Add tests for HTTP login flow

src/test/java/rs/iggy/http/UsersHttpClientTest.java

@@ -0,0 +1,28 @@
+package rs.iggy.http;
+
+import org.junit.jupiter.api.Test;
+import rs.iggy.IggyClient;
+import rs.iggy.user.UsersClientBaseTest;
+import static org.assertj.core.api.Assertions.assertThat;
+
+class UsersHttpClientTest extends UsersClientBaseTest {
+
+    @Override
+    protected IggyClient getClient() {
+        return HttpClientFactory.create(iggyServer);
+    }
+
+
+    @Test
+    void shouldGetTokens() {
+        // when
+        var identityInfo = usersClient.login("iggy", "iggy");
+
+        // then
+        assertThat(identityInfo).isNotNull();
+        assertThat(identityInfo.tokens()).isPresent();
+        assertThat(identityInfo.tokens().get().accessToken().token()).isNotBlank();
+        assertThat(identityInfo.tokens().get().refreshToken().token()).isNotBlank();
+    }
+
+}

src/test/java/rs/iggy/user/UsersClientBaseTest.java

@@ -0,0 +1,27 @@
+package rs.iggy.user;
+
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import rs.iggy.IntegrationTest;
+import static org.assertj.core.api.Assertions.assertThat;
+
+public abstract class UsersClientBaseTest extends IntegrationTest {
+
+    protected UsersClient usersClient;
+
+    @BeforeEach
+    void beforeEachBase() {
+        usersClient = client.users();
+    }
+
+    @Test
+    void shouldLogin() {
+        // when
+        var identityInfo = usersClient.login("iggy", "iggy");
+
+        // then
+        assertThat(identityInfo).isNotNull();
+        assertThat(identityInfo.userId()).isEqualTo(1L);
+    }
+
+}