tests/org.eclipse.e4.javascript.test/src/org/eclipse/e4/javascript/js/test/PerfVersionTest.java

package org.eclipse.e4.javascript.js.test;

import junit.framework.TestCase;
import org.eclipse.e4.javascript.JSBundle;
import org.eclipse.e4.javascript.test.Activator;
import org.mozilla.javascript.*;
import org.osgi.framework.Version;

public class PerfVersionTest extends TestCase {

	public PerfVersionTest(String name) {
		super(name);
	}

	public void testVersion() throws Exception {
		JSBundle jsBundle = Activator.getJSBundle();
		Scriptable scope = jsBundle.getScope();
		Context.enter();
		try {
			Context context = Context.getCurrentContext();
			String script = "";
			script += "assertTrue('versions not equal',new Version(0,0,0).equals(Version.EMPTY_VERSION));";
			// script += "assertEquals('versions not equal',Version.EMPTY_VERSION,new Version(0,0,0));";
			// script += "assertFalse('versions equal',new Version(1,0,0).equals(Version.EMPTY_VERSION));";
			// script += "assertNotEquals('versions equal',Version.EMPTY_VERSION,new Version(0,1,0));";
			long current = System.currentTimeMillis();
			for (int i = 0; i < 1000; i++) {
				context.evaluateString(scope, script, "script.js", 0, null);
			}
			System.out.println(System.currentTimeMillis() - current);
		} finally {
			Context.exit();
		}
	}

	public void testVersion2() throws Exception {
		JSBundle jsBundle = Activator.getJSBundle();
		Scriptable scope = jsBundle.getScope();
		Object obj = scope.get("Version", scope);
		assertNotSame(Scriptable.NOT_FOUND, obj);
		assertTrue(obj instanceof Callable);
		Function version = (Function) obj;
		Context.enter();
		try {
			long current = System.currentTimeMillis();
			for (int i = 0; i < 10000; i++) {
				Scriptable version1 = (Scriptable) version.get("EMPTY_VERSION", scope);
				Callable eq = (Callable) ScriptableObject.getProperty(version1, "equals");
				Integer ZERO = new Integer(0);
				Scriptable version2 = version.construct(Context.getCurrentContext(), scope, new Object[] {ZERO, ZERO, ZERO, null});
				assertTrue(((Boolean) eq.call(Context.getCurrentContext(), scope, version1, new Object[] {version2})).booleanValue());
			}
			System.out.println(System.currentTimeMillis() - current);
		} finally {
			Context.exit();
		}
	}

	public void testVersion3() throws Exception {

		long current = System.currentTimeMillis();
		for (int i = 0; i < 100000; i++) {
			Version version1 = Version.emptyVersion;
			Version version2 = new Version(0, 0, i + 1);
			assertFalse(version1.equals(version2));
		}
		System.out.println(System.currentTimeMillis() - current);
	}

	public void testVersion4() throws Exception {
		JSBundle jsBundle = Activator.getJSBundle();
		Scriptable scope = jsBundle.getScope();
		Context.enter();
		try {
			Context context = Context.getCurrentContext();
			String script = "";
			script += "function func(){assertTrue('versions not equal',new Version(0,0,0).equals(Version.EMPTY_VERSION));};";
			context.evaluateString(scope, script, "script.js", 0, null);
			Callable func = (Callable) ScriptableObject.getProperty(scope, "func");
			long current = System.currentTimeMillis();
			for (int i = 0; i < 10000; i++) {
				func.call(Context.getCurrentContext(), scope, scope, null);
			}
			System.out.println(System.currentTimeMillis() - current);
		} finally {
			Context.exit();
		}
	}

	public void testVersion5() throws Exception {
		JSBundle jsBundle = Activator.getJSBundle();
		Scriptable scope = jsBundle.getScope();
		Context.enter();
		try {
			Context context = Context.getCurrentContext();
			String script = "";
			script += "function func(){assertTrue('versions not equal',new Version(0,0,0).equals(Version.EMPTY_VERSION));};";
			Function func = context.compileFunction(scope, script, "script.js", 0, null);
			long current = System.currentTimeMillis();
			for (int i = 0; i < 10000; i++) {
				func.call(Context.getCurrentContext(), scope, scope, null);
			}
			System.out.println(System.currentTimeMillis() - current);
		} finally {
			Context.exit();
		}
	}

	public void testVersion6() throws Exception {
		JSBundle jsBundle = Activator.getJSBundle();
		Scriptable scope = jsBundle.getScope();
		Context.enter();
		try {
			Context context = Context.getCurrentContext();
			String script = "";
			script += "function func(){new Version(0,0,0).equals(Version.EMPTY_VERSION);};";
			Function func = context.compileFunction(scope, script, "script.js", 0, null);
			long current = System.currentTimeMillis();
			for (int i = 0; i < 10000; i++) {
				func.call(context, scope, scope, null);
			}
			System.out.println(System.currentTimeMillis() - current);
		} finally {
			Context.exit();
		}
	}

	public void testVersion7() throws Exception {
		JSBundle jsBundle = Activator.getJSBundle();
		Scriptable scope = jsBundle.getScope();
		Context.enter();
		try {
			Context context = Context.getCurrentContext();
			String script = "";
			script += "function func(){\n";
			script += "  for(var i =0; i < 10000 ; i++){\n";
			script += "    new Version(0,0,0).equals(Version.EMPTY_VERSION);\n";
			script += "  }";
			script += "}";
			Function func = context.compileFunction(scope, script, "script.js", 0, null);
			long current = System.currentTimeMillis();
			func.call(context, scope, scope, null);
			System.out.println(System.currentTimeMillis() - current);
		} finally {
			Context.exit();
		}
	}

	public void testFib() throws Exception {
		JSBundle jsBundle = Activator.getJSBundle();
		Scriptable scope = jsBundle.getScope();
		Context.enter();
		try {
			Context context = Context.getCurrentContext();
			context.setOptimizationLevel(9);
			String script = "";
			script += "function func(){\n";
			script += "  bench(50000);\n";
			script += "}";
			Function func = context.compileFunction(scope, script, "script.js", 0, null);
			long current = System.currentTimeMillis();
			func.call(context, scope, scope, null);
			System.out.println(System.currentTimeMillis() - current);
		} finally {
			Context.exit();
		}
	}

}