fixed unit tests to account for refresh token rotation

openid-connect-server/src/test/java/org/mitre/oauth2/service/impl/TestDefaultOAuth2ProviderTokenService.java

@@ -53,9 +53,12 @@ import com.google.common.collect.Sets;
 
 import static org.hamcrest.CoreMatchers.equalTo;
 import static org.hamcrest.CoreMatchers.is;
+import static org.hamcrest.CoreMatchers.not;
 import static org.hamcrest.CoreMatchers.notNullValue;
 import static org.hamcrest.CoreMatchers.nullValue;
 
+import static org.mockito.Mockito.when;
+
 import static org.junit.Assert.assertThat;
 import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
@@ -121,6 +124,7 @@ public class TestDefaultOAuth2ProviderTokenService {
 		client = Mockito.mock(ClientDetailsEntity.class);
 		Mockito.when(client.getClientId()).thenReturn(clientId);
 		Mockito.when(clientDetailsService.loadClientByClientId(clientId)).thenReturn(client);
+		Mockito.when(client.isReuseRefreshToken()).thenReturn(true);
 
 		// by default in tests, allow refresh tokens
 		Mockito.when(client.isAllowRefresh()).thenReturn(true);
@@ -395,6 +399,26 @@ public class TestDefaultOAuth2ProviderTokenService {
 		
 	}
 
+	@Test
+	public void refreshAccessToken_rotateRefreshToken() {
+
+		when(client.isReuseRefreshToken()).thenReturn(false);
+		
+		OAuth2AccessTokenEntity token = service.refreshAccessToken(refreshTokenValue, tokenRequest);
+
+		Mockito.verify(tokenRepository).clearAccessTokensForRefreshToken(refreshToken);
+
+		assertThat(token.getClient(), equalTo(client));
+		assertThat(token.getRefreshToken(), not(equalTo(refreshToken)));
+		assertThat(token.getAuthenticationHolder(), equalTo(storedAuthHolder));
+
+		Mockito.verify(tokenEnhancer).enhance(token, storedAuthentication);
+		Mockito.verify(tokenRepository).saveAccessToken(token);
+		Mockito.verify(tokenRepository).removeRefreshToken(refreshToken);
+		Mockito.verify(scopeService, Mockito.atLeastOnce()).removeReservedScopes(Matchers.anySet());
+		
+	}
+
 	@Test
 	public void refreshAccessToken_requestingSameScope() {