Add functional tests for currency fraction digit format

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 +64,35 @@ namespace CalculatorUITestFramework
             }
         }
 
+        /// <summary>
+        /// Ensure Units1 and Units2 are the same 
+        /// </summary>
+        public void EnsureSameUnitsAreSelected()
+        {
+            SelectUnits1("United States - Dollar");
+            SelectUnits2("United States - Dollar");
+        }
+
+        /// <summary>
+        /// Select value in Units1 ComboBox
+        /// </summary>
+        /// <param name="value">Value in ComboBox Units1</param>
+        public void SelectUnits1(string value)
+        {
+            UnitConverterOperators.Units1.SendKeys(OpenQA.Selenium.Keys.Home);
+            UnitConverterOperators.Units1.SendKeys(value);
+            UnitConverterOperators.Units1.SendKeys(OpenQA.Selenium.Keys.Enter);
+        }
+
+        /// <summary>
+        /// Select value in Units2 ComboBox
+        /// </summary>
+        /// <param name="value">Value in ComboBox Units2</param>
+        public void SelectUnits2(string value)
+        {
+            UnitConverterOperators.Units2.SendKeys(OpenQA.Selenium.Keys.Home);
+            UnitConverterOperators.Units2.SendKeys(value);
+            UnitConverterOperators.Units2.SendKeys(OpenQA.Selenium.Keys.Enter);
+        }
     }
 }

src/CalculatorUITests/CurrencyConverterFunctionalTests.cs

@@ -42,6 +42,7 @@ namespace CalculatorUITests
             CalculatorApp.EnsureCalculatorHasFocus();
             page.EnsureCalculatorIsCurrencyMode();
             page.EnsureCalculatorResultTextIsZero();
+            page.EnsureSameUnitsAreSelected();
         }
 
         [TestCleanup]
@@ -50,6 +51,23 @@ 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 +147,36 @@ namespace CalculatorUITests
             Assert.AreEqual("0", page.UnitConverterResults.GetCalculationResult2Text()); //verifies Backspace button clicks
         }
 
+        /// <summary>
+        /// These automated tests verify different currencies use different formatter that the display value should have expected fraction digits
+        /// Via mouse input, all basic UI functionality is checked 
+        /// </summary>
+        [TestMethod]
+        [DataRow("Japan - Yen", 0)]
+        [DataRow("Korea - Won", 0)]
+        [DataRow("Tunisia - Dinar", 3)]
+        [DataRow("Jordan - Dinar", 3)]
+        [DataRow("China - Yuan", 2)]
+        [Priority(0)]
+        public void MouseInput_SelectCurrencyEnterInputWithDecimalAndCheckTheFractionDigits(string currency, int fractionDigits)
+        {
+            //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
+        }
+
         #endregion
     }
 }