Added Test to check if HashTrieSet has been ported over from P1

src/test/java/provided/HashTrieSetTests.java

+package provided;
+
+
+import cse332.types.AlphabeticString;
+import datastructures.dictionaries.HashTrieSet;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.Timeout;
+
+import java.lang.reflect.Field;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.concurrent.TimeUnit;
+
+import static org.junit.jupiter.api.Assertions.*;
+public class HashTrieSetTests {
+
+    /**
+     * Test to check if HashTrieSet has been copied over from P1
+     * */
+    @Test()
+    @Timeout(value = 3000, unit = TimeUnit.MILLISECONDS)
+    public void test_isHashTrieSetAvailable() {
+        HashTrieSet<Character, AlphabeticString> STUDENT = new HashTrieSet<>(AlphabeticString.class);
+        String[] words = {"dog", "doggy", "doge", "dragon", "cat", "draggin"};
+        String[] invalid = {"d", "cataract", "", "do"};
+
+        for (String word: words) {
+            STUDENT.add(a(word));
+        }
+
+        assertEquals(6, STUDENT.size());
+
+        for (String word: words) {
+            assertTrue(STUDENT.contains(a(word)));
+        }
+
+        for (String invalid_word: invalid) {
+            assertFalse(STUDENT.contains(a(invalid_word)));
+        }
+    }
+
+    private static AlphabeticString a(String s) {
+        return new AlphabeticString(s);
+    }
+}