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Java example source code file (RetentionAnnoCombo.java)

This example Java source code file (RetentionAnnoCombo.java) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

actual, default, diagnosticcollector, exception, fail, hashmap, incorrect, map, retentionannocombo, retentiontest_, runtime, string, stringbuilder, util, val

The RetentionAnnoCombo.java Java example source code

/*
 * 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.
 */

/**
 * @test
 * @bug      8002157
 * @author   sogoel
 * @summary  Combo test for all possible combinations for Retention Values
 * @build    Helper
 * @compile  RetentionAnnoCombo.java
 * @run main RetentionAnnoCombo
 */

import java.util.HashMap;
import java.util.Map;

import javax.tools.DiagnosticCollector;
import javax.tools.JavaFileObject;
import javax.tools.Diagnostic;

/*
 * Generate all combinations for the use of @Retention on base anno or container
 * anno or both. The test passes if valid test src compile as expected and
 * and invalid test src fail as expected.
 * Repeating annotations used only on class for these generated test src.
 */

public class RetentionAnnoCombo extends Helper {
    static int errors = 0;
    static boolean exitMode = false;
    static {
        String exitOnFail = System.getenv("EXIT_ON_FAIL");
        if (exitOnFail == null || exitOnFail == ""  ) {
            exitMode = false;
        }
        else {
            if (exitOnFail.equalsIgnoreCase("YES") ||
                    exitOnFail.equalsIgnoreCase("Y") ||
                    exitOnFail.equalsIgnoreCase("TRUE") ||
                    exitOnFail.equalsIgnoreCase("T")) {
                exitMode = true;
            }
        }
    }

    public static void main(String args[]) throws Exception {
        new RetentionAnnoCombo().runTest();
    }

    public void runTest() throws Exception {

        /* 4x4 matrix for Retention values SOURCE, DEFAULT, CLASS, RUNTIME
         * i -> Retention value on ContainerAnno
         * j -> Retention value on BaseAnno
         * 1 -> retention value combo should compile
         */
        int[][] retention = { {1, 0, 0, 0},
                              {1, 1, 1, 0},
                              {1, 1, 1, 0},
                              {1, 1, 1, 1} };

        Map<Integer, String> retMap = setRetentionValMatrix();
        String contents = "";
        boolean result = false;
        int testCtr = 0;
        for (int i = 0; i < 4 ; i ++) {
            for (int j = 0; j < 4; j++ ) {
                testCtr++;
                String className = "RetentionTest_"+i+"_"+j;
                contents = getContent(className, retMap, i, j);
                if (retention[i][j] == 1) {
                    // Code generated should compile
                    result = getCompileResult(contents,className, true);
                    if (!result) {
                        error("FAIL: " +  className + " did not compile as expected!", contents);
                    }
                } else {
                    result = getCompileResult(contents,className, false);
                    if (!result) {
                        error("FAIL: " +  className + " compiled unexpectedly!", contents);
                    }
                }
                if (result) {
                    System.out.println("Test passed for className = " + className);
                }
            }
        }

        System.out.println("Total number of tests run: " + testCtr);
        System.out.println("Total number of errors: " + errors);

        if (errors > 0)
            throw new Exception(errors + " errors found");
    }

    private boolean getCompileResult(String contents, String className,
            boolean shouldCompile) throws Exception{

        DiagnosticCollector<JavaFileObject> diagnostics =
                new DiagnosticCollector<JavaFileObject>();
        boolean ok = compileCode(className, contents, diagnostics);

        String expectedErrKey = "compiler.err.invalid.repeatable" +
                                        ".annotation.retention";
        if (!shouldCompile && !ok) {
            for (Diagnostic<?> d : diagnostics.getDiagnostics()) {
                if (!((d.getKind() == Diagnostic.Kind.ERROR) &&
                    d.getCode().contains(expectedErrKey))) {
                    error("FAIL: Incorrect error given, expected = "
                            + expectedErrKey + ", Actual = " + d.getCode()
                            + " for className = " + className, contents);
                }
            }
        }

        return (shouldCompile  == ok);
    }

    private Map<Integer,String> setRetentionValMatrix() {
        HashMap<Integer,String> hm = new HashMap<>();
        hm.put(0,"SOURCE");
        hm.put(1,"DEFAULT");
        hm.put(2,"CLASS");
        hm.put(3,"RUNTIME");
        return hm;
    }

    private String getContent(String className, Map<Integer, String> retMap,
            int i, int j) {

        String retContainerVal = retMap.get(i).toString();
        String retBaseVal = retMap.get(j).toString();
        String replacedRetBaseVal = "", replacedRetCAVal = "";
        String retention = Helper.ContentVars.RETENTION.getVal();

        // @Retention is available as default for both base and container anno
        if (retContainerVal.equalsIgnoreCase("DEFAULT")
                && retBaseVal.equalsIgnoreCase("DEFAULT")) {
            replacedRetBaseVal = "";
            replacedRetCAVal = "";
        // @Retention is available as default for container anno
        } else if (retContainerVal.equalsIgnoreCase("DEFAULT")) {
            replacedRetBaseVal = retention.replace("#VAL", retBaseVal);
            replacedRetCAVal = "";
        // @Retention is available as default for base anno
        } else if (retBaseVal.equalsIgnoreCase("DEFAULT")) {
            replacedRetBaseVal = "";
            replacedRetCAVal = retention.replace("#VAL", retContainerVal);
        // @Retention is not available as default for both base and container anno
        } else {
            replacedRetBaseVal = retention.replace("#VAL", retBaseVal);
            replacedRetCAVal = retention.replace("#VAL", retContainerVal);
        }

        StringBuilder annoData = new StringBuilder();
        annoData.append(Helper.ContentVars.IMPORTCONTAINERSTMTS.getVal())
                .append(Helper.ContentVars.IMPORTRETENTION.getVal())
                .append(replacedRetCAVal)
                .append(Helper.ContentVars.CONTAINER.getVal())
                .append(Helper.ContentVars.REPEATABLE.getVal())
                .append(replacedRetBaseVal)
                .append(Helper.ContentVars.BASE.getVal());

        String contents = annoData
                          + Helper.ContentVars.REPEATABLEANNO.getVal()
                          + "\nclass "+ className + "{}";
        return contents;
    }

    private void error(String msg,String... contents) throws Exception {
        System.out.println("error: " + msg);
        errors++;
        if (contents.length == 1) {
            System.out.println("Contents = " + contents[0]);
        }
        // Test exits as soon as it gets a failure
        if (exitMode) throw new Exception();
    }
}

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