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//: containers/Tester.java

package containers; /* Added by Eclipse.py */

// Applies Test objects to lists of different containers.

import java.util.*;

public class Tester<C> {

public static int fieldWidth = 8;

public static TestParam[] defaultParams= TestParam.array(

10, 5000, 100, 5000, 1000, 5000, 10000, 500);

// Override this to modify pre-test initialization:

protected C initialize(int size) { return container; }

protected C container;

private String headline = "";

private List<Test<C>> tests;

private static String stringField() {

return "%" + fieldWidth + "s";

}

private static String numberField() {

return "%" + fieldWidth + "d";

}

private static int sizeWidth = 5;

private static String sizeField = "%" + sizeWidth + "s";

private TestParam[] paramList = defaultParams;

public Tester(C container, List<Test<C>> tests) {

this.container = container;

this.tests = tests;

if(container != null)

headline = container.getClass().getSimpleName();

}

public Tester(C container, List<Test<C>> tests,

TestParam[] paramList) {

this(container, tests);

this.paramList = paramList;

}

public void setHeadline(String newHeadline) {

headline = newHeadline;

}

// Generic methods for convenience :

public static <C> void run(C cntnr, List<Test<C>> tests){

new Tester<C>(cntnr, tests).timedTest();

}

public static <C> void run(C cntnr,

List<Test<C>> tests, TestParam[] paramList) {

new Tester<C>(cntnr, tests, paramList).timedTest();

}

private void displayHeader() {

// Calculate width and pad with '-':

int width = fieldWidth * tests.size() + sizeWidth;

int dashLength = width - headline.length() - 1;

StringBuilder head = new StringBuilder(width);

for(int i = 0; i < dashLength/2; i++)

head.append('-');

head.append(' ');

head.append(headline);

head.append(' ');

for(int i = 0; i < dashLength/2; i++)

head.append('-');

System.out.println(head);

// Print column headers:

System.out.format(sizeField, "size");

for(Test test : tests)

System.out.format(stringField(), test.name);

System.out.println();

}

// Run the tests for this container:

public void timedTest() {

displayHeader();

for(TestParam param : paramList) {

System.out.format(sizeField, param.size);

for(Test<C> test : tests) {

C kontainer = initialize(param.size);

long start = System.nanoTime();

// Call the overriden method:

int reps = test.test(kontainer, param);

long duration = System.nanoTime() - start;

long timePerRep = duration / reps; // Nanoseconds

System.out.format(numberField(), timePerRep);

}

System.out.println();

}

}

} ///:~