package org.junit.runners.parameterized;
   
   import static java.util.Collections.unmodifiableList;
   
   import java.util.ArrayList;
   import java.util.List;
   
   import org.junit.runners.model.TestClass;
   
  /**
   * A {@code TestWithParameters} keeps the data together that are needed for
   * creating a runner for a single data set of a parameterized test. It has a
   * name, the test class and a list of parameters.
   * 
   * @since 4.12
   */
  public class TestWithParameters {
      private final String name;
  
      private final TestClass testClass;
  
      private final List<Object> parameters;
  
      public TestWithParameters(String name, TestClass testClass,
              List<Object> parameters) {
          notNull(name, "The name is missing.");
          notNull(testClass, "The test class is missing.");
          notNull(parameters, "The parameters are missing.");
          this.name = name;
          this.testClass = testClass;
          this.parameters = unmodifiableList(new ArrayList<Object>(parameters));
      }
  
      public String getName() {
          return name;
      }
  
      public TestClass getTestClass() {
          return testClass;
      }
  
      public List<Object> getParameters() {
          return parameters;
      }
  
      @Override
      public int hashCode() {
          int prime = 14747;
          int result = prime + name.hashCode();
          result = prime * result + testClass.hashCode();
          return prime * result + parameters.hashCode();
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj) {
              return true;
          }
          if (obj == null) {
              return false;
          }
          if (getClass() != obj.getClass()) {
              return false;
          }
          TestWithParameters other = (TestWithParameters) obj;
          return name.equals(other.name)
                  && parameters.equals(other.parameters)
                  && testClass.equals(other.testClass);
      }
  
      @Override
      public String toString() {
          return testClass.getName() + " '" + name + "' with parameters "
                  + parameters;
      }
  
      private static void notNull(Object value, String message) {
          if (value == null) {
              throw new NullPointerException(message);
          }
      }
  }