sli/provider/src/test/java/org/openecomp/sdnc/sli/provider/SvcLogicExpressionResolverTest.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * openECOMP : SDN-C
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights
   6  *                         reserved.
   7  * ================================================================================
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *      http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * Unless required by applicable law or agreed to in writing, software
  15  * distributed under the License is distributed on an "AS IS" BASIS,
  16  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  17  * See the License for the specific language governing permissions and
  18  * limitations under the License.
  19  * ============LICENSE_END=========================================================
  20  */
  21
  22 package org.openecomp.sdnc.sli.provider;
  23
  24 import java.io.BufferedReader;
  25 import java.io.InputStream;
  26 import java.io.InputStreamReader;
  27
  28 import org.openecomp.sdnc.sli.SvcLogicContext;
  29 import org.openecomp.sdnc.sli.SvcLogicExprListener;
  30 import org.openecomp.sdnc.sli.SvcLogicExpression;
  31 import org.openecomp.sdnc.sli.SvcLogicExpressionFactory;
  32 import org.openecomp.sdnc.sli.SvcLogicGraph;
  33 import org.openecomp.sdnc.sli.SvcLogicNode;
  34 import org.openecomp.sdnc.sli.provider.SvcLogicExpressionResolver;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 import junit.framework.TestCase;
  39
  40 public class SvcLogicExpressionResolverTest extends TestCase {
  41
  42
  43         private static final Logger LOG = LoggerFactory
  44                         .getLogger(SvcLogicExpressionResolver.class);
  45
  46         public void testEvaluate()
  47         {
  48                 InputStream testStr = getClass().getResourceAsStream("/expression.tests");
  49                 BufferedReader testsReader = new BufferedReader(new InputStreamReader(testStr));
  50
  51                 try
  52                 {
  53                         String testExpr = null;
  54                         SvcLogicContext ctx = new SvcLogicContext();
  55                         SvcLogicGraph graph = new SvcLogicGraph();
  56                         SvcLogicNode node = new SvcLogicNode(1, "return", graph);
  57                         graph.setRootNode(node);
  58
  59                         while ((testExpr = testsReader.readLine()) != null) {
  60                                 testExpr = testExpr.trim();
  61                                 if (testExpr.startsWith("#"))
  62                                 {
  63                                         testExpr = testExpr.substring(1).trim();
  64                                         String[] nameValue = testExpr.split("=");
  65                                         String name = nameValue[0].trim();
  66                                         String value = nameValue[1].trim();
  67
  68                                         if (name.startsWith("$"))
  69                                         {
  70                                                 LOG.info("Setting context attribute "+name+" = "+value);
  71                                                 ctx.setAttribute(name.substring(1), value);
  72                                         }
  73                                         else
  74                                         {
  75
  76                                                 LOG.info("Setting node attribute "+name+" = "+value);
  77                                                 node.setAttribute(name, value);
  78
  79                                         }
  80                                 }
  81                                 else
  82                                 {
  83                                         LOG.info("Parsing expression "+testExpr);
  84                                         SvcLogicExpression expr = SvcLogicExpressionFactory.parse(testExpr);
  85                                         if (expr == null)
  86                                         {
  87                                                 fail("Unable to parse expression "+testExpr);
  88                                         }
  89                                         else
  90                                         {
  91                                                 LOG.info("Evaluating parsed expression "+expr.asParsedExpr());
  92                                                 String exprValue = SvcLogicExpressionResolver.evaluate(expr,  node, ctx);
  93                                                 if (exprValue == null)
  94                                                 {
  95                                                         fail("Unable to evaluate expression "+testExpr);
  96                                                 }
  97                                                 else
  98                                                 {
  99                                                         LOG.info("Expression "+testExpr+" evaluates to "+exprValue);
 100                                                 }
 101                                         }
 102                                 }
 103                         }
 104                 }
 105                 catch (Exception e)
 106                 {
 107                         LOG.error("Caught exception", e);
 108                         fail("Caught exception");
 109                 }
 110         }
 111
 112 }