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diff --git a/src/test/groovy/org/onap/cps/ncmp/dmi/service/YangResourceExtractorSpec.groovy b/src/test/groovy/org/onap/cps/ncmp/dmi/service/YangResourceExtractorSpec.groovy
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+/*
+ * ============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.service
+
+import com.google.gson.JsonSyntaxException
+import org.onap.cps.ncmp.dmi.exception.ModuleResourceNotFoundException
+import org.onap.cps.ncmp.dmi.service.model.ModuleReference
+import org.springframework.http.ResponseEntity
+import spock.lang.Specification
+
+class YangResourceExtractorSpec extends Specification {
+
+ static def BACK_SLASH = '\\';
+ static def NEW_LINE = '\n';
+ static def QUOTE = '"';
+ static def TAB = '\t';
+
+ static def YANG_ESCAPED_NEW_LINE = '\\n'
+ static def YANG_ESCAPED_BACK_SLASH = '\\\\'
+ static def YANG_ESCAPED_QUOTE = '\\"'
+ static def YANG_ESCAPED_TAB = '\\t'
+
+ static def SDNC_OUTPUT_JSON_NAME = '"ietf-netconf-monitoring:output"'
+
+ def moduleReference = new ModuleReference(name: 'test', revision: 'rev')
+ def responseEntity = Mock(ResponseEntity)
+
+ def 'Extract yang resource with escaped characters in the source.'() {
+ given: 'a response entity with a data field of value #jsonValue'
+ responseEntity.getBody() >> '{' + SDNC_OUTPUT_JSON_NAME + ': { "data": "' + jsonValue + '" }}'
+ when: 'the yang resource is extracted'
+ def result = YangResourceExtractor.toYangResource(moduleReference, responseEntity)
+ then: 'the yang source string is as expected'
+ result.getYangSource() == expectedString
+ where: 'the following data is used'
+ jsonValue || expectedString
+ 'line1' + YANG_ESCAPED_NEW_LINE + 'line2' || 'line1' + NEW_LINE + 'line2'
+ 'a' + YANG_ESCAPED_BACK_SLASH+'b' || 'a'+BACK_SLASH +'b'
+ 'a' + YANG_ESCAPED_QUOTE + 'b' || 'a'+QUOTE+'b'
+ 'a' + YANG_ESCAPED_TAB + 'b' || 'a'+TAB+'b'
+ }
+
+ def 'Extract yang resource with escaped characters in the source inside escaped double quotes.'() {
+ given: 'a response entity with a data field of value #jsonValue wrapped in escaped double quotes'
+ responseEntity.getBody() >> '{' + SDNC_OUTPUT_JSON_NAME + ': { "data": "' + YANG_ESCAPED_QUOTE + jsonValue + YANG_ESCAPED_QUOTE + '" }}'
+ when: 'the yang resource is extracted'
+ def result = YangResourceExtractor.toYangResource(moduleReference, responseEntity)
+ then: 'the yang source string is as expected'
+ result.getYangSource() == expectedString
+ where: 'the following data is used'
+ jsonValue || expectedString
+ 'line1' + YANG_ESCAPED_NEW_LINE + 'line2' || '"line1' + NEW_LINE + 'line2"'
+ 'a' + YANG_ESCAPED_BACK_SLASH+'b' || '"a'+BACK_SLASH +'b"'
+ 'a' + YANG_ESCAPED_QUOTE + 'b' || '"a'+QUOTE+'b"'
+ 'a' + YANG_ESCAPED_TAB + 'b' || '"a'+TAB+'b"'
+ }
+
+ def 'Attempt to extract yang resource with un-escaped double quotes in the source.'() {
+ given: 'a response entity with a data field with unescaped double quotes'
+ responseEntity.getBody() >> '{' + SDNC_OUTPUT_JSON_NAME + ': { "data": "' + QUOTE + 'some data' + QUOTE + '" }}'
+ when: 'Json is converted to String'
+ YangResourceExtractor.toYangResource(moduleReference, responseEntity)
+ then: 'the output of the method is equal to the output from the test template'
+ thrown(JsonSyntaxException)
+ }
+
+ def 'Attempt to extract yang resource without #without.'() {
+ given: 'a response entity with a body without #without'
+ responseEntity.getBody() >> jsonBody
+ when: 'Json is converted to String'
+ YangResourceExtractor.toYangResource(moduleReference, responseEntity)
+ then: 'the output of the method is equal to the output from the test template'
+ thrown(ModuleResourceNotFoundException)
+ where:
+ without | jsonBody
+ 'data' | '{' + SDNC_OUTPUT_JSON_NAME + ': { "something": "else" }}'
+ SDNC_OUTPUT_JSON_NAME | '{"something:else": { "data": "data" }}'
+ }
+
+}