diff --git a/.classpath b/.classpath
index 16de989..1ab42a3 100644
--- a/.classpath
+++ b/.classpath
@@ -18,12 +18,16 @@
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
-	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER"/>
 	<classpathentry kind="con" path="org.eclipse.m2e.MAVEN2_CLASSPATH_CONTAINER">
 		<attributes>
 			<attribute name="maven.pomderived" value="true"/>
 		</attributes>
 	</classpathentry>
 	<classpathentry kind="con" path="org.eclipse.jdt.junit.JUNIT_CONTAINER/5"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER">
+		<attributes>
+			<attribute name="module" value="true"/>
+		</attributes>
+	</classpathentry>
 	<classpathentry kind="output" path="target/classes"/>
 </classpath>
diff --git a/.gitignore b/.gitignore
index 288a569..4ab02c4 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,5 @@
 .metadata
+doc/
 bin/
 tmp/
 *.tmp
diff --git a/src/main/java/edu/mills/cs180a/wordui/model/SampleData.java b/src/main/java/edu/mills/cs180a/wordui/model/SampleData.java
index f9d8846..a58eee3 100644
--- a/src/main/java/edu/mills/cs180a/wordui/model/SampleData.java
+++ b/src/main/java/edu/mills/cs180a/wordui/model/SampleData.java
@@ -12,9 +12,16 @@
 import edu.mills.cs180a.wordnik.client.model.WordOfTheDay;
 import javafx.collections.ObservableList;
 
+
 public class SampleData {
+    /**
+     * String key for the count.
+     */
     @VisibleForTesting
     protected static final String FREQ_COUNT_KEY = "count";
+    /**
+     * String key for the frequency.
+     */
     @VisibleForTesting
     protected static final String FREQ_YEAR_KEY = "year";
     private static final int FREQ_YEAR = 2012;
@@ -22,8 +29,6 @@ public class SampleData {
 
     private static int getFrequencyFromSummary(FrequencySummary fs, int year) {
         List<Object> freqObjects = fs.getFrequency();
-        // freqObjects is a List<Map> [{"year" = "2012", "count" = 179}] for "Java"
-
         if (freqObjects instanceof List) {
             List<Object> maps = (List<Object>) freqObjects;
             for (Object map : maps) {
@@ -43,34 +48,43 @@ private static int getFrequencyFromSummary(FrequencySummary fs, int year) {
     }
 
     // TODO: Move to spring-swagger-wordnik-client
+
     @VisibleForTesting
     protected static int getFrequencyByYear(WordApi wordApi, String word, int year) {
         FrequencySummary fs = wordApi.getWordFrequency(word, "false", year, year);
         return getFrequencyFromSummary(fs, year);
     }
 
-    private static WordRecord buildWordRecord(String word, Map<Object, Object> definition) {
-        WordApi wordApi = client.buildClient(WordApi.class);
+    private static WordRecord buildWordRecord(String word, Map<Object, Object> definition,
+            WordApi wordApi) {
         return new WordRecord(
                 word,
                 getFrequencyByYear(wordApi, word, FREQ_YEAR),
                 definition.get("text").toString());
     }
 
+    /**
+     * Gets a word of the day object.
+     * 
+     * @param wordsApi the words API
+     * @return the word of the day
+     */
+    @VisibleForTesting
+    protected static WordOfTheDay getWordOfTheDay(WordsApi wordsApi) {
+        return wordsApi.getWordOfTheDay();
+    }
+
+    /**
+     * Adds word records to a passed list.
+     * 
+     * @param backingList the list of word records
+     */
     public static void fillSampleData(ObservableList<WordRecord> backingList) {
         try {
             client = ApiClientHelper.getApiClient();
             WordsApi wordsApi = client.buildClient(WordsApi.class);
-            WordOfTheDay word = wordsApi.getWordOfTheDay();
-            List<Object> definitions = word.getDefinitions();
-            if (definitions != null && !definitions.isEmpty()) {
-                Object definition = definitions.get(0);
-                if (definition instanceof Map) {
-                    @SuppressWarnings("unchecked")
-                    Map<Object, Object> definitionAsMap = (Map<Object, Object>) definition;
-                    backingList.add(buildWordRecord(word.getWord(), definitionAsMap));
-                }
-            }
+            WordApi wordApi = client.buildClient(WordApi.class);
+            addWordOfTheDay(backingList, wordsApi, wordApi);
         } catch (IOException e) {
             System.err.println("Unable to get API key.");
         }
@@ -82,4 +96,27 @@ public static void fillSampleData(ObservableList<WordRecord> backingList) {
         backingList.add(new WordRecord("random",
                 794, "Having no specific pattern, purpose, or objective"));
     }
+
+    /**
+     * Adds the word to the passed list.
+     * 
+     * @param backingList the list of word records
+     * @param wordsApi the words API
+     * @param wordApi the word API
+     */
+    @VisibleForTesting
+    protected static void addWordOfTheDay(ObservableList<WordRecord> backingList,
+            WordsApi wordsApi, WordApi wordApi) {
+        WordOfTheDay word = getWordOfTheDay(wordsApi);
+
+        List<Object> definitions = word.getDefinitions();
+        if (definitions != null && !definitions.isEmpty()) {
+            Object definition = definitions.get(0);
+            if (definition instanceof Map) {
+                @SuppressWarnings("unchecked")
+                Map<Object, Object> definitionAsMap = (Map<Object, Object>) definition;
+                backingList.add(buildWordRecord(word.getWord(), definitionAsMap, wordApi));
+            }
+        }
+    }
 }
diff --git a/src/test/java/edu/mills/cs180a/wordui/model/SampleDataTest.java b/src/test/java/edu/mills/cs180a/wordui/model/SampleDataTest.java
index 2d346d0..43b0df4 100644
--- a/src/test/java/edu/mills/cs180a/wordui/model/SampleDataTest.java
+++ b/src/test/java/edu/mills/cs180a/wordui/model/SampleDataTest.java
@@ -5,28 +5,76 @@
 import static org.mockito.ArgumentMatchers.anyString;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.when;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
 import org.junit.jupiter.params.ParameterizedTest;
 import org.junit.jupiter.params.provider.CsvSource;
 import edu.mills.cs180a.wordnik.client.api.WordApi;
+import edu.mills.cs180a.wordnik.client.api.WordsApi;
 import edu.mills.cs180a.wordnik.client.model.FrequencySummary;
+import edu.mills.cs180a.wordnik.client.model.WordOfTheDay;
+import javafx.collections.FXCollections;
+import javafx.collections.ObservableList;
+
 
 class SampleDataTest {
     private final FrequencySummary mockFS = mock(FrequencySummary.class);
     private final WordApi mockWordApi = mock(WordApi.class);
+    private final WordsApi mockWordsApi = mock(WordsApi.class);
+    private static final WordOfTheDay TODAYS_WORD = mock(WordOfTheDay.class);
+    private static final String A_WORD = "jingle";
+    private static final Map<String, FrequencySummary> FREQS_MAP = Map.of(
+            "apple",
+            makeFreqSummary(List.of(
+                    makeMap(2000, 339),
+                    makeMap(2001, 464))),
+            "orange",
+            makeFreqSummary(List.of(
+                    makeMap(2000, 774),
+                    makeMap(2001, 941))),
+            A_WORD,
+            makeFreqSummary(List.of(
+                    makeMap(2020, 187))));
+    private static final String TODAYS_DEF = "def for jingle";
+    private static final List<Object> WORD_DEFS = List.of(TODAYS_DEF);
+    private static final List<Object> DEF_LIST = List.of(Map.of("text", TODAYS_DEF));
+    private static final List<Object> DEF_LIST_MAP = List.of(Map.of(
+            "text", WORD_DEFS.get(0)));
+
+
 
     @BeforeEach
     void setup() {
-        List<Object> freqObjects = List.of(
-                // frequencies for "apple"
-                makeMap(2000, 339),
-                makeMap(2001, 464));
-        when(mockFS.getFrequency())
-                .thenReturn(freqObjects);
         when(mockWordApi.getWordFrequency(anyString(), anyString(), anyInt(), anyInt()))
-                .thenReturn(mockFS);
+                .thenAnswer(invocation -> FREQS_MAP.get(invocation.getArgument(0)));
+        when(mockWordsApi.getWordOfTheDay())
+                .thenReturn(TODAYS_WORD);
+        when(TODAYS_WORD.getWord())
+                .thenReturn(A_WORD);
+        when(TODAYS_WORD.getDefinitions())
+                .thenReturn(DEF_LIST_MAP);
+    }
+
+    @Test
+    void addWordOfTheDay_EqualsWordRecord_MockWordsObject() {
+        List<WordRecord> testList = new ArrayList<>();
+        ObservableList<WordRecord> testListRecord = FXCollections.observableList(testList);
+        SampleData.addWordOfTheDay(testListRecord, mockWordsApi, mockWordApi);
+
+        assertEquals("jingle", TODAYS_WORD.getWord());
+        assertEquals(DEF_LIST, TODAYS_WORD.getDefinitions());
+        assertEquals(1, testListRecord.size());
+        assertEquals(187, SampleData.getFrequencyByYear(mockWordApi, TODAYS_WORD.getWord(), 2020));
+    }
+
+    private static FrequencySummary makeFreqSummary(List<Object> freqs) {
+        FrequencySummary fs = mock(FrequencySummary.class);
+        when(fs.getFrequency())
+                .thenReturn(freqs);
+        return fs;
     }
 
     private static Map<Object, Object> makeMap(int year, int count) {
@@ -34,9 +82,18 @@ private static Map<Object, Object> makeMap(int year, int count) {
                 SampleData.FREQ_COUNT_KEY, count);
     }
 
+    @Test
+    void getWordOfTheDay_EqualsWordRecord_MockWordsObject() {
+        assertEquals("jingle", TODAYS_WORD.getWord());
+        assertEquals(DEF_LIST, TODAYS_WORD.getDefinitions());
+        assertEquals(187, SampleData.getFrequencyByYear(mockWordApi, TODAYS_WORD.getWord(), 2020));
+    }
+
     @ParameterizedTest
-    @CsvSource({"apple,2000,339", "apple,2001,464", "apple,2020,0"})
+    @CsvSource({"apple,2000,339", "apple,2001,464", "apple,2020,0",
+            "orange,2000,774", "orange,2001,941", "orange,2050,0"})
     void testGetFrequencyFromSummary(String word, int year, int count) {
         assertEquals(count, SampleData.getFrequencyByYear(mockWordApi, word, year));
     }
+
 }