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Automated combinatorial testing framework on top of JUnit

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package com.github.dakusui.jcunit8.factorspace;

import com.github.dakusui.jcunit.core.tuples.Tuple;
import com.github.dakusui.jcunit8.core.StreamableTupleCartesianator;

import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.stream.Stream;

import static java.lang.String.format;

public interface FactorSpace {
  static FactorSpace create(List factors, List constraints) {
    List work = new ArrayList<>(constraints);
    return new FactorSpace() {
      Map factorMap = new LinkedHashMap() {{
        factors.forEach(each -> put(each.getName(), each));
      }};

      @SuppressWarnings("unchecked")
      @Override
      public List getFactors() {
        return (List) factors;
      }

      @Override
      public Factor getFactor(String name) {
        return factorMap.get(name);
      }

      @Override
      public List getConstraints() {
        return work;
      }

      @Override
      public String toString() {
        return format("factors:%s,constraints:%s", factors, constraints);
      }
    };
  }

  List getConstraints();

  List getFactors();

  Factor getFactor(String name);

  default Stream stream() {
    return new StreamableTupleCartesianator(getFactors()).stream();
  }

  default List getFactorNames() {
    return FactorUtils.toFactorNames(this.getFactors());
  }
}