GET endpoint

- no DB support jet
- Integation Tets

src/main/java/djmil/cashcard/CashCardController.java

@@ -0,0 +1,22 @@
+package djmil.cashcard;
+
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/cashcards")
+public class CashCardController {
+
+    @GetMapping("/{requestedId}")
+    public ResponseEntity<CashCard> findById(@PathVariable Long requestedId) {
+        if (requestedId.equals(99L)) {
+            CashCard cashCard = new CashCard(99L, 123.45);
+            return ResponseEntity.ok(cashCard);
+        } else {
+            return ResponseEntity.notFound().build();
+    	}
+    }
+}

src/test/java/djmil/cashcard/CashcardApplicationTests.java

@@ -1,13 +1,48 @@
 package djmil.cashcard;
 
 import org.junit.jupiter.api.Test;
-import org.springframework.boot.test.context.SpringBootTest;
 
-@SpringBootTest
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+
+import com.jayway.jsonpath.DocumentContext;
+import com.jayway.jsonpath.JsonPath;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
 class CashcardApplicationTests {
 
 	@Test
 	void contextLoads() {
 	}
 
+	@Autowired
+    TestRestTemplate restTemplate;
+
+    @Test
+    void shouldReturnACashCardWhenDataIsSaved() {
+        ResponseEntity<String> response = restTemplate.getForEntity("/cashcards/99", String.class);
+
+        assertThat(response.getStatusCode()).isEqualTo(HttpStatus.OK);
+
+		DocumentContext documentContext = JsonPath.parse(response.getBody());
+		
+		Number id = documentContext.read("$.id");
+		assertThat(id).isEqualTo(99);
+
+		Double amount = documentContext.read("$.amount");
+		assertThat(amount).isEqualTo(123.45);
+    }
+
+	@Test
+	void shouldNotReturnACashCardWithAnUnknownId() {
+		ResponseEntity<String> response = restTemplate.getForEntity("/cashcards/1000", String.class);
+
+  		assertThat(response.getStatusCode()).isEqualTo(HttpStatus.NOT_FOUND);
+		assertThat(response.getBody()).isBlank();
+	}
 }