jdk8-mips64-public/langtools: test/tools/javac/lambda/methodReference/SamConversionComboTest.java@7873d37f5b37 (annotated)

test/tools/javac/lambda/methodReference/SamConversionComboTest.java@7873d37f5b37 (annotated)

test/tools/javac/lambda/methodReference/SamConversionComboTest.java

Mon, 21 Jan 2013 20:13:56 +0000

author: mcimadamore
date: Mon, 21 Jan 2013 20:13:56 +0000
changeset 1510: 7873d37f5b37
parent 1415: 01c9d4161882
child 2227: 998b10c43157
permissions: -rw-r--r--

8005244: Implement overload resolution as per latest spec EDR
Summary: Add support for stuck expressions and provisional applicability
Reviewed-by: jjg

 /*
  * Copyright (c) 2012, 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.
  */
 /**
  * @test
  * @bug 8003280
  * @summary Add lambda tests
  *   Test SAM conversion of method references in combinations of different contexts,
  *           lambda body types(statement/expression), boxing/unboxing etc, to verify
  *           SAM conversion being conducted successfully as expected.
  */
 import com.sun.source.util.JavacTask;
 import java.net.URI;
 import java.util.Arrays;
 import javax.tools.Diagnostic;
 import javax.tools.JavaCompiler;
 import javax.tools.JavaFileObject;
 import javax.tools.SimpleJavaFileObject;
 import javax.tools.ToolProvider;
 import javax.tools.StandardJavaFileManager;
 public class SamConversionComboTest {
     enum FInterface {
         A("A", "interface A { Integer m(int i); }"),
         B("B", "interface B { int m(Integer i); }"),
         C("C", "interface C { int m(int i) throws Exception; }");
         String interfaceType;
         String interfaceDef;
         FInterface(String interfaceType, String interfaceDef) {
             this.interfaceType = interfaceType;
             this.interfaceDef = interfaceDef;
         }
     }
     enum Context {
         ASSIGNMENT("#FType f = #MR;"),
         METHOD_CALL("void method1(#FType f) { }\n" +
                     "void method2() {\n" +
                     "    method1(#MR);\n" +
                     "}"),
         CONSTRUCTOR("X x = new X(#MR);"),
         RETURN_OF_METHOD("#FType method1() {\n" +
                          "    return #MR;\n" +
                          "}"),
         ARRAY_INITIALIZER("#FType[] oarray = {#MR};"),
         LAMBDA_BODY("#FType f = n -> ((#FType)#MR).m(n);"),
         CAST("void test() throws Exception { int n = ((#FType)#MR).m(1); }"),
         CONDITIONAL_EXPRESSION("#FType f = 2 > 1 ? #MR : null;");
         String context;
         Context(String context) {
             this.context = context;
         }
         String getContext(FInterface f, MethodReference mr) {
             return context.replace("#FType", f.interfaceType).replace("#MR", mr.mrValue);
         }
     }
     enum MethodReference {
         METHOD1("X::method1"),
         METHOD2("new X()::method2"),
         METHOD3("X::method3"),
         METHOD4("new X()::method4"),
         METHOD5("new X()::method5"),
         METHOD6("X::method6"),
         METHOD7("X::method7"),
         METHOD8("X::method8");
         String mrValue;
         MethodReference(String mr) {
             mrValue = mr;
         }
     }
     enum MethodDef {
         METHOD1("    static Integer method1(int n) {\n" +
                 "        return n + 1;\n" +
                 "    }\n", 0),
         METHOD2("    int method2(Integer n) {\n" +
                 "        return value == 0 ? n + 2 : n + value;\n" +
                 "    }\n", 1),
         METHOD3("    static int method3(int n) {\n" +
                 "        return n + 3;\n" +
                 "    }\n", 2),
         METHOD4("    Integer method4(Integer n) {\n" +
                 "        return value == 0 ? n + 4 : n + value;\n" +
                 "    }\n", 3),
         METHOD5("    Integer method5(Integer n) {\n" +
                 "        return value == 0 ? new Integer(n + 5) : new Integer(n + value);\n" +
                 "    }\n", 4),
         METHOD6("    static int method6(Integer n) throws Exception{\n" +
                 "        throw new Exception();\n" +
                 "    }\n", 5),
         METHOD7("    static int method7(String s){\n" +
                 "        return s.length();\n" +
                 "    }\n", 6),
         METHOD8("    static String method8(Integer n){\n" +
                 "        return n + \"\";\n" +
                 "    }\n", 7);
         String methodStr;
         int index;
         MethodDef(String ms, int i) {
             methodStr = ms;
             index = i;
         }
         MethodReference getMethodReference() {
             return MethodReference.values()[index];
         }
     }
     SourceFile samSourceFile = new SourceFile("FInterface.java", "#C") {
         public String toString() {
             String interfaces = "";
             for(FInterface fi : FInterface.values())
                 interfaces += fi.interfaceDef + "\n";
             return template.replace("#C", interfaces);
         }
     };
     String clientTemplate = "class Client {\n" +
                             "    #Context\n" +
                             "}\n\n" +
                             "class X {\n" +
                             "    int value = 0;\n\n" +
                             "    X() {\n" +
                             "    }\n\n" +
                             "    X(A a) {\n" +
                             "        value = a.m(9);\n" +
                             "    }\n\n" +
                             "    X(B b) {\n" +
                             "        value = b.m(9);\n" +
                             "    }\n\n" +
                             "    X(C c) {\n" +
                             "        try {\n" +
                             "            value = c.m(9);\n" +
                             "        } catch (Exception e){}\n" +
                             "    }\n\n" +
                             "#MethodDef" +
                             "}";
     SourceFile clientSourceFile = new SourceFile("Client.java", clientTemplate) {
         public String toString() {
             return template.replace("#Context", context.getContext(fInterface, methodReference)).replace("#MethodDef", methodDef.methodStr);
         }
     };
     boolean checkSamConversion() {
         if(methodDef == MethodDef.METHOD7 || methodDef == MethodDef.METHOD8)//method signature mismatch
             return false;
         if(context != Context.CONSTRUCTOR && fInterface != FInterface.C && methodDef == MethodDef.METHOD6)
         //method that throws exceptions not thrown by the interface method is a mismatch
             return false;
         if(context == Context.CONSTRUCTOR)
                return false;
         return true;
     }
     void test() throws Exception {
         System.out.println("\n====================================");
         System.out.println(fInterface + ", " +  context + ", " + methodReference);
         System.out.println(samSourceFile + "\n" + clientSourceFile);
         DiagnosticChecker dc = new DiagnosticChecker();
         JavacTask ct = (JavacTask)comp.getTask(null, fm, dc, null, null, Arrays.asList(samSourceFile, clientSourceFile));
         ct.analyze();
         if (dc.errorFound == checkSamConversion()) {
             throw new AssertionError(samSourceFile + "\n\n" + clientSourceFile);
         }
         count++;
     }
     abstract class SourceFile extends SimpleJavaFileObject {
         protected String template;
         public SourceFile(String filename, String template) {
             super(URI.create("myfo:/" + filename), JavaFileObject.Kind.SOURCE);
             this.template = template;
         }
         @Override
         public CharSequence getCharContent(boolean ignoreEncodingErrors) {
             return toString();
         }
         public abstract String toString();
     }
     static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {
         boolean errorFound = false;
         public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
             if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
                 errorFound = true;
             }
         }
     }
     FInterface fInterface;
     Context context;
     MethodDef methodDef;
     MethodReference methodReference;
     static int count = 0;
     static JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
     static StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
     SamConversionComboTest(FInterface f, Context c, MethodDef md) {
         fInterface = f;
         context = c;
         methodDef = md;
         methodReference = md.getMethodReference();
     }
     public static void main(String[] args) throws Exception {
         for(Context ct : Context.values()) {
             for (FInterface fi : FInterface.values()) {
                 for (MethodDef md: MethodDef.values()) {
                     new SamConversionComboTest(fi, ct, md).test();
                 }
             }
         }
         System.out.println("total tests: " + count);
     }
 }

Mercurial > jdk8-mips64-public > langtools / annotate

test/tools/javac/lambda/methodReference/SamConversionComboTest.java@7873d37f5b37 (annotated)

test/tools/javac/lambda/methodReference/SamConversionComboTest.java