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authortragait <rahul.tyagi@est.tech>2021-07-08 15:42:19 +0100
committerNiamh Core <niamh.core@est.tech>2021-08-04 09:53:58 +0000
commit2270d76e4f33ad231cdae317e88ea1769297cfec (patch)
treefe456072ca8254f6e4435c2d955d766e9cba6eed /src
parent7c4a9aa88269dbdb21c5c54bc47508463548bc1e (diff)
create post request for cmhandles registration
Issue-ID: CPS-406 Change-Id: I64e88643221403e117146443287d03788fb71c3e Signed-off-by: tragait <rahul.tyagi@est.tech>
Diffstat (limited to 'src')
-rw-r--r--src/main/java/org/onap/cps/ncmp/dmi/config/DmiPluginConfig.java11
-rw-r--r--src/main/java/org/onap/cps/ncmp/dmi/exception/CmHandleRegistrationException.java36
-rw-r--r--src/main/java/org/onap/cps/ncmp/dmi/exception/DmiExceptionHandler.java2
-rw-r--r--src/main/java/org/onap/cps/ncmp/dmi/model/CmHandleOperation.java35
-rw-r--r--src/main/java/org/onap/cps/ncmp/dmi/model/CreatedCmHandle.java36
-rw-r--r--src/main/java/org/onap/cps/ncmp/dmi/rest/controller/DmiRestController.java23
-rw-r--r--src/main/java/org/onap/cps/ncmp/dmi/service/DmiService.java9
-rw-r--r--src/main/java/org/onap/cps/ncmp/dmi/service/DmiServiceImpl.java59
-rw-r--r--src/main/resources/application.yml13
-rw-r--r--src/test/groovy/org/onap/cps/ncmp/dmi/rest/controller/DmiRestControllerSpec.groovy35
-rw-r--r--src/test/groovy/org/onap/cps/ncmp/dmi/service/DmiServiceImplSpec.groovy56
-rw-r--r--src/test/java/org/onap/cps/ncmp/dmi/TestUtils.java53
12 files changed, 357 insertions, 11 deletions
diff --git a/src/main/java/org/onap/cps/ncmp/dmi/config/DmiPluginConfig.java b/src/main/java/org/onap/cps/ncmp/dmi/config/DmiPluginConfig.java
index 33d6ae89..614435f2 100644
--- a/src/main/java/org/onap/cps/ncmp/dmi/config/DmiPluginConfig.java
+++ b/src/main/java/org/onap/cps/ncmp/dmi/config/DmiPluginConfig.java
@@ -20,8 +20,11 @@
package org.onap.cps.ncmp.dmi.config;
+import lombok.Getter;
+import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
+import org.springframework.stereotype.Component;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.spi.DocumentationType;
@@ -42,5 +45,13 @@ public class DmiPluginConfig {
.paths(PathSelectors.any())
.build();
}
+
+ @Getter
+ @Component
+ public static class DmiPluginProperties {
+
+ @Value("${dmi.service.name}")
+ private String dmiServiceName;
+ }
}
diff --git a/src/main/java/org/onap/cps/ncmp/dmi/exception/CmHandleRegistrationException.java b/src/main/java/org/onap/cps/ncmp/dmi/exception/CmHandleRegistrationException.java
new file mode 100644
index 00000000..1874389e
--- /dev/null
+++ b/src/main/java/org/onap/cps/ncmp/dmi/exception/CmHandleRegistrationException.java
@@ -0,0 +1,36 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2021 Nordix Foundation
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.exception;
+
+public class CmHandleRegistrationException extends DmiException {
+
+ private static final long serialVersionUID = 8973438585188332404L;
+
+ /**
+ * Constructor.
+ *
+ * @param details the error details
+ */
+ public CmHandleRegistrationException(final String details) {
+ super("Not able to register the given cm-handles.", details);
+ }
+
+}
diff --git a/src/main/java/org/onap/cps/ncmp/dmi/exception/DmiExceptionHandler.java b/src/main/java/org/onap/cps/ncmp/dmi/exception/DmiExceptionHandler.java
index 9ad561fc..a6ec6dfa 100644
--- a/src/main/java/org/onap/cps/ncmp/dmi/exception/DmiExceptionHandler.java
+++ b/src/main/java/org/onap/cps/ncmp/dmi/exception/DmiExceptionHandler.java
@@ -51,7 +51,7 @@ public class DmiExceptionHandler {
return buildErrorResponse(HttpStatus.NOT_FOUND, exception);
}
- @ExceptionHandler({DmiException.class})
+ @ExceptionHandler({CmHandleRegistrationException.class, DmiException.class})
public static ResponseEntity<Object> handleAnyOtherDmiExceptions(final DmiException exception) {
return buildErrorResponse(HttpStatus.INTERNAL_SERVER_ERROR, exception);
}
diff --git a/src/main/java/org/onap/cps/ncmp/dmi/model/CmHandleOperation.java b/src/main/java/org/onap/cps/ncmp/dmi/model/CmHandleOperation.java
new file mode 100644
index 00000000..8ddd42f8
--- /dev/null
+++ b/src/main/java/org/onap/cps/ncmp/dmi/model/CmHandleOperation.java
@@ -0,0 +1,35 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2021 Nordix Foundation
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import java.util.List;
+import lombok.Getter;
+import lombok.Setter;
+
+@JsonInclude(JsonInclude.Include.NON_NULL)
+@Getter
+@Setter
+public class CmHandleOperation {
+
+ private String dmiPlugin;
+ private List<CreatedCmHandle> createdCmHandles;
+} \ No newline at end of file
diff --git a/src/main/java/org/onap/cps/ncmp/dmi/model/CreatedCmHandle.java b/src/main/java/org/onap/cps/ncmp/dmi/model/CreatedCmHandle.java
new file mode 100644
index 00000000..9198d7da
--- /dev/null
+++ b/src/main/java/org/onap/cps/ncmp/dmi/model/CreatedCmHandle.java
@@ -0,0 +1,36 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2021 Nordix Foundation
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import java.util.Map;
+import lombok.Getter;
+import lombok.Setter;
+
+@JsonInclude(JsonInclude.Include.NON_NULL)
+@Getter
+@Setter
+public class CreatedCmHandle {
+
+ private String cmHandle;
+ private Map<String, String> cmHandleProperties;
+
+} \ No newline at end of file
diff --git a/src/main/java/org/onap/cps/ncmp/dmi/rest/controller/DmiRestController.java b/src/main/java/org/onap/cps/ncmp/dmi/rest/controller/DmiRestController.java
index 8081b73d..0e1d3d67 100644
--- a/src/main/java/org/onap/cps/ncmp/dmi/rest/controller/DmiRestController.java
+++ b/src/main/java/org/onap/cps/ncmp/dmi/rest/controller/DmiRestController.java
@@ -20,7 +20,12 @@
package org.onap.cps.ncmp.dmi.rest.controller;
+import java.util.List;
+import javax.validation.Valid;
+import lombok.extern.slf4j.Slf4j;
+import org.onap.cps.ncmp.dmi.model.CmHandles;
import org.onap.cps.ncmp.dmi.rest.api.DmiPluginApi;
+import org.onap.cps.ncmp.dmi.rest.api.DmiPluginInternalApi;
import org.onap.cps.ncmp.dmi.service.DmiService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
@@ -30,7 +35,8 @@ import org.springframework.web.bind.annotation.RestController;
@RequestMapping("${rest.api.dmi-base-path}")
@RestController
-public class DmiRestController implements DmiPluginApi {
+@Slf4j
+public class DmiRestController implements DmiPluginApi, DmiPluginInternalApi {
private DmiService dmiService;
@@ -45,4 +51,19 @@ public class DmiRestController implements DmiPluginApi {
final String modulesListAsJson = dmiService.getModulesForCmHandle(cmHandle);
return new ResponseEntity<>(modulesListAsJson, HttpStatus.OK);
}
+
+ /**
+ * This method register given list of cm-handles to ncmp.
+ *
+ * @param cmHandles list of cm-handles
+ * @return (@code ResponseEntity) response entity
+ */
+ public ResponseEntity<String> registerCmHandles(final @Valid CmHandles cmHandles) {
+ final List<String> cmHandlesList = cmHandles.getCmHandles();
+ if (cmHandlesList.isEmpty()) {
+ return new ResponseEntity<>("Need at least one cmHandle to process.", HttpStatus.BAD_REQUEST);
+ }
+ dmiService.registerCmHandles(cmHandlesList);
+ return new ResponseEntity<>("cm-handle registered successfully.", HttpStatus.CREATED);
+ }
}
diff --git a/src/main/java/org/onap/cps/ncmp/dmi/service/DmiService.java b/src/main/java/org/onap/cps/ncmp/dmi/service/DmiService.java
index e595bd5f..d9196ecb 100644
--- a/src/main/java/org/onap/cps/ncmp/dmi/service/DmiService.java
+++ b/src/main/java/org/onap/cps/ncmp/dmi/service/DmiService.java
@@ -20,6 +20,7 @@
package org.onap.cps.ncmp.dmi.service;
+import java.util.List;
import org.onap.cps.ncmp.dmi.exception.DmiException;
/**
@@ -36,4 +37,12 @@ public interface DmiService {
*/
String getModulesForCmHandle(String cmHandle) throws DmiException;
+ /**
+ * This method used to register the given {@code CmHandles}
+ * which contains list of {@code CmHandle} to cps repository.
+ *
+ * @param cmHandles list of cm-handles
+ */
+ void registerCmHandles(List<String> cmHandles);
+
}
diff --git a/src/main/java/org/onap/cps/ncmp/dmi/service/DmiServiceImpl.java b/src/main/java/org/onap/cps/ncmp/dmi/service/DmiServiceImpl.java
index 4367bf45..990a421e 100644
--- a/src/main/java/org/onap/cps/ncmp/dmi/service/DmiServiceImpl.java
+++ b/src/main/java/org/onap/cps/ncmp/dmi/service/DmiServiceImpl.java
@@ -20,22 +20,51 @@
package org.onap.cps.ncmp.dmi.service;
-import io.micrometer.core.instrument.util.StringUtils;
+import com.fasterxml.jackson.core.JsonProcessingException;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import java.util.ArrayList;
+import java.util.List;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.groovy.parser.antlr4.util.StringUtils;
+import org.onap.cps.ncmp.dmi.config.DmiPluginConfig.DmiPluginProperties;
+import org.onap.cps.ncmp.dmi.exception.CmHandleRegistrationException;
import org.onap.cps.ncmp.dmi.exception.DmiException;
import org.onap.cps.ncmp.dmi.exception.ModulesNotFoundException;
+import org.onap.cps.ncmp.dmi.model.CmHandleOperation;
+import org.onap.cps.ncmp.dmi.model.CreatedCmHandle;
+import org.onap.cps.ncmp.dmi.service.client.NcmpRestClient;
import org.onap.cps.ncmp.dmi.service.operation.SdncOperations;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.stereotype.Service;
+
@Service
+@Slf4j
public class DmiServiceImpl implements DmiService {
private SdncOperations sdncOperations;
+ private NcmpRestClient ncmpRestClient;
+ private ObjectMapper objectMapper;
+ private DmiPluginProperties dmiPluginProperties;
+ /**
+ * Constructor.
+ *
+ * @param dmiPluginProperties dmiPluginProperties
+ * @param ncmpRestClient ncmpRestClient
+ * @param objectMapper objectMapper
+ * @param sdncOperations sdncOperations
+ */
@Autowired
- public DmiServiceImpl(final SdncOperations sdncOperations) {
+ public DmiServiceImpl(final DmiPluginProperties dmiPluginProperties,
+ final NcmpRestClient ncmpRestClient,
+ final ObjectMapper objectMapper,
+ final SdncOperations sdncOperations) {
+ this.dmiPluginProperties = dmiPluginProperties;
+ this.ncmpRestClient = ncmpRestClient;
+ this.objectMapper = objectMapper;
this.sdncOperations = sdncOperations;
}
@@ -53,4 +82,30 @@ public class DmiServiceImpl implements DmiService {
"response code : " + responseEntity.getStatusCode() + " message : " + responseEntity.getBody());
}
}
+
+ @Override
+ public void registerCmHandles(final List<String> cmHandles) {
+ final CmHandleOperation cmHandleOperation = new CmHandleOperation();
+ cmHandleOperation.setDmiPlugin(dmiPluginProperties.getDmiServiceName());
+ final List<CreatedCmHandle> createdCmHandleList = new ArrayList<>();
+ for (final String cmHandle: cmHandles) {
+ final CreatedCmHandle createdCmHandle = new CreatedCmHandle();
+ createdCmHandle.setCmHandle(cmHandle);
+ createdCmHandleList.add(createdCmHandle);
+ }
+ cmHandleOperation.setCreatedCmHandles(createdCmHandleList);
+ final String cmHandlesJson;
+ try {
+ cmHandlesJson = objectMapper.writeValueAsString(cmHandleOperation);
+ } catch (final JsonProcessingException e) {
+ log.error("Parsing error occurred while converting cm-handles to JSON {}", cmHandles);
+ throw new DmiException("Internal Server Error.",
+ "Parsing error occurred while converting given cm-handles object list to JSON ");
+ }
+ final ResponseEntity<String> responseEntity = ncmpRestClient.registerCmHandlesWithNcmp(cmHandlesJson);
+ if (!(responseEntity.getStatusCode() == HttpStatus.CREATED)) {
+ throw new CmHandleRegistrationException(responseEntity.getBody());
+ }
+ }
+
}
diff --git a/src/main/resources/application.yml b/src/main/resources/application.yml
index 408fc103..47b80786 100644
--- a/src/main/resources/application.yml
+++ b/src/main/resources/application.yml
@@ -20,6 +20,10 @@
server:
port: 8080
+dmi:
+ service:
+ name: onap-dmi-plugin
+
rest:
api:
dmi-base-path: /dmi/api
@@ -61,3 +65,12 @@ sdnc:
auth:
username: ${SDNC_USERNAME}
password: ${SDNC_PASSWORD}
+
+logging:
+ level:
+ org.springframework: ERROR
+ org.onap.cps: DEBUG
+ pattern:
+ console: "%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"
+ file: "%d %p %c{1.} [%t] %m%n"
+ file: dmi.log
diff --git a/src/test/groovy/org/onap/cps/ncmp/dmi/rest/controller/DmiRestControllerSpec.groovy b/src/test/groovy/org/onap/cps/ncmp/dmi/rest/controller/DmiRestControllerSpec.groovy
index f249de92..993b80c6 100644
--- a/src/test/groovy/org/onap/cps/ncmp/dmi/rest/controller/DmiRestControllerSpec.groovy
+++ b/src/test/groovy/org/onap/cps/ncmp/dmi/rest/controller/DmiRestControllerSpec.groovy
@@ -56,8 +56,8 @@ class DmiRestControllerSpec extends Specification {
mockDmiService.getModulesForCmHandle('node1') >> someJson
when: 'post is being called'
def response = mvc.perform( post(getModuleUrl)
- .contentType(MediaType.APPLICATION_JSON))
- .andReturn().response
+ .contentType(MediaType.APPLICATION_JSON))
+ .andReturn().response
then: 'status is OK'
response.status == HttpStatus.OK.value()
and: 'the response content matches the result from the DMI service'
@@ -81,4 +81,35 @@ class DmiRestControllerSpec extends Specification {
'no modules found' | ModulesNotFoundException.class || HttpStatus.NOT_FOUND.value()
'any other runtime exception' | RuntimeException.class || HttpStatus.INTERNAL_SERVER_ERROR.value()
}
+
+ def 'Register given list of cm handles.'() {
+ given: 'register cm handle url and cm handles json'
+ def registerCmhandlesPost = "${basePathV1}/inventory/cmHandles"
+ def cmHandleJson = '{"cmHandles":["node1", "node2"]}'
+ when: 'post register cm handles api is invoked'
+ def response = mvc.perform(
+ post(registerCmhandlesPost)
+ .contentType(MediaType.APPLICATION_JSON)
+ .content(cmHandleJson)
+ ).andReturn().response
+ then: 'register cm handles in dmi service is called once'
+ 1 * mockDmiService.registerCmHandles(_ as List<String>)
+ and: 'response status is created'
+ response.status == HttpStatus.CREATED.value()
+ }
+
+ def 'register cm handles called with empty content.'() {
+ given: 'register cm handle url and empty json'
+ def registerCmhandlesPost = "${basePathV1}/inventory/cmHandles"
+ def emptyJson = '{"cmHandles":[]}'
+ when: 'register cm handles post api is invoked with no content'
+ def response = mvc.perform(
+ post(registerCmhandlesPost).contentType(MediaType.APPLICATION_JSON)
+ .content(emptyJson)
+ ).andReturn().response
+ then: 'response status is "bad request"'
+ response.status == HttpStatus.BAD_REQUEST.value()
+ and: 'dmi service is not called'
+ 0 * mockDmiService.registerCmHandles(_)
+ }
}
diff --git a/src/test/groovy/org/onap/cps/ncmp/dmi/service/DmiServiceImplSpec.groovy b/src/test/groovy/org/onap/cps/ncmp/dmi/service/DmiServiceImplSpec.groovy
index 66612960..9d6bc358 100644
--- a/src/test/groovy/org/onap/cps/ncmp/dmi/service/DmiServiceImplSpec.groovy
+++ b/src/test/groovy/org/onap/cps/ncmp/dmi/service/DmiServiceImplSpec.groovy
@@ -20,8 +20,13 @@
package org.onap.cps.ncmp.dmi.service
+import com.fasterxml.jackson.core.JsonProcessingException
+import com.fasterxml.jackson.databind.ObjectMapper
+import org.onap.cps.ncmp.dmi.config.DmiPluginConfig
+import org.onap.cps.ncmp.dmi.exception.CmHandleRegistrationException
import org.onap.cps.ncmp.dmi.exception.DmiException
import org.onap.cps.ncmp.dmi.exception.ModulesNotFoundException
+import org.onap.cps.ncmp.dmi.service.client.NcmpRestClient
import org.onap.cps.ncmp.dmi.service.operation.SdncOperations
import org.springframework.http.HttpStatus
import org.springframework.http.ResponseEntity
@@ -29,13 +34,13 @@ import spock.lang.Specification
class DmiServiceImplSpec extends Specification {
- def objectUnderTest = new DmiServiceImpl()
+ def mockNcmpRestClient = Mock(NcmpRestClient)
+ def mockDmiPluginProperties = Mock(DmiPluginConfig.DmiPluginProperties)
+ def objectMapper = new ObjectMapper()
+ def mockObjectMapper = Mock(ObjectMapper)
def mockSdncOperations = Mock(SdncOperations)
-
- def setup() {
- objectUnderTest.sdncOperations = mockSdncOperations
- }
+ def objectUnderTest = new DmiServiceImpl(mockDmiPluginProperties, mockNcmpRestClient, objectMapper, mockSdncOperations)
def 'Call get modules for cm-handle on dmi Service.'() {
given: 'cm handle id'
@@ -70,4 +75,45 @@ class DmiServiceImplSpec extends Specification {
then: 'ModulesNotFoundException is thrown'
thrown( ModulesNotFoundException )
}
+
+ def 'Register cm handles with ncmp.'() {
+ given: 'cm-handle list and json payload'
+ def givenCmHandlesList = ['node1', 'node2']
+ def expectedJson = '{"dmiPlugin":"test-dmi-service","createdCmHandles":[{"cmHandle":"node1"},{"cmHandle":"node2"}]}'
+ and: 'mockDmiPluginProperties returns test-dmi-service'
+ mockDmiPluginProperties.getDmiServiceName() >> 'test-dmi-service'
+ when: 'register cm handles service method with the given cm handles'
+ objectUnderTest.registerCmHandles(givenCmHandlesList)
+ then: 'register cm handle with ncmp called once and return "created" status'
+ 1 * mockNcmpRestClient.registerCmHandlesWithNcmp(expectedJson) >> new ResponseEntity<>(HttpStatus.CREATED)
+ }
+
+ def 'Register cm handles with ncmp called with exception #scenario.'() {
+ given: 'cm-handle list'
+ def cmHandlesList = ['node1', 'node2']
+ and: 'dmi plugin service name is "test-dmi-service"'
+ mockDmiPluginProperties.getDmiServiceName() >> 'test-dmi-service'
+ and: 'ncmp rest client returns #responseEntity'
+ mockNcmpRestClient.registerCmHandlesWithNcmp(_ as String) >> responseEntity
+ when: 'register cm handles service method called'
+ objectUnderTest.registerCmHandles(cmHandlesList)
+ then: 'a registration exception is thrown'
+ thrown(CmHandleRegistrationException.class)
+ where: 'given #scenario'
+ scenario | responseEntity
+ 'ncmp rest client returns bad request' | new ResponseEntity<>(HttpStatus.BAD_REQUEST)
+ 'ncmp rest client returns internal server error'| new ResponseEntity<>(HttpStatus.INTERNAL_SERVER_ERROR)
+ }
+
+ def 'Register cm handles with ncmp with wrong data.'() {
+ given: 'objectMapper mock and cm-handle list'
+ def cmHandlesList = ['node1', 'node2']
+ and: 'objectMapper returns "JsonProcessingException" during parse'
+ objectUnderTest.objectMapper = mockObjectMapper
+ mockObjectMapper.writeValueAsString(_) >> { throw new JsonProcessingException('some error.') }
+ when: 'register cm handles service method called'
+ objectUnderTest.registerCmHandles(cmHandlesList)
+ then: 'a dmi exception is thrown'
+ thrown(DmiException.class)
+ }
}
diff --git a/src/test/java/org/onap/cps/ncmp/dmi/TestUtils.java b/src/test/java/org/onap/cps/ncmp/dmi/TestUtils.java
new file mode 100644
index 00000000..b82a6f5c
--- /dev/null
+++ b/src/test/java/org/onap/cps/ncmp/dmi/TestUtils.java
@@ -0,0 +1,53 @@
+/*
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2021 Nordix Foundation
+ * ================================================================================
+ * 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.cps.ncmp.dmi;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+
+/**
+ * Common convenience methods for testing.
+ */
+public class TestUtils {
+
+ /**
+ * Convert a file in the test resource folder to file.
+ *
+ * @param filename to name of the file in test/resources
+ * @return the file
+ * @throws IOException when there is an IO issue
+ */
+ public static File readFile(final String filename) {
+ return new File(ClassLoader.getSystemClassLoader().getResource(filename).getFile());
+ }
+
+ /**
+ * Convert a file in the test resource folder to a string.
+ *
+ * @param filename to name of the file in test/resources
+ * @return the content of the file as a String
+ * @throws IOException when there is an IO issue
+ */
+ public static String getResourceFileContent(final String filename) throws IOException {
+ final File file = readFile(filename);
+ return new String(Files.readAllBytes(file.toPath()));
+ }
+}