Add new method to AccountAnalytics.java

Author: tboychuk

account-analytics/src/main/java/com.bobocode/AccountAnalytics.java

@@ -86,6 +86,16 @@ public List<Account> sortByFirstAndLastNames() {
         throw new UnsupportedOperationException("It's your job to implement this method"); // todo
     }
 
+    /**
+     * Checks if there is at least one account with provided email domain.
+     *
+     * @param emailDomain
+     * @return true if there is an account that has an email with provided domain
+     */
+    public boolean containsAccountWithEmailDomain(String emailDomain) {
+        throw new UnsupportedOperationException("It's your job to implement this method"); // todo
+    }
+
     /**
      * Returns a {@link Map} where key is {@link Account#lastName} and values is a {@link Set} that contains first names
      * of all accounts with a specific last name.
@@ -136,6 +146,5 @@ public Map<Character, Long> getCharacterFrequencyIgnoreCaseInFirstAndLastNames()
         throw new UnsupportedOperationException("It's your job to implement this method"); // todo
     }
 
-
 }
 

account-analytics/src/test/java/com/bobocode/AccountAnalyticsTest.java

@@ -14,6 +14,8 @@
 import java.util.*;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
 
 /**
  * The helper method of this test class do not use Stream API intentionally. You should try to find a stream-based
@@ -118,6 +120,13 @@ public void testSortByFirstAndLastNames() {
 
     }
 
+    @Test
+    public void testContainsAccountWithEmailDomain() {
+        assertTrue(analytics.containsAccountWithEmailDomain("gmail.com"));
+        assertTrue(analytics.containsAccountWithEmailDomain("yahoo.com"));
+        assertFalse(analytics.containsAccountWithEmailDomain("ukr.net"));
+    }
+
     @Test
     public void testGroupFirstNamesByLastNames() {
         Map<String, Set<String>> lastToFirstNamesMap = analytics.groupFirstNamesByLastNames();