Merge branch 'master' of https://github.com/microsoft/calculator into Updateto2012release

src/CalcManager/UnitConverter.cpp

@@ -24,7 +24,7 @@ static constexpr uint32_t OPTIMALDIGITSALLOWED = 7U;
 static constexpr wchar_t LEFTESCAPECHAR = L'{';
 static constexpr wchar_t RIGHTESCAPECHAR = L'}';
 
-static const double OPTIMALDECIMALALLOWED = 1e-6; // pow(10, -1 * (OPTIMALDIGITSALLOWED - 1));
+static const double OPTIMALDECIMALALLOWED = 1e-6;  // pow(10, -1 * (OPTIMALDIGITSALLOWED - 1));
 static const double MINIMUMDECIMALALLOWED = 1e-14; // pow(10, -1 * (MAXIMUMDIGITSALLOWED - 1));
 
 unordered_map<wchar_t, wstring> quoteConversions;
@@ -149,6 +149,11 @@ void UnitConverter::SetCurrentUnitTypes(const Unit& fromType, const Unit& toType
         return;
     }
 
+    if (m_fromType != fromType)
+    {
+        m_switchedActive = true;
+    }
+
     m_fromType = fromType;
     m_toType = toType;
     Calculate();
@@ -191,6 +196,11 @@ void UnitConverter::SwitchActive(const wstring& newValue)
     }
 }
 
+bool UnitConversionManager::UnitConverter::IsSwitchedActive() const
+{
+    return m_switchedActive;
+}
+
 wstring UnitConverter::CategoryToString(const Category& c, wstring_view delimiter)
 {
     return Quote(std::to_wstring(c.id))

src/CalcManager/UnitConverter.h

@@ -223,6 +223,7 @@ namespace UnitConversionManager
         virtual Category GetCurrentCategory() = 0;
         virtual void SetCurrentUnitTypes(const Unit& fromType, const Unit& toType) = 0;
         virtual void SwitchActive(const std::wstring& newValue) = 0;
+        virtual bool IsSwitchedActive() const = 0;
         virtual std::wstring SaveUserPreferences() = 0;
         virtual void RestoreUserPreferences(_In_ std::wstring_view userPreferences) = 0;
         virtual void SendCommand(Command command) = 0;
@@ -246,6 +247,7 @@ namespace UnitConversionManager
         Category GetCurrentCategory() override;
         void SetCurrentUnitTypes(const Unit& fromType, const Unit& toType) override;
         void SwitchActive(const std::wstring& newValue) override;
+        bool IsSwitchedActive() const override;
         std::wstring SaveUserPreferences() override;
         void RestoreUserPreferences(std::wstring_view userPreference) override;
         void SendCommand(Command command) override;

src/CalcViewModel/Common/CopyPasteManager.cpp

@@ -502,23 +502,32 @@ ULONG32 CopyPasteManager::StandardScientificOperandLength(Platform::String ^ ope
 {
     auto operandWstring = wstring(operand->Data());
     const bool hasDecimal = operandWstring.find('.') != wstring::npos;
+    auto length = operandWstring.length();
 
     if (hasDecimal)
     {
-        if (operandWstring.length() >= 2)
+        if (length >= 2)
         {
             if ((operandWstring[0] == L'0') && (operandWstring[1] == L'.'))
             {
-                return static_cast<ULONG32>(operandWstring.length() - 2);
+                length -= 2;
             }
             else
             {
-                return static_cast<ULONG32>(operandWstring.length() - 1);
+                length -= 1;
             }
         }
     }
 
-    return static_cast<ULONG32>(operandWstring.length());
+    auto exponentPos = operandWstring.find('e');
+    const bool hasExponent = exponentPos != wstring::npos;
+    if (hasExponent)
+    {
+        auto expLength = operandWstring.substr(exponentPos).length();
+        length -= expLength;
+    }
+
+    return static_cast<ULONG32>(length);
 }
 
 ULONG32 CopyPasteManager::ProgrammerOperandLength(Platform::String ^ operand, NumberBase numberBase)

src/CalcViewModel/UnitConverterViewModel.cpp

@@ -134,7 +134,6 @@ UnitConverterViewModel::UnitConverterViewModel(const shared_ptr<UCM::IUnitConver
     m_currencyFormatter->IsGrouped = true;
     m_currencyFormatter->Mode = CurrencyFormatterMode::UseCurrencyCode;
     m_currencyFormatter->ApplyRoundingForCurrency(RoundingAlgorithm::RoundHalfDown);
-    m_currencyMaxFractionDigits = m_currencyFormatter->FractionDigits;
 
     auto resourceLoader = AppResourceProvider::GetInstance();
     m_localizedValueFromFormat = resourceLoader->GetResourceString(UnitConverterResourceKeys::ValueFromFormat);
@@ -228,7 +227,9 @@ void UnitConverterViewModel::OnUnitChanged(Object ^ parameter)
         return;
     }
 
+    UpdateCurrencyFormatter();
     m_model->SetCurrentUnitTypes(UnitFrom->GetModelUnit(), UnitTo->GetModelUnit());
+
     if (m_supplementaryResultsTimer != nullptr)
     {
         // End timer to show results immediately
@@ -246,7 +247,7 @@ void UnitConverterViewModel::OnSwitchActive(Platform::Object ^ unused)
     if (m_relocalizeStringOnSwitch)
     {
         // clean up any ill-formed strings that were in progress before the switch
-        ValueFrom = ConvertToLocalizedString(m_valueFromUnlocalized, false);
+        ValueFrom = ConvertToLocalizedString(m_valueFromUnlocalized, false, CurrencyFormatterParameterFrom);
     }
 
     SwitchConversionParameters();
@@ -269,9 +270,11 @@ void UnitConverterViewModel::OnSwitchActive(Platform::Object ^ unused)
 
     m_isInputBlocked = false;
     m_model->SwitchActive(m_valueFromUnlocalized);
+
+    UpdateIsDecimalEnabled();
 }
 
-String ^ UnitConverterViewModel::ConvertToLocalizedString(const std::wstring& stringToLocalize, bool allowPartialStrings)
+String ^ UnitConverterViewModel::ConvertToLocalizedString(const std::wstring& stringToLocalize, bool allowPartialStrings, CurrencyFormatterParameter cfp)
 {
     Platform::String ^ result;
 
@@ -280,10 +283,33 @@ String ^ UnitConverterViewModel::ConvertToLocalizedString(const std::wstring& st
         return result;
     }
 
+    CurrencyFormatter ^ currencyFormatter;
+
+    switch (cfp)
+    {
+    case CurrencyFormatterParameter::ForValue1:
+        currencyFormatter = m_currencyFormatter1;
+        break;
+    case CurrencyFormatterParameter::ForValue2:
+        currencyFormatter = m_currencyFormatter2;
+        break;
+    default:
+        currencyFormatter = m_currencyFormatter;
+        break;
+    }
+
+    // If unit hasn't been set, currencyFormatter1/2 is nullptr. Fallback to default.
+    if (currencyFormatter == nullptr)
+    {
+        currencyFormatter = m_currencyFormatter;
+    }
+
+    int lastCurrencyFractionDigits = currencyFormatter->FractionDigits;
+
     m_decimalFormatter->IsDecimalPointAlwaysDisplayed = false;
     m_decimalFormatter->FractionDigits = 0;
-    m_currencyFormatter->IsDecimalPointAlwaysDisplayed = false;
+    currencyFormatter->IsDecimalPointAlwaysDisplayed = false;
-    m_currencyFormatter->FractionDigits = 0;
+    currencyFormatter->FractionDigits = 0;
 
     wstring::size_type posOfE = stringToLocalize.find(L'e');
     if (posOfE != wstring::npos)
@@ -293,7 +319,8 @@ String ^ UnitConverterViewModel::ConvertToLocalizedString(const std::wstring& st
         std::wstring significandStr(stringToLocalize.substr(0, posOfE));
         std::wstring exponentStr(stringToLocalize.substr(posOfSign + 1, stringToLocalize.length() - posOfSign));
 
-        result += ConvertToLocalizedString(significandStr, allowPartialStrings) + "e" + signOfE + ConvertToLocalizedString(exponentStr, allowPartialStrings);
+        result += ConvertToLocalizedString(significandStr, allowPartialStrings, cfp) + "e" + signOfE
+                  + ConvertToLocalizedString(exponentStr, allowPartialStrings, cfp);
     }
     else
     {
@@ -304,7 +331,7 @@ String ^ UnitConverterViewModel::ConvertToLocalizedString(const std::wstring& st
 
         if (hasDecimal)
         {
-            if (allowPartialStrings)
+            if (allowPartialStrings && lastCurrencyFractionDigits > 0)
             {
                 // allow "in progress" strings, like "3." that occur during the composition of
                 // a final number. Without this, when typing the three characters in "3.2"
@@ -312,18 +339,18 @@ String ^ UnitConverterViewModel::ConvertToLocalizedString(const std::wstring& st
                 // typed a post-decimal digit.
 
                 m_decimalFormatter->IsDecimalPointAlwaysDisplayed = true;
-                m_currencyFormatter->IsDecimalPointAlwaysDisplayed = true;
+                currencyFormatter->IsDecimalPointAlwaysDisplayed = true;
             }
 
             // force post-decimal digits so that trailing zeroes entered by the user aren't suddenly cut off.
             m_decimalFormatter->FractionDigits = static_cast<int>(stringToLocalize.length() - (posOfDecimal + 1));
-            m_currencyFormatter->FractionDigits = m_currencyMaxFractionDigits;
+            currencyFormatter->FractionDigits = lastCurrencyFractionDigits;
         }
 
         if (IsCurrencyCurrentCategory)
         {
-            wstring currencyResult = m_currencyFormatter->Format(stod(stringToLocalize))->Data();
+            wstring currencyResult = currencyFormatter->Format(stod(stringToLocalize))->Data();
-            wstring currencyCode = m_currencyFormatter->Currency->Data();
+            wstring currencyCode = currencyFormatter->Currency->Data();
 
             // CurrencyFormatter always includes LangCode or Symbol. Make it include LangCode
             // because this includes a non-breaking space. Remove the LangCode.
@@ -381,6 +408,10 @@ String ^ UnitConverterViewModel::ConvertToLocalizedString(const std::wstring& st
         }
         result = L"-" + result;
     }
+
+    // restore the original fraction digits
+    currencyFormatter->FractionDigits = lastCurrencyFractionDigits;
+
     return result;
 }
 
@@ -394,9 +425,9 @@ void UnitConverterViewModel::DisplayPasteError()
 
 void UnitConverterViewModel::UpdateDisplay(const wstring& from, const wstring& to)
 {
-    String ^ fromStr = this->ConvertToLocalizedString(from, true);
+    String ^ fromStr = this->ConvertToLocalizedString(from, true, CurrencyFormatterParameterFrom);
     UpdateInputBlocked(from);
-    String ^ toStr = this->ConvertToLocalizedString(to, true);
+    String ^ toStr = this->ConvertToLocalizedString(to, true, CurrencyFormatterParameterTo);
 
     bool updatedValueFrom = ValueFrom != fromStr;
     bool updatedValueTo = ValueTo != toStr;
@@ -473,14 +504,14 @@ void UnitConverterViewModel::OnButtonPressed(Platform::Object ^ parameter)
     }
 
     static constexpr UCM::Command OPERANDS[] = { UCM::Command::Zero, UCM::Command::One, UCM::Command::Two,   UCM::Command::Three, UCM::Command::Four,
-                                                   UCM::Command::Five, UCM::Command::Six, UCM::Command::Seven, UCM::Command::Eight, UCM::Command::Nine };
+                                                 UCM::Command::Five, UCM::Command::Six, UCM::Command::Seven, UCM::Command::Eight, UCM::Command::Nine };
-    if (m_isInputBlocked &&
+
-        command != UCM::Command::Clear &&
+    // input should be allowed if user just switches active, because we will clear values in such cases
-        command != UCM::Command::Backspace)
+    if (m_isInputBlocked && !m_model->IsSwitchedActive() && command != UCM::Command::Clear && command != UCM::Command::Backspace)
-	{
+    {
-		return;
+        return;
-	}
+    }
-	m_model->SendCommand(command);
+    m_model->SendCommand(command);
 
     TraceLogger::GetInstance()->LogConverterInputReceived(Mode);
 }
@@ -755,8 +786,8 @@ void UnitConverterViewModel::RefreshSupplementaryResults()
 
     for (tuple<wstring, UCM::Unit> suggestedValue : m_cachedSuggestedValues)
     {
-        SupplementaryResult ^ result =
+        SupplementaryResult ^ result = ref new SupplementaryResult(
-            ref new SupplementaryResult(this->ConvertToLocalizedString(get<0>(suggestedValue), false), ref new Unit(get<1>(suggestedValue)));
+            this->ConvertToLocalizedString(get<0>(suggestedValue), false, CurrencyFormatterParameter::Default), ref new Unit(get<1>(suggestedValue)));
         if (result->IsWhimsical())
         {
             whimsicals.push_back(result);
@@ -803,10 +834,46 @@ void UnitConverterViewModel::UpdateInputBlocked(_In_ const wstring& currencyInpu
     m_isInputBlocked = false;
     if (posOfDecimal != wstring::npos && IsCurrencyCurrentCategory)
     {
-        m_isInputBlocked = (posOfDecimal + static_cast<size_t>(m_currencyMaxFractionDigits) + 1 == currencyInput.length());
+        m_isInputBlocked = (posOfDecimal + static_cast<size_t>(CurrencyFormatterFrom->FractionDigits) + 1 == currencyInput.length());
     }
 }
 
+std::wstring TruncateFractionDigits(const std::wstring& n, int digitCount)
+{
+    auto i = n.find('.');
+    if (i == std::wstring::npos)
+        return n;
+    size_t actualDigitCount = n.size() - i - 1;
+    return n.substr(0, n.size() - (actualDigitCount - digitCount));
+}
+
+void UnitConverterViewModel::UpdateCurrencyFormatter()
+{
+    if (!IsCurrencyCurrentCategory || m_Unit1->Abbreviation->IsEmpty() || m_Unit2->Abbreviation->IsEmpty())
+        return;
+
+    m_currencyFormatter1 = ref new CurrencyFormatter(m_Unit1->Abbreviation);
+    m_currencyFormatter1->IsGrouped = true;
+    m_currencyFormatter1->Mode = CurrencyFormatterMode::UseCurrencyCode;
+    m_currencyFormatter1->ApplyRoundingForCurrency(RoundingAlgorithm::RoundHalfDown);
+
+    m_currencyFormatter2 = ref new CurrencyFormatter(m_Unit2->Abbreviation);
+    m_currencyFormatter2->IsGrouped = true;
+    m_currencyFormatter2->Mode = CurrencyFormatterMode::UseCurrencyCode;
+    m_currencyFormatter2->ApplyRoundingForCurrency(RoundingAlgorithm::RoundHalfDown);
+
+    UpdateIsDecimalEnabled();
+
+    OnPaste(ref new String(TruncateFractionDigits(m_valueFromUnlocalized, CurrencyFormatterFrom->FractionDigits).data()));
+}
+
+void UnitConverterViewModel::UpdateIsDecimalEnabled()
+{
+    if (!IsCurrencyCurrentCategory || CurrencyFormatterFrom == nullptr)
+        return;
+    IsDecimalEnabled = CurrencyFormatterFrom->FractionDigits > 0;
+}
+
 NumbersAndOperatorsEnum UnitConverterViewModel::MapCharacterToButtonId(const wchar_t ch, bool& canSendNegate)
 {
     static_assert(NumbersAndOperatorsEnum::Zero < NumbersAndOperatorsEnum::One, "NumbersAndOperatorsEnum order is invalid");
@@ -934,14 +1001,19 @@ void UnitConverterViewModel::OnPaste(String ^ stringToPaste)
     }
 }
 
-String ^ UnitConverterViewModel::GetLocalizedAutomationName(_In_ String ^ displayvalue, _In_ String ^ unitname, _In_ String ^ format)
+String
+    ^ UnitConverterViewModel::GetLocalizedAutomationName(
+        _In_ String ^ displayvalue,
+        _In_ String ^ unitname,
+        _In_ String ^ format,
+        _In_ CurrencyFormatterParameter cfp)
 {
     String ^ valueToLocalize = displayvalue;
     if (displayvalue == ValueFrom && Utils::IsLastCharacterTarget(m_valueFromUnlocalized, m_decimalSeparator))
     {
         // Need to compute a second localized value for the automation
         // name that does not include the decimal separator.
-        displayvalue = ConvertToLocalizedString(m_valueFromUnlocalized, false /*allowTrailingDecimal*/);
+        displayvalue = ConvertToLocalizedString(m_valueFromUnlocalized, false /*allowTrailingDecimal*/, cfp);
         format = m_localizedValueFromDecimalFormat;
     }
 
@@ -962,7 +1034,7 @@ void UnitConverterViewModel::UpdateValue1AutomationName()
 {
     if (Unit1)
     {
-        Value1AutomationName = GetLocalizedAutomationName(Value1, Unit1->AccessibleName, m_localizedValueFromFormat);
+        Value1AutomationName = GetLocalizedAutomationName(Value1, Unit1->AccessibleName, m_localizedValueFromFormat, CurrencyFormatterParameter::ForValue1);
     }
 }
 
@@ -970,7 +1042,7 @@ void UnitConverterViewModel::UpdateValue2AutomationName()
 {
     if (Unit2)
     {
-        Value2AutomationName = GetLocalizedAutomationName(Value2, Unit2->AccessibleName, m_localizedValueToFormat);
+        Value2AutomationName = GetLocalizedAutomationName(Value2, Unit2->AccessibleName, m_localizedValueToFormat, CurrencyFormatterParameter::ForValue1);
     }
 }
 

src/CalcViewModel/UnitConverterViewModel.h

@@ -227,8 +227,19 @@ namespace CalculatorApp
             void OnCopyCommand(Platform::Object ^ parameter);
             void OnPasteCommand(Platform::Object ^ parameter);
 
+            enum class CurrencyFormatterParameter
+            {
+                Default,
+                ForValue1,
+                ForValue2,
+            };
+
             Platform::String
-                ^ GetLocalizedAutomationName(_In_ Platform::String ^ displayvalue, _In_ Platform::String ^ unitname, _In_ Platform::String ^ format);
+                ^ GetLocalizedAutomationName(
+                    _In_ Platform::String ^ displayvalue,
+                    _In_ Platform::String ^ unitname,
+                    _In_ Platform::String ^ format,
+                    _In_ CurrencyFormatterParameter cfp);
             Platform::String
                 ^ GetLocalizedConversionResultStringFormat(
                     _In_ Platform::String ^ fromValue,
@@ -276,11 +287,13 @@ namespace CalculatorApp
             void SupplementaryResultsTimerCancel(Windows::System::Threading::ThreadPoolTimer ^ timer);
             void RefreshSupplementaryResults();
             void UpdateInputBlocked(_In_ const std::wstring& currencyInput);
+            void UpdateCurrencyFormatter();
+            void UpdateIsDecimalEnabled();
             bool UnitsAreValid();
             void ResetCategory();
 
             void OnButtonPressed(Platform::Object ^ parameter);
-            Platform::String ^ ConvertToLocalizedString(const std::wstring& stringToLocalize, bool allowPartialStrings);
+            Platform::String ^ ConvertToLocalizedString(const std::wstring& stringToLocalize, bool allowPartialStrings, CurrencyFormatterParameter cfp);
 
             std::shared_ptr<UnitConversionManager::IUnitConverter> m_model;
             wchar_t m_decimalSeparator;
@@ -290,6 +303,34 @@ namespace CalculatorApp
                 Source,
                 Target
             } m_value1cp;
+            property CurrencyFormatterParameter CurrencyFormatterParameterFrom
+            {
+                CurrencyFormatterParameter get()
+                {
+                    return m_value1cp == ConversionParameter::Source ? CurrencyFormatterParameter::ForValue1 : CurrencyFormatterParameter::ForValue2;
+                }
+            }
+            property CurrencyFormatterParameter CurrencyFormatterParameterTo
+            {
+                CurrencyFormatterParameter get()
+                {
+                    return m_value1cp == ConversionParameter::Target ? CurrencyFormatterParameter::ForValue1 : CurrencyFormatterParameter::ForValue2;
+                }
+            }
+            property Windows::Globalization::NumberFormatting::CurrencyFormatter^ CurrencyFormatterFrom
+            {
+                Windows::Globalization::NumberFormatting::CurrencyFormatter^ get()
+                {
+                    return m_value1cp == ConversionParameter::Source ? m_currencyFormatter1 : m_currencyFormatter2;
+                }
+            }
+            property Windows::Globalization::NumberFormatting::CurrencyFormatter^ CurrencyFormatterTo
+            {
+                Windows::Globalization::NumberFormatting::CurrencyFormatter^ get()
+                {
+                    return m_value1cp == ConversionParameter::Target ? m_currencyFormatter1 : m_currencyFormatter2;
+                }
+            }
             property Platform::String^ ValueFrom
             {
                 Platform::String^ get() { return m_value1cp == ConversionParameter::Source ? Value1 : Value2; }
@@ -323,7 +364,8 @@ namespace CalculatorApp
             std::mutex m_cacheMutex;
             Windows::Globalization::NumberFormatting::DecimalFormatter ^ m_decimalFormatter;
             Windows::Globalization::NumberFormatting::CurrencyFormatter ^ m_currencyFormatter;
-            int m_currencyMaxFractionDigits;
+            Windows::Globalization::NumberFormatting::CurrencyFormatter ^ m_currencyFormatter1;
+            Windows::Globalization::NumberFormatting::CurrencyFormatter ^ m_currencyFormatter2;
             std::wstring m_valueFromUnlocalized;
             std::wstring m_valueToUnlocalized;
             bool m_relocalizeStringOnSwitch;

src/Calculator/AboutFlyout.xaml

@@ -14,6 +14,7 @@
         <Grid.RowDefinitions>
             <RowDefinition Height="Auto"/>
             <RowDefinition Height="Auto"/>
+            <RowDefinition Height="Auto"/>
         </Grid.RowDefinitions>
         <Grid.ColumnDefinitions>
             <ColumnDefinition Width="Auto"/>
@@ -72,5 +73,21 @@
                     Click="FeedbackButton_Click"/>
 
         </StackPanel>
+        <RichTextBlock x:Name="AboutFlyoutContribute"
+                       Grid.Row="2"
+                       Grid.ColumnSpan="2"
+                       Margin="12,18,12,6"
+                       HorizontalAlignment="Left"
+                       Foreground="{ThemeResource SystemControlPageTextBaseHighBrush}"
+                       FontSize="{ThemeResource BodyFontSize}"
+                       TextWrapping="Wrap">
+            <Paragraph>
+                <Run x:Name="ContributeRunBeforeLink"/><Hyperlink NavigateUri="https://go.microsoft.com/fwlink/?linkid=2099939"
+                           TextDecorations="None"
+                           ToolTipService.ToolTip="https://go.microsoft.com/fwlink/?linkid=2099939">
+                    <Run x:Name="ContributeRunLink"/>
+                </Hyperlink><Run x:Name="ContributeRunAfterLink"/>
+            </Paragraph>
+        </RichTextBlock>
     </Grid>
 </UserControl>

src/Calculator/AboutFlyout.xaml.cpp

@@ -40,6 +40,8 @@ AboutFlyout::AboutFlyout()
     auto copyrightText =
         LocalizationStringUtil::GetLocalizedString(resourceLoader->GetResourceString("AboutControlCopyright"), StringReference(to_wstring(BUILD_YEAR).c_str()));
     AboutControlCopyrightRun->Text = copyrightText;
+
+    InitializeContributeTextBlock();
 }
 
 void AboutFlyout::FeedbackButton_Click(_In_ Object ^ sender, _In_ RoutedEventArgs ^ e)
@@ -61,3 +63,30 @@ void AboutFlyout::SetDefaultFocus()
 {
     AboutFlyoutEULA->Focus(::FocusState::Programmatic);
 }
+
+void AboutFlyout::InitializeContributeTextBlock()
+{
+    auto resProvider = AppResourceProvider::GetInstance();
+    std::wstring contributeHyperlinkText = resProvider->GetResourceString(L"AboutFlyoutContribute")->Data();
+
+    // The resource string has the 'GitHub' hyperlink wrapped with '%HL%'.
+    // Break the string and assign pieces appropriately.
+    static const std::wstring delimiter{ L"%HL%" };
+    static const size_t delimiterLength{ delimiter.length() };
+
+    // Find the delimiters.
+    size_t firstSplitPosition = contributeHyperlinkText.find(delimiter, 0);
+    assert(firstSplitPosition != std::wstring::npos);
+    size_t secondSplitPosition = contributeHyperlinkText.find(delimiter, firstSplitPosition + 1);
+    assert(secondSplitPosition != std::wstring::npos);
+    size_t hyperlinkTextLength = secondSplitPosition - (firstSplitPosition + delimiterLength);
+
+    // Assign pieces.
+    auto contributeTextBeforeHyperlink = ref new String(contributeHyperlinkText.substr(0, firstSplitPosition).c_str());
+    auto contributeTextLink = ref new String(contributeHyperlinkText.substr(firstSplitPosition + delimiterLength, hyperlinkTextLength).c_str());
+    auto contributeTextAfterHyperlink = ref new String(contributeHyperlinkText.substr(secondSplitPosition + delimiterLength).c_str());
+
+    ContributeRunBeforeLink->Text = contributeTextBeforeHyperlink;
+    ContributeRunLink->Text = contributeTextLink;
+    ContributeRunAfterLink->Text = contributeTextAfterHyperlink;
+}

src/Calculator/AboutFlyout.xaml.h

@@ -18,5 +18,6 @@ public
     private:
         void FeedbackButton_Click(_In_ Platform::Object ^ sender, _In_ Windows::UI::Xaml::RoutedEventArgs ^ e);
         void SetVersionString();
+        void InitializeContributeTextBlock();
     };
 } /* namespace CalculatorApp */

src/Calculator/Resources/en-US/Resources.resw

@@ -2717,6 +2717,10 @@
     <value>© %1 Microsoft. All rights reserved.</value>
     <comment>{Locked="%1"}. Copyright statement, displayed on the About panel. %1 = the current year (4 digits)</comment>
   </data>
+  <data name="AboutFlyoutContribute" xml:space="preserve">
+    <value>To learn how you can contribute to Windows Calculator, check out the project on %HL%GitHub%HL%.</value>
+    <comment>{Locked="%HL%GitHub%HL%"}. GitHub link, Displayed on the About panel</comment>
+  </data>
   <data name="AboutButton.Content" xml:space="preserve">
     <value>About</value>
     <comment>The text that shows in the dropdown navigation control to open About panel</comment>

src/Calculator/Resources/zh-CN/Resources.resw

@@ -3392,15 +3392,15 @@
     <comment>Error displayed when parity is cannot be determined</comment>
   </data>
   <data name="KGFParityEven" xml:space="preserve">
-    <value>此函数为偶数。</value>
+    <value>此函数为偶函数。</value>
     <comment>Message displayed with the function parity is even</comment>
   </data>
   <data name="KGFParityNeither" xml:space="preserve">
-    <value>此函数既不是偶数也不是奇数。</value>
+    <value>此函数既不是偶函数也不是奇函数。</value>
     <comment>Message displayed with the function parity is neither even nor odd</comment>
   </data>
   <data name="KGFParityOdd" xml:space="preserve">
-    <value>函数为奇数。</value>
+    <value>此函数为奇函数。</value>
     <comment>Message displayed with the function parity is odd</comment>
   </data>
   <data name="KGFParityUnknown" xml:space="preserve">

src/Calculator/Views/MainPage.xaml

@@ -28,6 +28,7 @@
         <Style x:Key="AboutFlyoutPresenterStyle" TargetType="FlyoutPresenter">
             <Setter Property="IsTabStop" Value="False"/>
             <Setter Property="AutomationProperties.AccessibilityView" Value="Raw"/>
+            <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Disabled"/>
         </Style>
         <Style x:Key="NavViewItemStyle" TargetType="muxc:NavigationViewItem">
             <Setter Property="KeyTipPlacementMode" Value="Right"/>
@@ -174,18 +175,18 @@
 
             <muxc:NavigationView.PaneFooter>
                 <muxc:NavigationViewItem x:Name="AboutButton"
-                                                     x:Uid="AboutButton"
+                                         x:Uid="AboutButton"
-                                                     Style="{StaticResource NavViewItemStyle}"
+                                         Style="{StaticResource NavViewItemStyle}"
-                                             Tapped="OnAboutButtonClick">
+                                         Tapped="OnAboutButtonClick">
                     <muxc:NavigationViewItem.Icon>
                         <FontIcon FontFamily="{StaticResource CalculatorFontFamily}" Glyph="&#xe946;"/>
                     </muxc:NavigationViewItem.Icon>
                     <FlyoutBase.AttachedFlyout>
                         <Flyout x:Name="AboutPageFlyout"
-                                            x:Uid="AboutPageFlyout"
+                                x:Uid="AboutPageFlyout"
-                                            Closed="OnAboutFlyoutClosed"
+                                Closed="OnAboutFlyoutClosed"
-                                            FlyoutPresenterStyle="{StaticResource AboutFlyoutPresenterStyle}"
+                                FlyoutPresenterStyle="{StaticResource AboutFlyoutPresenterStyle}"
-                                            Opened="OnAboutFlyoutOpened">
+                                Opened="OnAboutFlyoutOpened">
                             <local:AboutFlyout x:Name="AboutPage" x:Load="False"/>
                         </Flyout>
                     </FlyoutBase.AttachedFlyout>

src/Calculator/Views/TitleBar.xaml

@@ -27,7 +27,6 @@
             </VisualStateGroup>
         </VisualStateManager.VisualStateGroups>
         <Grid x:Name="BackgroundElement"
-              Height="32"
               Background="Transparent">
             <TextBlock x:Name="AppName"
                        x:Uid="AppName"
@@ -36,7 +35,6 @@
                        VerticalAlignment="Center"
                        Foreground="{ThemeResource TitleBarForegroundBaseHighBrush}"
                        FontSize="12"
-                       TextAlignment="Left"
                        TextTrimming="CharacterEllipsis"/>
         </Grid>
         <Button x:Name="ExitAlwaysOnTopButton"

src/Calculator/Views/TitleBar.xaml.cpp

@@ -11,6 +11,7 @@ using namespace Platform;
 using namespace Windows::ApplicationModel;
 using namespace Windows::ApplicationModel::Core;
 using namespace Windows::Foundation;
+using namespace Windows::System::Profile;
 using namespace Windows::UI;
 using namespace Windows::UI::Core;
 using namespace Windows::UI::ViewManagement;
@@ -45,13 +46,13 @@ namespace CalculatorApp
 
     void TitleBar::OnLoaded(_In_ Object ^ /*sender*/, _In_ RoutedEventArgs ^ /*e*/)
     {
+        auto that(this);
         // Register events
         m_visibilityChangedToken = m_coreTitleBar->IsVisibleChanged += ref new TypedEventHandler<CoreApplicationViewTitleBar ^, Object ^>(
-            [this](CoreApplicationViewTitleBar ^ cTitleBar, Object ^) { this->SetTitleBarVisibility(); });
+            [that](CoreApplicationViewTitleBar ^ cTitleBar, Object ^) { that->SetTitleBarVisibility(false); });
         m_layoutChangedToken = m_coreTitleBar->LayoutMetricsChanged +=
-            ref new TypedEventHandler<CoreApplicationViewTitleBar ^, Object ^>([this](CoreApplicationViewTitleBar ^ cTitleBar, Object ^) {
+            ref new TypedEventHandler<CoreApplicationViewTitleBar ^, Object ^>([that](CoreApplicationViewTitleBar ^ cTitleBar, Object ^) {
-                this->SetTitleBarHeight();
+                that->SetTitleBarHeightAndPadding();
-                this->SetTitleBarPadding();
             });
 
         m_colorValuesChangedToken = m_uiSettings->ColorValuesChanged += ref new TypedEventHandler<UISettings ^, Object ^>(this, &TitleBar::ColorValuesChanged);
@@ -60,10 +61,15 @@ namespace CalculatorApp
         m_windowActivatedToken = Window::Current->Activated +=
             ref new Windows::UI::Xaml::WindowActivatedEventHandler(this, &CalculatorApp::TitleBar::OnWindowActivated);
         // Set properties
-        this->SetTitleBarHeight();
+        SetTitleBarControlColors();
-        this->SetTitleBarControlColors();
+        SetTitleBarHeightAndPadding();
-        this->SetTitleBarVisibility();
+
-        this->SetTitleBarPadding();
+        // As of Windows 10 1903: when an app runs on a PC (without Tablet mode activated)
+        // properties of CoreApplicationViewTitleBar aren't initialized during the first seconds after launch.
+        auto forceDisplay = AnalyticsInfo::VersionInfo->DeviceFamily == L"Windows.Desktop"
+                            && UIViewSettings::GetForCurrentView()->UserInteractionMode == UserInteractionMode::Mouse;
+
+        SetTitleBarVisibility(forceDisplay);
     }
 
     void TitleBar::OnUnloaded(_In_ Object ^ /*sender*/, _In_ RoutedEventArgs ^ /*e*/)
@@ -81,18 +87,20 @@ namespace CalculatorApp
         m_windowActivatedToken.Value = 0;
     }
 
-    void TitleBar::SetTitleBarVisibility()
+    void TitleBar::SetTitleBarVisibility(bool forceDisplay)
     {
-        this->LayoutRoot->Visibility = m_coreTitleBar->IsVisible || IsAlwaysOnTopMode ? ::Visibility::Visible : ::Visibility::Collapsed;
+        this->LayoutRoot->Visibility =
+            forceDisplay || m_coreTitleBar->IsVisible || IsAlwaysOnTopMode ? ::Visibility::Visible : ::Visibility::Collapsed;
     }
 
-    void TitleBar::SetTitleBarHeight()
+    void TitleBar::SetTitleBarHeightAndPadding()
     {
-        this->LayoutRoot->Height = m_coreTitleBar->Height;
+        if (m_coreTitleBar->Height == 0)
-    }
+        {
+            // The titlebar isn't init
+            return;
+        }
 
-    void TitleBar::SetTitleBarPadding()
-    {
         double leftAddition = 0;
         double rightAddition = 0;
 
@@ -108,11 +116,13 @@ namespace CalculatorApp
         }
 
         this->LayoutRoot->Padding = Thickness(leftAddition, 0, rightAddition, 0);
+        this->LayoutRoot->Height = m_coreTitleBar->Height;
     }
 
     void TitleBar::ColorValuesChanged(_In_ UISettings ^ /*sender*/, _In_ Object ^ /*e*/)
     {
-        Dispatcher->RunAsync(CoreDispatcherPriority::Normal, ref new DispatchedHandler([this]() { SetTitleBarControlColors(); }));
+        auto that(this);
+        Dispatcher->RunAsync(CoreDispatcherPriority::Normal, ref new DispatchedHandler([that]() { that->SetTitleBarControlColors(); }));
     }
 
     void TitleBar::SetTitleBarControlColors()
@@ -164,9 +174,10 @@ namespace CalculatorApp
 
     void TitleBar::OnHighContrastChanged(_In_ AccessibilitySettings ^ /*sender*/, _In_ Object ^ /*args*/)
     {
-        Dispatcher->RunAsync(CoreDispatcherPriority::Normal, ref new DispatchedHandler([this]() {
+        auto that(this);
-                                 SetTitleBarControlColors();
+        Dispatcher->RunAsync(CoreDispatcherPriority::Normal, ref new DispatchedHandler([that]() {
-                                 SetTitleBarVisibility();
+                                 that->SetTitleBarControlColors();
+                                 that->SetTitleBarVisibility(false);
                              }));
     }
 
@@ -178,7 +189,7 @@ namespace CalculatorApp
 
     void TitleBar::OnIsAlwaysOnTopModePropertyChanged(bool /*oldValue*/, bool newValue)
     {
-        SetTitleBarVisibility();
+        SetTitleBarVisibility(false);
         VisualStateManager::GoToState(this, newValue ? "AOTMiniState" : "AOTNormalState", false);
     }
 

src/Calculator/Views/TitleBar.xaml.h

@@ -27,9 +27,8 @@ public
         void OnLoaded(_In_ Object ^ sender, Windows::UI::Xaml::RoutedEventArgs ^ e);
         void OnUnloaded(_In_ Object ^ sender, Windows::UI::Xaml::RoutedEventArgs ^ e);
 
-        void SetTitleBarVisibility();
+        void SetTitleBarVisibility(bool forceDisplay);
-        void SetTitleBarHeight();
+        void SetTitleBarHeightAndPadding();
-        void SetTitleBarPadding();
         void SetTitleBarControlColors();
         void ColorValuesChanged(_In_ Windows::UI::ViewManagement::UISettings ^ sender, _In_ Platform::Object ^ e);
         void OnHighContrastChanged(Windows::UI::ViewManagement::AccessibilitySettings ^ sender, Platform::Object ^ args);

src/CalculatorUITestFramework/CalculatorApp.cs

@@ -35,6 +35,14 @@ namespace CalculatorUITestFramework
             AppName.Click();
         }
 
+        /// <summary>
+        /// Click the window (to lose focus on components)
+        /// </summary>
+        public static void ClickOnWindow()
+        {
+            Window.Click();
+        }
+
         /// <summary>
         /// If the the Dock Panel for the History and Memory lists is not displayed, resize the window
         /// Two attempts are made, the the lable is not found a "not found" exception is thrown

src/CalculatorUITestFramework/UnitConverterOperatorsPanel.cs

@@ -13,5 +13,7 @@ namespace CalculatorUITestFramework
         public NumberPad NumberPad = new NumberPad();
         public WindowsElement ClearButton => this.session.TryFindElementByAccessibilityId("ClearEntryButtonPos0");
         public WindowsElement BackSpaceButton => this.session.TryFindElementByAccessibilityId("BackSpaceButtonSmall");
+        public WindowsElement Units1 => this.session.TryFindElementByAccessibilityId("Units1");
+        public WindowsElement Units2 => this.session.TryFindElementByAccessibilityId("Units2");
     }
 }

src/CalculatorUITestFramework/UnitConverterPage.cs

@@ -64,5 +64,44 @@ namespace CalculatorUITestFramework
             }
         }
 
+        /// <summary>
+        /// Ensure Units1 and Units2 are the same 
+        /// </summary>
+        public void EnsureSameUnitsAreSelected()
+        {
+            CalculatorApp.ClickOnWindow();
+            UnitConverterOperators.Units1.SendKeys(OpenQA.Selenium.Keys.Home);
+            UnitConverterOperators.Units1.SendKeys(OpenQA.Selenium.Keys.Enter);
+
+            CalculatorApp.ClickOnWindow();
+            UnitConverterOperators.Units2.SendKeys(OpenQA.Selenium.Keys.Home);
+            UnitConverterOperators.Units2.SendKeys(OpenQA.Selenium.Keys.Enter);
+
+            CalculatorApp.ClickOnWindow();
+        }
+
+        /// <summary>
+        /// Select value in Units1 ComboBox
+        /// </summary>
+        /// <param name="value">Value in ComboBox Units1</param>
+        public void SelectUnits1(string value)
+        {
+            CalculatorApp.ClickOnWindow();
+            UnitConverterOperators.Units1.SendKeys(value);
+            UnitConverterOperators.Units1.SendKeys(OpenQA.Selenium.Keys.Enter);
+            CalculatorApp.ClickOnWindow();
+        }
+
+        /// <summary>
+        /// Select value in Units2 ComboBox
+        /// </summary>
+        /// <param name="value">Value in ComboBox Units2</param>
+        public void SelectUnits2(string value)
+        {
+            CalculatorApp.ClickOnWindow();
+            UnitConverterOperators.Units2.SendKeys(value);
+            UnitConverterOperators.Units2.SendKeys(OpenQA.Selenium.Keys.Enter);
+            CalculatorApp.ClickOnWindow();
+        }
     }
 }

src/CalculatorUITests/CalculatorUITests.ci.runsettings

@@ -8,5 +8,7 @@
     </DataCollectionRunSettings>
     <TestRunParameters>
         <Parameter Name="AppId" Value="Microsoft.WindowsCalculator.Dev_8wekyb3d8bbwe!App" />
+        <Parameter Name="CurrencyWith3FractionalDigits" Value="Test Fractional Digits - Test Fractional Digits" />
+        <Parameter Name="CurrencyWithoutFractionalDigits" Value="Test No Fractional Digits - Test No Fractional Digits" />
     </TestRunParameters>
 </RunSettings>

src/CalculatorUITests/CalculatorUITests.release.runsettings

@@ -8,5 +8,7 @@
     </DataCollectionRunSettings>
     <TestRunParameters>
         <Parameter Name="AppId" Value="Microsoft.WindowsCalculator_8wekyb3d8bbwe!App" />
+        <Parameter Name="CurrencyWith3FractionalDigits" Value="Jordan - Dinar" />
+        <Parameter Name="CurrencyWithoutFractionalDigits" Value="Japan - Yen" />
     </TestRunParameters>
 </RunSettings>

src/CalculatorUITests/CurrencyConverterFunctionalTests.cs

@@ -12,6 +12,8 @@ namespace CalculatorUITests
     {
         private static UnitConverterPage page = new UnitConverterPage();
 
+        public TestContext TestContext { get; set; }
+
         /// <summary>
         /// Initializes the WinAppDriver web driver session.
         /// </summary>
@@ -42,6 +44,7 @@ namespace CalculatorUITests
             CalculatorApp.EnsureCalculatorHasFocus();
             page.EnsureCalculatorIsCurrencyMode();
             page.EnsureCalculatorResultTextIsZero();
+            page.EnsureSameUnitsAreSelected();
         }
 
         [TestCleanup]
@@ -50,6 +53,23 @@ namespace CalculatorUITests
             page.ClearAll();
         }
 
+        private string NormalizeCurrencyText(string realValue, int fractionDigits)
+        {
+            if (!realValue.Contains('.')) return realValue;
+
+            var parts = realValue.Split('.');
+            if (parts[1].Length < fractionDigits)
+            {
+                parts[1] += new string('0', fractionDigits - parts[1].Length);
+            }
+            else
+            {
+                parts[1] = parts[1].Substring(0, fractionDigits);
+            }
+
+            return $"{parts[0]}.{parts[1]}".TrimEnd('.');
+        }
+
         #region Basic UI Functionality via Mouse Input Tests
         /// <summary>
         /// These automated tests verify clicking each of the buttons in the Calculator UI and getting an expected result
@@ -129,6 +149,153 @@ namespace CalculatorUITests
             Assert.AreEqual("0", page.UnitConverterResults.GetCalculationResult2Text()); //verifies Backspace button clicks
         }
 
+        /// <summary>
+        /// These automated tests verify the currency has been formatted to 3 fractional digits
+        /// Via mouse input, all basic UI functionality is checked 
+        /// </summary>
+        [TestMethod]
+        [Priority(0)]
+        public void MouseInput_SelectCurrencyWith3FractionalDigitsEnterInputAndCheckTheFormat()
+        {
+            var currency = (string)TestContext.Properties["CurrencyWith3FractionalDigits"];
+            var fractionDigits = 3;
+
+            //Verifies fraction digits in given currency
+            page.SelectUnits1(currency);
+            Assert.AreEqual(currency.Replace(" - ", " "), page.UnitConverterOperators.Units1.Text); // Text is the AccessibleName of Unit
+            page.UnitConverterOperators.NumberPad.Num2Button.Click();
+            Assert.AreEqual(NormalizeCurrencyText("2", fractionDigits), page.UnitConverterResults.GetCalculationResult1Text()); //verifies 2 button
+            page.UnitConverterOperators.NumberPad.DecimalButton.Click();
+            Assert.AreEqual(NormalizeCurrencyText("2.", fractionDigits), page.UnitConverterResults.GetCalculationResult1Text()); //verifies decimal button
+            page.UnitConverterOperators.NumberPad.Num4Button.Click();
+            Assert.AreEqual(NormalizeCurrencyText("2.4", fractionDigits), page.UnitConverterResults.GetCalculationResult1Text()); //verifies 4 button
+            page.UnitConverterOperators.NumberPad.Num3Button.Click();
+            Assert.AreEqual(NormalizeCurrencyText("2.43", fractionDigits), page.UnitConverterResults.GetCalculationResult1Text()); //verifies 3 button
+            page.UnitConverterOperators.NumberPad.Num5Button.Click();
+            Assert.AreEqual(NormalizeCurrencyText("2.435", fractionDigits), page.UnitConverterResults.GetCalculationResult1Text()); //verifies 5 button
+            page.UnitConverterOperators.NumberPad.Num6Button.Click();
+            Assert.AreEqual(NormalizeCurrencyText("2.4356", fractionDigits), page.UnitConverterResults.GetCalculationResult1Text()); //verifies 6 button
+        }
+
+        /// <summary>
+        /// These automated tests verify the currency has been formatted to no fractional digit
+        /// Via mouse input, all basic UI functionality is checked 
+        /// </summary>
+        [TestMethod]
+        [Priority(0)]
+        public void MouseInput_SelectCurrencyWithoutFractionalDigitEnterInputAndCheckTheFormat()
+        {
+            var currency = (string)TestContext.Properties["CurrencyWithoutFractionalDigits"];
+            var fractionDigits = 0;
+
+            //Verifies fraction digits in given currency
+            page.SelectUnits1(currency);
+            Assert.AreEqual(currency.Replace(" - ", " "), page.UnitConverterOperators.Units1.Text); // Text is the AccessibleName of Unit
+            page.UnitConverterOperators.NumberPad.Num2Button.Click();
+            Assert.AreEqual(NormalizeCurrencyText("2", fractionDigits), page.UnitConverterResults.GetCalculationResult1Text()); //verifies 2 button
+            page.UnitConverterOperators.NumberPad.DecimalButton.Click(); // It should be disabled, so no decimal will be displayed
+            Assert.AreEqual(NormalizeCurrencyText("2", fractionDigits), page.UnitConverterResults.GetCalculationResult1Text()); //verifies decimal button
+            page.UnitConverterOperators.NumberPad.Num4Button.Click(); // As decimal is disabled, 4 won't be part of fraction digits
+            Assert.AreEqual(NormalizeCurrencyText("24", fractionDigits), page.UnitConverterResults.GetCalculationResult1Text()); //verifies 4 button
+        }
+
+        /// <summary>
+        /// These automated tests verify the currency format is updated after switching
+        /// Via mouse input, all basic UI functionality is checked 
+        /// </summary>
+        [TestMethod]
+        [Priority(0)]
+        public void MouseInput_SwitchCurrencyWithDifferentFractionalDigitsAndCheckTheFormat()
+        {
+            var currencyWith3FractionalDigits = (string)TestContext.Properties["CurrencyWith3FractionalDigits"];
+            var currencyWithoutFractionalDigits = (string)TestContext.Properties["CurrencyWithoutFractionalDigits"];
+
+            //Verifies fraction digits in given currency
+            page.SelectUnits1(currencyWith3FractionalDigits);
+            page.UnitConverterOperators.NumberPad.Num2Button.Click();
+            page.UnitConverterOperators.NumberPad.DecimalButton.Click();
+            page.UnitConverterOperators.NumberPad.Num4Button.Click();
+            page.UnitConverterOperators.NumberPad.Num3Button.Click();
+            page.UnitConverterOperators.NumberPad.Num5Button.Click();
+            Assert.AreEqual("2.435", page.UnitConverterResults.GetCalculationResult1Text());
+
+            page.SelectUnits1(currencyWithoutFractionalDigits);
+            Assert.AreEqual("2", page.UnitConverterResults.GetCalculationResult1Text());
+
+            // The digits will be truncated forever, even if swiching back
+            page.SelectUnits1(currencyWith3FractionalDigits);
+            Assert.AreEqual("2", page.UnitConverterResults.GetCalculationResult1Text());
+        }
+
+        /// <summary>
+        /// These automated tests verify input is not blocked after swiching to currency with less fractional digits
+        /// Via mouse input, all basic UI functionality is checked 
+        /// </summary>
+        [TestMethod]
+        [Priority(0)]
+        public void MouseInput_SwitchCurrencyWithLessFractionalDigitsAndEnterInput()
+        {
+            var currencyWith3FractionalDigits = (string)TestContext.Properties["CurrencyWith3FractionalDigits"];
+            var currencyWithoutFractionalDigits = (string)TestContext.Properties["CurrencyWithoutFractionalDigits"];
+
+            //Verifies fraction digits in given currency
+            page.SelectUnits1(currencyWith3FractionalDigits);
+            page.UnitConverterOperators.NumberPad.Num2Button.Click();
+            page.UnitConverterOperators.NumberPad.DecimalButton.Click();
+            page.UnitConverterOperators.NumberPad.Num4Button.Click();
+            page.UnitConverterOperators.NumberPad.Num3Button.Click();
+            page.UnitConverterOperators.NumberPad.Num5Button.Click();
+            Assert.AreEqual("2.435", page.UnitConverterResults.GetCalculationResult1Text());
+
+            page.SelectUnits1(currencyWithoutFractionalDigits);
+            Assert.AreEqual("2", page.UnitConverterResults.GetCalculationResult1Text());
+
+            page.UnitConverterOperators.NumberPad.Num4Button.Click(); // Enter new number will replace the previous value
+            Assert.AreEqual("4", page.UnitConverterResults.GetCalculationResult1Text());
+
+            page.SelectUnits1(currencyWith3FractionalDigits);
+            Assert.AreEqual("4", page.UnitConverterResults.GetCalculationResult1Text());
+        }
+
+        /// <summary>
+        /// These automated tests verify the result consists after swiching currency
+        /// Via mouse input, all basic UI functionality is checked 
+        /// </summary>
+        [TestMethod]
+        [Priority(0)]
+        public void MouseInput_SwitchCurrencyWithLessFractionalDigitsAndCheckIfTheResultIsConsistent()
+        {
+            var currencyWith3FractionalDigits = (string)TestContext.Properties["CurrencyWith3FractionalDigits"];
+            var currencyWithoutFractionalDigits = (string)TestContext.Properties["CurrencyWithoutFractionalDigits"];
+
+            page.SelectUnits1(currencyWith3FractionalDigits);
+            page.SelectUnits2(currencyWith3FractionalDigits);
+
+            page.UnitConverterOperators.NumberPad.Num2Button.Click();
+            page.UnitConverterOperators.NumberPad.Num0Button.Click();
+            page.UnitConverterOperators.NumberPad.Num0Button.Click();
+            page.UnitConverterOperators.NumberPad.DecimalButton.Click();
+            page.UnitConverterOperators.NumberPad.Num9Button.Click();
+            page.UnitConverterOperators.NumberPad.Num9Button.Click();
+            page.UnitConverterOperators.NumberPad.Num9Button.Click();
+
+            Assert.AreEqual("200.999", page.UnitConverterResults.GetCalculationResult1Text());
+            Assert.AreEqual("200.999", page.UnitConverterResults.GetCalculationResult2Text());
+
+            page.SelectUnits1(currencyWithoutFractionalDigits);
+            Assert.AreEqual("200", page.UnitConverterResults.GetCalculationResult1Text());
+            var result = page.UnitConverterResults.GetCalculationResult2Text();
+
+            page.UnitConverterOperators.ClearButton.Click();
+
+            page.UnitConverterOperators.NumberPad.Num2Button.Click();
+            page.UnitConverterOperators.NumberPad.Num0Button.Click();
+            page.UnitConverterOperators.NumberPad.Num0Button.Click();
+
+            Assert.AreEqual("200", page.UnitConverterResults.GetCalculationResult1Text());
+            Assert.AreEqual(result, page.UnitConverterResults.GetCalculationResult2Text());
+        }
+
         #endregion
     }
 }

src/CalculatorUnitTests/CopyPasteManagerTest.cpp

@@ -825,9 +825,13 @@ namespace CalculatorUnitTests
                                      L"12^2",
                                      L"-12.12^-2",
                                      L"61%99"
-                                     L"-6.1%99" };
+                                     L"-6.1%99",
+                                     L"1.1111111111111111111111111111111e+1142" };
         String
             ^ negativeInput[] = { L"abcdef", L"xyz",   L"ABab", L"e+234", L"123456789123456781234567890123456" /*boundary condition: greater than 32 digits*/,
+                                  L"11.1111111111111111111111111111111e+1142",
+                                  L"1.1e+10001", /*boundary condition: exponent greater than 5 digits*/
+                                  L"0.11111111111111111111111111111111111e+111111" /*boundary condition: both exponent and non exponent exceed limits*/
                                   L"SIN(2)", L"2+2==", L"2=+2" };
 
         ASSERT_POSITIVE_TESTCASES(ValidateScientificPasteExpression, positiveInput);

src/CalculatorUnitTests/MultiWindowUnitTests.cpp

@@ -685,7 +685,7 @@ TEST_METHOD(InitializeMultipleConverterTest)
         viewModels[i] = ref new UnitConverterViewModel(unitConverterMocks[i]);
         IObservableVector<Category ^> ^ cats = viewModels[i]->Categories;
         VERIFY_ARE_EQUAL((UINT)1, unitConverterMocks[i]->m_getCategoriesCallCount);
-        VERIFY_ARE_EQUAL((UINT)3, cats->Size);
+        VERIFY_ARE_EQUAL((UINT)4, cats->Size);
         // Verify that we match current category
         VERIFY_IS_TRUE(CAT2 == viewModels[i]->CurrentCategory->GetModelCategory());
     }
@@ -697,7 +697,7 @@ TEST_METHOD(InitializeMultipleConverterTest)
     // Verify that the instance properties were set independently
     for (int i = 0; i < 2; i++)
     {
-        VERIFY_ARE_EQUAL((UINT)3, viewModels[i]->Categories->Size);
+        VERIFY_ARE_EQUAL((UINT)4, viewModels[i]->Categories->Size);
         VERIFY_ARE_EQUAL((UINT)3, viewModels[i]->Units->Size);
     }
 

src/CalculatorUnitTests/UnitConverterViewModelUnitTests.cpp

@@ -140,6 +140,7 @@ vector<UCM::Category> UnitConverterMock::GetCategories()
     cats.push_back(CAT1);
     cats.push_back(CAT2);
     cats.push_back(CAT3);
+    cats.push_back(CAT_CURRENCY);
 
     m_curCategory = CAT2;
 
@@ -174,6 +175,10 @@ UCM::CategorySelectionInitializer UnitConverterMock::SetCurrentCategory(const UC
         units.push_back(UNIT9);
         break;
     }
+    case CURRENCY_ID:
+        units.push_back(UNITJPY);
+        units.push_back(UNITJOD);
+        break;
     default:
         throw;
     }
@@ -215,10 +220,15 @@ void UnitConverterMock::SwitchActive(const std::wstring& newValue)
     m_curValue = newValue;
 }
 
-    std::wstring UnitConverterMock::SaveUserPreferences()
+bool UnitConverterMock::IsSwitchedActive() const
-    {
+{
-        return L"TEST";
+    return false;
-    };
+}
+
+std::wstring UnitConverterMock::SaveUserPreferences()
+{
+    return L"TEST";
+};
 
 void UnitConverterMock::RestoreUserPreferences(_In_ std::wstring_view /*userPreferences*/){};
 
@@ -341,7 +351,7 @@ TEST_METHOD(TestUnitConverterLoadSetsUpCategories)
     VM::UnitConverterViewModel vm(mock);
     IObservableVector<VM::Category ^> ^ cats = vm.Categories;
     VERIFY_ARE_EQUAL((UINT)1, mock->m_getCategoriesCallCount);
-    VERIFY_ARE_EQUAL((UINT)3, cats->Size);
+    VERIFY_ARE_EQUAL((UINT)4, cats->Size);
     // Verify that we match current category
     VERIFY_IS_TRUE(CAT2 == vm.CurrentCategory->GetModelCategory());
 }
@@ -935,6 +945,33 @@ TEST_METHOD(TestDecimalFormattingLogic)
     VERIFY_IS_TRUE(vm.Value1 == L"3");
     VERIFY_IS_TRUE(vm.Value2 == L"2.50");
 }
+
+TEST_METHOD(TestCurrencyFormattingLogic)
+{
+    // verify that currency fraction digits is formatted per currency type
+
+    shared_ptr<UnitConverterMock> mock = make_shared<UnitConverterMock>();
+    VM::UnitConverterViewModel vm(mock);
+
+    // Establish base condition
+    vm.CurrentCategory = vm.Categories->GetAt(3); // Currency
+    vm.Unit1 = vm.Units->GetAt(0);                // JPY
+    vm.Unit2 = vm.Units->GetAt(1);                // JOD
+    vm.UnitChanged->Execute(nullptr);
+
+    const WCHAR *vFrom = L"1.2340", *vTo = L"0.0070";
+    vm.UpdateDisplay(vFrom, vTo);
+
+    VERIFY_IS_TRUE(vm.Value1 == L"1");
+    VERIFY_IS_TRUE(vm.Value2 == L"0.007");
+    vm.SwitchActive->Execute(nullptr);
+    VERIFY_IS_TRUE(vm.Value1 == L"1");
+    VERIFY_IS_TRUE(vm.Value2 == L"0.007");
+    vm.SwitchActive->Execute(nullptr);
+    VERIFY_IS_TRUE(vm.Value1 == L"1");
+    VERIFY_IS_TRUE(vm.Value2 == L"0.007");
+}
+
 // Tests that when we switch the active field and get display
 // updates, the correct automation names are are being updated.
 TEST_METHOD(TestValue1AndValue2AutomationNameChanges)

src/CalculatorUnitTests/UnitConverterViewModelUnitTests.h

@@ -9,6 +9,8 @@ namespace UCM = UnitConversionManager;
 
 namespace CalculatorUnitTests
 {
+    static constexpr int CURRENCY_ID = 16;
+
     static UCM::Unit UNIT1 = { 1, L"UNIT1", L"U1", true, false, false };
     static UCM::Unit UNIT2 = { 2, L"UNIT2", L"U2", false, true, false };
     static UCM::Unit UNIT3 = { 3, L"UNIT3", L"U3", false, false, false };
@@ -19,10 +21,13 @@ namespace CalculatorUnitTests
     static UCM::Unit UNIT8 = { 8, L"UNIT8", L"U8", false, false, false };
     static UCM::Unit UNIT9 = { 9, L"UNIT9", L"U9", true, false, false };
     static UCM::Unit UNITWHIMSY = { 10, L"Whimsy", L"UW", true, false, true };
+    static UCM::Unit UNITJPY = { 11, L"Japan - Yen", L"JPY", true, true, false };
+    static UCM::Unit UNITJOD = { 12, L"Jordan - Dinar", L"JOD", true, true, false };
 
-    static UCM::Category CAT1 = { 1, L"CAT1", false }; // contains Unit1 - Unit3
+    static UCM::Category CAT1 = { 1, L"CAT1", false };                       // contains Unit1 - Unit3
-    static UCM::Category CAT2 = { 2, L"CAT2", false }; // contains Unit4 - Unit6
+    static UCM::Category CAT2 = { 2, L"CAT2", false };                       // contains Unit4 - Unit6
-    static UCM::Category CAT3 = { 3, L"CAT3", false }; // contains Unit7 - Unit9
+    static UCM::Category CAT3 = { 3, L"CAT3", false };                       // contains Unit7 - Unit9
+    static UCM::Category CAT_CURRENCY = { CURRENCY_ID, L"Currency", false }; // contains UnitJPY and UnitJOD
 
     class UnitConverterMock : public UnitConversionManager::IUnitConverter
     {
@@ -33,7 +38,8 @@ namespace CalculatorUnitTests
         UCM::CategorySelectionInitializer SetCurrentCategory(const UCM::Category& input) override;
         UCM::Category GetCurrentCategory();
         void SetCurrentUnitTypes(const UCM::Unit& fromType, const UCM::Unit& toType) override;
-        void SwitchActive(const std::wstring& newValue);
+        void SwitchActive(const std::wstring& newValue) override;
+        bool IsSwitchedActive() const override;
         std::wstring SaveUserPreferences() override;
         void RestoreUserPreferences(_In_ std::wstring_view userPreferences) override;
         void SendCommand(UCM::Command command) override;