test/jdk/jdk/lambda/separate/TestHarness.java - platform/libcore - Git at Google

 /*
  * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 package separate;

 import org.testng.ITestResult;
 import org.testng.annotations.AfterMethod;

 import java.lang.reflect.InvocationTargetException;
 import java.util.Arrays;
 import java.util.HashSet;
 import java.util.stream.Collectors;

 import static separate.SourceModel.Class;
 import static separate.SourceModel.*;
 import static org.testng.Assert.*;

 public class TestHarness {

     /**
      * Creates a per-thread persistent compiler object to allow as much
      * sharing as possible, but still allows for parallel execution of tests.
      */
     protected ThreadLocal<Compiler> compilerLocal = new ThreadLocal<Compiler>(){
          protected synchronized Compiler initialValue() {
              return new Compiler();
          }
     };

     protected ThreadLocal<Boolean> verboseLocal = new ThreadLocal<Boolean>() {
          protected synchronized Boolean initialValue() {
              return Boolean.FALSE;
          }
     };

     protected boolean verbose;
     protected boolean canUseCompilerCache;
     public static final String stdMethodName = SourceModel.stdMethodName;

     private TestHarness() {
     }

     protected TestHarness(boolean verbose, boolean canUseCompilerCache) {
         this.verbose = verbose;
         this.canUseCompilerCache = canUseCompilerCache;
     }

     public void setTestVerbose() {
         verboseLocal.set(Boolean.TRUE);
     }

     @AfterMethod
     public void reset() {
         if (!this.verbose) {
             verboseLocal.set(Boolean.FALSE);
         }
     }

     public Compiler.Flags[] compilerFlags() {
         HashSet<Compiler.Flags> flags = new HashSet<>();
         if (verboseLocal.get() == Boolean.TRUE) {
             flags.add(Compiler.Flags.VERBOSE);
         }
         if (this.canUseCompilerCache) {
             flags.add(Compiler.Flags.USECACHE);
         }
         return flags.toArray(new Compiler.Flags[0]);
     }

     @AfterMethod
     public void printError(ITestResult result) {
         if (result.getStatus() == ITestResult.FAILURE) {
             String clsName = result.getTestClass().getName();
             clsName = clsName.substring(clsName.lastIndexOf(".") + 1);
             System.out.println("Test " + clsName + "." +
                                result.getName() + " FAILED");
         }
     }

     private static final ConcreteMethod stdCM = ConcreteMethod.std("-1");
     private static final AbstractMethod stdAM =
             new AbstractMethod("int", stdMethodName);

     /**
      * Returns a class which has a static method with the same name as
      * 'method', whose body creates an new instance of 'specimen' and invokes
      * 'method' upon it via an invokevirtual instruction with 'args' as
      * function call parameters.
      *
      * 'returns' is a dummy return value that need only match 'methods'
      * return type (it is only used in the dummy class when compiling IV).
      */
     private Class invokeVirtualHarness(
             Class specimen, ConcreteMethod method,
             String returns, String ... args) {
         Method cm = new ConcreteMethod(
             method.getReturnType(), method.getName(),
             "return " + returns + ";",  method.getElements());
         Class stub = new Class(specimen.getName(), cm);

         String params =
             Arrays.asList(args).stream().collect(Collectors.joining(", ")).toString();

         ConcreteMethod sm = new ConcreteMethod(
             method.getReturnType(), method.getName(),
             String.format("return (new %s()).%s(%s);",
                           specimen.getName(), method.getName(), params),
             new AccessFlag("public"), new AccessFlag("static"));

         Class iv = new Class("IV_" + specimen.getName(), sm);

         iv.addCompilationDependency(stub);
         iv.addCompilationDependency(cm);

         return iv;
     }

     /**
      * Returns a class which has a static method with the same name as
      * 'method', whose body creates an new instance of 'specimen', casts it
      * to 'iface' (including the type parameters)  and invokes
      * 'method' upon it via an invokeinterface instruction with 'args' as
      * function call parameters.
      */
     private Class invokeInterfaceHarness(Class specimen, Extends iface,
             AbstractMethod method, String ... args) {
         Interface istub = new Interface(
             iface.getType().getName(), iface.getType().getAccessFlags(),
             iface.getType().getParameters(),
             null, Arrays.asList((Method)method));
         Class cstub = new Class(specimen.getName());

         String params = Arrays.asList(args).stream().collect(Collectors.joining(", ")).toString();

         ConcreteMethod sm = new ConcreteMethod(
             "int", SourceModel.stdMethodName,
             String.format("return ((%s)(new %s())).%s(%s);", iface.toString(),
                 specimen.getName(), method.getName(), params),
             new AccessFlag("public"), new AccessFlag("static"));
         sm.suppressWarnings();

         Class ii = new Class("II_" + specimen.getName() + "_" +
             iface.getType().getName(), sm);
         ii.addCompilationDependency(istub);
         ii.addCompilationDependency(cstub);
         ii.addCompilationDependency(method);
         return ii;
     }


     /**
      * Uses 'loader' to load class 'clzz', and calls the static method
      * 'method'.  If the return value does not equal 'value' (or if an
      * exception is thrown), then a test failure is indicated.
      *
      * If 'value' is null, then no equality check is performed -- the assertion
      * fails only if an exception is thrown.
      */
     protected void assertStaticCallEquals(
             ClassLoader loader, Class clzz, String method, Object value) {
         java.lang.Class<?> cls = null;
         try {
             cls = java.lang.Class.forName(clzz.getName(), true, loader);
         } catch (ClassNotFoundException e) {}
         assertNotNull(cls);

         java.lang.reflect.Method m = null;
         try {
             m = cls.getMethod(method);
         } catch (NoSuchMethodException e) {}
         assertNotNull(m);

         try {
             Object res = m.invoke(null);
             assertNotNull(res);
             if (value != null) {
                 assertEquals(res, value);
             }
         } catch (InvocationTargetException | IllegalAccessException e) {
             fail("Unexpected exception thrown: " + e.getCause());
         }
     }

     /**
      * Creates a class which calls target::method(args) via invokevirtual,
      * compiles and loads both the new class and 'target', and then invokes
      * the method.  If the returned value does not match 'value' then a
      * test failure is indicated.
      */
     public void assertInvokeVirtualEquals(
             Object value, Class target, ConcreteMethod method,
             String returns, String ... args) {

         Compiler compiler = compilerLocal.get();
         compiler.setFlags(compilerFlags());

         Class iv = invokeVirtualHarness(target, method, returns, args);
         ClassLoader loader = compiler.compile(iv, target);

         assertStaticCallEquals(loader, iv, method.getName(), value);
         compiler.cleanup();
     }

     /**
      * Convenience method for above, which assumes stdMethodName,
      * a return type of 'int', and no arguments.
      */
     public void assertInvokeVirtualEquals(int value, Class target) {
         assertInvokeVirtualEquals(
             new Integer(value), target, stdCM, "-1");
     }

     /**
      * Creates a class which calls target::method(args) via invokeinterface
      * through 'iface', compiles and loads both it and 'target', and
      * then invokes the method.  If the returned value does not match
      * 'value' then a test failure is indicated.
      */
     public void assertInvokeInterfaceEquals(Object value, Class target,
             Extends iface, AbstractMethod method, String ... args) {

         Compiler compiler = compilerLocal.get();
         compiler.setFlags(compilerFlags());

         Class ii = invokeInterfaceHarness(target, iface, method, args);
         ClassLoader loader = compiler.compile(ii, target);

         assertStaticCallEquals(loader, ii, method.getName(), value);
         compiler.cleanup();
     }

     /**
      * Convenience method for above, which assumes stdMethodName,
      * a return type of 'int', and no arguments.
      */
     public void assertInvokeInterfaceEquals(
             int value, Class target, Interface iface) {

         Compiler compiler = compilerLocal.get();
         compiler.setFlags(compilerFlags());

         assertInvokeInterfaceEquals(
             new Integer(value), target, new Extends(iface), stdAM);

         compiler.cleanup();
     }

     /**
      * Creates a class which calls target::method(args) via invokevirtual,
      * compiles and loads both the new class and 'target', and then invokes
      * the method.  If an exception of type 'exceptionType' is not thrown,
      * then a test failure is indicated.
      */
     public void assertThrows(java.lang.Class<?> exceptionType, Class target,
             ConcreteMethod method, String returns, String ... args) {

         Compiler compiler = compilerLocal.get();
         compiler.setFlags(compilerFlags());

         Class iv = invokeVirtualHarness(target, method, returns, args);
         ClassLoader loader = compiler.compile(iv, target);

         java.lang.Class<?> cls = null;
         try {
             cls = java.lang.Class.forName(iv.getName(), true, loader);
         } catch (ClassNotFoundException e) {}
         assertNotNull(cls);

         java.lang.reflect.Method m = null;
         try {
             m = cls.getMethod(method.getName());
         } catch (NoSuchMethodException e) {}
         assertNotNull(m);

         try {
             m.invoke(null);
             fail("Exception should have been thrown");
         } catch (InvocationTargetException | IllegalAccessException e) {
             if (verboseLocal.get() == Boolean.TRUE) {
                 System.out.println(e.getCause());
             }
             assertEquals(e.getCause().getClass(), exceptionType);
         }
         compiler.cleanup();
     }

     /**
      * Convenience method for above, which assumes stdMethodName,
      * a return type of 'int', and no arguments.
      */
     public void assertThrows(java.lang.Class<?> exceptionType, Class target) {
         assertThrows(exceptionType, target, stdCM, "-1");
     }
 }
	/*
	* Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation.
	*
	* This code is distributed in the hope that it will be useful, but WITHOUT
	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package separate;

	import org.testng.ITestResult;
	import org.testng.annotations.AfterMethod;

	import java.lang.reflect.InvocationTargetException;
	import java.util.Arrays;
	import java.util.HashSet;
	import java.util.stream.Collectors;

	import static separate.SourceModel.Class;
	import static separate.SourceModel.*;
	import static org.testng.Assert.*;

	public class TestHarness {

	/**
	* Creates a per-thread persistent compiler object to allow as much
	* sharing as possible, but still allows for parallel execution of tests.
	*/
	protected ThreadLocal<Compiler> compilerLocal = new ThreadLocal<Compiler>(){
	protected synchronized Compiler initialValue() {
	return new Compiler();
	}
	};

	protected ThreadLocal<Boolean> verboseLocal = new ThreadLocal<Boolean>() {
	protected synchronized Boolean initialValue() {
	return Boolean.FALSE;
	}
	};

	protected boolean verbose;
	protected boolean canUseCompilerCache;
	public static final String stdMethodName = SourceModel.stdMethodName;

	private TestHarness() {
	}

	protected TestHarness(boolean verbose, boolean canUseCompilerCache) {
	this.verbose = verbose;
	this.canUseCompilerCache = canUseCompilerCache;
	}

	public void setTestVerbose() {
	verboseLocal.set(Boolean.TRUE);
	}

	@AfterMethod
	public void reset() {
	if (!this.verbose) {
	verboseLocal.set(Boolean.FALSE);
	}
	}

	public Compiler.Flags[] compilerFlags() {
	HashSet<Compiler.Flags> flags = new HashSet<>();
	if (verboseLocal.get() == Boolean.TRUE) {
	flags.add(Compiler.Flags.VERBOSE);
	}
	if (this.canUseCompilerCache) {
	flags.add(Compiler.Flags.USECACHE);
	}
	return flags.toArray(new Compiler.Flags[0]);
	}

	@AfterMethod
	public void printError(ITestResult result) {
	if (result.getStatus() == ITestResult.FAILURE) {
	String clsName = result.getTestClass().getName();
	clsName = clsName.substring(clsName.lastIndexOf(".") + 1);
	System.out.println("Test " + clsName + "." +
	result.getName() + " FAILED");
	}
	}

	private static final ConcreteMethod stdCM = ConcreteMethod.std("-1");
	private static final AbstractMethod stdAM =
	new AbstractMethod("int", stdMethodName);

	/**
	* Returns a class which has a static method with the same name as
	* 'method', whose body creates an new instance of 'specimen' and invokes
	* 'method' upon it via an invokevirtual instruction with 'args' as
	* function call parameters.
	*
	* 'returns' is a dummy return value that need only match 'methods'
	* return type (it is only used in the dummy class when compiling IV).
	*/
	private Class invokeVirtualHarness(
	Class specimen, ConcreteMethod method,
	String returns, String ... args) {
	Method cm = new ConcreteMethod(
	method.getReturnType(), method.getName(),
	"return " + returns + ";", method.getElements());
	Class stub = new Class(specimen.getName(), cm);

	String params =
	Arrays.asList(args).stream().collect(Collectors.joining(", ")).toString();

	ConcreteMethod sm = new ConcreteMethod(
	method.getReturnType(), method.getName(),
	String.format("return (new %s()).%s(%s);",
	specimen.getName(), method.getName(), params),
	new AccessFlag("public"), new AccessFlag("static"));

	Class iv = new Class("IV_" + specimen.getName(), sm);

	iv.addCompilationDependency(stub);
	iv.addCompilationDependency(cm);

	return iv;
	}

	/**
	* Returns a class which has a static method with the same name as
	* 'method', whose body creates an new instance of 'specimen', casts it
	* to 'iface' (including the type parameters) and invokes
	* 'method' upon it via an invokeinterface instruction with 'args' as
	* function call parameters.
	*/
	private Class invokeInterfaceHarness(Class specimen, Extends iface,
	AbstractMethod method, String ... args) {
	Interface istub = new Interface(
	iface.getType().getName(), iface.getType().getAccessFlags(),
	iface.getType().getParameters(),
	null, Arrays.asList((Method)method));
	Class cstub = new Class(specimen.getName());

	String params = Arrays.asList(args).stream().collect(Collectors.joining(", ")).toString();

	ConcreteMethod sm = new ConcreteMethod(
	"int", SourceModel.stdMethodName,
	String.format("return ((%s)(new %s())).%s(%s);", iface.toString(),
	specimen.getName(), method.getName(), params),
	new AccessFlag("public"), new AccessFlag("static"));
	sm.suppressWarnings();

	Class ii = new Class("II_" + specimen.getName() + "_" +
	iface.getType().getName(), sm);
	ii.addCompilationDependency(istub);
	ii.addCompilationDependency(cstub);
	ii.addCompilationDependency(method);
	return ii;
	}


	/**
	* Uses 'loader' to load class 'clzz', and calls the static method
	* 'method'. If the return value does not equal 'value' (or if an
	* exception is thrown), then a test failure is indicated.
	*
	* If 'value' is null, then no equality check is performed -- the assertion
	* fails only if an exception is thrown.
	*/
	protected void assertStaticCallEquals(
	ClassLoader loader, Class clzz, String method, Object value) {
	java.lang.Class<?> cls = null;
	try {
	cls = java.lang.Class.forName(clzz.getName(), true, loader);
	} catch (ClassNotFoundException e) {}
	assertNotNull(cls);

	java.lang.reflect.Method m = null;
	try {
	m = cls.getMethod(method);
	} catch (NoSuchMethodException e) {}
	assertNotNull(m);

	try {
	Object res = m.invoke(null);
	assertNotNull(res);
	if (value != null) {
	assertEquals(res, value);
	}
	} catch (InvocationTargetException \| IllegalAccessException e) {
	fail("Unexpected exception thrown: " + e.getCause());
	}
	}

	/**
	* Creates a class which calls target::method(args) via invokevirtual,
	* compiles and loads both the new class and 'target', and then invokes
	* the method. If the returned value does not match 'value' then a
	* test failure is indicated.
	*/
	public void assertInvokeVirtualEquals(
	Object value, Class target, ConcreteMethod method,
	String returns, String ... args) {

	Compiler compiler = compilerLocal.get();
	compiler.setFlags(compilerFlags());

	Class iv = invokeVirtualHarness(target, method, returns, args);
	ClassLoader loader = compiler.compile(iv, target);

	assertStaticCallEquals(loader, iv, method.getName(), value);
	compiler.cleanup();
	}

	/**
	* Convenience method for above, which assumes stdMethodName,
	* a return type of 'int', and no arguments.
	*/
	public void assertInvokeVirtualEquals(int value, Class target) {
	assertInvokeVirtualEquals(
	new Integer(value), target, stdCM, "-1");
	}

	/**
	* Creates a class which calls target::method(args) via invokeinterface
	* through 'iface', compiles and loads both it and 'target', and
	* then invokes the method. If the returned value does not match
	* 'value' then a test failure is indicated.
	*/
	public void assertInvokeInterfaceEquals(Object value, Class target,
	Extends iface, AbstractMethod method, String ... args) {

	Compiler compiler = compilerLocal.get();
	compiler.setFlags(compilerFlags());

	Class ii = invokeInterfaceHarness(target, iface, method, args);
	ClassLoader loader = compiler.compile(ii, target);

	assertStaticCallEquals(loader, ii, method.getName(), value);
	compiler.cleanup();
	}

	/**
	* Convenience method for above, which assumes stdMethodName,
	* a return type of 'int', and no arguments.
	*/
	public void assertInvokeInterfaceEquals(
	int value, Class target, Interface iface) {

	Compiler compiler = compilerLocal.get();
	compiler.setFlags(compilerFlags());

	assertInvokeInterfaceEquals(
	new Integer(value), target, new Extends(iface), stdAM);

	compiler.cleanup();
	}

	/**
	* Creates a class which calls target::method(args) via invokevirtual,
	* compiles and loads both the new class and 'target', and then invokes
	* the method. If an exception of type 'exceptionType' is not thrown,
	* then a test failure is indicated.
	*/
	public void assertThrows(java.lang.Class<?> exceptionType, Class target,
	ConcreteMethod method, String returns, String ... args) {

	Compiler compiler = compilerLocal.get();
	compiler.setFlags(compilerFlags());

	Class iv = invokeVirtualHarness(target, method, returns, args);
	ClassLoader loader = compiler.compile(iv, target);

	java.lang.Class<?> cls = null;
	try {
	cls = java.lang.Class.forName(iv.getName(), true, loader);
	} catch (ClassNotFoundException e) {}
	assertNotNull(cls);

	java.lang.reflect.Method m = null;
	try {
	m = cls.getMethod(method.getName());
	} catch (NoSuchMethodException e) {}
	assertNotNull(m);

	try {
	m.invoke(null);
	fail("Exception should have been thrown");
	} catch (InvocationTargetException \| IllegalAccessException e) {
	if (verboseLocal.get() == Boolean.TRUE) {
	System.out.println(e.getCause());
	}
	assertEquals(e.getCause().getClass(), exceptionType);
	}
	compiler.cleanup();
	}

	/**
	* Convenience method for above, which assumes stdMethodName,
	* a return type of 'int', and no arguments.
	*/
	public void assertThrows(java.lang.Class<?> exceptionType, Class target) {
	assertThrows(exceptionType, target, stdCM, "-1");
	}
	}