1 /*

     2  * Copyright (c) 2018, 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  */

    23 

    24 /*

    25  * @test

    26  * @summary Unit tests for Raw String Literal language changes

    27  * @library /tools/lib

    28  * @modules jdk.compiler/com.sun.tools.javac.api

    29  *          jdk.compiler/com.sun.tools.javac.main

    30  * @build toolbox.ToolBox toolbox.JavacTask

    31  * @run main RawStringLiteralLangAPI

    32  */

    33 

    34 import toolbox.JavacTask;

    35 import toolbox.JavaTask;

    36 import toolbox.Task;

    37 import toolbox.ToolBox;

    38 

    39 public class RawStringLiteralLangAPI {

    40     private static ToolBox TOOLBOX = new ToolBox();

    41 

    42     public static void main(String... args) {

    43         test1();

    44         test2();

    45         test3();

    46         test4();

    47     }

    48 

    49     /*

    50      * Check that correct/incorrect syntax is properly detected

    51      */

    52     enum Test {

    53         t0(false, "`*`*`"),

    54         t1(false, "`\\u2022`\\u2022`"),

    55         t2(false, "``*`*`"),

    56         t3(false, "``\\u2022`\\u2022`"),

    57         t4(false, "`*`*``"),

    58         t5(false, "`\\u2022`\\u2022``"),

    59         t6(true, "``*`*``"),

    60         t7(true, "``\\u2022`\\u2022``"),

    61         t8(true, "`*``*`"),

    62         t9(true, "`\\u2022``\\u2022`"),

    63         ;

    64 

    65         Test(boolean pass, String string) {

    66             this.pass = pass;

    67             this.string = string;

    68         }

    69 

    70         boolean pass;

    71         String string;

    72     }

    73     static void test1() {

    74         for (Test t : Test.values()) {

    75             String code =

    76                     "public class RawStringLiteralTest {\n" +

    77                             "    public static void main(String... args) {\n" +

    78                             "        String xxx = " + t.string + ";\n" +

    79                             "    }\n" +

    80                             "}\n";

    81             if (t.pass) {

    82                 compPass(code);

    83             } else {

    84                 compFail(code);

    85             }

    86         }

    87     }

    88 

    89     /*

    90      * Check that misuse of \u0060 is properly detected

    91      */

    92     static void test2() {

    93         compFail("public class BadDelimiter {\n" +

    94                 "    public static void main(String... args) {\n" +

    95                 "        String xxx = \\u0060`abc`;\n" +

    96                 "    }\n" +

    97                 "}\n");

    98     }

    99 

   100     /*

   101      * Check edge cases of raw string literal as last token

   102      */

   103     static void test3() {

   104         compFail("public class RawStringLiteralTest {\n" +

   105                 "    public static void main(String... args) {\n" +

   106                 "        String xxx = `abc`");

   107         compFail("public class RawStringLiteralTest {\n" +

   108                 "    public static void main(String... args) {\n" +

   109                 "        String xxx = `abc");

   110         compFail("public class RawStringLiteralTest {\n" +

   111                 "    public static void main(String... args) {\n" +

   112                 "        String xxx = `abc\u0000");

   113     }

   114 

   115     /*

   116      * Check line terminator translation

   117      */

   118     static void test4() {

   119         String[] terminators = new String[] { "\n", "\r\n", "\r" };

   120         for (String terminator : terminators) {

   121             String code = "public class LineTerminatorTest {" + terminator +

   122                           "    public static void main(String... args) {" + terminator +

   123                           "        String s =" + terminator +

   124                           "`" + terminator +

   125                           "abc" + terminator +

   126                           "`;" + terminator +

   127                           "        System.out.println(s.equals(\"\\nabc\\n\"));" + terminator +

   128                           "    }" + terminator +

   129                           "}" + terminator;

   130             new JavacTask(TOOLBOX)

   131                     .sources(code)

   132                     .classpath(".")

   133                     .options("--enable-preview", "-source", "13")

   134                     .run();

   135             String output = new JavaTask(TOOLBOX)

   136                     .vmOptions("--enable-preview")

   137                     .classpath(".")

   138                     .classArgs("LineTerminatorTest")

   139                     .run()

   140                     .writeAll()

   141                     .getOutput(Task.OutputKind.STDOUT);

   142 

   143             if (!output.contains("true")) {

   144                 throw new RuntimeException("Error detected");

   145             }

   146         }

   147     }

   148 

   149     /*

   150      * Test source for successful compile.

   151      */

   152     static void compPass(String source) {

   153         String output = new JavacTask(TOOLBOX)

   154                 .sources(source)

   155                 .classpath(".")

   156                 .options("--enable-preview", "-source", "13", "-encoding", "utf8")

   157                 .run()

   158                 .writeAll()

   159                 .getOutput(Task.OutputKind.DIRECT);

   160 

   161         if (output.contains("compiler.err")) {

   162             throw new RuntimeException("Error detected");

   163         }

   164     }

   165 

   166     /*

   167      * Test source for unsuccessful compile and specific error.

   168      */

   169     static void compFail(String source)  {

   170         String errors = new JavacTask(TOOLBOX)

   171                 .sources(source)

   172                 .classpath(".")

   173                 .options("-XDrawDiagnostics", "--enable-preview", "-source", "13", "-encoding", "utf8")

   174                 .run(Task.Expect.FAIL)

   175                 .writeAll()

   176                 .getOutput(Task.OutputKind.DIRECT);

   177 

   178         if (!errors.contains("compiler.err")) {

   179             throw new RuntimeException("No error detected");

   180         }

   181     }

   182 }