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cucumber.runtime.StepDefinitionMatch Maven / Gradle / Ivy
package cucumber.runtime;
import cucumber.api.DataTable;
import cucumber.runtime.table.TableConverter;
import cucumber.runtime.xstream.LocalizedXStreams;
import gherkin.I18n;
import gherkin.formatter.Argument;
import gherkin.formatter.model.DataTableRow;
import gherkin.formatter.model.Match;
import gherkin.formatter.model.Step;
import gherkin.util.Mapper;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.List;
import static gherkin.util.FixJava.map;
public class StepDefinitionMatch extends Match {
private final StepDefinition stepDefinition;
private final transient String featurePath;
// The official JSON gherkin format doesn't have a step attribute, so we're marking this as transient
// to prevent it from ending up in the JSON.
private final transient Step step;
private final LocalizedXStreams localizedXStreams;
public StepDefinitionMatch(List arguments, StepDefinition stepDefinition, String featurePath, Step step, LocalizedXStreams localizedXStreams) {
super(arguments, stepDefinition.getLocation(false));
this.stepDefinition = stepDefinition;
this.featurePath = featurePath;
this.step = step;
this.localizedXStreams = localizedXStreams;
}
public void runStep(I18n i18n) throws Throwable {
try {
stepDefinition.execute(i18n, transformedArgs(step, localizedXStreams.get(i18n.getLocale())));
} catch (CucumberException e) {
throw e;
} catch (Throwable t) {
throw removeFrameworkFramesAndAppendStepLocation(t, getStepLocation());
}
}
/**
* @param step the step to run
* @param xStream used to convert a string to declared stepdef arguments
* @return an Array matching the types or {@code parameterTypes}, or an array of String if {@code parameterTypes} is null
*/
private Object[] transformedArgs(Step step, LocalizedXStreams.LocalizedXStream xStream) {
int argumentCount = getArguments().size();
if (step.getRows() != null) {
argumentCount++;
} else if (step.getDocString() != null) {
argumentCount++;
}
Integer parameterCount = stepDefinition.getParameterCount();
if (parameterCount != null && argumentCount != parameterCount) {
throw arityMismatch(parameterCount);
}
List result = new ArrayList();
int n = 0;
for (Argument a : getArguments()) {
ParameterInfo parameterInfo = getParameterType(n, String.class);
Object arg = parameterInfo.convert(a.getVal(), xStream);
result.add(arg);
n++;
}
if (step.getRows() != null) {
result.add(tableArgument(step, n, xStream));
} else if (step.getDocString() != null) {
result.add(step.getDocString().getValue());
}
return result.toArray(new Object[result.size()]);
}
private ParameterInfo getParameterType(int n, Type argumentType) {
ParameterInfo parameterInfo = stepDefinition.getParameterType(n, argumentType);
if (parameterInfo == null) {
// Some backends return null because they don't know
parameterInfo = new ParameterInfo(argumentType, null, null, false, null);
}
return parameterInfo;
}
private Object tableArgument(Step step, int argIndex, LocalizedXStreams.LocalizedXStream xStream) {
ParameterInfo parameterInfo = getParameterType(argIndex, DataTable.class);
TableConverter tableConverter = new TableConverter(xStream, parameterInfo);
DataTable table = new DataTable(step.getRows(), tableConverter);
Type type = parameterInfo.getType();
return tableConverter.convert(table, type, parameterInfo.isTransposed());
}
private CucumberException arityMismatch(int parameterCount) {
List arguments = createArgumentsForErrorMessage(step);
return new CucumberException(String.format(
"Arity mismatch: Step Definition '%s' with pattern [%s] is declared with %s parameters. However, the gherkin step has %s arguments %s. \nStep: %s%s",
stepDefinition.getLocation(true),
stepDefinition.getPattern(),
parameterCount,
arguments.size(),
arguments,
step.getKeyword(),
step.getName()
));
}
private List createArgumentsForErrorMessage(Step step) {
List arguments = new ArrayList(getArguments());
if (step.getDocString() != null) {
arguments.add(new Argument(-1, "DocString:" + step.getDocString().getValue()));
}
if (step.getRows() != null) {
List> rows = map(step.getRows(), new Mapper>() {
@Override
public List map(DataTableRow row) {
return row.getCells();
}
});
arguments.add(new Argument(-1, "Table:" + rows.toString()));
}
return arguments;
}
private Throwable removeFrameworkFramesAndAppendStepLocation(Throwable error, StackTraceElement stepLocation) {
StackTraceElement[] stackTraceElements = error.getStackTrace();
if (stackTraceElements.length == 0 || stepLocation == null) {
return error;
}
int newStackTraceLength;
for (newStackTraceLength = 1; newStackTraceLength < stackTraceElements.length; ++newStackTraceLength) {
if (stepDefinition.isDefinedAt(stackTraceElements[newStackTraceLength - 1])) {
break;
}
}
StackTraceElement[] newStackTrace = new StackTraceElement[newStackTraceLength + 1];
System.arraycopy(stackTraceElements, 0, newStackTrace, 0, newStackTraceLength);
newStackTrace[newStackTraceLength] = stepLocation;
error.setStackTrace(newStackTrace);
return error;
}
public String getPattern() {
return stepDefinition.getPattern();
}
public StackTraceElement getStepLocation() {
return step.getStackTraceElement(featurePath);
}
public String getStepName() {
return step.getName();
}
}
