Add unit tests for a number of QList methods.

Granted, if this breaks, it will be noticed quickly - but it is desirable to
catch such problems at test time rather than in production.

Merge-request: 575
Reviewed-by: Benjamin Poulain <benjamin.poulain@nokia.com>

1 files changed, 489 insertions, 0 deletions

diff --git a/tests/auto/qlist/tst_qlist.cpp b/tests/auto/qlist/tst_qlist.cpp
index e2944cc..ba8aefa 100644
--- a/tests/auto/qlist/tst_qlist.cpp
+++ b/tests/auto/qlist/tst_qlist.cpp
@@ -62,6 +62,33 @@ private slots:
     void append() const;
     void prepend() const;
     void mid() const;
+    void at() const;
+    void first() const;
+    void last() const;
+    void begin() const;
+    void end() const;
+    void contains() const;
+    void count() const;
+    void empty() const;
+    void endsWith() const;
+    void lastIndexOf() const;
+    void move() const;
+    void removeAll() const;
+    void removeAt() const;
+    void removeOne() const;
+    void replace() const;
+    void startsWith() const;
+    void swap() const;
+    void takeAt() const;
+    void takeFirst() const;
+    void takeLast() const;
+    void toSet() const;
+    void toStdList() const;
+    void toVector() const;
+    void value() const;
+
+    void testSTLIterators() const;
+    void testOperators() const;
 };
 
 void tst_QList::length() const
@@ -173,5 +200,467 @@ void tst_QList::mid() const
              QList<QString>() << "bak" << "buck" << "hello");
 }
 
+void tst_QList::at() const
+{
+    // test at() and make sure it functions correctly with some simple list manipulation.
+    QList<QString> list;
+
+    // create a list
+    list << "foo" << "bar" << "baz";
+    QVERIFY(list.size() == 3);
+    QCOMPARE(list.at(0), QLatin1String("foo"));
+    QCOMPARE(list.at(1), QLatin1String("bar"));
+    QCOMPARE(list.at(2), QLatin1String("baz"));
+
+    // append an item
+    list << "hello";
+    QVERIFY(list.size() == 4);
+    QCOMPARE(list.at(0), QLatin1String("foo"));
+    QCOMPARE(list.at(1), QLatin1String("bar"));
+    QCOMPARE(list.at(2), QLatin1String("baz"));
+    QCOMPARE(list.at(3), QLatin1String("hello"));
+
+    // remove an item
+    list.removeAt(1);
+    QVERIFY(list.size() == 3);
+    QCOMPARE(list.at(0), QLatin1String("foo"));
+    QCOMPARE(list.at(1), QLatin1String("baz"));
+    QCOMPARE(list.at(2), QLatin1String("hello"));
+}
+
+void tst_QList::first() const
+{
+    QList<QString> list;
+    list << "foo" << "bar";
+
+    QCOMPARE(list.first(), QLatin1String("foo"));
+
+    // remove an item, make sure it still works
+    list.pop_front();
+    QVERIFY(list.size() == 1);
+    QCOMPARE(list.first(), QLatin1String("bar"));
+}
+
+void tst_QList::last() const
+{
+    QList<QString> list;
+    list << "foo" << "bar";
+
+    QCOMPARE(list.last(), QLatin1String("bar"));
+
+    // remove an item, make sure it still works
+    list.pop_back();
+    QVERIFY(list.size() == 1);
+    QCOMPARE(list.last(), QLatin1String("foo"));
+}
+
+void tst_QList::begin() const
+{
+    QList<QString> list;
+    list << "foo" << "bar";
+
+    QCOMPARE(*list.begin(), QLatin1String("foo"));
+
+    // remove an item, make sure it still works
+    list.pop_front();
+    QVERIFY(list.size() == 1);
+    QCOMPARE(*list.begin(), QLatin1String("bar"));
+}
+
+void tst_QList::end() const
+{
+    QList<QString> list;
+    list << "foo" << "bar";
+
+    QCOMPARE(*--list.end(), QLatin1String("bar"));
+
+    // remove an item, make sure it still works
+    list.pop_back();
+    QVERIFY(list.size() == 1);
+    QCOMPARE(*--list.end(), QLatin1String("foo"));
+}
+
+void tst_QList::contains() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    QVERIFY(list.contains(QLatin1String("foo")) == true);
+    QVERIFY(list.contains(QLatin1String("pirates")) != true);
+
+    // add it and make sure it matches
+    list.append(QLatin1String("ninjas"));
+    QVERIFY(list.contains(QLatin1String("ninjas")) == true);
+}
+
+void tst_QList::count() const
+{
+    QList<QString> list;
+
+    // starts empty
+    QVERIFY(list.count() == 0);
+
+    // goes up
+    list.append(QLatin1String("foo"));
+    QVERIFY(list.count() == 1);
+
+    // and up
+    list.append(QLatin1String("bar"));
+    QVERIFY(list.count() == 2);
+
+    // and down
+    list.pop_back();
+    QVERIFY(list.count() == 1);
+
+    // and empty. :)
+    list.pop_back();
+    QVERIFY(list.count() == 0);
+}
+
+void tst_QList::empty() const
+{
+    QList<QString> list;
+
+    // make sure it starts empty
+    QVERIFY(list.empty());
+
+    // and doesn't stay empty
+    list.append(QLatin1String("foo"));
+    QVERIFY(!list.empty());
+
+    // and goes back to being empty
+    list.pop_back();
+    QVERIFY(list.empty());
+}
+
+void tst_QList::endsWith() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    // test it returns correctly in both cases
+    QVERIFY(list.endsWith(QLatin1String("baz")));
+    QVERIFY(!list.endsWith(QLatin1String("bar")));
+
+    // remove an item and make sure the end item changes
+    list.pop_back();
+    QVERIFY(list.endsWith(QLatin1String("bar")));
+}
+
+void tst_QList::lastIndexOf() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    // one instance of the target item
+    QVERIFY(list.lastIndexOf(QLatin1String("baz")) == 2);
+
+    // shouldn't find this
+    QVERIFY(list.lastIndexOf(QLatin1String("shouldntfindme")) == -1);
+
+    // multiple instances
+    list.append("baz");
+    list.append("baz");
+    QVERIFY(list.lastIndexOf(QLatin1String("baz")) == 4);
+
+    // search from the middle to find the last one
+    QVERIFY(list.lastIndexOf(QLatin1String("baz"), 3) == 3);
+
+    // try find none
+    QVERIFY(list.lastIndexOf(QLatin1String("baz"), 1) == -1);
+}
+
+void tst_QList::move() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    // move an item
+    list.move(0, list.count() - 1);
+    QCOMPARE(list, QList<QString>() << "bar" << "baz" << "foo");
+
+    // move it back
+    list.move(list.count() - 1, 0);
+    QCOMPARE(list, QList<QString>() << "foo" << "bar" << "baz");
+
+    // move an item in the middle
+    list.move(1, 0);
+    QCOMPARE(list, QList<QString>() << "bar" << "foo" << "baz");
+}
+
+void tst_QList::removeAll() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    // remove one instance
+    list.removeAll(QLatin1String("bar"));
+    QCOMPARE(list, QList<QString>() << "foo" << "baz");
+
+    // many instances
+    list << "foo" << "bar" << "baz";
+    list << "foo" << "bar" << "baz";
+    list << "foo" << "bar" << "baz";
+    list.removeAll(QLatin1String("bar"));
+    QCOMPARE(list, QList<QString>() << "foo" << "baz" << "foo" << "baz" << "foo" << "baz" << "foo" << "baz");
+
+    // try remove something that doesn't exist
+    list.removeAll(QLatin1String("you won't remove anything I hope"));
+    QCOMPARE(list, QList<QString>() << "foo" << "baz" << "foo" << "baz" << "foo" << "baz" << "foo" << "baz");
+}
+
+void tst_QList::removeAt() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    // middle
+    list.removeAt(1);
+    QCOMPARE(list, QList<QString>() << "foo" << "baz");
+
+    // start
+    list.removeAt(0);
+    QCOMPARE(list, QList<QString>() << "baz");
+
+    // final
+    list.removeAt(0);
+    QCOMPARE(list, QList<QString>());
+}
+
+void tst_QList::removeOne() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    // middle
+    list.removeOne(QLatin1String("bar"));
+    QCOMPARE(list, QList<QString>() << "foo" << "baz");
+
+    // start
+    list.removeOne(QLatin1String("foo"));
+    QCOMPARE(list, QList<QString>() << "baz");
+
+    // last
+    list.removeOne(QLatin1String("baz"));
+    QCOMPARE(list, QList<QString>());
+
+    // make sure it really only removes one :)
+    list << "foo" << "foo";
+    list.removeOne("foo");
+    QCOMPARE(list, QList<QString>() << "foo");
+
+    // try remove something that doesn't exist
+    list.removeOne(QLatin1String("you won't remove anything I hope"));
+    QCOMPARE(list, QList<QString>() << "foo");
+}
+
+void tst_QList::replace() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    // start
+    list.replace(0, "moo");
+    QCOMPARE(list, QList<QString>() << "moo" << "bar" << "baz");
+
+    // middle
+    list.replace(1, "cow");
+    QCOMPARE(list, QList<QString>() << "moo" << "cow" << "baz");
+
+    // end
+    list.replace(2, "milk");
+    QCOMPARE(list, QList<QString>() << "moo" << "cow" << "milk");
+}
+
+void tst_QList::startsWith() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    // make sure it starts ok
+    QVERIFY(list.startsWith(QLatin1String("foo")));
+
+    // remove an item
+    list.removeFirst();
+    QVERIFY(list.startsWith(QLatin1String("bar")));
+}
+
+void tst_QList::swap() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    // swap
+    list.swap(0, 2);
+    QCOMPARE(list, QList<QString>() << "baz" << "bar" << "foo");
+
+    // swap again
+    list.swap(1, 2);
+    QCOMPARE(list, QList<QString>() << "baz" << "foo" << "bar");
+}
+
+void tst_QList::takeAt() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    QCOMPARE(list.takeAt(0), QLatin1String("foo"));
+    QVERIFY(list.size() == 2);
+    QCOMPARE(list.takeAt(1), QLatin1String("baz"));
+    QVERIFY(list.size() == 1);
+    QCOMPARE(list.takeAt(0), QLatin1String("bar"));
+    QVERIFY(list.size() == 0);
+}
+
+void tst_QList::takeFirst() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    QCOMPARE(list.takeFirst(), QLatin1String("foo"));
+    QVERIFY(list.size() == 2);
+    QCOMPARE(list.takeFirst(), QLatin1String("bar"));
+    QVERIFY(list.size() == 1);
+    QCOMPARE(list.takeFirst(), QLatin1String("baz"));
+    QVERIFY(list.size() == 0);
+}
+
+void tst_QList::takeLast() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    QCOMPARE(list.takeLast(), QLatin1String("baz"));
+    QCOMPARE(list.takeLast(), QLatin1String("bar"));
+    QCOMPARE(list.takeLast(), QLatin1String("foo"));
+}
+
+void tst_QList::toSet() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    // no duplicates
+    QCOMPARE(list.toSet(), QSet<QString>() << "foo" << "bar" << "baz");
+    QCOMPARE(list, QList<QString>() << "foo" << "bar" << "baz");
+
+    // duplicates (is this more of a QSet test?)
+    list << "foo" << "bar" << "baz";
+    QCOMPARE(list.toSet(), QSet<QString>() << "foo" << "bar" << "baz");
+    QCOMPARE(list, QList<QString>() << "foo" << "bar" << "baz" << "foo" << "bar" << "baz");
+}
+
+void tst_QList::toStdList() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    // yuck.
+    std::list<QString> slist;
+    slist.push_back(QLatin1String("foo"));
+    slist.push_back(QLatin1String("bar"));
+    slist.push_back(QLatin1String("baz"));
+
+    QCOMPARE(list.toStdList(), slist);
+    QCOMPARE(list, QList<QString>() << "foo" << "bar" << "baz");
+}
+
+void tst_QList::toVector() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    QCOMPARE(list.toVector(), QVector<QString>() << "foo" << "bar" << "baz");
+}
+
+void tst_QList::value() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    // test real values
+    QCOMPARE(list.value(0), QLatin1String("foo"));
+    QCOMPARE(list.value(2), QLatin1String("baz"));
+
+    // test empty default
+    QCOMPARE(list.value(3), QString());
+    QCOMPARE(list.value(-1), QString());
+
+    // test defaults
+    QLatin1String defaultstr("default");
+    QCOMPARE(list.value(-1, defaultstr), defaultstr);
+    QCOMPARE(list.value(3, defaultstr), defaultstr);
+}
+
+void tst_QList::testOperators() const
+{
+    QList<QString> list;
+    list << "foo" << "bar" << "baz";
+
+    QList<QString> listtwo;
+    listtwo << "foo" << "bar" << "baz";
+
+    // test equal
+    QVERIFY(list == listtwo);
+
+    // not equal
+    listtwo.append("not equal");
+    QVERIFY(list != listtwo);
+
+    // +=
+    list += listtwo;
+    QVERIFY(list.size() == 7);
+    QVERIFY(listtwo.size() == 4);
+    QCOMPARE(list, QList<QString>() << "foo" << "bar" << "baz" << "foo" << "bar" << "baz" << "not equal");
+
+    // =
+    list = listtwo;
+    QCOMPARE(list, listtwo);
+    QCOMPARE(list, QList<QString>() << "foo" << "bar" << "baz" << "not equal");
+
+    // []
+    QCOMPARE(list[0], QLatin1String("foo"));
+    QCOMPARE(list[list.size() - 1], QLatin1String("not equal"));
+}
+
+void tst_QList::testSTLIterators() const
+{
+    QList<QString> list;
+
+    // create a list
+    list << "foo" << "bar" << "baz";
+    QList<QString>::iterator it = list.begin();
+    QCOMPARE(*it, QLatin1String("foo")); it++;
+    QCOMPARE(*it, QLatin1String("bar")); it++;
+    QCOMPARE(*it, QLatin1String("baz")); it++;
+    QCOMPARE(it, list.end()); it--;
+
+    // walk backwards
+    QCOMPARE(*it, QLatin1String("baz")); it--;
+    QCOMPARE(*it, QLatin1String("bar")); it--;
+    QCOMPARE(*it, QLatin1String("foo"));
+
+    // test erase
+    it = list.erase(it);
+    QVERIFY(list.size() == 2);
+    QCOMPARE(*it, QLatin1String("bar"));
+
+    // test multiple erase
+    it = list.erase(it, it + 2);
+    QVERIFY(list.size() == 0);
+    QCOMPARE(it, list.end());
+
+    // insert again
+    it = list.insert(it, QLatin1String("foo"));
+    QVERIFY(list.size() == 1);
+    QCOMPARE(*it, QLatin1String("foo"));
+
+    // insert again
+    it = list.insert(it, QLatin1String("bar"));
+    QVERIFY(list.size() == 2);
+    QCOMPARE(*it++, QLatin1String("bar"));
+    QCOMPARE(*it, QLatin1String("foo"));
+}
+
 QTEST_APPLESS_MAIN(tst_QList)
 #include "tst_qlist.moc"