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pickles.go
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pickles.go
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package gherkin
import (
"fmt"
"github.com/cucumber/messages-go/v10"
"strings"
)
func Pickles(gherkinDocument messages.GherkinDocument, uri string, newId func() string) []*messages.Pickle {
pickles := make([]*messages.Pickle, 0)
if gherkinDocument.Feature == nil {
return pickles
}
language := gherkinDocument.Feature.Language
pickles = compileFeature(pickles, *gherkinDocument.Feature, uri, language, newId)
return pickles
}
func compileFeature(pickles []*messages.Pickle, feature messages.GherkinDocument_Feature, uri string, language string, newId func() string) []*messages.Pickle {
featureBackgroundSteps := make([]*messages.GherkinDocument_Feature_Step, 0)
featureTags := feature.Tags
for _, child := range feature.Children {
switch t := child.Value.(type) {
case *messages.GherkinDocument_Feature_FeatureChild_Background:
featureBackgroundSteps = append(featureBackgroundSteps, t.Background.Steps...)
case *messages.GherkinDocument_Feature_FeatureChild_Rule_:
pickles = compileRule(pickles, child.GetRule(), featureTags, featureBackgroundSteps, uri, language, newId)
case *messages.GherkinDocument_Feature_FeatureChild_Scenario:
scenario := t.Scenario
if len(scenario.GetExamples()) == 0 {
pickles = compileScenario(pickles, featureBackgroundSteps, scenario, featureTags, uri, language, newId)
} else {
pickles = compileScenarioOutline(pickles, scenario, featureTags, featureBackgroundSteps, uri, language, newId)
}
default:
panic(fmt.Sprintf("unexpected %T feature child", child))
}
}
return pickles
}
func compileRule(
pickles []*messages.Pickle,
rule *messages.GherkinDocument_Feature_FeatureChild_Rule,
tags []*messages.GherkinDocument_Feature_Tag,
featureBackgroundSteps []*messages.GherkinDocument_Feature_Step,
uri string,
language string,
newId func() string,
) []*messages.Pickle {
ruleBackgroundSteps := make([]*messages.GherkinDocument_Feature_Step, 0)
ruleBackgroundSteps = append(ruleBackgroundSteps, featureBackgroundSteps...)
for _, child := range rule.Children {
switch t := child.Value.(type) {
case *messages.GherkinDocument_Feature_FeatureChild_RuleChild_Background:
ruleBackgroundSteps = append(ruleBackgroundSteps, t.Background.Steps...)
case *messages.GherkinDocument_Feature_FeatureChild_RuleChild_Scenario:
scenario := t.Scenario
if len(scenario.GetExamples()) == 0 {
pickles = compileScenario(pickles, ruleBackgroundSteps, scenario, tags, uri, language, newId)
} else {
pickles = compileScenarioOutline(pickles, scenario, tags, ruleBackgroundSteps, uri, language, newId)
}
default:
panic(fmt.Sprintf("unexpected %T feature child", child))
}
}
return pickles
}
func compileScenarioOutline(
pickles []*messages.Pickle,
scenario *messages.GherkinDocument_Feature_Scenario,
featureTags []*messages.GherkinDocument_Feature_Tag,
backgroundSteps []*messages.GherkinDocument_Feature_Step,
uri string,
language string,
newId func() string,
) []*messages.Pickle {
for _, examples := range scenario.Examples {
if examples.TableHeader == nil {
continue
}
variableCells := examples.TableHeader.Cells
for _, valuesRow := range examples.TableBody {
valueCells := valuesRow.Cells
tags := pickleTags(append(featureTags, append(scenario.Tags, examples.Tags...)...))
computedPickleSteps := make([]*messages.Pickle_PickleStep, 0)
pickleBackgroundSteps := make([]*messages.Pickle_PickleStep, 0)
if len(scenario.Steps) > 0 {
pickleBackgroundSteps = pickleSteps(backgroundSteps, newId)
}
// translate computedPickleSteps based on valuesRow
for _, step := range scenario.Steps {
text := step.Text
for i, variableCell := range variableCells {
text = strings.Replace(text, "<"+variableCell.Value+">", valueCells[i].Value, -1)
}
pickleStep := pickleStep(step, variableCells, valuesRow, newId)
computedPickleSteps = append(computedPickleSteps, pickleStep)
}
// translate pickle name
name := scenario.Name
for i, key := range variableCells {
name = strings.Replace(name, "<"+key.Value+">", valueCells[i].Value, -1)
}
if len(computedPickleSteps) > 0 {
computedPickleSteps = append(pickleBackgroundSteps, computedPickleSteps...)
}
pickles = append(pickles, &messages.Pickle{
Id: newId(),
Uri: uri,
Steps: computedPickleSteps,
Tags: tags,
Name: name,
Language: language,
AstNodeIds: []string{scenario.Id, valuesRow.Id},
})
}
}
return pickles
}
func compileScenario(
pickles []*messages.Pickle,
backgroundSteps []*messages.GherkinDocument_Feature_Step,
scenario *messages.GherkinDocument_Feature_Scenario,
featureTags []*messages.GherkinDocument_Feature_Tag,
uri string,
language string,
newId func() string,
) []*messages.Pickle {
steps := make([]*messages.Pickle_PickleStep, 0)
if len(scenario.Steps) > 0 {
pickleBackgroundSteps := pickleSteps(backgroundSteps, newId)
steps = append(pickleBackgroundSteps, pickleSteps(scenario.Steps, newId)...)
}
tags := pickleTags(append(featureTags, scenario.Tags...))
pickles = append(pickles, &messages.Pickle{
Id: newId(),
Uri: uri,
Steps: steps,
Tags: tags,
Name: scenario.Name,
Language: language,
AstNodeIds: []string{scenario.Id},
})
return pickles
}
func pickleDataTable(table *messages.GherkinDocument_Feature_Step_DataTable, variableCells []*messages.GherkinDocument_Feature_TableRow_TableCell, valueCells []*messages.GherkinDocument_Feature_TableRow_TableCell) *messages.PickleStepArgument_PickleTable {
pickleTableRows := make([]*messages.PickleStepArgument_PickleTable_PickleTableRow, len(table.Rows))
for i, row := range table.Rows {
pickleTableCells := make([]*messages.PickleStepArgument_PickleTable_PickleTableRow_PickleTableCell, len(row.Cells))
for j, cell := range row.Cells {
pickleTableCells[j] = &messages.PickleStepArgument_PickleTable_PickleTableRow_PickleTableCell{
Value: interpolate(cell.Value, variableCells, valueCells),
}
}
pickleTableRows[i] = &messages.PickleStepArgument_PickleTable_PickleTableRow{Cells: pickleTableCells}
}
return &messages.PickleStepArgument_PickleTable{Rows: pickleTableRows}
}
func pickleDocString(docString *messages.GherkinDocument_Feature_Step_DocString, variableCells []*messages.GherkinDocument_Feature_TableRow_TableCell, valueCells []*messages.GherkinDocument_Feature_TableRow_TableCell) *messages.PickleStepArgument_PickleDocString {
return &messages.PickleStepArgument_PickleDocString{
MediaType: interpolate(docString.MediaType, variableCells, valueCells),
Content: interpolate(docString.Content, variableCells, valueCells),
}
}
func pickleTags(tags []*messages.GherkinDocument_Feature_Tag) []*messages.Pickle_PickleTag {
ptags := make([]*messages.Pickle_PickleTag, len(tags))
for i, tag := range tags {
ptags[i] = &messages.Pickle_PickleTag{
Name: tag.Name,
AstNodeId: tag.Id,
}
}
return ptags
}
func pickleSteps(steps []*messages.GherkinDocument_Feature_Step, newId func() string) []*messages.Pickle_PickleStep {
pickleSteps := make([]*messages.Pickle_PickleStep, len(steps))
for i, step := range steps {
pickleStep := pickleStep(step, nil, nil, newId)
pickleSteps[i] = pickleStep
}
return pickleSteps
}
func pickleStep(
step *messages.GherkinDocument_Feature_Step,
variableCells []*messages.GherkinDocument_Feature_TableRow_TableCell,
valuesRow *messages.GherkinDocument_Feature_TableRow,
newId func() string) *messages.Pickle_PickleStep {
var valueCells []*messages.GherkinDocument_Feature_TableRow_TableCell
if valuesRow != nil {
valueCells = valuesRow.Cells
}
pickleStep := &messages.Pickle_PickleStep{
Id: newId(),
Text: interpolate(step.Text, variableCells, valueCells),
AstNodeIds: []string{step.Id},
}
if valuesRow != nil {
pickleStep.AstNodeIds = append(pickleStep.AstNodeIds, valuesRow.Id)
}
if step.GetDataTable() != nil {
pickleStep.Argument = &messages.PickleStepArgument{
Message: &messages.PickleStepArgument_DataTable{
DataTable: pickleDataTable(step.GetDataTable(), variableCells, valueCells),
},
}
}
if step.GetDocString() != nil {
pickleStep.Argument = &messages.PickleStepArgument{
Message: &messages.PickleStepArgument_DocString{
DocString: pickleDocString(step.GetDocString(), variableCells, valueCells),
},
}
}
return pickleStep
}
func interpolate(s string, variableCells []*messages.GherkinDocument_Feature_TableRow_TableCell, valueCells []*messages.GherkinDocument_Feature_TableRow_TableCell) string {
if variableCells == nil || valueCells == nil {
return s
}
for i, variableCell := range variableCells {
s = strings.Replace(s, "<"+variableCell.Value+">", valueCells[i].Value, -1)
}
return s
}