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test/tools/javac/lambda/methodReference/SamConversionComboTest.java@7873d37f5b37
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
1 /*
2 * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
24 /**
25 * @test
26 * @bug 8003280
27 * @summary Add lambda tests
28 * Test SAM conversion of method references in combinations of different contexts,
29 * lambda body types(statement/expression), boxing/unboxing etc, to verify
30 * SAM conversion being conducted successfully as expected.
31 */
33 import com.sun.source.util.JavacTask;
34 import java.net.URI;
35 import java.util.Arrays;
36 import javax.tools.Diagnostic;
37 import javax.tools.JavaCompiler;
38 import javax.tools.JavaFileObject;
39 import javax.tools.SimpleJavaFileObject;
40 import javax.tools.ToolProvider;
41 import javax.tools.StandardJavaFileManager;
43 public class SamConversionComboTest {
45 enum FInterface {
46 A("A", "interface A { Integer m(int i); }"),
47 B("B", "interface B { int m(Integer i); }"),
48 C("C", "interface C { int m(int i) throws Exception; }");
50 String interfaceType;
51 String interfaceDef;
53 FInterface(String interfaceType, String interfaceDef) {
54 this.interfaceType = interfaceType;
55 this.interfaceDef = interfaceDef;
56 }
57 }
59 enum Context {
60 ASSIGNMENT("#FType f = #MR;"),
61 METHOD_CALL("void method1(#FType f) { }\n" +
62 "void method2() {\n" +
63 " method1(#MR);\n" +
64 "}"),
65 CONSTRUCTOR("X x = new X(#MR);"),
66 RETURN_OF_METHOD("#FType method1() {\n" +
67 " return #MR;\n" +
68 "}"),
69 ARRAY_INITIALIZER("#FType[] oarray = {#MR};"),
70 LAMBDA_BODY("#FType f = n -> ((#FType)#MR).m(n);"),
71 CAST("void test() throws Exception { int n = ((#FType)#MR).m(1); }"),
72 CONDITIONAL_EXPRESSION("#FType f = 2 > 1 ? #MR : null;");
74 String context;
76 Context(String context) {
77 this.context = context;
78 }
80 String getContext(FInterface f, MethodReference mr) {
81 return context.replace("#FType", f.interfaceType).replace("#MR", mr.mrValue);
82 }
83 }
85 enum MethodReference {
86 METHOD1("X::method1"),
87 METHOD2("new X()::method2"),
88 METHOD3("X::method3"),
89 METHOD4("new X()::method4"),
90 METHOD5("new X()::method5"),
91 METHOD6("X::method6"),
92 METHOD7("X::method7"),
93 METHOD8("X::method8");
95 String mrValue;
97 MethodReference(String mr) {
98 mrValue = mr;
99 }
100 }
102 enum MethodDef {
103 METHOD1(" static Integer method1(int n) {\n" +
104 " return n + 1;\n" +
105 " }\n", 0),
106 METHOD2(" int method2(Integer n) {\n" +
107 " return value == 0 ? n + 2 : n + value;\n" +
108 " }\n", 1),
109 METHOD3(" static int method3(int n) {\n" +
110 " return n + 3;\n" +
111 " }\n", 2),
112 METHOD4(" Integer method4(Integer n) {\n" +
113 " return value == 0 ? n + 4 : n + value;\n" +
114 " }\n", 3),
115 METHOD5(" Integer method5(Integer n) {\n" +
116 " return value == 0 ? new Integer(n + 5) : new Integer(n + value);\n" +
117 " }\n", 4),
118 METHOD6(" static int method6(Integer n) throws Exception{\n" +
119 " throw new Exception();\n" +
120 " }\n", 5),
121 METHOD7(" static int method7(String s){\n" +
122 " return s.length();\n" +
123 " }\n", 6),
124 METHOD8(" static String method8(Integer n){\n" +
125 " return n + \"\";\n" +
126 " }\n", 7);
128 String methodStr;
129 int index;
131 MethodDef(String ms, int i) {
132 methodStr = ms;
133 index = i;
134 }
136 MethodReference getMethodReference() {
137 return MethodReference.values()[index];
138 }
139 }
141 SourceFile samSourceFile = new SourceFile("FInterface.java", "#C") {
142 public String toString() {
143 String interfaces = "";
144 for(FInterface fi : FInterface.values())
145 interfaces += fi.interfaceDef + "\n";
146 return template.replace("#C", interfaces);
147 }
148 };
150 String clientTemplate = "class Client {\n" +
151 " #Context\n" +
152 "}\n\n" +
154 "class X {\n" +
155 " int value = 0;\n\n" +
157 " X() {\n" +
158 " }\n\n" +
160 " X(A a) {\n" +
161 " value = a.m(9);\n" +
162 " }\n\n" +
164 " X(B b) {\n" +
165 " value = b.m(9);\n" +
166 " }\n\n" +
168 " X(C c) {\n" +
169 " try {\n" +
170 " value = c.m(9);\n" +
171 " } catch (Exception e){}\n" +
172 " }\n\n" +
174 "#MethodDef" +
175 "}";
177 SourceFile clientSourceFile = new SourceFile("Client.java", clientTemplate) {
178 public String toString() {
179 return template.replace("#Context", context.getContext(fInterface, methodReference)).replace("#MethodDef", methodDef.methodStr);
180 }
181 };
183 boolean checkSamConversion() {
184 if(methodDef == MethodDef.METHOD7 || methodDef == MethodDef.METHOD8)//method signature mismatch
185 return false;
186 if(context != Context.CONSTRUCTOR && fInterface != FInterface.C && methodDef == MethodDef.METHOD6)
187 //method that throws exceptions not thrown by the interface method is a mismatch
188 return false;
189 if(context == Context.CONSTRUCTOR)
190 return false;
191 return true;
192 }
194 void test() throws Exception {
195 System.out.println("\n====================================");
196 System.out.println(fInterface + ", " + context + ", " + methodReference);
197 System.out.println(samSourceFile + "\n" + clientSourceFile);
199 DiagnosticChecker dc = new DiagnosticChecker();
200 JavacTask ct = (JavacTask)comp.getTask(null, fm, dc, null, null, Arrays.asList(samSourceFile, clientSourceFile));
201 ct.analyze();
202 if (dc.errorFound == checkSamConversion()) {
203 throw new AssertionError(samSourceFile + "\n\n" + clientSourceFile);
204 }
205 count++;
206 }
208 abstract class SourceFile extends SimpleJavaFileObject {
210 protected String template;
212 public SourceFile(String filename, String template) {
213 super(URI.create("myfo:/" + filename), JavaFileObject.Kind.SOURCE);
214 this.template = template;
215 }
217 @Override
218 public CharSequence getCharContent(boolean ignoreEncodingErrors) {
219 return toString();
220 }
222 public abstract String toString();
223 }
225 static class DiagnosticChecker implements javax.tools.DiagnosticListener<JavaFileObject> {
227 boolean errorFound = false;
229 public void report(Diagnostic<? extends JavaFileObject> diagnostic) {
230 if (diagnostic.getKind() == Diagnostic.Kind.ERROR) {
231 errorFound = true;
232 }
233 }
234 }
236 FInterface fInterface;
237 Context context;
238 MethodDef methodDef;
239 MethodReference methodReference;
240 static int count = 0;
242 static JavaCompiler comp = ToolProvider.getSystemJavaCompiler();
243 static StandardJavaFileManager fm = comp.getStandardFileManager(null, null, null);
245 SamConversionComboTest(FInterface f, Context c, MethodDef md) {
246 fInterface = f;
247 context = c;
248 methodDef = md;
249 methodReference = md.getMethodReference();
250 }
252 public static void main(String[] args) throws Exception {
253 for(Context ct : Context.values()) {
254 for (FInterface fi : FInterface.values()) {
255 for (MethodDef md: MethodDef.values()) {
256 new SamConversionComboTest(fi, ct, md).test();
257 }
258 }
259 }
260 System.out.println("total tests: " + count);
261 }
262 }
