add split string invocable test

force-app/main/default/classes/SplitStringInvocable.cls

@@ -3,9 +3,7 @@ public with sharing class SplitStringInvocable {
     label='Split String'
     description='Given a string and a delimiter, return a collection of strings'
   )
-  public static List<List<String>> SplitStringInvocable(
-    List<Request> requests
-  ) {
+  public static List<List<String>> execute(List<Request> requests) {
     List<List<String>> output = new List<List<String>>();
     for (Request req : requests) {
       output.add(req.inputText.split(req.delimiter));

force-app/main/default/classes/SplitStringInvocableTest.cls

@@ -0,0 +1,88 @@
+@IsTest
+private class SplitStringInvocableTest {
+  private static final String INPUT_TEXT_SEMICOLONS = 'monday;tuesday;wednesday;thursday;friday';
+  private static final String INPUT_TEXT_COMMAS = 'monday,tuesday,wednesday,thursday,friday';
+  private static final List<String> WEEK_DAYS;
+
+  static {
+    WEEK_DAYS = INPUT_TEXT_SEMICOLONS.split(';');
+  }
+
+  @IsTest
+  static void it_should_return_list_of_string_given_a_semi_colon_delimited_string() {
+    List<SplitStringInvocable.Request> requests = new List<SplitStringInvocable.Request>();
+    SplitStringInvocable.Request request = new SplitStringInvocable.Request();
+    request.inputText = INPUT_TEXT_SEMICOLONS;
+    request.delimiter = ';';
+    requests.add(request);
+
+    Test.startTest();
+
+    List<List<String>> result = SplitStringInvocable.execute(requests);
+
+    Test.stopTest();
+
+    System.Assert.isFalse(result.isEmpty());
+    System.Assert.areEqual(1, result.size());
+
+    List<String> stringList = result.get(0);
+    System.Assert.isFalse(stringList.isEmpty());
+    System.Assert.areEqual(5, stringList.size());
+    System.Assert.areEqual(WEEK_DAYS, stringList);
+  }
+
+  @IsTest
+  static void it_should_return_list_of_string_given_a_comma_delimited_string() {
+    List<SplitStringInvocable.Request> requests = new List<SplitStringInvocable.Request>();
+    SplitStringInvocable.Request request = new SplitStringInvocable.Request();
+    request.inputText = INPUT_TEXT_COMMAS;
+    request.delimiter = ',';
+    requests.add(request);
+
+    Test.startTest();
+
+    List<List<String>> result = SplitStringInvocable.execute(requests);
+
+    Test.stopTest();
+
+    System.Assert.isFalse(result.isEmpty());
+    System.Assert.areEqual(1, result.size());
+
+    List<String> stringList = result.get(0);
+    System.Assert.isFalse(stringList.isEmpty());
+    System.Assert.areEqual(5, stringList.size());
+    System.Assert.areEqual(WEEK_DAYS, stringList);
+  }
+
+  @IsTest
+  static void it_should_handle_multiple_requests() {
+    List<SplitStringInvocable.Request> requests = new List<SplitStringInvocable.Request>();
+    SplitStringInvocable.Request r1 = new SplitStringInvocable.Request();
+    r1.inputText = INPUT_TEXT_SEMICOLONS;
+    r1.delimiter = ';';
+    requests.add(r1);
+    SplitStringInvocable.Request r2 = new SplitStringInvocable.Request();
+    r2.inputText = INPUT_TEXT_COMMAS;
+    r2.delimiter = ',';
+    requests.add(r2);
+
+    Test.startTest();
+
+    List<List<String>> result = SplitStringInvocable.execute(requests);
+
+    Test.stopTest();
+
+    System.Assert.isFalse(result.isEmpty());
+    System.Assert.areEqual(2, result.size());
+
+    List<String> listOne = result.get(0);
+    System.Assert.isFalse(listOne.isEmpty());
+    System.Assert.areEqual(5, listOne.size());
+    System.Assert.areEqual(WEEK_DAYS, listOne);
+
+    List<String> listTwo = result.get(1);
+    System.Assert.isFalse(listTwo.isEmpty());
+    System.Assert.areEqual(5, listTwo.size());
+    System.Assert.areEqual(WEEK_DAYS, listTwo);
+  }
+}

force-app/main/default/classes/SplitStringInvocableTest.cls-meta.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<ApexClass xmlns="http://soap.sforce.com/2006/04/metadata">
+    <apiVersion>59.0</apiVersion>
+    <status>Active</status>
+</ApexClass>