QTestLib: support explicit bool conversions in QVERIFY

[ChangeLog][QTestLib] It is now possible to use variables of
types with an explicit operator bool in the QVERIFY macro.

Change-Id: I2685df164a616f6a065d689867daa9ea1de78e08
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/auto/testlib/selftests/cmptest/tst_cmptest.cpp b/tests/auto/testlib/selftests/cmptest/tst_cmptest.cpp
index 9ada718682..3a8d27631e 100644
--- a/tests/auto/testlib/selftests/cmptest/tst_cmptest.cpp
+++ b/tests/auto/testlib/selftests/cmptest/tst_cmptest.cpp
@@ -147,6 +147,7 @@ private slots:
     void verify2();
     void tryVerify();
     void tryVerify2();
+    void verifyExplicitOperatorBool();
 };
 
 enum MyUnregisteredEnum { MyUnregisteredEnumValue1, MyUnregisteredEnumValue2 };
@@ -458,5 +459,21 @@ void tst_Cmptest::tryVerify2()
     QTRY_VERIFY2_WITH_TIMEOUT(opaqueFunc() < 2, QByteArray::number(opaqueFunc()).constData(), 1);
 }
 
+void tst_Cmptest::verifyExplicitOperatorBool()
+{
+    struct ExplicitOperatorBool {
+        int m_i;
+        explicit ExplicitOperatorBool(int i) : m_i(i) {}
+        explicit operator bool() const { return m_i > 0; }
+        bool operator !() const { return !bool(*this); }
+    };
+
+    ExplicitOperatorBool val1(42);
+    QVERIFY(val1);
+
+    ExplicitOperatorBool val2(-273);
+    QVERIFY(!val2);
+}
+
 QTEST_MAIN(tst_Cmptest)
 #include "tst_cmptest.moc"