diff --git a/.gitignore b/.gitignore
index bbbb8a9..be70db6 100644
--- a/.gitignore
+++ b/.gitignore
@@ -29,9 +29,6 @@ hs_err_pid*
 ws-sdk/ws/conf/dpppt-backend-sdk-ws-logback.xml
 ws-sdk/ws/conf/dpppt-backend-sdk-ws.properties
 
-# maven
-target
-
-# idea
 *.iml
 .idea
+**/target/
diff --git a/dpppt-backend-sdk/dpppt-backend-sdk-ws/src/main/java/org/dpppt/backend/sdk/ws/controller/DPPPTController.java b/dpppt-backend-sdk/dpppt-backend-sdk-ws/src/main/java/org/dpppt/backend/sdk/ws/controller/DPPPTController.java
index 17edce5..51d7763 100644
--- a/dpppt-backend-sdk/dpppt-backend-sdk-ws/src/main/java/org/dpppt/backend/sdk/ws/controller/DPPPTController.java
+++ b/dpppt-backend-sdk/dpppt-backend-sdk-ws/src/main/java/org/dpppt/backend/sdk/ws/controller/DPPPTController.java
@@ -72,7 +72,7 @@ public DPPPTController(DPPPTDataService dataService, EtagGeneratorInterface etag
 			return ResponseEntity.ok().build();
 
 		} else {
-			return new ResponseEntity<String>("No valid base64 key", HttpStatus.BAD_REQUEST);
+			return new ResponseEntity<>("No valid base64 key", HttpStatus.BAD_REQUEST);
 		}
 	}
 
diff --git a/dpppt-backend-sdk/dpppt-backend-sdk-ws/src/test/java/org/dpppt/backend/sdk/ws/controller/DPPPTControllerTest.java b/dpppt-backend-sdk/dpppt-backend-sdk-ws/src/test/java/org/dpppt/backend/sdk/ws/controller/DPPPTControllerTest.java
new file mode 100644
index 0000000..8edc9ce
--- /dev/null
+++ b/dpppt-backend-sdk/dpppt-backend-sdk-ws/src/test/java/org/dpppt/backend/sdk/ws/controller/DPPPTControllerTest.java
@@ -0,0 +1,96 @@
+package org.dpppt.backend.sdk.ws.controller;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.dpppt.backend.sdk.data.DPPPTDataService;
+import org.dpppt.backend.sdk.data.EtagGeneratorInterface;
+import org.dpppt.backend.sdk.model.ExposedOverview;
+import org.dpppt.backend.sdk.model.Exposee;
+import org.dpppt.backend.sdk.model.ExposeeAuthData;
+import org.dpppt.backend.sdk.model.ExposeeRequest;
+import org.dpppt.backend.sdk.ws.Application;
+import org.junit.jupiter.api.Test;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Captor;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.web.servlet.MockMvc;
+
+import java.util.Collections;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.*;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@ActiveProfiles("dev")
+@SpringBootTest(classes = Application.class)
+@AutoConfigureMockMvc
+public class DPPPTControllerTest {
+
+    @Autowired private MockMvc mockMvc;
+    @Autowired private ObjectMapper objectMapper;
+
+    @MockBean private DPPPTDataService dataService;
+    @MockBean private EtagGeneratorInterface etagGenerator;
+
+    @Captor private ArgumentCaptor<Exposee> exposeeCaptor;
+
+    @Test
+    void shouldSayHello() throws Exception {
+        mockMvc.perform(get("/v1")).andExpect(status().isOk())
+                .andExpect(content().string("Hello from DP3T WS"));
+    }
+
+    @Test
+    void shouldAddExposed() throws Exception {
+        // given
+        ExposeeRequest request = new ExposeeRequest();
+        request.setKey("key");
+        request.setOnset("onset");
+        request.setAuthData(new ExposeeAuthData());
+
+        // when
+        mockMvc.perform(post("/v1/exposed")
+                .content(objectMapper.writeValueAsString(request))
+                .contentType("application/json")
+                .header("User-Agent", "user-agent")
+        ).andExpect(status().isOk())
+                .andExpect(content().string(""));
+
+        // then
+        verify(dataService, times(1)).upsertExposee(exposeeCaptor.capture(), anyString());
+
+        Exposee exposee = exposeeCaptor.getValue();
+        assertThat(exposee).isNotNull();
+        assertThat(exposee.getId()).isNull();
+        assertThat(exposee.getKey()).isEqualTo(request.getKey());
+        assertThat(exposee.getOnset()).isEqualTo(request.getOnset());
+    }
+
+    @Test
+    void shouldGetExposed() throws Exception {
+        // given
+        Exposee exposee = new Exposee();
+        exposee.setId(1);
+        exposee.setKey("key");
+        exposee.setOnset("onset");
+        String date = "2020-12-30";
+        when(dataService.getMaxExposedIdForDay(any())).thenReturn(10);
+        when(dataService.getSortedExposedForDay(any()))
+                .thenReturn(Collections.singletonList(exposee));
+
+        // when
+        mockMvc.perform(get("/v1/exposed/" + date))
+                .andExpect(status().isOk())
+                .andExpect(content().json(objectMapper.writeValueAsString(
+                        new ExposedOverview(Collections.singletonList(exposee))))
+                );
+    }
+
+}
\ No newline at end of file