Discover AI-native insights at Testμ Conference‘25

How to use nilHandler method of td Package

Best Go-testdeep code snippet using td.nilHandler

equal.go

...38	ctx = ctx.ResetErrors()39	ctx.BooleanError = true40	return deepValueEqualFinal(ctx, got, expected) == nil41}42// nilHandler is called when one of got or expected is nil (but never43// both, it is caller responsibility).44func nilHandler(ctx ctxerr.Context, got, expected reflect.Value) *ctxerr.Error {45	err := ctxerr.Error{}46	if expected.IsValid() { // here: !got.IsValid()47		if expected.Type().Implements(testDeeper) {48			curOperator := dark.MustGetInterface(expected).(TestDeep)49			ctx.CurOperator = curOperator50			if curOperator.HandleInvalid() {51				return curOperator.Match(ctx, got)52			}53			if ctx.BooleanError {54				return ctxerr.BooleanError55			}56			// Special case if expected is a TestDeep operator which does57			// not handle invalid values: the operator is not called, but58			// for the user the error comes from it59		} else if ctx.BooleanError {60			return ctxerr.BooleanError61		}62		err.Expected = expected63	} else { // here: !expected.IsValid() && got.IsValid()64		switch got.Kind() {65		// Special case: got is a nil interface, so consider as equal66		// to expected nil.67		case reflect.Interface:68			if got.IsNil() {69				return nil70			}71		case reflect.Chan, reflect.Func, reflect.Map, reflect.Ptr, reflect.Slice:72			// If BeLax, it is OK: we consider typed nil is equal to (untyped) nil73			if ctx.BeLax && got.IsNil() {74				return nil75			}76		}77		if ctx.BooleanError {78			return ctxerr.BooleanError79		}80		err.Got = got81	}82	err.Message = "values differ"83	return ctx.CollectError(&err)84}85func isCustomEqual(a, b reflect.Value) (bool, bool) {86	aType, bType := a.Type(), b.Type()87	equal, ok := aType.MethodByName("Equal")88	if ok {89		ft := equal.Type90		if !ft.IsVariadic() &&91			ft.NumIn() == 2 &&92			ft.NumOut() == 1 &&93			ft.In(0).AssignableTo(ft.In(1)) &&94			ft.Out(0) == types.Bool &&95			bType.AssignableTo(ft.In(1)) {96			return true, equal.Func.Call([]reflect.Value{a, b})[0].Bool()97		}98	}99	return false, false100}101// resolveAnchor does the same as ctx.Anchors.ResolveAnchor but checks102// whether v is valid and not already a TestDeep operator first.103func resolveAnchor(ctx ctxerr.Context, v reflect.Value) (reflect.Value, bool) {104	if !v.IsValid() || v.Type().Implements(testDeeper) {105		return v, false106	}107	return ctx.Anchors.ResolveAnchor(v)108}109func deepValueEqual(ctx ctxerr.Context, got, expected reflect.Value) (err *ctxerr.Error) {110	// got must not implement testDeeper111	if got.IsValid() && got.Type().Implements(testDeeper) {112		panic(color.Bad("Found a TestDeep operator in got param, " +113			"can only use it in expected one!"))114	}115	// Try to see if a TestDeep operator is anchored in expected116	if op, ok := resolveAnchor(ctx, expected); ok {117		expected = op118	}119	if !got.IsValid() || !expected.IsValid() {120		if got.IsValid() == expected.IsValid() {121			return122		}123		return nilHandler(ctx, got, expected)124	}125	// Check if a Smuggle hook matches got type126	if handled, e := ctx.Hooks.Smuggle(&got); handled {127		if e != nil {128			// ctx.BooleanError is always false here as hooks cannot be set globally129			return ctx.CollectError(&ctxerr.Error{130				Message:  e.Error(),131				Got:      got,132				Expected: expected,133			})134		}135	}136	// Check if a Cmp hook matches got & expected types137	if handled, e := ctx.Hooks.Cmp(got, expected); handled {138		if e == nil {139			return140		}141		// ctx.BooleanError is always false here as hooks cannot be set globally142		return ctx.CollectError(&ctxerr.Error{143			Message:  e.Error(),144			Got:      got,145			Expected: expected,146		})147	}148	// Look for an Equal() method149	if ctx.UseEqual || ctx.Hooks.UseEqual(got.Type()) {150		hasEqual, isEqual := isCustomEqual(got, expected)151		if hasEqual {152			if isEqual {153				return154			}155			if ctx.BooleanError {156				return ctxerr.BooleanError157			}158			return ctx.CollectError(&ctxerr.Error{159				Message:  "got.Equal(expected) failed",160				Got:      got,161				Expected: expected,162			})163		}164	}165	if got.Type() != expected.Type() {166		if expected.Type().Implements(testDeeper) {167			curOperator := dark.MustGetInterface(expected).(TestDeep)168			// Resolve interface169			if got.Kind() == reflect.Interface {170				got = got.Elem()171				if !got.IsValid() {172					return nilHandler(ctx, got, expected)173				}174			}175			ctx.CurOperator = curOperator176			return curOperator.Match(ctx, got)177		}178		// expected is not a TestDeep operator179		if got.Type() == recvKindType || expected.Type() == recvKindType {180			if ctx.BooleanError {181				return ctxerr.BooleanError182			}183			return ctx.CollectError(&ctxerr.Error{184				Message:  "values differ",185				Got:      got,186				Expected: expected,...

nilHandler

Using AI Code Generation

1td.nilHandler()2td.nilHandler()3td.nilHandler()4td.nilHandler()5td.nilHandler()6td.nilHandler()7td.nilHandler()8td.nilHandler()9td.nilHandler()10td.nilHandler()11td.nilHandler()12td.nilHandler()13td.nilHandler()14td.nilHandler()15td.nilHandler()16td.nilHandler()17td.nilHandler()18td.nilHandler()19td.nilHandler()20td.nilHandler()21td.nilHandler()22td.nilHandler()23td.nilHandler()

nilHandler

Using AI Code Generation

1func main() {2    td.nilHandler()3}4func main() {5    td := new(test)6    td.nilHandler()7}8func main() {9    td = new(test)10    td.nilHandler()11}12func main() {13    td = new(test)14    td.nilHandler()15}16func main() {17    td = new(test)18    td.nilHandler()19}20func main() {21    td = new(test)22    td.nilHandler()23}24func main() {25    td = new(test)26    td.nilHandler()27}28func main() {29    td = new(test)30    td.nilHandler()31}32func main() {33    td = new(test)34    td.nilHandler()35}36func main() {37    td = new(test)38    td.nilHandler()39}40func main() {41    td = new(test)42    td.nilHandler()43}44func main() {45    td = new(test)46    td.nilHandler()47}48func main() {49    td = new(test)50    td.nilHandler()51}

nilHandler

Using AI Code Generation

1import "fmt"2type td struct {3}4func (t *td) nilHandler() {5    fmt.Println("Inside nilHandler")6}7func main() {8    t.nilHandler()9}

nilHandler

Using AI Code Generation

1func main() {2 td()3}4func main() {5 td(nil)6}7func main() {8 td(nil)9}

Blogs

Check out the latest blogs from LambdaTest on this topic:

How Testers Can Remain Valuable in Agile Teams

Traditional software testers must step up if they want to remain relevant in the Agile environment. Agile will most probably continue to be the leading form of the software development process in the coming years.

Why Agile Teams Have to Understand How to Analyze and Make adjustments

How do we acquire knowledge? This is one of the seemingly basic but critical questions you and your team members must ask and consider. We are experts; therefore, we understand why we study and what we should learn. However, many of us do not give enough thought to how we learn.

Putting Together a Testing Team

As part of one of my consulting efforts, I worked with a mid-sized company that was looking to move toward a more agile manner of developing software. As with any shift in work style, there is some bewilderment and, for some, considerable anxiety. People are being challenged to leave their comfort zones and embrace a continuously changing, dynamic working environment. And, dare I say it, testing may be the most ‘disturbed’ of the software roles in agile development.

Test Managers in Agile – Creating the Right Culture for Your SQA Team

I was once asked at a testing summit, “How do you manage a QA team using scrum?” After some consideration, I realized it would make a good article, so here I am. Understand that the idea behind developing software in a scrum environment is for development teams to self-organize.

A Reconsideration of Software Testing Metrics

There is just one area where each member of the software testing community has a distinct point of view! Metrics! This contentious issue sparks intense disputes, and most conversations finish with no definitive conclusion. It covers a wide range of topics: How can testing efforts be measured? What is the most effective technique to assess effectiveness? Which of the many components should be quantified? How can we measure the quality of our testing performance, among other things?

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.