OmaPhoto 1.0.0: the Linux port of Compositor
A layered image editor for Linux and Omarchy, ported from Compositor (github.com/robbietilton/Compositor), whose Swift source is its specification. It reads and writes Compositor's .comp projects. Packages for Ubuntu, Fedora and Arch come from the release workflow; scripts/install/ holds one install script per distribution family, and flake.nix serves NixOS. Co-Authored-By: Claude <noreply@anthropic.com>
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#include "SessionFixtures.h"
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#include "SessionRecord.h"
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#include <QSignalSpy>
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#include <QtTest>
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// The `changed()` contract for masks in the session.
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namespace {
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std::unique_ptr<EditorSession> twoLayers(QUuid &lower, QUuid &upper)
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{
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auto session = std::make_unique<EditorSession>();
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session->createDocument(8, 8);
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for (QUuid *id : {&lower, &upper}) {
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session->insert(ImportedImage(QImage(4, 4, QImage::Format_RGBA8888_Premultiplied), QImage(), "Image"));
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*id = session->activeLayerID().value();
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}
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return session;
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}
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}
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class MaskSignalTests : public QObject {
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Q_OBJECT
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private slots:
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void masksAnnounceAndRefuseInSilence();
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void theLastSignalOfEveryMaskChangeSeesWhatItLeaves();
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void clippingAnnouncesAndRefusesInSilence();
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void theLastSignalOfEveryClippingChangeSeesWhatItLeaves();
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};
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void MaskSignalTests::masksAnnounceAndRefuseInSilence()
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{
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QUuid lower, upper;
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const std::unique_ptr<EditorSession> session = twoLayers(lower, upper);
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QSignalSpy changes(session.get(), &EditorSession::changed);
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const auto announced = [&](const std::function<void()> &change) {
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const qsizetype before = changes.count();
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change();
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return changes.count() > before;
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};
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// No mask yet: nothing to toggle, delete, unlink or copy.
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QVERIFY(!announced([&] { session->toggleLayerMask(); }));
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QVERIFY(!announced([&] { session->deleteLayerMask(); }));
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QVERIFY(!announced([&] { session->toggleMaskLink(upper); }));
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QVERIFY(!announced([&] { session->copyMask(upper, lower); }));
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QVERIFY(announced([&] { session->addLayerMask(); }));
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QVERIFY(!announced([&] { session->addLayerMask(); }));
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QVERIFY(announced([&] { session->toggleLayerMask(); }));
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QVERIFY(announced([&] { session->toggleMaskLink(upper); }));
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QVERIFY(!announced([&] { session->toggleMaskLink(QUuid::createUuid()); }));
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QVERIFY(announced([&] { session->selectLayerTarget(upper, false); }));
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QVERIFY(announced([&] { session->selectLayerTarget(upper, true); }));
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QVERIFY(announced([&] { session->copyMask(upper, lower); }));
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QVERIFY(!announced([&] { session->copyMask(upper, upper); }));
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QVERIFY(announced([&] { session->deleteLayerMask(); }));
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session->setIsImporting(true);
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QVERIFY(!announced([&] { session->selectLayerTarget(upper, true); }));
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QVERIFY(!announced([&] { session->addLayerMask(); }));
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QVERIFY(!announced([&] { session->toggleMaskLink(upper); }));
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}
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void MaskSignalTests::theLastSignalOfEveryMaskChangeSeesWhatItLeaves()
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{
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QUuid lower, upper;
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const std::unique_ptr<EditorSession> session = twoLayers(lower, upper);
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QStringList seen;
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connect(session.get(), &EditorSession::changed, this, [&] { seen = described(*session); });
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const auto stale = [&](const std::function<void()> &change) {
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seen.clear();
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change();
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const QStringList left = described(*session);
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return seen == left ? QString() : seen.join("; ") + " != " + left.join("; ");
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};
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QCOMPARE(stale([&] { session->addLayerMask(false); }), QString());
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QVERIFY(seen.contains("mask target 1") && seen.filter(" mask ").size() == 1);
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QCOMPARE(stale([&] { session->toggleLayerMask(); }), QString());
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QCOMPARE(stale([&] { session->selectLayerTarget(upper, false); }), QString());
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QVERIFY(seen.contains("mask target 0"));
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QCOMPARE(stale([&] { session->selectLayerTarget(upper, true); }), QString());
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QVERIFY(seen.contains("mask target 1"));
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QCOMPARE(stale([&] { session->toggleMaskLink(upper); }), QString());
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// The mask alone: begun, moved, committed.
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QCOMPARE(stale([&] { session->beginTransform(); }), QString());
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QVERIFY(seen.filter(" mask").filter("edit ").size() == 1);
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QCOMPARE(stale([&] { session->nudgeLayer(2, 1); }), QString());
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QCOMPARE(stale([&] { session->commitTransform(); }), QString());
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QVERIFY(seen.contains("names Transform Layer Mask/") && seen.filter("edit ").isEmpty());
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QCOMPARE(stale([&] { session->copyMask(upper, lower); }), QString());
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QVERIFY(seen.contains("active " + lower.toString()) && seen.contains("mask target 1") && seen.filter(" mask ").size() == 2);
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// Another layer, an undo, a project: the target is dropped.
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QCOMPARE(stale([&] { session->selectLayer(upper); }), QString());
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QVERIFY(seen.contains("mask target 0"));
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QCOMPARE(stale([&] { session->selectLayerTarget(upper, true); }), QString());
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QCOMPARE(stale([&] { session->deleteLayerMask(); }), QString());
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QVERIFY(seen.contains("mask target 0") && seen.filter(" mask ").size() == 1);
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QCOMPARE(stale([&] { session->undo(); }), QString());
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QVERIFY(seen.filter(" mask ").size() == 2);
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QCOMPARE(stale([&] { session->selectLayerTarget(upper, true); }), QString());
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const ProjectSnapshot snapshot = session->projectSnapshot().value();
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QCOMPARE(stale([&] { session->installProject(snapshot, "masks.comp"); }), QString());
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QVERIFY(seen.contains("mask target 0"));
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QCOMPARE(stale([&] { session->selectLayerTarget(upper, true); }), QString());
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QCOMPARE(stale([&] { session->clearProject(); }), QString());
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QVERIFY(seen.contains("mask target 0"));
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}
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void MaskSignalTests::clippingAnnouncesAndRefusesInSilence()
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{
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QUuid lower, upper;
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const std::unique_ptr<EditorSession> session = twoLayers(lower, upper);
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QSignalSpy changes(session.get(), &EditorSession::changed);
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const auto announced = [&](const std::function<void()> &change) {
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const qsizetype before = changes.count();
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change();
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return changes.count() > before;
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};
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// A layer nobody knows: nothing to clip, free or delete.
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const QUuid stranger = QUuid::createUuid();
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QVERIFY(!announced([&] { session->toggleClippingMask(stranger); }));
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QVERIFY(!announced([&] { session->removeLiveMask(stranger); }));
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QVERIFY(!announced([&] { session->finishDeletingLayer(stranger, {}); }));
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QVERIFY(!announced([&] { session->finishDeletingLayers({}, {}); }));
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QVERIFY(!session->canToggleClippingMask(stranger));
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// Nothing below to clip to; no link to free.
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QVERIFY(!announced([&] { session->toggleClippingMask(lower); }));
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QVERIFY(!announced([&] { session->removeLiveMask(upper); }));
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QVERIFY(!announced([&] { session->linkMask(upper, upper); }));
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QVERIFY(announced([&] { session->toggleClippingMask(upper); }));
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// The same link again is no change.
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QVERIFY(!announced([&] { session->linkMask(lower, upper); }));
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QVERIFY(!announced([&] { session->linkMask(upper, lower); }));
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QVERIFY(announced([&] { session->removeLiveMask(upper); }));
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QVERIFY(announced([&] { session->linkMask(lower, upper); }));
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QVERIFY(announced([&] { session->toggleClippingMask(upper); }));
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QVERIFY(announced([&] { session->setBrushError(QString("failed")); }));
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QVERIFY(announced([&] { session->setBrushError(std::nullopt); }));
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session->setIsImporting(true);
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QVERIFY(!announced([&] { session->toggleClippingMask(upper); }));
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QVERIFY(!announced([&] { session->linkMask(lower, upper); }));
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}
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void MaskSignalTests::theLastSignalOfEveryClippingChangeSeesWhatItLeaves()
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{
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QUuid lower, upper;
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const std::unique_ptr<EditorSession> session = twoLayers(lower, upper);
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QStringList seen;
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connect(session.get(), &EditorSession::changed, this, [&] { seen = described(*session); });
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const auto stale = [&](const std::function<void()> &change) {
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seen.clear();
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change();
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const QStringList left = described(*session);
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return seen == left ? QString() : seen.join("; ") + " != " + left.join("; ");
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};
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QCOMPARE(stale([&] { session->toggleClippingMask(upper); }), QString());
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QVERIFY(seen.filter("clipped to " + lower.toString()).size() == 1);
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QCOMPARE(stale([&] { session->toggleClippingMask(upper); }), QString());
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QVERIFY(seen.filter("clipped to " + lower.toString()).isEmpty());
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QCOMPARE(stale([&] { QVERIFY(session->linkMask(lower, upper)); }), QString());
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QCOMPARE(stale([&] { session->removeLiveMask(upper); }), QString());
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QCOMPARE(stale([&] { QVERIFY(session->linkMask(lower, upper)); }), QString());
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// A move that breaks the stack frees it at once.
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QCOMPARE(stale([&] { QVERIFY(session->placeLayer(lower, std::nullopt)); }), QString());
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QVERIFY(seen.filter("clipped to none").size() == 2);
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QCOMPARE(stale([&] { session->undo(); }), QString());
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// Base gone, baked pixels in, link gone: one state.
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const ImportedImage baked(QImage(4, 4, QImage::Format_RGBA8888_Premultiplied), QImage(), "Baked");
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QCOMPARE(stale([&] { session->finishDeletingLayer(lower, {{upper, baked}}); }), QString());
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QVERIFY(seen.filter(QStringLiteral("pixels %1").arg(baked.identity().cacheKey)).size() == 1);
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QCOMPARE(stale([&] { session->setBrushError(QString("failed")); }), QString());
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QVERIFY(seen.contains("tool error failed"));
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}
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QTEST_GUILESS_MAIN(MaskSignalTests)
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#include "MaskSignalTests.moc"
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