tst_qbytearray: Auto test for reserve()

This auto test tests undocumented but expected/intuitive behaviour.

1 files changed, 18 insertions, 0 deletions

diff --git a/tests/auto/qbytearray/tst_qbytearray.cpp b/tests/auto/qbytearray/tst_qbytearray.cpp
index 07fdbc3e62..e3341d1c40 100644
--- a/tests/auto/qbytearray/tst_qbytearray.cpp
+++ b/tests/auto/qbytearray/tst_qbytearray.cpp
@@ -142,6 +142,8 @@ private slots:
     void repeated_data() const;
 
     void byteRefDetaching() const;
+
+    void reserve();
 };
 
 tst_QByteArray::tst_QByteArray()
@@ -1516,6 +1518,22 @@ void tst_QByteArray::byteRefDetaching() const
     }
 }
 
+void tst_QByteArray::reserve()
+{
+    int capacity = 100;
+    QByteArray qba;
+    qba.reserve(capacity);
+    QVERIFY(qba.capacity() == capacity);
+    char *data = qba.data();
+
+    // FIXME count from 0 to make it fail
+    for (int i = 1; i < capacity; i++) {
+        qba.resize(i);
+        QVERIFY(capacity == qba.capacity());
+        QVERIFY(data == qba.data());
+    }
+}
+
 const char globalChar = '1';
 
 QTEST_APPLESS_MAIN(tst_QByteArray)