Files
sloposk/tests/tst_controller.cpp
T
ericek111andClaude Opus 5.5 e02b1a8237 Hold Keys mode: keys stay down while touched, like a hardware keyboard
- HardwareKeys presses a key's unshifted keysym on touch and releases it
  on lift, through fake input; held keys repeat and combine as on a
  physical keyboard (games, Shift+click)
- Shift/Ctrl/Alt/Super are plain held keys, caps lock is the system's,
  dead keys compose in the app
- No long-press, flick, trackpad or rollover in this mode; nothing is
  left held when the mode is turned off or touches are cancelled
- Settings switch; default stays the touch (virtual keyboard) mode

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-14 22:17:11 +02:00

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#include "FakeEngine.h"
#include "input/KeyboardController.h"
#include "layout/LayoutModel.h"
#include "TestLayouts.h"
#include <QTest>
#include <xkbcommon/xkbcommon-keysyms.h>
using namespace Qt::StringLiterals;
namespace {
const TextContext Field{.field = true};
// A field with some text already: no auto-shift until a test asks for it.
const TextContext MidSentence{.field = true, .hasSurroundingText = true, .textBeforeCursor = u"so"_s};
KeyDef makeKey(KeyType type, const QString &label = {})
{
KeyDef k;
k.type = type;
k.label = label;
return k;
}
} // namespace
class TestController : public QObject
{
Q_OBJECT
private:
FakeEngine engine;
LayoutModel model;
std::unique_ptr<KeyboardController> controller;
qint64 now = 0;
void tap(const KeyDef &key, KeyOutput output = KeyOutput::Primary, const QString &alternate = {})
{
now += 1000; // far apart: never a double tap
controller->keyDown(key, now);
controller->keyUp(key, output, alternate, now + 50);
}
private Q_SLOTS:
void init()
{
engine = {};
model.setLayout(TestLayouts::build("us"));
model.setVisibleSections({MainSectionId});
controller = std::make_unique<KeyboardController>(engine, model);
controller->resetContext(MidSentence); // most tests type into a text field
}
void typesLowercase()
{
tap(makeKey(KeyType::Character, u"a"_s));
QCOMPARE(engine.output, u"a");
}
void shiftCapitalizesOneCharacter()
{
const KeyDef a = makeKey(KeyType::Character, u"a"_s);
tap(makeKey(KeyType::Shift));
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Once);
tap(a);
tap(a);
QCOMPARE(engine.output, u"Aa");
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Off);
}
void flickAndAlternateOutputs()
{
KeyDef e = makeKey(KeyType::Character, u"e"_s);
e.flick = u"3"_s;
tap(e, KeyOutput::Flick);
tap(e, KeyOutput::Alternate, u"é"_s);
QCOMPARE(engine.output, u"3é");
}
void backspaceActsOnPress()
{
controller->keyDown(makeKey(KeyType::Backspace), 0);
QCOMPARE(engine.keysyms, QList<quint32>{XKB_KEY_BackSpace});
}
void enterSendsReturn()
{
tap(makeKey(KeyType::Enter));
QCOMPARE(engine.keysyms, QList<quint32>{XKB_KEY_Return});
}
void layerSwitchChangesModelLayer()
{
KeyDef layer = makeKey(KeyType::LayerSwitch);
layer.target = u"numbers"_s;
controller->keyDown(layer, 0);
QCOMPARE(model.layerName(), u"numbers");
}
void backspaceStopsOnRelease()
{
const KeyDef backspace = makeKey(KeyType::Backspace);
controller->keyDown(backspace, 0);
controller->keyUp(backspace, KeyOutput::Primary, {}, 50);
QTest::qWait(700); // past the repeat delay
QCOMPARE(engine.keysyms.size(), 1);
}
void capitalizesAtSentenceStart()
{
controller->resetContext(Field);
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Once);
for (const char *c : {"h", "i", ".", " "})
tap(makeKey(KeyType::Character, QString::fromLatin1(c)));
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Once);
tap(makeKey(KeyType::Character, u"o"_s));
QCOMPARE(engine.output, u"Hi. O");
}
void noCapitalizationInPasswordFields()
{
TextContext context = Field;
context.purpose = TextContext::Purpose::Password;
controller->setContext(context);
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Off);
}
void fieldTextDrivesCapitalization()
{
TextContext context = Field;
context.hasSurroundingText = true;
context.textBeforeCursor = u"Done! "_s;
controller->setContext(context);
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Once);
context.textBeforeCursor = u"Done, "_s;
controller->setContext(context);
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Off);
}
void doubleSpaceTypesPeriod()
{
const KeyDef space = makeKey(KeyType::Space);
tap(makeKey(KeyType::Character, u"a"_s));
tap(space);
tap(space);
QCOMPARE(engine.output, u"a. ");
QCOMPARE(engine.mismatchedReplacements, 0);
// A Backspace keysym may reach the client after the commit and eat the new space.
QVERIFY(engine.keysyms.isEmpty());
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Once);
}
void doubleSpacePeriodCanBeTurnedOff()
{
controller->setOptions({.doubleSpacePeriod = false});
const KeyDef space = makeKey(KeyType::Space);
tap(makeKey(KeyType::Character, u"a"_s));
tap(space);
tap(space);
QCOMPARE(engine.output, u"a ");
}
void autoCapitalizationCanBeTurnedOff()
{
controller->resetContext(Field);
controller->setOptions({.autoCapitalize = false});
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Off);
tap(makeKey(KeyType::Character, u"a"_s));
QCOMPARE(engine.output, u"a");
}
void doubleTapShiftLocksAtSentenceStart()
{
controller->resetContext(Field); // a field was focused
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Once); // auto-shift
const KeyDef shift = makeKey(KeyType::Shift);
controller->keyDown(shift, 5000);
controller->keyUp(shift, KeyOutput::Primary, {}, 5050);
controller->keyDown(shift, 5200);
controller->keyUp(shift, KeyOutput::Primary, {}, 5250);
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Locked);
}
void slideTypesSymbolAndSwitchesBack()
{
KeyDef layer = makeKey(KeyType::LayerSwitch);
layer.target = u"numbers"_s;
controller->keyDown(layer, 0);
controller->slideReleased(makeKey(KeyType::Character, u"5"_s), 100);
QCOMPARE(engine.output, u"5");
QCOMPARE(model.layerName(), u"letters");
}
void trackpadMovesCursor()
{
controller->moveCursor({2, -1});
QCOMPARE(engine.keysyms, (QList<quint32>{XKB_KEY_Right, XKB_KEY_Right, XKB_KEY_Up}));
}
void globeRequestsNextLayout()
{
int requested = 0;
connect(controller.get(), &KeyboardController::nextLayoutRequested, this, [&] { ++requested; });
tap(makeKey(KeyType::Globe));
QCOMPARE(requested, 1);
}
void keysymKeyActsOnPressAndRepeats()
{
KeyDef left = makeKey(KeyType::Keysym, u"←"_s);
left.keysym = XKB_KEY_Left;
left.repeat = true;
controller->keyDown(left, 0);
QCOMPARE(engine.keysyms, QList<quint32>{XKB_KEY_Left});
QTRY_VERIFY_WITH_TIMEOUT(engine.keysyms.size() >= 3, 2000); // held: repeats
controller->keyUp(left, KeyOutput::Primary, {}, 0);
const auto sent = engine.keysyms.size();
QTest::qWait(200);
QCOMPARE(engine.keysyms.size(), sent);
QVERIFY(engine.output.isEmpty()); // no text
}
void sectionsAreComposedAroundTheMainKeys()
{
const qsizetype mainKeys = model.rowCount();
const qreal mainUnits = model.totalUnits();
model.setVisibleSections({MainSectionId, u"function"_s});
QCOMPARE(model.rowCount(), mainKeys + 13);
QCOMPARE(model.totalUnits(), mainUnits); // above, not beside
model.setVisibleSections({MainSectionId, u"navigation"_s});
QCOMPARE(model.totalUnits(), mainUnits + 3);
model.setVisibleSections({u"numpad"_s});
QCOMPARE(model.rowCount(), 19);
model.setVisibleSections({});
QCOMPARE(model.rowCount(), mainKeys); // never nothing
}
KeyDef keysymKey(quint32 keysym)
{
KeyDef key = makeKey(KeyType::Keysym);
key.keysym = keysym;
return key;
}
KeyDef modifierKey(const QString &name)
{
KeyDef key = makeKey(KeyType::Modifier);
key.modifier = name;
return key;
}
void ctrlTurnsKeysIntoShortcuts()
{
tap(modifierKey(u"ctrl"_s));
QCOMPARE(controller->modifierModes().value(u"ctrl"_s).toInt(), int(KeyboardController::ShiftMode::Once));
tap(makeKey(KeyType::Character, u"c"_s));
QCOMPARE(engine.keysyms, QList<quint32>{XKB_KEY_c});
QCOMPARE(engine.lastModifiers, Qt::ControlModifier);
QVERIFY(engine.output.isEmpty());
// One-shot: the next key types again.
tap(makeKey(KeyType::Character, u"c"_s));
QCOMPARE(engine.output, u"c");
}
void heldModifierAppliesToEveryKey()
{
const KeyDef alt = modifierKey(u"alt"_s);
controller->keyDown(alt, 0);
tap(keysymKey(XKB_KEY_Tab));
tap(keysymKey(XKB_KEY_Tab));
controller->keyUp(alt, KeyOutput::Primary, {}, 9000);
QCOMPARE(engine.keysyms.size(), 2);
QCOMPARE(engine.lastModifiers, Qt::AltModifier);
QCOMPARE(controller->modifierModes().value(u"alt"_s).toInt(), int(KeyboardController::ShiftMode::Off));
}
void tappedShiftAppliesToFunctionKeys()
{
tap(makeKey(KeyType::Character, u"a"_s)); // mid-sentence: no auto-shift
tap(makeKey(KeyType::Shift));
tap(keysymKey(XKB_KEY_F5));
QCOMPARE(engine.keysyms.last(), quint32(XKB_KEY_F5));
QCOMPARE(engine.lastModifiers, Qt::ShiftModifier);
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Off); // used up
}
void autoShiftAndCapsLockDontApplyToFunctionKeys()
{
controller->resetContext(Field); // sentence start: auto-shift on
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Once);
tap(keysymKey(XKB_KEY_Left));
QCOMPARE(engine.lastModifiers, Qt::NoModifier);
tap(makeKey(KeyType::CapsLock));
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Locked);
tap(keysymKey(XKB_KEY_Left));
QCOMPARE(engine.lastModifiers, Qt::NoModifier);
tap(makeKey(KeyType::Character, u"a"_s));
tap(makeKey(KeyType::Character, u"b"_s));
QCOMPARE(engine.output, u"AB");
tap(makeKey(KeyType::CapsLock));
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Off);
}
void autoShiftCapitalizesLettersOnly()
{
KeyDef lj = makeKey(KeyType::Character, u"ľ"_s); // sk number row: Shift+ľ = 2
lj.shifted = u"2"_s;
KeyDef one = makeKey(KeyType::Character, u"+"_s);
one.shifted = u"1"_s;
controller->resetContext(Field); // sentence start
tap(one);
QCOMPARE(engine.output, u"+"); // not the shifted level
controller->resetContext(Field);
tap(lj);
QCOMPARE(engine.output, u"+Ľ");
tap(makeKey(KeyType::Shift)); // the user's shift does pick it
tap(lj);
QCOMPARE(engine.output, u"+Ľ2");
}
void deadKeyComposesWithNextCharacter()
{
KeyDef acute = makeKey(KeyType::Character, u"´"_s);
acute.dead = XKB_KEY_dead_acute;
tap(makeKey(KeyType::Character, u"x"_s));
tap(acute);
QVERIFY(engine.output == u"x"); // nothing typed yet
tap(makeKey(KeyType::Character, u"e"_s));
QVERIFY(engine.output.endsWith(u"é"_s));
}
void holdKeysPressesWhileDown()
{
controller->setOptions({.holdKeys = true});
const KeyDef shift = makeKey(KeyType::Shift);
const KeyDef a = makeKey(KeyType::Character, u"a"_s);
controller->keyDown(shift, 0);
QCOMPARE(model.isUppercase(), true); // labels follow the held shift
controller->keyDown(a, 10);
controller->keyUp(a, KeyOutput::Primary, {}, 20);
controller->keyUp(shift, KeyOutput::Primary, {}, 30);
using E = FakeEngine::KeyEvent;
QCOMPARE(engine.keyEvents, (QList<E>{{XKB_KEY_Shift_L, true}, {XKB_KEY_a, true},
{XKB_KEY_a, false}, {XKB_KEY_Shift_L, false}}));
QVERIFY(engine.output.isEmpty());
QVERIFY(engine.keysyms.isEmpty());
QCOMPARE(model.isUppercase(), false);
}
void holdKeysLeavesNoKeyStuck()
{
controller->setOptions({.holdKeys = true});
const KeyDef ctrl = modifierKey(u"ctrl"_s);
controller->keyDown(ctrl, 0);
QCOMPARE(controller->modifierModes().value(u"ctrl"_s).toInt(), 1);
controller->setOptions({}); // turned off while held
QVERIFY(engine.held.isEmpty());
controller->keyUp(ctrl, KeyOutput::Primary, {}, 10); // back to sticky rules: harmless
QVERIFY(engine.held.isEmpty());
}
void holdKeysSendsDeadKeysAndCapsLockToTheSystem()
{
controller->setOptions({.holdKeys = true});
KeyDef acute = makeKey(KeyType::Character, u"´"_s);
acute.dead = XKB_KEY_dead_acute;
tap(acute);
tap(makeKey(KeyType::CapsLock));
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Locked);
QCOMPARE(engine.keyEvents.first().keysym, quint32(XKB_KEY_dead_acute));
QCOMPARE(engine.keyEvents[2].keysym, quint32(XKB_KEY_Caps_Lock));
}
void noTextRulesWithoutAField()
{
controller->resetContext({}); // keys go to a window, not a text field
QCOMPARE(controller->shiftMode(), KeyboardController::ShiftMode::Off);
const KeyDef space = makeKey(KeyType::Space);
tap(makeKey(KeyType::Character, u"a"_s));
tap(space);
tap(space);
QCOMPARE(engine.output, u"a ");
}
void dismissEmitsSignal()
{
int dismissed = 0;
connect(controller.get(), &KeyboardController::dismissRequested, this, [&] { ++dismissed; });
tap(makeKey(KeyType::Dismiss));
QCOMPARE(dismissed, 1);
}
};
QTEST_GUILESS_MAIN(TestController)
#include "tst_controller.moc"