Adds test coverage for AuthenticationDAO class

src/test/java/com/nylas/AuthenticationDAOTest.java

@@ -0,0 +1,44 @@
+package com.nylas;
+
+import okhttp3.HttpUrl;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.mockito.Mockito.mock;
+
+
+public class AuthenticationDAOTest {
+
+    private AuthenticationDAO authenticationDAO;
+    private NylasClient nylasClient;
+
+    private HttpUrl.Builder baseUrl;
+
+    @BeforeEach
+    private void init() {
+        nylasClient = mock(NylasClient.class);
+        NylasApplication nylasApplication = mock(NylasApplication.class);
+        baseUrl = new HttpUrl.Builder()
+                            .scheme("https")
+                            .host("test.nylas.com");
+    }
+
+    @Test
+    public void testAuthenticationDAO() {
+        AuthenticationDAO<TestAuthRest> grantAuthenticationDAO = new TestAuthEntity(
+                nylasClient,
+                TestAuthRest.class,
+                "test/auth",
+                "test-user",
+                baseUrl
+        );
+
+        HttpUrl.Builder collectionUrl = grantAuthenticationDAO.getCollectionUrl();
+
+        assertNotNull(grantAuthenticationDAO);
+        assertEquals(grantAuthenticationDAO.authUser, "test-user");
+        assertEquals(collectionUrl.build().toString(), "https://test.nylas.com/test/auth");
+    }
+}

src/test/java/com/nylas/TestAuthEntity.java

@@ -0,0 +1,10 @@
+package com.nylas;
+
+import okhttp3.HttpUrl;
+
+public class TestAuthEntity extends AuthenticationDAO<TestAuthRest> {
+
+    TestAuthEntity(NylasClient client, Class<TestAuthRest> modelClass, String endpointPath, String authUser, HttpUrl.Builder baseUrl) {
+        super(client, modelClass, endpointPath, authUser, baseUrl);
+    }
+}

src/test/java/com/nylas/TestAuthRest.java

@@ -0,0 +1,4 @@
+package com.nylas;
+
+public class TestAuthRest extends RestfulModel {
+}