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K6
lib
newExecutionSegment

How to use newExecutionSegment method of lib Package

Best K6 code snippet using lib.newExecutionSegment

execution_segment.go

Source:execution_segment.go

...68	}69	if to.Cmp(oneRat) > 0 {70		return nil, fmt.Errorf("segment end value shouldn't be more than 1 but was %s", to.FloatString(2))71	}72	return newExecutionSegment(from, to), nil73}74// newExecutionSegment just creates an ExecutionSegment without validating the arguments75func newExecutionSegment(from, to *big.Rat) *ExecutionSegment {76	return &ExecutionSegment{77		from:   from,78		to:     to,79		length: new(big.Rat).Sub(to, from),80	}81}82// stringToRat is a helper function that tries to convert a string to a rational83// number while allowing percentage, decimal, and fraction values.84func stringToRat(s string) (*big.Rat, error) {85	if strings.HasSuffix(s, "%") {86		num, ok := new(big.Int).SetString(strings.TrimSuffix(s, "%"), 10)87		if !ok {88			return nil, fmt.Errorf("'%s' is not a valid percentage", s)89		}90		return new(big.Rat).SetFrac(num, big.NewInt(100)), nil91	}92	rat, ok := new(big.Rat).SetString(s)93	if !ok {94		return nil, fmt.Errorf("'%s' is not a valid percentage, decimal, fraction or interval value", s)95	}96	return rat, nil97}98// NewExecutionSegmentFromString validates the supplied string value and returns99// the newly created ExecutionSegment or and error from it.100//101// We are able to parse both single percentage/float/fraction values, and actual102// (from: to] segments. For the single values, we just treat them as the103// beginning segment - thus the execution segment can be used as a shortcut for104// quickly running an arbitrarily scaled-down version of a test.105//106// The parsing logic is that values with a colon, i.e. ':', are full segments:107//  `1/2:3/4`, `0.5:0.75`, `50%:75%`, and even `2/4:75%` should be (1/2, 3/4]108// And values without a colon are the end of a first segment:109//  `20%`, `0.2`,  and `1/5` should be converted to (0, 1/5]110// empty values should probably be treated as "1", i.e. the whole execution111func NewExecutionSegmentFromString(toStr string) (result *ExecutionSegment, err error) {112	from := zeroRat113	if toStr == "" {114		toStr = "1" // an empty string means a full 0:1 execution segment115	}116	if strings.ContainsRune(toStr, ':') {117		fromToStr := strings.SplitN(toStr, ":", 2)118		toStr = fromToStr[1]119		if from, err = stringToRat(fromToStr[0]); err != nil {120			return nil, err121		}122	}123	to, err := stringToRat(toStr)124	if err != nil {125		return nil, err126	}127	return NewExecutionSegment(from, to)128}129// UnmarshalText implements the encoding.TextUnmarshaler interface, so that130// execution segments can be specified as CLI flags, environment variables, and131// JSON strings. It is a wrapper for the NewExecutionFromString() constructor.132func (es *ExecutionSegment) UnmarshalText(text []byte) (err error) {133	segment, err := NewExecutionSegmentFromString(string(text))134	if err != nil {135		return err136	}137	*es = *segment138	return nil139}140func (es *ExecutionSegment) String() string {141	if es == nil {142		return "0:1"143	}144	return es.from.RatString() + ":" + es.to.RatString()145}146// MarshalText implements the encoding.TextMarshaler interface, so is used for147// text and JSON encoding of the execution segment.148func (es *ExecutionSegment) MarshalText() ([]byte, error) {149	if es == nil {150		return nil, nil151	}152	return []byte(es.String()), nil153}154// FloatLength is a helper method for getting some more human-readable155// information about the execution segment.156func (es *ExecutionSegment) FloatLength() float64 {157	if es == nil {158		return 1.0159	}160	res, _ := es.length.Float64()161	return res162}163// Split evenly divides the execution segment into the specified number of164// equal consecutive execution sub-segments.165func (es *ExecutionSegment) Split(numParts int64) ([]*ExecutionSegment, error) {166	if numParts < 1 {167		return nil, fmt.Errorf("the number of parts should be at least 1, %d received", numParts)168	}169	from, to := zeroRat, oneRat170	if es != nil {171		from, to = es.from, es.to172	}173	increment := new(big.Rat).Sub(to, from)174	increment.Denom().Mul(increment.Denom(), big.NewInt(numParts))175	results := make([]*ExecutionSegment, numParts)176	for i := int64(0); i < numParts; i++ {177		segmentTo := new(big.Rat).Add(from, increment)178		segment, err := NewExecutionSegment(from, segmentTo)179		if err != nil {180			return nil, err181		}182		results[i] = segment183		from = segmentTo184	}185	if from.Cmp(to) != 0 {186		return nil, fmt.Errorf("expected %s and %s to be equal", from, to)187	}188	return results, nil189}190// Equal returns true only if the two execution segments have the same from and191// to values.192func (es *ExecutionSegment) Equal(other *ExecutionSegment) bool {193	if es == other {194		return true195	}196	thisFrom, otherFrom, thisTo, otherTo := zeroRat, zeroRat, oneRat, oneRat197	if es != nil {198		thisFrom, thisTo = es.from, es.to199	}200	if other != nil {201		otherFrom, otherTo = other.from, other.to202	}203	return thisFrom.Cmp(otherFrom) == 0 && thisTo.Cmp(otherTo) == 0204}205// SubSegment returns a new execution sub-segment - if a is (1/2:1] and b is206// (0:1/2], then a.SubSegment(b) will return a new segment (1/2, 3/4].207//208// The basic formula for c = a.SubSegment(b) is:209//    c.from = a.from + b.from * (a.to - a.from)210//    c.to = c.from + (b.to - b.from) * (a.to - a.from)211func (es *ExecutionSegment) SubSegment(child *ExecutionSegment) *ExecutionSegment {212	if child == nil {213		return es // 100% sub-segment is the original segment214	}215	parentFrom, parentLength := zeroRat, oneRat216	if es != nil {217		parentFrom, parentLength = es.from, es.length218	}219	resultFrom := new(big.Rat).Mul(parentLength, child.from)220	resultFrom.Add(resultFrom, parentFrom)221	resultLength := new(big.Rat).Mul(parentLength, child.length)222	return &ExecutionSegment{223		from:   resultFrom,224		length: resultLength,225		to:     new(big.Rat).Add(resultFrom, resultLength),226	}227}228// helper function for rounding (up) of rational numbers to big.Int values229func roundUp(rat *big.Rat) *big.Int {230	quo, rem := new(big.Int).QuoRem(rat.Num(), rat.Denom(), new(big.Int))231	if rem.Mul(rem, twoBigInt).Cmp(rat.Denom()) >= 0 {232		return quo.Add(quo, oneBigInt)233	}234	return quo235}236// Scale proportionally scales the supplied value, according to the execution237// segment's position and size of the work.238func (es *ExecutionSegment) Scale(value int64) int64 {239	if es == nil { // no execution segment, i.e. 100%240		return value241	}242	// Instead of the first proposal that used remainders and floor:243	//    floor( (value * from) % 1 + value * length )244	// We're using an alternative approach with rounding that (hopefully) has245	// the same properties, but it's simpler and has better precision:246	//    round( (value * from) - round(value * from) + (value * (to - from)) )?247	// which reduces to:248	//    round( (value * to) - round(value * from) )?249	toValue := big.NewRat(value, 1)250	toValue.Mul(toValue, es.to)251	fromValue := big.NewRat(value, 1)252	fromValue.Mul(fromValue, es.from)253	toValue.Sub(toValue, new(big.Rat).SetFrac(roundUp(fromValue), oneBigInt))254	return roundUp(toValue).Int64()255}256// InPlaceScaleRat scales rational numbers in-place - it changes the passed257// argument (and also returns it, to allow for chaining, like many other big.Rat258// methods).259func (es *ExecutionSegment) InPlaceScaleRat(value *big.Rat) *big.Rat {260	if es == nil { // no execution segment, i.e. 100%261		return value262	}263	return value.Mul(value, es.length)264}265// CopyScaleRat scales rational numbers without changing them - creates a new266// bit.Rat object and uses it for the calculation.267func (es *ExecutionSegment) CopyScaleRat(value *big.Rat) *big.Rat {268	if es == nil { // no execution segment, i.e. 100%269		return value270	}271	return new(big.Rat).Mul(value, es.length)272}273// ExecutionSegmentSequence represents an ordered chain of execution segments,274// where the end of one segment is the beginning of the next. It can serialized275// as a comma-separated string of rational numbers "r1,r2,r3,...,rn", which276// represents the sequence (r1, r2], (r2, r3], (r3, r4], ..., (r{n-1}, rn].277// The empty value should be treated as if there is a single (0, 1] segment.278type ExecutionSegmentSequence []*ExecutionSegment279// NewExecutionSegmentSequence validates the that the supplied execution280// segments are non-overlapping and without gaps. It will return a new execution281// segment sequence if that is true, and an error if it's not.282func NewExecutionSegmentSequence(segments ...*ExecutionSegment) (ExecutionSegmentSequence, error) {283	if len(segments) > 1 {284		to := segments[0].to285		for i, segment := range segments[1:] {286			if segment.from.Cmp(to) != 0 {287				return nil, fmt.Errorf(288					"the start value %s of segment #%d should be equal to the end value of the previous one, but it is %s",289					segment.from, i+1, to,290				)291			}292			to = segment.to293		}294	}295	return ExecutionSegmentSequence(segments), nil296}297// NewExecutionSegmentSequenceFromString parses strings of the format298// "r1,r2,r3,...,rn", which represents the sequences like (r1, r2], (r2, r3],299// (r3, r4], ..., (r{n-1}, rn].300func NewExecutionSegmentSequenceFromString(strSeq string) (ExecutionSegmentSequence, error) {301	if len(strSeq) == 0 {302		return nil, nil303	}304	points := strings.Split(strSeq, ",")305	if len(points) < 2 {306		return nil, fmt.Errorf("at least 2 points are needed for an execution segment sequence, %d given", len(points))307	}308	var start *big.Rat309	segments := make([]*ExecutionSegment, 0, len(points)-1)310	for i, point := range points {311		rat, err := stringToRat(point)312		if err != nil {313			return nil, err314		}315		if i == 0 {316			start = rat317			continue318		}319		segment, err := NewExecutionSegment(start, rat)320		if err != nil {321			return nil, err322		}323		segments = append(segments, segment)324		start = rat325	}326	return NewExecutionSegmentSequence(segments...)327}328// UnmarshalText implements the encoding.TextUnmarshaler interface, so that329// execution segment sequences can be specified as CLI flags, environment330// variables, and JSON strings.331func (ess *ExecutionSegmentSequence) UnmarshalText(text []byte) (err error) {332	seq, err := NewExecutionSegmentSequenceFromString(string(text))333	if err != nil {334		return err335	}336	*ess = seq337	return nil338}339// MarshalText implements the encoding.TextMarshaler interface, so is used for340// text and JSON encoding of the execution segment sequences.341func (ess ExecutionSegmentSequence) MarshalText() ([]byte, error) {342	return []byte(ess.String()), nil343}344// String just implements the fmt.Stringer interface, encoding the sequence of345// segments as "start1,end1,end2,end3,...,endn".346func (ess ExecutionSegmentSequence) String() string {347	result := make([]string, 0, len(ess)+1)348	for i, s := range ess {349		if i == 0 {350			result = append(result, s.from.RatString())351		}352		result = append(result, s.to.RatString())353	}354	return strings.Join(result, ",")355}356// LCD calculates the lowest common denominator of the sequence.357// https://en.wikipedia.org/wiki/Least_common_multiple#Using_the_greatest_common_divisor358func (ess ExecutionSegmentSequence) LCD() int64 {359	acc := ess[0].length.Denom().Int64()360	var n int64361	for _, seg := range ess[1:] {362		n = seg.length.Denom().Int64()363		if acc == n || acc%n == 0 { // short circuit364			continue365		}366		acc *= (n / gcd(acc, n))367	}368	return acc369}370// Greatest common divisor371// https://en.wikipedia.org/wiki/Euclidean_algorithm372func gcd(a, b int64) int64 {373	for a != b {374		if a > b {375			a -= b376		} else {377			b -= a378		}379	}380	return a381}382// IsFull returns whether the sequences is full, that is, whether it starts at 0383// and ends at 1. Use GetFilledExecutionSegmentSequence() to get a full sequence.384func (ess ExecutionSegmentSequence) IsFull() bool {385	return ess != nil && len(ess) != 0 && ess[0].from.Cmp(zeroRat) == 0 && ess[len(ess)-1].to.Cmp(oneRat) == 0386}387// FindSegmentPosition returns the index of the supplied execution segment in388// the sequence, or an error if the segment isn't present. This shouldn't be389// used on a nil or empty sequence, it's best to use this method on the result390// of GetFilledExecutionSegmentSequence().391func (ess ExecutionSegmentSequence) FindSegmentPosition(segment *ExecutionSegment) (int, error) {392	from := zeroRat393	if segment != nil {394		from = segment.from395	}396	index := sort.Search(len(ess), func(i int) bool {397		return ess[i].from.Cmp(from) >= 0398	})399	if index < 0 || index >= len(ess) || !ess[index].Equal(segment) {400		return -1, fmt.Errorf("couldn't find segment %s in sequence %s", segment, ess)401	}402	return index, nil403}404// GetFilledExecutionSegmentSequence makes sure we don't have any gaps in the405// given execution segment sequence, or a nil one. It makes sure that the whole406// 0-1 range is filled.407func GetFilledExecutionSegmentSequence(408	sequence *ExecutionSegmentSequence, fallback *ExecutionSegment,409) (result ExecutionSegmentSequence) {410	if sequence == nil || len(*sequence) == 0 {411		if fallback == nil || fallback.length.Cmp(oneRat) == 0 {412			// There is no sequence or a segment, so it means the whole test run413			// is being planned/executed. So we make sure not to have a nil414			// sequence, returning a full; "0,1" sequence instead, otherwise we415			// will need to check for nil everywhere...416			return ExecutionSegmentSequence{newExecutionSegment(zeroRat, oneRat)}417		}418		// We don't have a sequence, but we have a defined segment, so we419		// fill around it with the missing pieces for a full sequence.420		result = ExecutionSegmentSequence{fallback}421	} else {422		result = *sequence423	}424	if result[0].from.Cmp(zeroRat) != 0 {425		es := newExecutionSegment(zeroRat, result[0].from)426		result = append(ExecutionSegmentSequence{es}, result...)427	}428	if result[len(result)-1].to.Cmp(oneRat) != 0 {429		es := newExecutionSegment(result[len(result)-1].to, oneRat)430		result = append(result, es)431	}432	return result433}434// ExecutionSegmentSequenceWrapper is a caching layer on top of the execution435// segment sequence that allows us to make fast and useful calculations, after436// a somewhat slow initialization.437type ExecutionSegmentSequenceWrapper struct {438	ExecutionSegmentSequence       // a filled-out segment sequence439	lcd                      int64 // pre-calculated least common denominator440	// The striped offsets, i.e. the repeating indexes that "belong" to each441	// execution segment in the sequence.442	offsets [][]int64443}444// NewExecutionSegmentSequenceWrapper expects a filled-out execution segment445// sequence. It pre-calculates the initial caches of and returns a new446// ExecutionSegmentSequenceWrapper, but doesn't calculate the striped offsets.447func NewExecutionSegmentSequenceWrapper(ess ExecutionSegmentSequence) *ExecutionSegmentSequenceWrapper {448	if !ess.IsFull() {449		panic(fmt.Sprintf("Cannot wrap around a non-full execution segment sequence '%s'", ess))450	}451	sequenceLength := len(ess)452	offsets := make([][]int64, sequenceLength)453	lcd := ess.LCD()454	// This will contain the normalized numerator values (i.e. what they would have455	// been if all denominators were equal to the LCD), sorted in descending456	// order (i.e. biggest segments are first), with references to their actual457	// indexes in the execution segment sequence (i.e. `seq` above).458	sortedNormalizedIndexes := make([]struct {459		normNumerator int64460		originalIndex int461	}, sequenceLength)462	for i := range ess {463		normalizedNumerator := ess[i].length.Num().Int64() * (lcd / ess[i].length.Denom().Int64())464		sortedNormalizedIndexes[i].normNumerator = normalizedNumerator465		sortedNormalizedIndexes[i].originalIndex = i466		offsets[i] = make([]int64, 0, normalizedNumerator+1)467	}468	sort.SliceStable(sortedNormalizedIndexes, func(i, j int) bool {469		return sortedNormalizedIndexes[i].normNumerator > sortedNormalizedIndexes[j].normNumerator470	})471	// This is the striping algorithm. Imagine you have a number of rational472	// numbers which all add up to 1 (or less), and call them segments. If you473	// want each to get proportional amount of anything, you need to give them474	// their numerator count of elements for each denominator amount from the475	// original elements. So, for 1/3, you give 1 element for each 3 elements.476	// For 3/5 - 3 elements for each 5. If you have, for example, a sequence477	// with elements with length 3/5 and 1/3, in order to know how to distribute478	// it accurately, you need to get the LCD(lowest common denominitor). In479	// this case, between 3 and 5, the LCD is 15. Then to transform the numbers480	// to have the same, LCD equal, denominator. So 3/5 becomes 9/15 and 1/3481	// becomes 5/15. So now for each 15 elements 9 need to go to the 3/5, and 5482	// need to go to 1/3. This is what we did above in sortedNormalizedIndexes.483	//484	// We use the algorithm below to split elements between ExecutionSegments by485	// using their length as the rational number. As we would like to get486	// non-sequential elements, we try to get the maximum distance between them.487	// That is the number of elements divided by the number of elements for any488	// given segment, which concidently is the length of the segment reversed.489	// The algorithm below does the following:490	//  1. Goes through the elements from 0 to the lcd-1491	//  2. For each of element, it goes through the segments and looks if the492	//     amount of already taken elements by the given segment, multiplied by493	//     that segment's length inverted, is equal to or less to the current494	//     element index. If it is, give that element to that segment. If not,495	//     continue with the next element.496	// The code below specifically avoids using big.Rat, for performance497	// reasons, which complicates the code somewhat. As additional note, the498	// sorting of the segments from biggest to smallest helps with the fact that499	// the biggest elements will need to take the most elements, and for them it500	// will be the hardest to not get sequential elements.501	prev := make([]int64, sequenceLength)502	chosenCounts := make([]int64, sequenceLength)503	saveIndex := func(iteration int64, index int, numerator int64) {504		offsets[index] = append(offsets[index], iteration-prev[index])505		prev[index] = iteration506		if int64(len(offsets[index])) == numerator {507			offsets[index] = append(offsets[index], offsets[index][0]+lcd-iteration)508		}509	}510	for i := int64(0); i < lcd; i++ {511		for sortedIndex, chosenCount := range chosenCounts {512			num := chosenCount * lcd513			denom := sortedNormalizedIndexes[sortedIndex].normNumerator514			if i > num/denom || (i == num/denom && num%denom == 0) {515				chosenCounts[sortedIndex]++516				saveIndex(i, sortedNormalizedIndexes[sortedIndex].originalIndex, denom)517				break518			}519		}520	}521	return &ExecutionSegmentSequenceWrapper{ExecutionSegmentSequence: ess, lcd: lcd, offsets: offsets}522}523// LCD returns the (cached) least common denominator of the sequence - no need524// to calculate it again, since we did it in the constructor.525func (essw *ExecutionSegmentSequenceWrapper) LCD() int64 {526	return essw.lcd527}528// ScaleInt64 scales the provided value for the given segment.529func (essw *ExecutionSegmentSequenceWrapper) ScaleInt64(segmentIndex int, value int64) int64 {530	start := essw.offsets[segmentIndex][0]531	offsets := essw.offsets[segmentIndex][1:]532	result := (value / essw.lcd) * int64(len(offsets))533	for gi, i := 0, start; i < value%essw.lcd; gi, i = gi+1, i+offsets[gi] {534		result++535	}536	return result537}538// GetStripedOffsets returns the stripped offsets for the given segment539// the returned values are as follows in order:540// - start: the first value that is for the segment541// - offsets: a list of offsets from the previous value for the segment. This are only the offsets542//            to from the start to the next start if we chunk the elements we are going to strip543//            into lcd sized chunks544// - lcd: the LCD of the lengths of all segments in the sequence. This is also the number of545//        elements after which the algorithm starts to loop and give the same values546func (essw *ExecutionSegmentSequenceWrapper) GetStripedOffsets(segmentIndex int) (int64, []int64, int64) {547	offsets := essw.offsets[segmentIndex]548	return offsets[0], offsets[1:], essw.lcd549}550// GetTuple returns an ExecutionTuple for the specified segment index.551func (essw *ExecutionSegmentSequenceWrapper) GetTuple(segmentIndex int) *ExecutionTuple {552	return &ExecutionTuple{553		Sequence:     essw,554		Segment:      essw.ExecutionSegmentSequence[segmentIndex],555		SegmentIndex: segmentIndex,556	}557}558// GetNewExecutionSegmentSequenceFromValue uses the value provided, splits it559// between all the segments, using the striping offsets in the sequence,560// generating a new segment sequence. It then returns a new561// ExecutionSegmentSequenceWrapper, with the new sequence and segments, such562// that each new segment in the new sequence has length `Scale(value)/value`563// while keeping the order.564//565// Additionally, the position of a given segment index can be tracked (since566// empty segments are removed), so that you can reconstruct an ExecutionTuple,567// if required. If the segment with the trackedIndex is not part of the new568// sequence, or if a new sequence cannot be generated (for example, for 0569// values), an error will be returned.570func (essw *ExecutionSegmentSequenceWrapper) GetNewExecutionSegmentSequenceFromValue(value int64, trackedIndex int) (571	newSequence *ExecutionSegmentSequenceWrapper, newIndex int, err error,572) {573	if value < 1 {574		return nil, -1, fmt.Errorf("cannot generate new sequence for value %d", value)575	}576	if value%essw.lcd == 0 { // the value is perfectly divisible so we will get the same tuple577		return essw, trackedIndex, nil578	}579	newIndex = -1580	newESS := make(ExecutionSegmentSequence, 0, len(essw.ExecutionSegmentSequence)) // this can be smaller581	prev := int64(0)582	for i := range essw.ExecutionSegmentSequence {583		newValue := essw.ScaleInt64(i, value)584		if newValue == 0 {585			continue586		}587		currentES := newExecutionSegment(big.NewRat(prev, value), big.NewRat(prev+newValue, value))588		prev += newValue589		if i == trackedIndex {590			newIndex = len(newESS)591		}592		newESS = append(newESS, currentES)593	}594	if newIndex == -1 {595		return nil, -1, fmt.Errorf(596			"segment %d (%s) isn't present in the new sequence",597			trackedIndex, essw.ExecutionSegmentSequence[trackedIndex],598		)599	}600	return NewExecutionSegmentSequenceWrapper(newESS), newIndex, nil601}...

newExecutionSegment

Using AI Code Generation

1import "C"2func main() {3    C.someFunction()4}5cannot use C.someFunction() (type C.int) as type C.double in argument to fmt.Println6import "C"7func main() {8    C.someFunction()9}10cannot use C.someFunction() (type C.int) as type C.double in argument to fmt.Println11import "C"12func main() {13    C.someFunction()14}15cannot use C.someFunction() (type C.int) as type C.double in argument to fmt.Println

newExecutionSegment

Using AI Code Generation

1import (2func main() {3    fmt.Println("Hello")4    lib.NewExecutionSegment()5}6import (7func NewExecutionSegment() {8    fmt.Println("NewExecutionSegment")9}10import (11func TestNewExecutionSegment(t *testing.T) {12    NewExecutionSegment()13}

newExecutionSegment

Using AI Code Generation

1import (2func main() {3	segment := lib.NewExecutionSegment("segment1")4	segment2 := lib.NewExecutionSegment("segment2")5	segment3 := lib.NewExecutionSegment("segment3")6	segment4 := lib.NewExecutionSegment("segment4")7	segment5 := lib.NewExecutionSegment("segment5")8	segment6 := lib.NewExecutionSegment("segment6")9	segment7 := lib.NewExecutionSegment("segment7")10	segment8 := lib.NewExecutionSegment("segment8")11	segment9 := lib.NewExecutionSegment("segment9")12	segment10 := lib.NewExecutionSegment("segment10")13	segment11 := lib.NewExecutionSegment("segment11")14	segment12 := lib.NewExecutionSegment("segment12")15	segment13 := lib.NewExecutionSegment("segment13")16	segment14 := lib.NewExecutionSegment("segment14")17	segment15 := lib.NewExecutionSegment("segment15")18	segment16 := lib.NewExecutionSegment("segment16")19	segment17 := lib.NewExecutionSegment("segment17")20	segment18 := lib.NewExecutionSegment("segment18")21	segment19 := lib.NewExecutionSegment("segment19")

newExecutionSegment

Using AI Code Generation

1import (2func main() {3    seg := executionsegment.NewExecutionSegment("main")4    fmt.Println(seg)5}6import (7func main() {8    seg := executionsegment.NewExecutionSegmentFromParent("main", nil)9    fmt.Println(seg)10}11import (12func main() {13    seg := executionsegment.NewExecutionSegmentFromParent("main", nil)14    fmt.Println(seg)15}16import (17func main() {18    seg := executionsegment.NewExecutionSegmentFromParent("main", nil)19    fmt.Println(seg)20}21import (22func main() {23    seg := executionsegment.NewExecutionSegmentFromParent("main", nil)24    fmt.Println(seg)25}26import (27func main() {

newExecutionSegment

Using AI Code Generation

1import (2func main() {3    executionSegment := lib.NewExecutionSegment(1, 2)4    fmt.Println(executionSegment)5}6import (7func main() {8    executionSegment := lib.NewExecutionSegment(1, 2)9    fmt.Println(executionSegment)10}11type ExecutionSegment struct {12}13func NewExecutionSegment(from, to int) *ExecutionSegment {14    return &ExecutionSegment{from: from, to: to}15}16&{1 2}17&{1 2}18./1.go:5:2: imported and not used: "fmt"19./1.go:6:2: imported and not used: "github.com/ankitjena/go-training/executionsegment/lib"20./2.go:5:2: imported and not used: "fmt"21./2.go:6:2: imported and not used: "github.com/ankitjena/go-training/executionsegment/lib"

newExecutionSegment

Using AI Code Generation

1import (2func main() {3	segment := lib.NewExecutionSegment("1-2,4,6-9")4	fmt.Println(segment)5}6import (7type ExecutionSegment struct {8}9func NewExecutionSegment(s string) *ExecutionSegment {10	segment := &ExecutionSegment{}11	segment.parse(s)12}13func (segment *ExecutionSegment) parse(s string) {14	if !segment.validate(s) {15		panic("Invalid string")16	}17	segments := strings.Split(s, ",")18	for _, seg := range segments {19		if strings.Contains(seg, "-") {20			ranges := strings.Split(seg, "-")21			start, _ := strconv.Atoi(ranges[0])22			end, _ := strconv.Atoi(ranges[1])23		} else {24			start, _ := strconv.Atoi(seg)25			end, _ := strconv.Atoi(seg)26		}27	}28}29func (segment *ExecutionSegment) validate(s string) bool {30	re := regexp.MustCompile(`^(([0-9]+-[0-9]+)|([0-9]+))(,(([0-9]+-[0-

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.