src/test/java/com/example/controller/HealthControllerTest.java

@@ -0,0 +1,38 @@
+package com.example.controller;
+
+import org.junit.jupiter.api.Test;
+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.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.MvcResult;
+
+import static org.hamcrest.Matchers.*;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
+@SpringBootTest
+@AutoConfigureMockMvc
+class HealthControllerTest {
+
+    @Autowired
+    private MockMvc mockMvc;
+
+    @Test
+    void healthEndpointReturnsUp() throws Exception {
+        mockMvc.perform(get("/health"))
+                .andExpect(status().isOk())
+                .andExpect(jsonPath("$.status", is("UP")));
+    }
+
+    @Test
+    void healthEndpointReturnsJson() throws Exception {
+        MvcResult result = mockMvc.perform(get("/health"))
+                .andExpect(status().isOk())
+                .andReturn();
+
+        String content = result.getResponse().getContentAsString();
+        org.assertj.core.api.Assertions.assertThat(content)
+                .contains("{\"status\":\"UP\"}");
+    }
+}