Implement API for fetching single data type

Signed-off-by: Vasyl Razinkov <vasyl.razinkov@est.tech>
Change-Id: Icebf660d67d503250e4f6d4d7fd5a2e169cdc951
Issue-ID: SDC-4184

1 files changed, 152 insertions, 0 deletions

diff --git a/catalog-be/src/test/java/org/openecomp/sdc/be/servlets/DataTypeServletTest.java b/catalog-be/src/test/java/org/openecomp/sdc/be/servlets/DataTypeServletTest.java
new file mode 100644
index 0000000000..39ba071a74
--- /dev/null
+++ b/catalog-be/src/test/java/org/openecomp/sdc/be/servlets/DataTypeServletTest.java
@@ -0,0 +1,152 @@
+/*
+ * ============LICENSE_START=======================================================
+ * SDC
+ * ================================================================================
+ * Copyright (C) 2022 Nordix Foundation. All rights reserved.
+ * ================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.openecomp.sdc.be.servlets;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertNotNull;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+import java.util.Optional;
+import javax.servlet.ServletContext;
+import javax.ws.rs.core.MediaType;
+import javax.ws.rs.core.Response;
+import org.apache.http.HttpStatus;
+import org.glassfish.jersey.server.ResourceConfig;
+import org.glassfish.jersey.test.TestProperties;
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mockito;
+import org.mockito.MockitoAnnotations;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.openecomp.sdc.be.dao.api.ActionStatus;
+import org.openecomp.sdc.be.datatypes.elements.DataTypeDataDefinition;
+import org.openecomp.sdc.be.impl.ComponentsUtils;
+import org.openecomp.sdc.be.impl.WebAppContextWrapper;
+import org.openecomp.sdc.be.model.jsonjanusgraph.operations.exception.OperationException;
+import org.openecomp.sdc.be.model.operations.impl.DataTypeOperation;
+import org.openecomp.sdc.common.api.Constants;
+import org.openecomp.sdc.exception.ResponseFormat;
+import org.springframework.web.context.WebApplicationContext;
+
+@ExtendWith(MockitoExtension.class)
+class DataTypeServletTest extends JerseySpringBaseTest {
+
+    private static final String USER_ID = "cs0008";
+    private static final String DATA_TYPE_UID = "ETSI SOL001 v2.5.1.tosca.datatypes.nfv.L3AddressData.datatype";
+    private static final String PATH = "/v1/catalog/data-types/" + DATA_TYPE_UID;
+
+    @InjectMocks
+    private DataTypeServlet dataTypeServlet;
+    private ComponentsUtils componentsUtils;
+    private DataTypeOperation dataTypeOperation;
+    private ServletContext servletContext;
+    private WebApplicationContext webApplicationContext;
+    private WebAppContextWrapper webAppContextWrapper;
+
+    @Override
+    protected ResourceConfig configure() {
+        initMocks();
+        MockitoAnnotations.openMocks(this);
+        forceSet(TestProperties.CONTAINER_PORT, "0");
+        return super.configure().register(dataTypeServlet);
+    }
+
+    private void initMocks() {
+        componentsUtils = mock(ComponentsUtils.class);
+        dataTypeOperation = mock(DataTypeOperation.class);
+        servletContext = Mockito.mock(ServletContext.class);
+        webApplicationContext = Mockito.mock(WebApplicationContext.class);
+        webAppContextWrapper = Mockito.mock(WebAppContextWrapper.class);
+    }
+
+    @BeforeEach
+    void before() throws Exception {
+        super.setUp();
+        when(request.getSession()).thenReturn(session);
+        when(session.getServletContext()).thenReturn(servletContext);
+        when(webApplicationContext.getBean(ComponentsUtils.class)).thenReturn(componentsUtils);
+        when(servletContext.getAttribute(Constants.WEB_APPLICATION_CONTEXT_WRAPPER_ATTR)).thenReturn(webAppContextWrapper);
+        when(webAppContextWrapper.getWebAppContext(servletContext)).thenReturn(webApplicationContext);
+    }
+
+    @AfterEach
+    void after() throws Exception {
+        super.tearDown();
+    }
+
+    @Test
+    void fetchDataTypeTest_Success() {
+        when(componentsUtils.getResponseFormat(ActionStatus.OK)).thenReturn(new ResponseFormat(HttpStatus.SC_OK));
+        when(dataTypeOperation.getDataTypeByUid(DATA_TYPE_UID)).thenReturn(Optional.of(new DataTypeDataDefinition()));
+
+        final Response response = target()
+            .path(PATH)
+            .request(MediaType.APPLICATION_JSON)
+            .header("USER_ID", USER_ID)
+            .get(Response.class);
+        assertNotNull(response);
+        assertEquals(HttpStatus.SC_OK, response.getStatus());
+    }
+
+    @Test
+    void fetchDataTypeTest_Fail_OperationException() {
+        when(dataTypeOperation.getDataTypeByUid(DATA_TYPE_UID)).thenThrow(OperationException.class);
+
+        final Response response = target()
+            .path(PATH)
+            .request(MediaType.APPLICATION_JSON)
+            .header("USER_ID", USER_ID)
+            .get(Response.class);
+        assertNotNull(response);
+        assertEquals(HttpStatus.SC_INTERNAL_SERVER_ERROR, response.getStatus());
+    }
+
+    @Test
+    void fetchDataTypeTest_Fail_EmptyOptional() {
+        when(dataTypeOperation.getDataTypeByUid(DATA_TYPE_UID)).thenReturn(Optional.empty());
+
+        final Response response = target()
+            .path(PATH)
+            .request(MediaType.APPLICATION_JSON)
+            .header("USER_ID", USER_ID)
+            .get(Response.class);
+        assertNotNull(response);
+        assertEquals(HttpStatus.SC_INTERNAL_SERVER_ERROR, response.getStatus());
+    }
+
+    @Test
+    void fetchDataTypeTest_Fail_RuntimeException() {
+        when(dataTypeOperation.getDataTypeByUid(DATA_TYPE_UID)).thenThrow(RuntimeException.class);
+
+        final Response response = target()
+            .path(PATH)
+            .request(MediaType.APPLICATION_JSON)
+            .header("USER_ID", USER_ID)
+            .get(Response.class);
+        assertNotNull(response);
+        assertEquals(HttpStatus.SC_INTERNAL_SERVER_ERROR, response.getStatus());
+    }
+
+}