// Copyright (c) The EfficientGo Authors.
// Licensed under the Apache License 2.0.

package testutil

import (
	
	
	
	
	
	

	
	
	
	
)

const limitOfElemChars = 1e3

func withLimitf( string,  ...interface{}) string {
	 := fmt.Sprintf(, ...)
	if len() > limitOfElemChars {
		return [:limitOfElemChars] + "...(output trimmed)"
	}
	return 
}

// Assert fails the test if the condition is false.
func ( testing.TB,  bool,  ...interface{}) {
	.Helper()
	if  {
		return
	}
	, , ,  := runtime.Caller(1)

	var  string
	if len() > 0 {
		 = fmt.Sprintf([0].(string), [1:]...)
	}
	.Fatalf("\033[31m%s:%d: \"%s\"\033[39m\n\n", filepath.Base(), , withLimitf())
}

// Ok fails the test if an err is not nil.
func ( testing.TB,  error,  ...interface{}) {
	.Helper()
	if  == nil {
		return
	}
	, , ,  := runtime.Caller(1)

	var  string
	if len() > 0 {
		 = fmt.Sprintf([0].(string), [1:]...)
	}
	.Fatalf("\033[31m%s:%d: \"%s\"\n\n unexpected error: %s\033[39m\n\n", filepath.Base(), , withLimitf(), withLimitf(.Error()))
}

// NotOk fails the test if an err is nil.
func ( testing.TB,  error,  ...interface{}) {
	.Helper()
	if  != nil {
		return
	}
	, , ,  := runtime.Caller(1)

	var  string
	if len() > 0 {
		 = fmt.Sprintf([0].(string), [1:]...)
	}
	.Fatalf("\033[31m%s:%d: \"%s\"\n\n expected error, got nothing \033[39m\n\n", filepath.Base(), , withLimitf())
}

// Equals fails the test if exp is not equal to act.
func ( testing.TB, ,  interface{},  ...interface{}) {
	.Helper()
	if reflect.DeepEqual(, ) {
		return
	}
	fatalNotEqual(, , , ...)
}

func fatalNotEqual( testing.TB, ,  interface{},  ...interface{}) {
	, , ,  := runtime.Caller(2)

	var  string
	if len() > 0 {
		 = fmt.Sprintf([0].(string), [1:]...)
	}
	.Fatalf(
		"\033[31m%s:%d: \"%s\"\n\n\texp: %s\n\n\tgot: %s%s\033[39m\n\n",
		filepath.Base(), , withLimitf(), withLimitf("%#v", ), withLimitf("%#v", ), withLimitf(diff(, )),
	)
}

type goCmp struct {
	opts cmp.Options
}

// WithGoCmp allows specifying options and using https://github.com/google/go-cmp
// for equality comparisons. The compatibility guarantee of this function's arguments
// are the same as go-cmp (no guarantee due to v0.x).
func ( ...cmp.Option) goCmp {
	return goCmp{opts: }
}

// Equals uses go-cmp for comparing equality between two structs, and can be used with
// various options defined in go-cmp/cmp and go-cmp/cmp/cmpopts.
func ( goCmp) ( testing.TB, ,  interface{},  ...interface{}) {
	.Helper()
	if cmp.Equal(, , .opts) {
		return
	}
	fatalNotEqual(, , , ...)
}

// FaultOrPanicToErr returns error if panic of fault was triggered during execution of function.
func ( func()) ( error) {
	// Set this go routine to panic on segfault to allow asserting on those.
	debug.SetPanicOnFault(true)
	defer func() {
		if  := recover();  != nil {
			 = errors.Newf("invoked function panicked or caused segmentation fault: %v", )
		}
		debug.SetPanicOnFault(false)
	}()

	()

	return 
}

// ContainsStringSlice fails the test if needle is not contained within haystack, if haystack or needle is
// an empty slice, or if needle is longer than haystack.
func ( testing.TB, ,  []string) {
	, , ,  := runtime.Caller(1)

	if !contains(, ) {
		.Fatalf("\033[31m%s:%d: %s does not contain %s\033[39m\n\n", filepath.Base(), , withLimitf("%#v", ), withLimitf("%#v", ))
	}
}

func contains(,  []string) bool {
	if len() == 0 || len() == 0 {
		return false
	}

	if len() < len() {
		return false
	}

	for  := 0;  < len(); ++ {
		 := 

		for  := 0;  < len(); ++ {
			// End of the haystack but not the end of the needle, end
			if  == len() {
				return false
			}

			// No match, try the next index of the haystack
			if [] != [] {
				break
			}

			// End of the needle and it still matches, end
			if  == len()-1 {
				return true
			}

			// This element matches between the two slices, try the next one
			++
		}
	}

	return false
}

func typeAndKind( interface{}) (reflect.Type, reflect.Kind) {
	 := reflect.TypeOf()
	 := .Kind()

	if  == reflect.Ptr {
		 = .Elem()
		 = .Kind()
	}
	return , 
}

// diff returns a diff of both values as long as both are of the same type and
// are a struct, map, slice, array or string. Otherwise it returns an empty string.
func diff( interface{},  interface{}) string {
	if  == nil ||  == nil {
		return ""
	}

	,  := typeAndKind()
	,  := typeAndKind()
	if  !=  {
		return ""
	}

	if  != reflect.Struct &&  != reflect.Map &&  != reflect.Slice &&  != reflect.Array &&  != reflect.String {
		return ""
	}

	var ,  string
	 := spew.ConfigState{
		Indent:                  " ",
		DisablePointerAddresses: true,
		DisableCapacities:       true,
		SortKeys:                true,
	}
	if  != reflect.TypeOf("") {
		 = .Sdump()
		 = .Sdump()
	} else {
		 = reflect.ValueOf().String()
		 = reflect.ValueOf().String()
	}

	,  := internal.GetUnifiedDiffString(internal.UnifiedDiff{
		A:        internal.SplitLines(),
		B:        internal.SplitLines(),
		FromFile: "Expected",
		FromDate: "",
		ToFile:   "Actual",
		ToDate:   "",
		Context:  1,
	})
	return "\n\nDiff:\n" + 
}