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How to use slice method of net.serenitybdd.cucumber.suiteslicing.WeightedCucumberScenarios class

Best Serenity Cucumber code snippet using net.serenitybdd.cucumber.suiteslicing.WeightedCucumberScenarios.slice

Source:CucumberSerenityRunner.java

...238            int forkCount = environmentVariables.getPropertyAsInteger(SERENITY_FORK_COUNT, 1);239            if ((batchCount == 1) && (forkCount == 1)) {240                return children;241            } else {242                LOGGER.info("Running slice {} of {} using fork {} of {} from feature paths {}", batchNumber, batchCount, forkNumber, forkCount, featurePaths);243                List<String> tagFiltersAsString =  tagFilters.stream().map(Expression::toString).collect(toList());244                WeightedCucumberScenarios weightedCucumberScenarios = new CucumberSuiteSlicer(featurePaths, TestStatistics.from(environmentVariables, featurePaths))245                        .scenarios(batchNumber, batchCount, forkNumber, forkCount, tagFiltersAsString);246                List<ParentRunner<?>> unfilteredChildren = children;247                AtomicInteger filteredInScenarioCount = new AtomicInteger();248                List<ParentRunner<?>> filteredChildren = unfilteredChildren.stream()249                        .filter(forIncludedFeatures(weightedCucumberScenarios))250                        .map(toPossibleFeatureRunner(weightedCucumberScenarios, filteredInScenarioCount))251                        .filter(Optional::isPresent)252                        .map(Optional::get)253                        .collect(toList());254                if (filteredInScenarioCount.get() != weightedCucumberScenarios.totalScenarioCount()) {255                    LOGGER.warn(256                            "There is a mismatch between the number of scenarios included in this test run ({}) and the expected number of scenarios loaded ({}). This suggests that the scenario filtering is not working correctly or feature file(s) of an unexpected structure are being run",...

Source:CucumberWithSerenity.java

...85            int forkCount = environmentVariables.getPropertyAsInteger(SERENITY_FORK_COUNT, 1);86            if ((batchCount == 1) && (forkCount == 1)) {87                return super.getChildren();88            } else {89                LOGGER.info("Running slice {} of {} using fork {} of {} from feature paths {}", batchNumber, batchCount, forkNumber, forkCount, featurePaths);90                WeightedCucumberScenarios weightedCucumberScenarios = new CucumberSuiteSlicer(featurePaths, TestStatistics.from(environmentVariables, featurePaths))91                        .scenarios(batchNumber, batchCount, forkNumber, forkCount, tagFilters);92                List<FeatureRunner> unfilteredChildren = super.getChildren();93                AtomicInteger filteredInScenarioCount = new AtomicInteger();94                List<FeatureRunner> filteredChildren = unfilteredChildren.stream()95                        .filter(forIncludedFeatures(weightedCucumberScenarios))96                        .map(toPossibleFeatureRunner(weightedCucumberScenarios, filteredInScenarioCount))97                        .filter(Optional::isPresent)98                        .map(Optional::get)99                        .collect(toList());100                if (filteredInScenarioCount.get() != weightedCucumberScenarios.totalScenarioCount()) {101                    LOGGER.warn(102                            "There is a mismatch between the number of scenarios included in this test run ({}) and the expected number of scenarios loaded ({}). This suggests that the scenario filtering is not working correctly or feature file(s) of an unexpected structure are being run",103                            filteredInScenarioCount.get(),...

Source:WeightedCucumberScenarios.java

...28    public WeightedCucumberScenarios(List<WeightedCucumberScenario> scenarios) {29        this.scenarios = scenarios;30        this.totalWeighting = scenarios.stream().map(WeightedCucumberScenario::weighting).reduce(ZERO, BigDecimal::add);31    }32    public SliceBuilder slice(int sliceNumber) {33        return new SliceBuilder(sliceNumber, this);34    }35    public List<WeightedCucumberScenarios> sliceInto(int sliceCount) {36        BigDecimal totalWeight = scenarios.stream().map(WeightedCucumberScenario::weighting).reduce(ZERO, BigDecimal::add);37        BigDecimal averageWeightPerSlice = totalWeight.divide(new BigDecimal(sliceCount), 2, RoundingMode.HALF_UP);38        LOGGER.debug("Total weighting for {} scenarios is {}, split across {} slices provides average weighting per slice of {}", scenarios.size(), totalWeight, sliceCount, averageWeightPerSlice);39        List<List<WeightedCucumberScenario>> allScenarios = IntStream.rangeClosed(1, sliceCount).mapToObj(initialiseAs -> new ArrayList<WeightedCucumberScenario>()).collect(toList());40        scenarios.stream()41            .sorted(bySlowestFirst())42            .forEach(scenario -> allScenarios.stream().min(byLowestSumOfDurationFirst()).get().add(scenario));43        return allScenarios.stream().map(WeightedCucumberScenarios::new).collect(toList());44    }45    public ScenarioFilter createFilterContainingScenariosIn(String featureName) {46        LOGGER.debug("Filtering for scenarios in feature {}", featureName);47        List<String> scenarios = this.scenarios.stream()48            .filter(scenario -> {49                boolean matches = scenario.feature.equals(featureName);50                LOGGER.debug("Scenario {} matches {} -> {}", scenario.feature, featureName, matches);51                return matches;52            })53            .map(scenario -> scenario.scenario)54            .collect(toList());55        if (scenarios.isEmpty()) {56            throw new IllegalArgumentException("Can't find feature '" + featureName + "' in this slice");57        }58        return ScenarioFilter.onScenarios(scenarios);59    }60    public WeightedCucumberScenarios filter(Predicate<WeightedCucumberScenario> predicate) {61        return new WeightedCucumberScenarios(scenarios.stream().filter(predicate).collect(toList()));62    }63    @Override64    public int hashCode() {65        return HashCodeBuilder.reflectionHashCode(this);66    }67    @Override68    public boolean equals(Object obj) {69        return reflectionEquals(this, obj);70    }...

Source:CucumberScenarioVisualiser.java

...20    }21    private String outputDirectory() {22        return environmentVariables.getProperty(SERENITY_OUTPUT_DIRECTORY, "target/site/serenity");23    }24    public static List<VisualisableCucumberScenarios> sliceIntoForks(int forkCount, List<WeightedCucumberScenarios> slices) {25        return slices.stream()26            .map(slice -> IntStream.rangeClosed(1, forkCount).mapToObj(forkNumber -> VisualisableCucumberScenarios.create(slices.indexOf(slice) + 1, forkNumber, slice.slice(forkNumber).of(forkCount)))27                .collect(toList())).flatMap(List::stream).collect(toList());28    }29    public void visualise(URI rootFolderURI, int sliceCount, int forkCount, TestStatistics testStatistics) {30        try {31            Files.createDirectories(Paths.get(outputDirectory()));32            List<WeightedCucumberScenarios> slices = new CucumberScenarioLoader(newArrayList(rootFolderURI), testStatistics).load().sliceInto(sliceCount);33            List<VisualisableCucumberScenarios> visualisedSlices = CucumberScenarioVisualiser.sliceIntoForks(forkCount, slices);34            String jsonFile = String.format("%s/%s-slice-config-%s-forks-in-each-of-%s-slices-using-%s.json", outputDirectory(), PathUtils35                .getAsFile(rootFolderURI).getPath().replaceAll("[:/]", "-"), forkCount, sliceCount, testStatistics);36            Files.write(Paths.get(jsonFile), new GsonBuilder().setPrettyPrinting().create().toJson(visualisedSlices).getBytes());37            LOGGER.info("Wrote visualisation as JSON for {} slices -> {}", visualisedSlices.size(), jsonFile);38        } catch (Exception e) {39            throw new RuntimeException("failed to visualise scenarios", e);40        }41    }42}...

Source:WeightedCucumberScenariosTest.java

...13    public void slicingMoreThinlyThanTheNumberOfScenariosShouldResultInSomeEmptySlices() {14        WeightedCucumberScenario weightedCucumberScenario = new WeightedCucumberScenario("test.feature", "featurename", "scenarioname", BigDecimal.ONE, emptySet(), 0);15        List<WeightedCucumberScenario> scenarios = Collections.singletonList(weightedCucumberScenario);16        WeightedCucumberScenarios oneScenario = new WeightedCucumberScenarios(scenarios);17        List<WeightedCucumberScenarios> weightedCucumberScenarios = oneScenario.sliceInto(100);18        assertThat(weightedCucumberScenarios, hasSize(100));19        assertThat(weightedCucumberScenarios.get(0).scenarios, hasSize(1));20        assertThat(weightedCucumberScenarios.get(0).scenarios.get(0), is(weightedCucumberScenario));21        assertThat(weightedCucumberScenarios.get(1).scenarios, hasSize(0));22        assertThat(weightedCucumberScenarios.get(99).scenarios, hasSize(0));23    }24    @Test25    public void slicingASliceIntoOneSliceOfOneShouldBeTheSameAsAllScenarios() {26        List<WeightedCucumberScenario> scenarios = Collections.singletonList(new WeightedCucumberScenario("test.feature", "featurename", "scenarioname", BigDecimal.ONE, emptySet(), 0));27        WeightedCucumberScenarios oneScenario = new WeightedCucumberScenarios(scenarios);28        WeightedCucumberScenarios fork1 = oneScenario.slice(1).of(1);29        assertThat(oneScenario, is(fork1));30    }31}...

Source:VisualisableCucumberScenarios.java

2import org.apache.commons.lang3.builder.HashCodeBuilder;3import org.apache.commons.lang3.builder.ToStringBuilder;4import static org.apache.commons.lang3.builder.EqualsBuilder.reflectionEquals;5public class VisualisableCucumberScenarios extends WeightedCucumberScenarios {6    public final Integer slice;7    public final Integer forkNumber;8    private VisualisableCucumberScenarios(Integer slice, Integer forkNumber, WeightedCucumberScenarios WeightedCucumberScenarios) {9        super(WeightedCucumberScenarios.scenarios);10        this.forkNumber = forkNumber;11        this.slice = slice;12    }13    public static VisualisableCucumberScenarios create(Integer slice, Integer forkNumber, WeightedCucumberScenarios WeightedCucumberScenarios) {14        return new VisualisableCucumberScenarios(slice, forkNumber, WeightedCucumberScenarios);15    }16    @Override17    public int hashCode() {18        return HashCodeBuilder.reflectionHashCode(this);19    }20    @Override21    public boolean equals(Object obj) {22        return reflectionEquals(this, obj);23    }24    @Override25    public String toString() {26        return ToStringBuilder.reflectionToString(this);27    }28}...

Source:CucumberSuiteSlicer.java

...13    }14    public WeightedCucumberScenarios scenarios(int batchNumber, int batchCount, int forkNumber, int forkCount, List<String> tagFilters) {15        return new CucumberScenarioLoader(featurePaths, statistics).load()16            .filter(forSuppliedTags(tagFilters))17            .slice(batchNumber).of(batchCount).slice(forkNumber).of(forkCount);18    }19    private Predicate<WeightedCucumberScenario> forSuppliedTags(List<String> tagFilters) {20        return cucumberScenario -> TagParser.parseFromTagFilters(tagFilters).evaluate(newArrayList(cucumberScenario.tags));21    }22}

Source:SliceBuilder.java

1package net.serenitybdd.cucumber.suiteslicing;2public class SliceBuilder {3    private int sliceNumber;4    private WeightedCucumberScenarios weightedCucumberScenarios;5    public SliceBuilder(int sliceNumber, WeightedCucumberScenarios weightedCucumberScenarios) {6        this.sliceNumber = sliceNumber;7        this.weightedCucumberScenarios = weightedCucumberScenarios;8    }9    public WeightedCucumberScenarios of(int sliceCount) {10        return weightedCucumberScenarios.sliceInto(sliceCount).get(sliceNumber - 1);11    }12}...

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