libcore/luni/src/test/java/org/apache/harmony/luni/tests/java/io/FilePermissionTest.java

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.apache.harmony.luni.tests.java.io;

import java.io.File;
import java.io.FilePermission;
import java.security.PermissionCollection;

import junit.framework.TestCase;

public class FilePermissionTest extends TestCase {

    FilePermission readAllFiles = new FilePermission("<<ALL FILES>>", "read");

    FilePermission alsoReadAllFiles = new FilePermission("<<ALL FILES>>",
            "read");

    FilePermission allInCurrent = new FilePermission("*",
            "read, write, execute,delete");

    FilePermission readInCurrent = new FilePermission("*", "read");

    FilePermission readInFile = new FilePermission("aFile.file", "read");

    FilePermission readInSubdir = new FilePermission("-", "read");

    /**
     * @tests java.io.FilePermission#FilePermission(java.lang.String,
     *        java.lang.String)
     */
    public void test_ConstructorLjava_lang_StringLjava_lang_String() {
        assertTrue("Used to test", true);
        FilePermission constructFile = new FilePermission("test constructor",
                "write");
        assertEquals(
                "action given to the constructor did not correspond - constructor failed",
                "write", constructFile.getActions());
        assertTrue(
                "name given to the constructor did not correspond - constructor failed",
                constructFile.getName() == "test constructor");

        // Regression test for HARMONY-1050
        try {
            new FilePermission(null, "drink");
            fail("Expected IAE");
        } catch (IllegalArgumentException e) {
            // Expected
        }

        try {
            new FilePermission(null, "read");
            fail("Expected NPE");
        } catch (NullPointerException e) {
            // Expected
        }

        try {
            new FilePermission(null, null);
            fail("Expected IAE");
        } catch (IllegalArgumentException e) {
            // Expected
        }
    }

    /**
     * @tests java.io.FilePermission#getActions()
     */
    public void test_getActions() {
        assertEquals("getActions should have returned only read", "read",
                readAllFiles.getActions());
        assertEquals("getActions should have returned all actions",
                "read,write,execute,delete", allInCurrent.getActions());
    }

    /**
     * @tests java.io.FilePermission#equals(java.lang.Object)
     */
    public void test_equalsLjava_lang_Object() {
        assertTrue(
                "Should not returned false when two instance of FilePermission is equal",
                readAllFiles.equals(alsoReadAllFiles));
        assertFalse(
                "Should not returned true when two instance of FilePermission is not equal",
                readInCurrent.equals(readInFile));
    }

    /**
     * @tests java.io.FilePermission#implies(java.security.Permission)
     */
    public void test_impliesLjava_security_Permission() {
        assertFalse("Should not return true for non-subset of actions", readAllFiles
                .implies(allInCurrent));
        assertFalse("Should not return true for non-subset of files", allInCurrent
                .implies(readAllFiles));
        assertTrue("Should not return false for subset of actions", allInCurrent
                .implies(readInCurrent));
        assertTrue("Should not return false for subset of files", readAllFiles
                .implies(readInCurrent));
        assertTrue("Should not return false for subset of files and actions",
                allInCurrent.implies(readInFile));
        assertTrue("Should not return false for equal FilePermissions", readAllFiles
                .implies(alsoReadAllFiles));
        assertTrue("Should not return false for subdir self", readInSubdir.implies(readInSubdir));
        assertTrue("Should not return false for current self", readInCurrent.implies(readInCurrent));
        assertTrue("Should not return false for subdir", readInSubdir.implies(readInCurrent));

        FilePermission fp13 = new FilePermission(File.separator, "read");
        FilePermission fp14 = new FilePermission(File.separator + "*", "read");
        assertFalse("/ should not imply /*", fp13.implies(fp14));
        fp14 = new FilePermission(File.separator + "-", "read");
        assertFalse("/ should not imply /-", fp13.implies(fp14));

        FilePermission fp3 = new FilePermission("/bob/*".replace('/',
                File.separatorChar), "read,write");
        FilePermission fp4 = new FilePermission("/bob/".replace('/',
                File.separatorChar), "write");
        assertFalse("Should not return true for same dir using * and not *", fp3
                .implies(fp4));
        FilePermission fp5 = new FilePermission("/bob/file".replace('/',
                File.separatorChar), "write");
        assertTrue("Should not return false for same dir using * and file", fp3
                .implies(fp5));

        FilePermission fp6 = new FilePermission("/bob/".replace('/',
                File.separatorChar), "read,write");
        FilePermission fp7 = new FilePermission("/bob/*".replace('/',
                File.separatorChar), "write");
        assertFalse("Should not return true for same dir using not * and *", fp6
                .implies(fp7));
        assertTrue("Should not return false for same subdir", fp6.implies(fp4));

        FilePermission fp8 = new FilePermission("/".replace('/',
                File.separatorChar), "read,write");
        FilePermission fp9 = new FilePermission("/".replace('/',
                File.separatorChar), "write");
        assertTrue("Should not return false for same dir", fp8.implies(fp9));

        FilePermission fp10 = new FilePermission("/".replace('/',
                File.separatorChar), "read,write");
        FilePermission fp11 = new FilePermission("/".replace('/',
                File.separatorChar), "write");
        assertTrue("Should not return false for same dir", fp10.implies(fp11));

        FilePermission fp12 = new FilePermission("/*".replace('/',
                File.separatorChar), "read,write");
        assertFalse("Should not return true for same dir using * and dir", fp12
                .implies(fp10));

        // Regression for HARMONY-47
        char separator = File.separatorChar;
        char nonSeparator = (separator == '/') ? '\\' : '/';

        FilePermission fp1 = new FilePermission(nonSeparator + "*", "read");
        FilePermission fp2 = new FilePermission(separator + "a", "read");
        assertFalse("Assert 0: non-separator worked", fp1.implies(fp2));
        fp1 = new FilePermission(nonSeparator + "-", "read");
        assertFalse("Assert 1: non-separator worked", fp1.implies(fp2));
    }

    /**
     * @tests java.io.FilePermission#newPermissionCollection()
     */
    public void test_newPermissionCollection() {
        char s = File.separatorChar;
        FilePermission perm[] = new FilePermission[4];
        perm[0] = readAllFiles;
        perm[1] = allInCurrent;
        perm[2] = new FilePermission(s + "tmp" + s + "test" + s + "*",
                "read,write");
        perm[3] = new FilePermission(s + "tmp" + s + "test" + s
                + "collection.file", "read");

        PermissionCollection collect = perm[0].newPermissionCollection();
        for (int i = 0; i < perm.length; i++) {
            collect.add(perm[i]);
        }
        assertTrue("Should not return false for subset of files", collect
                .implies(new FilePermission("*", "write")));
        assertTrue("Should not return false for subset of name and action", collect
                .implies(new FilePermission(s + "tmp", "read")));
        assertTrue("Should not return false for non subset of file and action", collect
                .implies(readInFile));

        FilePermission fp1 = new FilePermission("/tmp/-".replace('/',
                File.separatorChar), "read");
        PermissionCollection fpc = fp1.newPermissionCollection();
        fpc.add(fp1);
        fpc.add(new FilePermission("/tmp/scratch/foo/*".replace('/',
                File.separatorChar), "write"));
        FilePermission fp2 = new FilePermission("/tmp/scratch/foo/file"
                .replace('/', File.separatorChar), "read,write");
        assertTrue("collection does not collate", fpc.implies(fp2));
    }

    /**
     * @tests java.io.FilePermission#hashCode()
     */
    public void test_hashCode() {
        assertTrue(
                "two equal filePermission instances returned different hashCode",
                readAllFiles.hashCode() == alsoReadAllFiles.hashCode());
        assertTrue(
                "two filePermission instances with same permission name returned same hashCode",
                readInCurrent.hashCode() != allInCurrent.hashCode());

    }
}