QList: add relational operators <,<=,>,>=

std::vector has them, too.

[ChangeLog][QtCore][QList] Added relational operators <, <=, >, >= if the element
type supports operator<.

Change-Id: Id2bd905e92c0365ad9f439d49908045c8df309c3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 33 insertions, 0 deletions

diff --git a/tests/auto/corelib/tools/qlist/tst_qlist.cpp b/tests/auto/corelib/tools/qlist/tst_qlist.cpp
index 1207986dde..6ec3064564 100644
--- a/tests/auto/corelib/tools/qlist/tst_qlist.cpp
+++ b/tests/auto/corelib/tools/qlist/tst_qlist.cpp
@@ -76,6 +76,13 @@ struct Movable {
         return i == other.i;
     }
 
+    bool operator<(const Movable &other) const
+    {
+        check(state, Constructed);
+        check(other.state, Constructed);
+        return i < other.i;
+    }
+
     Movable &operator=(const Movable &other)
     {
         check(state, Constructed);
@@ -144,6 +151,13 @@ struct Optimal
         return i == other.i;
     }
 
+    bool operator<(const Optimal &other) const
+    {
+        check(state, Constructed);
+        check(other.state, Constructed);
+        return i < other.i;
+    }
+
     Optimal &operator=(const Optimal &other)
     {
         check(state, Constructed);
@@ -220,6 +234,12 @@ struct Complex
         return value == other.value;
     }
 
+    bool operator<(Complex const &other) const
+    {
+        check(); other.check();
+        return value < other.value;
+    }
+
     void check() const
     {
         QVERIFY(this == checkSum);
@@ -1576,6 +1596,19 @@ void tst_QList::testOperators() const
     // []
     QCOMPARE(list[0], T_FOO);
     QCOMPARE(list[list.size() - 1], T_CAT);
+
+    // <, >, <=, >=
+    QVERIFY(!(list <  listtwo));
+    QVERIFY(!(list >  listtwo));
+    QVERIFY(  list <= listtwo);
+    QVERIFY(  list >= listtwo);
+    listtwo.push_back(T_CAT);
+    QVERIFY(  list <  listtwo);
+    QVERIFY(!(list >  listtwo));
+    QVERIFY(  list <= listtwo);
+    QVERIFY(!(list >= listtwo));
+    QVERIFY(listtwo >  list);
+    QVERIFY(listtwo >= list);
 }
 
 void tst_QList::testOperatorsOptimal() const