Add test example

iam-api/src/test/java/com/omidmk/iamapi/IAMApiApplicationTests.java

@@ -1,13 +1,49 @@
 package com.omidmk.iamapi;
 
+import com.omidmk.iamapi.service.CustomerService;
 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.boot.test.mock.mockito.MockBean;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.boot.test.web.server.LocalServerPort;
+import org.springframework.test.web.servlet.MockMvc;
 
-@SpringBootTest
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.hamcrest.Matchers.containsString;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.result.MockMvcResultHandlers.print;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@AutoConfigureMockMvc
 class IAMApiApplicationTests {
 
+    @MockBean
+    private CustomerService customerService;
+
+    @LocalServerPort
+    private int port;
+
+    @Autowired
+    private TestRestTemplate restTemplate;
+
+    @Autowired
+    private MockMvc mockMvc;
+
     @Test
     void contextLoads() {
+        assertThat(this.restTemplate.getForObject("http://localhost:" + port + "/", String.class)).contains("Hello, World");
+//        assertThat(customerService).isNotNull();
+//        Assertions.assertNull(customerService.findUserByEmail("[email protected]").orElse(null));
+    }
+
+    @Test
+    void shouldReturnDefaultMessage() throws Exception {
+        this.mockMvc.perform(get("/v1/plans/beginner")).andDo(print()).andExpect(status().is4xxClientError())
+                .andExpect(content().string(containsString("")));
     }
 
 }