mirror of
https://github.com/simonbrunel/qtpromise.git
synced 2025-07-01 23:11:47 +08:00
Implement QPromise<Sequence<T>>::each(functor)
Call the given `functor` on each element in the promise value (i.e. `Sequence<T>`), then resolve to the original sequence unmodified. Also provide a static helper to directly filter values (`QtPromise::each(values, functor)`).
This commit is contained in:
Simon Brunel
4
tests/auto/qtpromise/helpers/each/each.pro
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4
tests/auto/qtpromise/helpers/each/each.pro
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@ -0,0 +1,4 @@
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TARGET = tst_qpromise_each
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SOURCES += $$PWD/tst_each.cpp
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include(../../qtpromise.pri)
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154
tests/auto/qtpromise/helpers/each/tst_each.cpp
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154
tests/auto/qtpromise/helpers/each/tst_each.cpp
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@ -0,0 +1,154 @@
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// Tests
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#include "../../shared/utils.h"
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// QtPromise
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#include <QtPromise>
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// Qt
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#include <QtTest>
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using namespace QtPromise;
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class tst_helpers_each : public QObject
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{
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Q_OBJECT
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private Q_SLOTS:
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void emptySequence();
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void preserveValues();
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void ignoreResult();
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void delayedFulfilled();
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void delayedRejected();
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void functorThrows();
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void functorArguments();
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void sequenceTypes();
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};
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QTEST_MAIN(tst_helpers_each)
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#include "tst_each.moc"
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namespace {
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template <class Sequence>
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struct SequenceTester
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{
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static void exec()
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{
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QVector<int> values;
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auto p = QtPromise::each(Sequence{42, 43, 44}, [&](int v, int i) {
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values << i << v;
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<Sequence>>::value));
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QCOMPARE(waitForValue(p, Sequence()), Sequence({42, 43, 44}));
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QCOMPARE(values, QVector<int>({0, 42, 1, 43, 2, 44}));
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}
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};
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} // anonymous namespace
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void tst_helpers_each::emptySequence()
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{
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QVector<int> values;
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auto p = QtPromise::each(QVector<int>{}, [&](int v, ...) {
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values << v;
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForValue(p, QVector<int>()), QVector<int>());
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QCOMPARE(values, QVector<int>({}));
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}
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void tst_helpers_each::preserveValues()
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{
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QVector<int> values;
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auto p = QtPromise::each(QVector<int>{42, 43, 44}, [&](int v, ...) {
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values << v + 1;
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForValue(p, QVector<int>()), QVector<int>({42, 43, 44}));
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QCOMPARE(values, QVector<int>({43, 44, 45}));
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}
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void tst_helpers_each::ignoreResult()
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{
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QVector<int> values;
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auto p = QtPromise::each(QVector<int>{42, 43, 44}, [&](int v, ...) {
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values << v + 1;
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return "Foo";
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForValue(p, QVector<int>()), QVector<int>({42, 43, 44}));
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QCOMPARE(values, QVector<int>({43, 44, 45}));
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}
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void tst_helpers_each::delayedFulfilled()
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{
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QMap<int, int> values;
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auto p = QtPromise::each(QVector<int>{42, 43, 44}, [&](int v, int index) {
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return QPromise<int>([&](const QPromiseResolve<int>& resolve) {
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QtPromisePrivate::qtpromise_defer([=, &values]() {
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values[v] = index;
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resolve(42);
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});
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});
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForValue(p, QVector<int>()), QVector<int>({42, 43, 44}));
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QMap<int, int> expected{{42, 0}, {43, 1}, {44, 2}};
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QCOMPARE(values, expected);
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}
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void tst_helpers_each::delayedRejected()
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{
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auto p = QtPromise::each(QVector<int>{42, 43, 44}, [](int v, ...) {
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return QPromise<int>([&](
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const QPromiseResolve<int>& resolve,
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const QPromiseReject<int>& reject) {
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QtPromisePrivate::qtpromise_defer([=]() {
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if (v == 43) {
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reject(QString("foo"));
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}
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resolve(v);
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});
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});
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForError(p, QString()), QString("foo"));
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}
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void tst_helpers_each::functorThrows()
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{
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auto p = QtPromise::each(QVector<int>{42, 43, 44}, [](int v, ...) {
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if (v == 44) {
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throw QString("foo");
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}
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForError(p, QString()), QString("foo"));
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}
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void tst_helpers_each::functorArguments()
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{
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QVector<int> values;
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auto p = QtPromise::each(QVector<int>{42, 43, 44}, [&](int v, int i) {
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values << i << v;
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForValue(p, QVector<int>()), QVector<int>({42, 43, 44}));
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QCOMPARE(values, QVector<int>({0, 42, 1, 43, 2, 44}));
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}
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void tst_helpers_each::sequenceTypes()
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{
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SequenceTester<QList<int>>::exec();
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SequenceTester<QVector<int>>::exec();
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SequenceTester<std::list<int>>::exec();
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SequenceTester<std::vector<int>>::exec();
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}
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@ -2,6 +2,7 @@ TEMPLATE = subdirs
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SUBDIRS += \
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all \
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attempt \
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each \
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filter \
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map \
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reject \
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4
tests/auto/qtpromise/qpromise/each/each.pro
Normal file
4
tests/auto/qtpromise/qpromise/each/each.pro
Normal file
@ -0,0 +1,4 @@
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TARGET = tst_qpromise_each
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SOURCES += $$PWD/tst_each.cpp
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include(../../qtpromise.pri)
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170
tests/auto/qtpromise/qpromise/each/tst_each.cpp
Normal file
170
tests/auto/qtpromise/qpromise/each/tst_each.cpp
Normal file
@ -0,0 +1,170 @@
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// Tests
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#include "../../shared/utils.h"
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// QtPromise
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#include <QtPromise>
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// Qt
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#include <QtTest>
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using namespace QtPromise;
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class tst_qpromise_each : public QObject
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{
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Q_OBJECT
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private Q_SLOTS:
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void emptySequence();
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void preserveValues();
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void ignoreResult();
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void delayedFulfilled();
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void delayedRejected();
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void functorThrows();
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void functorArguments();
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void sequenceTypes();
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};
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QTEST_MAIN(tst_qpromise_each)
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#include "tst_each.moc"
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namespace {
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template <class Sequence>
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struct SequenceTester
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{
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static void exec()
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{
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QVector<int> values;
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auto p = QtPromise::qPromise(Sequence{42, 43, 44}).each([&](int v, int i) {
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values << i << v;
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}).each([&](int v, ...) {
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values << v;
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return QString("foo");
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}).each([&](int v, ...) {
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values << v + 1;
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return QPromise<QString>::resolve(QString("foo")).then([&](){
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values << -1;
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});
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}).each([&](int v, ...) {
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values << v + 2;
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<Sequence>>::value));
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QCOMPARE(waitForValue(p, Sequence()), Sequence({42, 43, 44}));
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QVector<int> expected{
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0, 42, 1, 43, 2, 44,
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42, 43, 44,
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43, 44, 45,
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-1, -1, -1,
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44, 45, 46
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};
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QCOMPARE(values, expected);
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}
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};
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} // anonymous namespace
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void tst_qpromise_each::emptySequence()
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{
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QVector<int> values;
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auto p = QPromise<QVector<int>>::resolve({}).each([&](int v, ...) {
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values << v;
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForValue(p, QVector<int>()), QVector<int>());
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QCOMPARE(values, QVector<int>({}));
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}
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void tst_qpromise_each::preserveValues()
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{
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QVector<int> values;
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auto p = QPromise<QVector<int>>::resolve({42, 43, 44}).each([&](int v, ...) {
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values << v + 1;
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForValue(p, QVector<int>()), QVector<int>({42, 43, 44}));
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QCOMPARE(values, QVector<int>({43, 44, 45}));
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}
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void tst_qpromise_each::ignoreResult()
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{
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QVector<int> values;
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auto p = QPromise<QVector<int>>::resolve({42, 43, 44}).each([&](int v, ...) {
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values << v + 1;
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return "Foo";
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForValue(p, QVector<int>()), QVector<int>({42, 43, 44}));
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QCOMPARE(values, QVector<int>({43, 44, 45}));
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}
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void tst_qpromise_each::delayedFulfilled()
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{
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QMap<int, int> values;
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auto p = QPromise<QVector<int>>::resolve({42, 43, 44}).each([&](int v, int index) {
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return QPromise<void>::resolve().delay(250).then([=, &values]() {
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values[v] = index;
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return 42;
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});
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForValue(p, QVector<int>()), QVector<int>({42, 43, 44}));
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QMap<int, int> expected{{42, 0}, {43, 1}, {44, 2}};
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QCOMPARE(values, expected);
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}
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void tst_qpromise_each::delayedRejected()
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{
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auto p = QPromise<QVector<int>>::resolve({42, 43, 44}).each([](int v, ...) {
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return QPromise<int>([&](
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const QPromiseResolve<int>& resolve,
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const QPromiseReject<int>& reject) {
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QtPromisePrivate::qtpromise_defer([=]() {
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if (v == 44) {
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reject(QString("foo"));
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}
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resolve(v);
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});
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});
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForError(p, QString()), QString("foo"));
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}
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void tst_qpromise_each::functorThrows()
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{
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auto p = QPromise<QVector<int>>::resolve({42, 43, 44}).each([](int v, ...) {
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if (v == 44) {
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throw QString("foo");
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}
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForError(p, QString()), QString("foo"));
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}
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void tst_qpromise_each::functorArguments()
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{
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QVector<int> values;
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auto p = QPromise<QVector<int>>::resolve({42, 43, 44}).each([&](int v, int i) {
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values << i << v;
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});
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Q_STATIC_ASSERT((std::is_same<decltype(p), QPromise<QVector<int>>>::value));
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QCOMPARE(waitForValue(p, QVector<int>()), QVector<int>({42, 43, 44}));
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QCOMPARE(values, QVector<int>({0, 42, 1, 43, 2, 44}));
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}
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void tst_qpromise_each::sequenceTypes()
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{
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SequenceTester<QList<int>>::exec();
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SequenceTester<QVector<int>>::exec();
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SequenceTester<std::list<int>>::exec();
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SequenceTester<std::vector<int>>::exec();
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}
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@ -2,6 +2,7 @@ TEMPLATE = subdirs
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SUBDIRS += \
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construct \
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delay \
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each \
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fail \
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filter \
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finally \
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