restructure project

web/src/test/java/de/cotto/lndmanagej/controller/CostExceptionHandlerTest.java

@@ -0,0 +1,29 @@
+package de.cotto.lndmanagej.controller;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.springframework.http.HttpStatus;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ExtendWith(MockitoExtension.class)
+class CostExceptionHandlerTest {
+    private static final CostException EXCEPTION = new CostException("abc");
+
+    @InjectMocks
+    private CostExceptionHandler costExceptionHandler;
+
+    @Test
+    void mapsToBadRequest() {
+        assertThat(costExceptionHandler.handleException(EXCEPTION).getStatusCode())
+                .isEqualTo(HttpStatus.BAD_REQUEST);
+    }
+
+    @Test
+    void returnsMessageInBody() {
+        assertThat(costExceptionHandler.handleException(EXCEPTION).getBody())
+                .isEqualTo(EXCEPTION.getMessage());
+    }
+}