Merge pull request #1359 from yadavan88/patter-match-string

Added sample for string interpolation matching

Author: dominiqueplante

scala-core-modules/scala-core/src/main/scala/com/baeldung/scala/patternmatching/PatternMatching.scala

@@ -91,6 +91,17 @@ class PatternMatching {
     }
   }
 
+  def stringInterpolationMatching(toMatch: String): String = {
+    toMatch match {
+      case s"$firstName.$lastName@$domain.$extension" =>
+        s"Hey ${firstName.capitalize} ${lastName.capitalize}, $domain.$extension is your email domain"
+      case s"$day-$month-${year}T$time" => s"$month $day, $year"
+      case s"$something($parenthesis)${_}" =>
+        s"String between parenthesis: $parenthesis"
+      case _ => "unknown pattern"
+    }
+  }
+
   def optionsPatternMatching(option: Option[String]): String = {
     option match {
       case Some(value) => s"I'm not an empty option. Value $value"

scala-core-modules/scala-core/src/test/scala/com/baeldung/scala/patternmatching/PatternMatchingUnitTest.scala

@@ -155,6 +155,46 @@ class PatternMatchingUnitTest {
     )
   }
 
+  @Test
+  def whenEmailIsPassedWithComDomain_itShouldExtractParts(): Unit = {
+    val result = new PatternMatching().stringInterpolationMatching(
+      "[email protected]"
+    )
+    assertEquals("Hey James Kirk, starfleet.com is your email domain", result)
+  }
+
+  @Test
+  def whenEmailIsPassedWithCoInDomain_itShouldExtractParts(): Unit = {
+    val result = new PatternMatching().stringInterpolationMatching(
+      "[email protected]"
+    )
+    assertEquals("Hey James Kirk, starfleet.co.in is your email domain", result)
+  }
+
+  @Test
+  def whenDateTimeIsPassed_itShouldExtractDate(): Unit = {
+    val result = new PatternMatching().stringInterpolationMatching(
+      "01-April-2024T10:20:30"
+    )
+    assertEquals("April 01, 2024", result)
+  }
+
+  @Test
+  def whenStringIsPassed_itShouldExtractDataBetweenParenthesis(): Unit = {
+    val result = new PatternMatching().stringInterpolationMatching(
+      "Here is a (special) string"
+    )
+    assertEquals("String between parenthesis: special", result)
+  }
+
+  @Test
+  def whenUnknownDataIsPassed_itShouldReturnDefaultString(): Unit = {
+    val result = new PatternMatching().stringInterpolationMatching(
+      "something-unknown.unmatched"
+    )
+    assertEquals("unknown pattern", result)
+  }
+
   @Test
   def whenAFilledOptionIsPassed_ThenItShouldMatchTheSomeClause(): Unit = {
     val result =