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Enable QPromise<T>::resolve() by reference

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This commit is contained in:
Simon Brunel 2018-02-14 22:36:22 +01:00
parent 18739bd8e0
commit 4af2740d80
6 changed files with 81 additions and 0 deletions
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1
src/qtpromise/qpromise.h
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@ -88,6 +88,7 @@ public: // STATIC
template <template <typename, typename...> class Sequence = QVector, typename ...Args>
inline static QPromise<QVector<T> > all(const Sequence<QPromise<T>, Args...>& promises);
inline static QPromise<T> resolve(const T& value);
inline static QPromise<T> resolve(T&& value);
private:

8
src/qtpromise/qpromise.inl
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@ -244,6 +244,14 @@ inline QPromise<QVector<T> > QPromise<T>::all(const Sequence<QPromise<T>, Args..
});
}
template <typename T>
inline QPromise<T> QPromise<T>::resolve(const T& value)
{
return QPromise<T>([&](const QPromiseResolve<T>& resolve) {
resolve(value);
});
}
template <typename T>
inline QPromise<T> QPromise<T>::resolve(T&& value)
{

26
tests/auto/qtpromise/benchmark/tst_benchmark.cpp
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@ -20,6 +20,7 @@ class tst_benchmark : public QObject
private Q_SLOTS:
void valueResolve();
void valueResolveStatic();
void valueReject();
void valueThen();
void valueFinally();
@ -126,6 +127,31 @@ void tst_benchmark::valueResolve()
}
}
void tst_benchmark::valueResolveStatic()
{
{ // should move the value when resolved by rvalue
Data::logs().reset();
QPromise<Data>::resolve(Data(42)).wait();
QCOMPARE(Data::logs().ctor, 1);
QCOMPARE(Data::logs().copy, 0);
QCOMPARE(Data::logs().move, 1); // move value to the promise data
QCOMPARE(Data::logs().refs, 0);
}
{ // should create one copy of the value when resolved by lvalue
{
Data::logs().reset();
Data value(42);
QPromise<Data>::resolve(value).wait();
}
QCOMPARE(Data::logs().ctor, 1);
QCOMPARE(Data::logs().copy, 1); // copy value to the promise data
QCOMPARE(Data::logs().move, 0);
QCOMPARE(Data::logs().refs, 0);
}
}
void tst_benchmark::valueReject()
{
{ // should not create any data if rejected

1
tests/auto/qtpromise/qpromise/qpromise.pro
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@ -6,6 +6,7 @@ SUBDIRS += \
fail \
finally \
operators \
resolve \
tap \
then \
timeout

4
tests/auto/qtpromise/qpromise/resolve/resolve.pro Normal file
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@ -0,0 +1,4 @@
TARGET = tst_qpromise_resolve
SOURCES += $$PWD/tst_resolve.cpp
include(../../qtpromise.pri)

41
tests/auto/qtpromise/qpromise/resolve/tst_resolve.cpp Normal file
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@ -0,0 +1,41 @@
// Tests
#include "../../shared/utils.h"
// QtPromise
#include <QtPromise>
// Qt
#include <QtTest>
using namespace QtPromise;
class tst_qpromise_resolve : public QObject
{
Q_OBJECT
private Q_SLOTS:
void value();
void empty_void();
};
QTEST_MAIN(tst_qpromise_resolve)
#include "tst_resolve.moc"
void tst_qpromise_resolve::value()
{
const int value = 42;
auto p0 = QPromise<int>::resolve(value);
auto p1 = QPromise<int>::resolve(43);
QCOMPARE(p0.isFulfilled(), true);
QCOMPARE(p1.isFulfilled(), true);
QCOMPARE(waitForValue(p0, -1), 42);
QCOMPARE(waitForValue(p1, -1), 43);
}
void tst_qpromise_resolve::empty_void()
{
auto p = QPromise<void>::resolve();
QCOMPARE(p.isFulfilled(), true);
}