("foo")) {

// indicates that e does not wrap any error. It is invalid for an
// Unwrap method to return an []error containing a nil error value.
//
// An easy way to create wrapped errors is to call [fmt.Errorf] and apply
// the %w verb to the error argument:
//
//	wrapsErr := fmt.Errorf("... %w ...", ..., err, ...)
//
// Successive unwrapping of an error creates a tree. The [Is] and [As]

		wantText:   "inner error with added context",
		wantUnwrap: wrapped,
	}, {
		err:        fmt.Errorf("%s %w %v", "prefix", wrapped, "suffix"),
		wantText:   "prefix inner error suffix",
		wantUnwrap: wrapped,
	}, {
		err:        fmt.Errorf("%[2]s: %[1]w", wrapped, "positional verb"),
		wantText:   "positional verb: inner error",
		wantUnwrap: wrapped,
	}, {

	"fmt"
	"testing"
)

type errWrapper struct {
	wrapped error
}

func (w errWrapper) Unwrap() error {
	return w.wrapped
}
func (w errWrapper) Error() string {
	return fmt.Sprintf("wrapped: %v", w.wrapped)
}

type errNotWrapper struct {
	wrapped error
}

func (w errNotWrapper) Error() string {
	return fmt.Sprintf("wrapped: %v", w.wrapped)
}

func TestInterrupted(t *testing.T) {

        collector.failures.size() == 1
        collector.failures[0] instanceof TestAssertionFailure

        TestAssertionFailure failure = collector.failures[0]
        failure.message == "This is a wrapped assertion error"
    }

    def "Wrapped assertion errors are emitted as test failure events using JUnit 5"() {
        given:
        setupJUnit5()
        file('src/test/java/org/gradle/JUnitTest.java') << '''
            package org.gradle;

// WRAPPED-NEXT: tf_executor.graph {
// WRAPPED-NEXT:   tf_executor.island wraps "tf.Const"() <{value = dense<1.000000e+00> : tensor<186xf32>}> {device = ""} : () -> tensor<186xf32>
// WRAPPED-NEXT:   tf_executor.island wraps "tf.Const"() <{value = dense<2.000000e+00> : tensor<186xf32>}> {device = ""} : () -> tensor<186xf32>
// WRAPPED-NEXT:   tf_executor.island wraps "tfl.custom_tf"

			b.Fatal("As failed")
		}
	}
}

func TestUnwrap(t *testing.T) {
	err1 := errors.New("1")
	erra := wrapped{"wrap 2", err1}

	testCases := []struct {
		err  error
		want error
	}{
		{nil, nil},
		{wrapped{"wrapped", nil}, nil},
		{err1, nil},
		{erra, err1},
		{wrapped{"wrap 3", erra}, erra},
	}
	for _, tc := range testCases {
		if got := errors.Unwrap(tc.err); got != tc.want {

		if IsAggregatedDiscoveryGVK(mediaType.Convert) {
			wrapped.aggHandler.ServeHTTP(resp, req)
			return
		}
	}
	wrapped.handler.ServeHTTP(resp, req)
}

func (wrapped *WrappedHandler) restfulHandle(req *restful.Request, resp *restful.Response) {
	wrapped.ServeHTTP(resp.ResponseWriter, req.Request)
}

func (wrapped *WrappedHandler) GenerateWebService(prefix string, returnType interface{}) *restful.WebService {

				ResponseWriter: w,
				counter:        counterGot,
			}
			wrapped := WrapForHTTP1Or2(decorator)

			assertCloseNotifierFlusherHijacker(t, true, wrapped)

			originalGot := GetOriginal(wrapped)
			if originalWant != originalGot {
				t.Errorf("Expected GetOriginal to return the original ResponseWriter object")
				return
			}

			h.ServeHTTP(wrapped, r)
		})
	}