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

  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 testDecimalsByValueSignals();
  void testDecimalsByValueSignals_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();
  bool result = QTest::qWaitForWindowActive(&spinBox);
  Q_UNUSED(result);
  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::testDecimalsByValueSignals()
{
  ctkDoubleSpinBox spinBox;
  spinBox.setDecimalsOption( ctkDoubleSpinBox::DecimalsByValue );
  // 0 -> 0.1 with 1 decimal
  spinBox.setValue(0.1);

  QSignalSpy decimalsChangedSpy(&spinBox, SIGNAL(decimalsChanged(int)));
  QSignalSpy valueChangedSpy(&spinBox, SIGNAL(valueChanged(double)));

  // 0.1 -> 1. with 0 decimal
  QFETCH(double, newValue);
  spinBox.setValue(newValue);

  QCOMPARE(spinBox.value(), newValue);
  QCOMPARE(decimalsChangedSpy.count(), spinBox.decimals() != 1 ? 1 : 0);
  QCOMPARE(valueChangedSpy.count(), newValue != 0.1 ? 1 : 0);
}

// ----------------------------------------------------------------------------
void ctkDoubleSpinBoxTester::testDecimalsByValueSignals_data()
{
  QTest::addColumn<double>("newValue");
  QTest::newRow("0: change value, remove decimal") << 0.;
  QTest::newRow("0.01: change value, add decimal") << 0.01;
  QTest::newRow("0.1: same value, same decimal") << 0.1;
  QTest::newRow("0.11: change value, add decimal") << 0.11;
  QTest::newRow("0.2: change value, same decimal") << 0.2;
  QTest::newRow("1: change value, remove decimal") << 1.;
  QTest::newRow("1.1: change value, same decimal") << 1.1;
}

// ----------------------------------------------------------------------------
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 "ctkDoubleSpinBoxTest.moc"
