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.Assert;
  39 import junit.framework.TestCase;
  40
  41 public class SvcLogicExpressionResolverTest extends TestCase {
  42
  43
  44         private static final Logger LOG = LoggerFactory
  45                         .getLogger(SvcLogicExpressionResolver.class);
  46
  47         public void testEvaluate()
  48         {
  49                 InputStream testStr = getClass().getResourceAsStream("/expression.tests");
  50                 BufferedReader testsReader = new BufferedReader(new InputStreamReader(testStr));
  51
  52                 try
  53                 {
  54                         SvcLogicContext ctx = new SvcLogicContext();
  55                         SvcLogicGraph graph = new SvcLogicGraph();
  56                         SvcLogicNode node = new SvcLogicNode(1, "return", graph);
  57                         graph.setRootNode(node);
  58
  59                         String line = null;
  60                         int lineNo = 0;
  61                         while ((line = testsReader.readLine()) != null) {
  62                                 ++lineNo;
  63                                 if (line.startsWith("#"))
  64                                 {
  65                                         String testExpr = line.trim().substring(1).trim();
  66                                         String[] nameValue = testExpr.split("=");
  67                                         String name = nameValue[0].trim();
  68                                         String value = nameValue[1].trim();
  69
  70                                         if (name.startsWith("$"))
  71                                         {
  72                                                 LOG.info("Setting context attribute "+name+" = "+value);
  73                                                 ctx.setAttribute(name.substring(1), value);
  74                                         }
  75                                         else
  76                                         {
  77
  78                                                 LOG.info("Setting node attribute "+name+" = "+value);
  79                                                 node.setAttribute(name, value);
  80
  81                                         }
  82                                 }
  83                                 else
  84                                 {
  85                                         // if the line contains #, what comes before is the expression to evaluate, and what comes after
  86                                         // is the expected value
  87                                         String[] substrings = line.split("#");
  88                                         String expectedValue = substrings.length > 1 ? substrings[1].trim() : null;
  89                                         String testExpr = substrings[0].trim();
  90
  91                                         LOG.info("Parsing expression "+testExpr);
  92                                         SvcLogicExpression expr = SvcLogicExpressionFactory.parse(testExpr);
  93                                         if (expr == null)
  94                                         {
  95                                                 fail("Unable to parse expression "+testExpr);
  96                                         }
  97                                         else
  98                                         {
  99                                                 LOG.info("Evaluating parsed expression "+expr.asParsedExpr());
 100                                                 String exprValue = SvcLogicExpressionResolver.evaluate(expr,  node, ctx);
 101                                                 if (exprValue == null)
 102                                                 {
 103                                                         fail("Unable to evaluate expression "+testExpr);
 104                                                 }
 105                                                 else
 106                                                 {
 107                                                         LOG.info("Expression " + testExpr + " evaluates to " + exprValue);
 108                                                         if (expectedValue != null) {
 109                                                                 Assert.assertEquals("Line " + lineNo + ": " + testExpr, expectedValue, exprValue);
 110                                                         }
 111                                                 }
 112                                         }
 113                                 }
 114                         }
 115                 }
 116                 catch (Exception e)
 117                 {
 118                         LOG.error("Caught exception", e);
 119                         fail("Caught exception");
 120                 }
 121         }
 122
 123 }