tests/benchmarks/corelib/io/qdir/tree/bench_qdir_tree.cpp
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     1 /****************************************************************************
       
     2 **
       
     3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
       
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    38 ** $QT_END_LICENSE$
       
    39 **
       
    40 ****************************************************************************/
       
    41 
       
    42 #include <QtTest/QTest>
       
    43 
       
    44 #include <QDirIterator>
       
    45 #include <QFile>
       
    46 #include <QString>
       
    47 #include <QStack>
       
    48 
       
    49 #include "../../../../../shared/filesystem.h"
       
    50 
       
    51 class bench_QDir_tree
       
    52     : public QObject
       
    53 {
       
    54     Q_OBJECT
       
    55 
       
    56 public:
       
    57     bench_QDir_tree()
       
    58         : prefix("./test-tree/")
       
    59     {
       
    60     }
       
    61 
       
    62 private:
       
    63     QByteArray prefix;
       
    64 
       
    65 private slots:
       
    66     void initTestCase()
       
    67     {
       
    68         QFile list(":/4.6.0-list.txt");
       
    69         QVERIFY(list.open(QIODevice::ReadOnly | QIODevice::Text));
       
    70 
       
    71         QVERIFY(fs.createDirectory(prefix));
       
    72 
       
    73         QStack<QByteArray> stack;
       
    74         QByteArray line;
       
    75         Q_FOREVER {
       
    76             char ch;
       
    77             if (!list.getChar(&ch))
       
    78                 break;
       
    79             if (ch != ' ') {
       
    80                 line.append(ch);
       
    81                 continue;
       
    82             }
       
    83 
       
    84             int pop = 1;
       
    85             if (!line.isEmpty())
       
    86                 pop = line.toInt();
       
    87 
       
    88             while (pop) {
       
    89                 stack.pop();
       
    90                 --pop;
       
    91             }
       
    92 
       
    93             line = list.readLine();
       
    94             line.chop(1);
       
    95             stack.push(line);
       
    96 
       
    97             line = prefix;
       
    98             Q_FOREACH(const QByteArray &pathElement, stack)
       
    99                 line += pathElement;
       
   100 
       
   101             if (line.endsWith('/'))
       
   102                 QVERIFY(fs.createDirectory(line));
       
   103             else
       
   104                 QVERIFY(fs.createFile(line));
       
   105 
       
   106             line.clear();
       
   107         }
       
   108     }
       
   109 
       
   110     void fileSearch_data() const
       
   111     {
       
   112         QTest::addColumn<QStringList>("nameFilters");
       
   113         QTest::addColumn<int>("filter");
       
   114         QTest::addColumn<int>("entryCount");
       
   115 
       
   116         QTest::newRow("*.cpp") << QStringList("*.cpp")
       
   117             << int(QDir::Files)
       
   118             << 3813;
       
   119 
       
   120         QTest::newRow("executables") << QStringList("*")
       
   121             << int(QDir::Executable | QDir::Files | QDir::AllDirs | QDir::NoDotAndDotDot)
       
   122             << 543;
       
   123     }
       
   124 
       
   125     void fileSearch() const
       
   126     {
       
   127         QFETCH(QStringList, nameFilters);
       
   128         QFETCH(int, filter);
       
   129         QFETCH(int, entryCount);
       
   130 
       
   131         int count = 0;
       
   132         QBENCHMARK {
       
   133             // Recursive directory iteration
       
   134             QDirIterator iterator(prefix, nameFilters, QDir::Filter(filter),
       
   135                 QDirIterator::Subdirectories | QDirIterator::FollowSymlinks);
       
   136 
       
   137             count = 0;
       
   138             while (iterator.hasNext()) {
       
   139                 iterator.next();
       
   140                 ++count;
       
   141             }
       
   142 
       
   143             QCOMPARE(count, entryCount);
       
   144         }
       
   145 
       
   146         QCOMPARE(count, entryCount);
       
   147     }
       
   148 
       
   149     void traverseDirectory() const
       
   150     {
       
   151         int count = 0;
       
   152         QBENCHMARK {
       
   153             QDirIterator iterator(prefix,
       
   154                     QDir::AllEntries | QDir::NoDotAndDotDot | QDir::Hidden | QDir::System,
       
   155                     QDirIterator::Subdirectories | QDirIterator::FollowSymlinks);
       
   156 
       
   157             while (iterator.hasNext()) {
       
   158                 iterator.next();
       
   159                 ++count;
       
   160             }
       
   161 
       
   162             QCOMPARE(count, 11963);
       
   163         }
       
   164 
       
   165         QCOMPARE(count, 11963);
       
   166     }
       
   167 
       
   168 private:
       
   169     FileSystem fs;
       
   170 };
       
   171 
       
   172 QTEST_MAIN(bench_QDir_tree)
       
   173 #include "bench_qdir_tree.moc"