/*=========================================================================

  Library:   CTK

  Copyright (c) Kitware Inc.

  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0.txt

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.

=========================================================================*/

// Qt includes
#include <QApplication>
#include <QDoubleSpinBox>
#include <QLineEdit>
#include <QString>
#include <QStyle>
#include <QStyleOptionSlider>
#include <QTimer>

// CTK includes
#include "ctkDoubleSpinBox.h"
#include "ctkTest.h"

// STD includes
#include <limits>

// ----------------------------------------------------------------------------
class ctkDoubleSpinBoxTester: public QObject
{
  Q_OBJECT
private slots:
  void testUI();

  void testToLocals();

  void testSetValue();
  void testSetValue_data();

  void testSetValueOutsideRange();

  void testSetMinimum();
  void testSetMinimum_data();

  void testSetMaximum();
  void testSetMaximum_data();

  void testSetRange();
  void testSetRange_data();

  void testDecimalsByKey();
  void testDecimalsByKey_data();

  void testPrefix();
  void testPrefix_data();

  void testDecimalsByValue();
  void testDecimalsByValue_data();

  void testDecimalPointAlwaysVisible();
  void testDecimalPointAlwaysVisible_data();
};

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testUI()
{
  ctkDoubleSpinBox spinBox;
  spinBox.setMinimum(-100.);
  spinBox.setMaximum(100.);
  spinBox.setDecimalsOption( ctkDoubleSpinBox::DecimalsByValue |ctkDoubleSpinBox::DecimalsByShortcuts );
  spinBox.setValue(26.2110001);
  spinBox.setPrefix("A: ");
  spinBox.setSetMode(ctkDoubleSpinBox::SetAlways);
  spinBox.show();
#if (QT_VERSION >= 0x50000)
  QTest::qWaitForWindowActive(&spinBox);
#else
  QTest::qWaitForWindowShown(&spinBox);
#endif
  QObject::connect(&spinBox, SIGNAL(valueChanged(double)),
                   &spinBox, SLOT(setValue(double)), Qt::QueuedConnection);

  QDoubleSpinBox doubleSpinBox;
  doubleSpinBox.setMinimum(-100.);
  doubleSpinBox.setMaximum(100.);
  doubleSpinBox.setValue(2.);
  //doubleSpinBox.show();
  //QTest::qWaitForWindowShown(&doubleSpinBox);

  //qApp->exec();
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testToLocals()
{
  bool ok;
  QLocale().toDouble("+.0", &ok);
  QVERIFY(ok);
  QLocale().toDouble("0.0 1", &ok);
  QVERIFY(!ok);
}

//-----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testSetValue()
{
  ctkDoubleSpinBox spinBox;
  spinBox.setValue(25.);

  QFETCH(double, value);
  QSignalSpy valueChangedSpy(&spinBox, SIGNAL(valueChanged(double)));
  spinBox.setValue(value);

  QFETCH(double, expectedValue);
  QCOMPARE(spinBox.value(), expectedValue);

  const bool valueChanged = (expectedValue != 25.);
  QCOMPARE(valueChangedSpy.count(), valueChanged ? 1 : 0);
}

//-----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testSetValue_data()
{
  QTest::addColumn<double>("value");
  QTest::addColumn<double>("expectedValue");

  QTest::newRow("1. -> 1.]") << 1. << 1.;
  QTest::newRow("25. -> 25.]") << 25. << 25.;
  QTest::newRow("25.00001 -> 25.00001]") << 25.00001 << 25.00001;
  QTest::newRow("100. -> 99.99]") << 100. << 99.99;
  QTest::newRow("-1. -> 0.]") << -1. << 0.;

  QTest::newRow("min -> 0.") << std::numeric_limits<double>::min() << std::numeric_limits<double>::min();
  QTest::newRow("max -> 99.99") << std::numeric_limits<double>::max() << 99.99;
  QTest::newRow("-inf -> 0.") << -std::numeric_limits<double>::infinity() << 0.;
  QTest::newRow("inf -> 99.99") << std::numeric_limits<double>::infinity() << 99.99;
  QTest::newRow("NaN -> 99.99") << std::numeric_limits<double>::quiet_NaN() << 0.;
}

//-----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testSetValueOutsideRange()
{
  // This test is a bit different from testSetValue(), we start at 0. and must
  // stay in 0.
  ctkDoubleSpinBox spinBox;
  QSignalSpy valueChangedSpy(&spinBox, SIGNAL(valueChanged(double)));
  spinBox.setValue(-10.);
  QCOMPARE(spinBox.value(), 0.);
  QCOMPARE(valueChangedSpy.count(), 0);
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testSetMinimum()
{
  ctkDoubleSpinBox spinBox;
  QFETCH(double, minimum);
  spinBox.setMinimum(minimum);

  QFETCH(double, expectedMinimum);
  QFETCH(double, expectedValue);

  QCOMPARE(spinBox.minimum(), expectedMinimum);
  QCOMPARE(spinBox.value(), expectedValue);
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testSetMinimum_data()
{
  QTest::addColumn<double>("minimum");
  QTest::addColumn<double>("expectedMinimum");
  QTest::addColumn<double>("expectedValue");

  QTest::newRow("0. -> 0.") << 0. << 0. << 0.;
  QTest::newRow("99.99 -> 99.99") << 99.99 << 99.99 << 99.99;
  QTest::newRow("10.0123 -> 10.0123") << 10.0123 << 10.0123 << 10.0123;
  QTest::newRow("-10.0123 -> 0.") << -10.0123 << -10.0123 << 0.;
  QTest::newRow("200.0123 -> 200.0123") << 200.0123 << 200.0123 << 200.0123;
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testSetMaximum()
{
  ctkDoubleSpinBox spinBox;
  QFETCH(double, maximum);
  spinBox.setMaximum(maximum);

  QFETCH(double, expectedMaximum);
  QFETCH(double, expectedValue);
  QCOMPARE(spinBox.maximum(), expectedMaximum);
  QCOMPARE(spinBox.value(), expectedValue);
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testSetMaximum_data()
{
  QTest::addColumn<double>("maximum");
  QTest::addColumn<double>("expectedMaximum");
  QTest::addColumn<double>("expectedValue");

  QTest::newRow("0. -> 0.") << 0. << 0. << 0.;
  QTest::newRow("99.99 -> 0.") << 99.99 << 99.99 << 0.;
  QTest::newRow("10.0123 -> 0.") << 10.0123 << 10.0123 << 0.;
  QTest::newRow("-10.0123 -> -10.0123") << -10.0123 << -10.0123 << -10.0123;
  QTest::newRow("200.0123 -> 0.") << 200.0123 << 200.0123 << 0.;
}

//-----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testSetRange()
{
  ctkDoubleSpinBox spinBox;
  spinBox.setValue(25.);

  QSignalSpy valueChangedSpy(&spinBox,
                             SIGNAL(valueChanged(double)));

  QFETCH(double, minimum);
  QFETCH(double, maximum);
  spinBox.setRange(minimum, maximum);

  QFETCH(double, expectedMinimum);
  QFETCH(double, expectedMaximum);
  ctkTest::COMPARE(spinBox.minimum(), expectedMinimum);
  ctkTest::COMPARE(spinBox.maximum(), expectedMaximum);

  QFETCH(double, expectedValue);
  ctkTest::COMPARE(spinBox.value(), expectedValue);

  const bool valueChanged = expectedValue != 25.;
  ctkTest::COMPARE(valueChangedSpy.count(), valueChanged ? 1 : 0);
}

//-----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testSetRange_data()
{
  QTest::addColumn<double>("minimum");
  QTest::addColumn<double>("maximum");
  QTest::addColumn<double>("expectedMinimum");
  QTest::addColumn<double>("expectedMaximum");
  QTest::addColumn<double>("expectedValue");

  QTest::newRow("[1.,98.]") << 1. << 98. << 1. << 98. << 25.;
  QTest::newRow("[-1.,101.]") << -1. << 101. << -1. << 101. << 25.;
  QTest::newRow("[1.,10.]") << 1. << 10. << 1. << 10. << 10.;
  QTest::newRow("[90.,99.]") << 90. << 99. << 90. << 99. << 90.;
  QTest::newRow("[min,max]")
    << std::numeric_limits<double>::min()
    << std::numeric_limits<double>::max()
    << std::numeric_limits<double>::min()
    << QVariant(std::numeric_limits<double>::max()).toDouble()
    << 25.;
  QTest::newRow("[-max,max]")
    << -std::numeric_limits<double>::max()
    << std::numeric_limits<double>::max()
    << -std::numeric_limits<double>::max()
    << std::numeric_limits<double>::max()
    << 25.;
  QTest::newRow("[-inf,inf]")
    << -std::numeric_limits<double>::infinity()
    << std::numeric_limits<double>::infinity()
    << -std::numeric_limits<double>::infinity()
    << std::numeric_limits<double>::infinity()
    << 25.;
  QTest::newRow("[NaN,NaN]")
    << std::numeric_limits<double>::quiet_NaN()
    << std::numeric_limits<double>::quiet_NaN()
    << std::numeric_limits<double>::quiet_NaN()
    << std::numeric_limits<double>::quiet_NaN()
    << std::numeric_limits<double>::quiet_NaN();
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testDecimalsByKey()
{
  ctkDoubleSpinBox spinBox;
  spinBox.setMinimum(-200.);
  spinBox.setMaximum(200.);
  spinBox.setValue(1.23);

  QFETCH(int, decimalsOptions);
  spinBox.setDecimalsOption( static_cast<ctkDoubleSpinBox::DecimalsOptions>(decimalsOptions) );
  const int oldDecimals = spinBox.decimals();

  QFETCH(int, cursorPosition);
  QFETCH(int, key);

  spinBox.lineEdit()->setCursorPosition(cursorPosition);
  //spinBox.show();
  //QTest::qWaitForWindowShown(&spinBox);
  //qApp->exec();
  QSignalSpy spy(&spinBox, SIGNAL(decimalsChanged(int)));
  QTest::keyClick(spinBox.lineEdit(), static_cast<Qt::Key>(key));

  QFETCH(QString, expectedText);
  QFETCH(double, expectedValue);
  QFETCH(int, expectedDecimals);

  QCOMPARE(spinBox.text(), expectedText);
  QCOMPARE(spinBox.value(), expectedValue);
  QCOMPARE(spinBox.decimals(), expectedDecimals);
  QCOMPARE(spy.count(), spinBox.decimals() != oldDecimals ? 1 : 0);
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testDecimalsByKey_data()
{
  QTest::addColumn<int>("decimalsOptions");
  QTest::addColumn<int>("cursorPosition");
  QTest::addColumn<int>("key");
  QTest::addColumn<QString>("expectedText");
  QTest::addColumn<double>("expectedValue");
  QTest::addColumn<int>("expectedDecimals");

  QList<int> options;
  // ctkDoubleSpinBox::DecimalsByKey
  options << ctkDoubleSpinBox::DecimalsByKey;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 0:'1' -> 11.23")
    << options.last() << 0 << int(Qt::Key_1) << "11.23"<< 11.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 0:'del' -> .23")
    << options.last() << 0 << int(Qt::Key_Delete) << ".23" << .23 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 0:'backspace' -> 1.23")
    << options.last() << 0 << int(Qt::Key_Backspace) << "1.23" << 1.23 << 2;

  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 1:'1' -> 11.23")
    << options.last() << 1 << int(Qt::Key_1) << "11.23" << 11.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 1:'del' -> 123")
    << options.last() << 1 << int(Qt::Key_Delete) << "123" << 123. << 0;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 1:'backspace' -> .23")
    << options.last() << 1 << int(Qt::Key_Backspace) << ".23" << .23 << 2;

  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 2:'1' -> 1.12")
    << options.last() << 2 << int(Qt::Key_1) << "1.12" << 1.12 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 2:'del' -> 1.3")
    << options.last() << 2 << int(Qt::Key_Delete) << "1.3" << 1.3 << 1;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 2:'backspace' -> 123")
    << options.last() << 2 << int(Qt::Key_Backspace) << "123" << 123. << 0;

  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 3:'1' -> 1.21")
    << options.last() << 3 << int(Qt::Key_1) << "1.21" << 1.21 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 3:'del' -> 1.2")
    << options.last() << 3 << int(Qt::Key_Delete) << "1.2" << 1.2 << 1;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 3:'backspace' -> 1.3")
    << options.last() << 3 << int(Qt::Key_Backspace) << "1.3" << 1.3 << 1;

  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 4:'1' -> 1.231")
    << options.last() << 4 << int(Qt::Key_1) << "1.231" << 1.231 << 3;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 4:'del' -> 1.23")
    << options.last() << 4 << int(Qt::Key_Delete) << "1.23" << 1.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey 4:'backspace' -> 1.2")
    << options.last() << 4 << int(Qt::Key_Backspace) << "1.2" << 1.2 << 1;

  // ctkDoubleSpinBox::ReplaceDecimals
  options << ctkDoubleSpinBox::ReplaceDecimals;
  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 0:'1' -> 11.23")
    << options.last() << 0 << int(Qt::Key_1) << "11.23"<< 11.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 0:'del' -> .23")
    << options.last() << 0 << int(Qt::Key_Delete) << ".23" << .23 << 2;
  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 0:'backspace' -> 1.23")
    << options.last() << 0 << int(Qt::Key_Backspace) << "1.23" << 1.23 << 2;

  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 1:'1' -> 11.23")
    << options.last() << 1 << int(Qt::Key_1) << "11.23" << 11.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 1:'del' -> 123")
    << options.last() << 1 << int(Qt::Key_Delete) << "123" << 123. << 2;
  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 1:'backspace' -> .23")
    << options.last() << 1 << int(Qt::Key_Backspace) << ".23" << .23 << 2;

  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 2:'1' -> 1.13")
    << options.last() << 2 << int(Qt::Key_1) << "1.13" << 1.13 << 2;
  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 2:'del' -> 1.3")
    << options.last() << 2 << int(Qt::Key_Delete) << "1.3" << 1.3 << 2;
  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 2:'backspace' -> 123")
    << options.last() << 2 << int(Qt::Key_Backspace) << "123" << 123. << 2;

  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 3:'1' -> 1.21")
    << options.last() << 3 << int(Qt::Key_1) << "1.21" << 1.21 << 2;
  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 3:'del' -> 1.2")
    << options.last() << 3 << int(Qt::Key_Delete) << "1.2" << 1.2 << 2;
  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 3:'backspace' -> 1.3")
    << options.last() << 3 << int(Qt::Key_Backspace) << "1.3" << 1.3 << 2;

  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 4:'1' -> 1.23")
    << options.last() << 4 << int(Qt::Key_1) << "1.23" << 1.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 4:'del' -> 1.23")
    << options.last() << 4 << int(Qt::Key_Delete) << "1.23" << 1.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::ReplaceDecimals 4:'backspace' -> 1.2")
    << options.last() << 4 << int(Qt::Key_Backspace) << "1.2" << 1.2 << 2;

  // ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals
  options << (ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals);
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 0:'1' -> 11.23")
    << options.last() << 0 << int(Qt::Key_1) << "11.23"<< 11.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 0:'del' -> .23")
    << options.last() << 0 << int(Qt::Key_Delete) << ".23" << .23 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 0:'backspace' -> 1.23")
    << options.last() << 0 << int(Qt::Key_Backspace) << "1.23" << 1.23 << 2;

  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 1:'1' -> 11.23")
    << options.last() << 1 << int(Qt::Key_1) << "11.23" << 11.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 1:'del' -> 123")
    << options.last() << 1 << int(Qt::Key_Delete) << "123" << 123. << 0;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 1:'backspace' -> .23")
    << options.last() << 1 << int(Qt::Key_Backspace) << ".23" << .23 << 2;

  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 2:'1' -> 1.13")
    << options.last() << 2 << int(Qt::Key_1) << "1.13" << 1.13 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 2:'del' -> 1.3")
    << options.last() << 2 << int(Qt::Key_Delete) << "1.3" << 1.3 << 1;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 2:'backspace' -> 123")
    << options.last() << 2 << int(Qt::Key_Backspace) << "123" << 123. << 0;

  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 3:'1' -> 1.21")
    << options.last() << 3 << int(Qt::Key_1) << "1.21" << 1.21 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 3:'del' -> 1.2")
    << options.last() << 3 << int(Qt::Key_Delete) << "1.2" << 1.2 << 1;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 3:'backspace' -> 1.3")
    << options.last() << 3 << int(Qt::Key_Backspace) << "1.3" << 1.3 << 1;

  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 4:'1' -> 1.231")
    << options.last() << 4 << int(Qt::Key_1) << "1.231" << 1.231 << 3;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 4:'del' -> 1.23")
    << options.last() << 4 << int(Qt::Key_Delete) << "1.23" << 1.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::ReplaceDecimals 4:'backspace' -> 1.2")
    << options.last() << 4 << int(Qt::Key_Backspace) << "1.2" << 1.2 << 1;

  // ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals
  options << (ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals);
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 0:'1' -> 11.23")
    << options.last() << 0 << int(Qt::Key_1) << "11.23"<< 11.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 0:'del' -> .23")
    << options.last() << 0 << int(Qt::Key_Delete) << ".23" << .23 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 0:'backspace' -> 1.23")
    << options.last() << 0 << int(Qt::Key_Backspace) << "1.23" << 1.23 << 2;

  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 1:'1' -> 11.23")
    << options.last() << 1 << int(Qt::Key_1) << "11.23" << 11.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 1:'del' -> 123")
    << options.last() << 1 << int(Qt::Key_Delete) << "123" << 123. << 0;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 1:'backspace' -> .23")
    << options.last() << 1 << int(Qt::Key_Backspace) << ".23" << .23 << 2;

  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 2:'1' -> 1.123")
    << options.last() << 2 << int(Qt::Key_1) << "1.123" << 1.123 << 3;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 2:'del' -> 1.3")
    << options.last() << 2 << int(Qt::Key_Delete) << "1.3" << 1.3 << 1;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 2:'backspace' -> 123")
    << options.last() << 2 << int(Qt::Key_Backspace) << "123" << 123. << 0;

  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 3:'1' -> 1.213")
    << options.last() << 3 << int(Qt::Key_1) << "1.213" << 1.213 << 3;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 3:'del' -> 1.2")
    << options.last() << 3 << int(Qt::Key_Delete) << "1.2" << 1.2 << 1;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 3:'backspace' -> 1.3")
    << options.last() << 3 << int(Qt::Key_Backspace) << "1.3" << 1.3 << 1;

  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 4:'1' -> 1.231")
    << options.last() << 4 << int(Qt::Key_1) << "1.231" << 1.231 << 3;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 4:'del' -> 1.23")
    << options.last() << 4 << int(Qt::Key_Delete) << "1.23" << 1.23 << 2;
  QTest::newRow("ctkDoubleSpinBox::DecimalsByKey|ctkDoubleSpinBox::InsertDecimals 4:'backspace' -> 1.2")
    << options.last() << 4 << int(Qt::Key_Backspace) << "1.2" << 1.2 << 1;

  foreach(int option, options)
    {
    // bad keys are always rejected
    for (int i = 0; i < 5; ++i)
      {
      QTest::newRow(QString("%1 %2:'a' -> 1.23").arg(option).arg(i).toLatin1())
        << option << i << int(Qt::Key_A) << "1.23" << 1.23 << 2;
      }
    // sign keys are only for the first digit
    QTest::newRow(QString("%1 0:'+' -> 1.23").arg(option).toLatin1())
      << option << 0 << int(Qt::Key_Plus) << "+1.23" << 1.23 << 2;
    QTest::newRow(QString("%1 0:'-' -> -1.23").arg(option).toLatin1())
      << option << 0 << int(Qt::Key_Minus) << "-1.23" << -1.23 << 2;
    for (int i = 1; i < 5; ++i)
      {
      QTest::newRow(QString("%1 %2:'+' -> 1.23").arg(option).arg(i).toLatin1())
        << option << i << int(Qt::Key_Plus) << "1.23" << 1.23 << 2;
      QTest::newRow(QString("%1 %2:'-' -> 1.23").arg(option).arg(i).toLatin1())
        << option << i << int(Qt::Key_Minus) << "1.23" << 1.23 << 2;
      }
    }
}
// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testPrefix()
{
  ctkDoubleSpinBox spinBox;
  spinBox.setPrefix("A: ");
  spinBox.setDecimalsOption( ctkDoubleSpinBox::FixedDecimals );

  QFETCH(int, cursorPosition);
  QFETCH(int, key);

  spinBox.lineEdit()->setCursorPosition(cursorPosition);
  QTest::keyClick(spinBox.lineEdit(), static_cast<Qt::Key>(key));

  //spinBox.show();
  //QTest::qWaitForWindowShown(&spinBox);
  //qApp->exec();

  QFETCH(double, expectedValue);
  QFETCH(QString, expectedText);
  QFETCH(int, expectedCursorPosition);

  QCOMPARE(spinBox.text(), expectedText);
  QCOMPARE(spinBox.value(), expectedValue);
  QCOMPARE(spinBox.decimals(), 2);
  QCOMPARE(spinBox.lineEdit()->cursorPosition(), expectedCursorPosition);
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testPrefix_data()
{
  QTest::addColumn<int>("cursorPosition");
  QTest::addColumn<int>("key");
  QTest::addColumn<QString>("expectedText");
  QTest::addColumn<double>("expectedValue");
  QTest::addColumn<int>("expectedCursorPosition");

  QTest::newRow("0:'1' -> 0.00") << 0 << int(Qt::Key_1) << "A: 0.00"<< 0.00 << 0;
  QTest::newRow("1:'1' -> 10.00") << 1 << int(Qt::Key_1) << "A: 10.00"<< 10.00 << 4;
  QTest::newRow("2:'1' -> 10.00") << 2 << int(Qt::Key_1) << "A: 10.00"<< 10.00 << 4;
  QTest::newRow("3:'1' -> 10.00") << 3 << int(Qt::Key_1) << "A: 10.00"<< 10.00 << 4;
  QTest::newRow("4:'1' -> 01.00") << 4 << int(Qt::Key_1) << "A: 01.00"<< 1.00 << 5;
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testDecimalsByValue()
{
  ctkDoubleSpinBox spinBox;
  spinBox.setMinimum(-100.);
  spinBox.setMaximum(100.);
  spinBox.setValue(1.23);
  spinBox.setDecimalsOption( ctkDoubleSpinBox::DecimalsByValue );
  spinBox.setDecimals(4);

  const int oldDecimals = spinBox.decimals();
  QSignalSpy spy(&spinBox, SIGNAL(decimalsChanged(int)));

  QFETCH(double, value);
  spinBox.setValue(value);

  QFETCH(QString, expectedText);
  QFETCH(double, expectedValue);
  QFETCH(int, expectedDecimals);

  QCOMPARE(spinBox.text(), expectedText);
  QCOMPARE(spinBox.value(), expectedValue);
  QCOMPARE(spinBox.decimals(), expectedDecimals);
  QCOMPARE(spy.count(), spinBox.decimals() != oldDecimals ? 1 : 0);
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testDecimalsByValue_data()
{
  QTest::addColumn<double>("value");
  QTest::addColumn<QString>("expectedText");
  QTest::addColumn<double>("expectedValue");
  QTest::addColumn<int>("expectedDecimals");

  QTest::newRow("0") << 0. << "0"<< 0. << 0;
  QTest::newRow("0.1") << 0.1 << "0.1" << 0.1 << 1;
  QTest::newRow("0.02") << 0.02 << "0.02" << 0.02 << 2;
  QTest::newRow("10.003") << 10.003 << "10.003" << 10.003 << 3;
  QTest::newRow("-0.0004") << -0.0004 << "-0.0004" << -0.0004 << 4;
  QTest::newRow("0.000056") << 0.000056 << "0.000056" << 0.000056 << 6;
  // internally represented as 123456.001109999997425
  QTest::newRow("5.00111") << 5.00111 << "5.00111" << 5.00111 << 5;
  QTest::newRow("same value with more decimals") << 1.234567 << "1.234567" << 1.234567 << 6;
  QTest::newRow("same value") << 1.23 << "1.23" << 1.23 << 2;
  QTest::newRow("same value with less decimals") << 1.234 << "1.234" << 1.234 << 3;
  QTest::newRow("16 decimals") << 0.1234567891013151 << "0.1235" << 0.1234567891013151 << 4;
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testDecimalPointAlwaysVisible()
{
  ctkDoubleSpinBox spinBox;
  spinBox.setDecimals(0);
  spinBox.setDecimalsOption( ctkDoubleSpinBox::DecimalPointAlwaysVisible );

  QFETCH(double, value);
  spinBox.setValue(value);

  QFETCH(QString, expectedText);
  QCOMPARE(spinBox.text(), expectedText);
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testDecimalPointAlwaysVisible_data()
{
  QTest::addColumn<double>("value");
  QTest::addColumn<QString>("expectedText");

  QTest::newRow("ctkDoubleSpinBox::DecimalPointAlwaysVisible 0") << 0. << "0.";
  QTest::newRow("ctkDoubleSpinBox::DecimalsByValue 2") << 2. << "2.";
  QTest::newRow("ctkDoubleSpinBox::DecimalsByValue 1.01") << 1.01 << "1.";
}

// ----------------------------------------------------------------------------
CTK_TEST_MAIN(ctkDoubleSpinBoxTest)
#include "moc_ctkDoubleSpinBoxTest.cpp"