sli/provider/src/test/java/org/onap/ccsdk/sli/core/sli/provider/SvcLogicExpressionResolverTest.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP : CCSDK
   4  * ================================================================================
   5  * Copyright (C) 2017 ONAP
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.ccsdk.sli.core.sli.provider;
  22
  23 import java.io.BufferedReader;
  24 import java.io.InputStream;
  25 import java.io.InputStreamReader;
  26
  27 import org.onap.ccsdk.sli.core.sli.SvcLogicContext;
  28 import org.onap.ccsdk.sli.core.sli.SvcLogicExprListener;
  29 import org.onap.ccsdk.sli.core.sli.SvcLogicExpression;
  30 import org.onap.ccsdk.sli.core.sli.SvcLogicExpressionFactory;
  31 import org.onap.ccsdk.sli.core.sli.SvcLogicGraph;
  32 import org.onap.ccsdk.sli.core.sli.SvcLogicNode;
  33 import org.onap.ccsdk.sli.core.sli.provider.SvcLogicExpressionResolver;
  34 import org.slf4j.Logger;
  35 import org.slf4j.LoggerFactory;
  36
  37 import junit.framework.Assert;
  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                         SvcLogicContext ctx = new SvcLogicContext();
  54                         SvcLogicGraph graph = new SvcLogicGraph();
  55                         SvcLogicNode node = new SvcLogicNode(1, "return", graph);
  56                         graph.setRootNode(node);
  57
  58                         String line = null;
  59                         int lineNo = 0;
  60                         while ((line = testsReader.readLine()) != null) {
  61                                 ++lineNo;
  62                                 if (line.startsWith("#"))
  63                                 {
  64                                         String testExpr = line.trim().substring(1).trim();
  65                                         String[] nameValue = testExpr.split("=");
  66                                         String name = nameValue[0].trim();
  67                                         String value = nameValue[1].trim();
  68
  69                                         if (name.startsWith("$"))
  70                                         {
  71                                                 LOG.info("Setting context attribute "+name+" = "+value);
  72                                                 ctx.setAttribute(name.substring(1), value);
  73                                         }
  74                                         else
  75                                         {
  76
  77                                                 LOG.info("Setting node attribute "+name+" = "+value);
  78                                                 node.setAttribute(name, value);
  79
  80                                         }
  81                                 }
  82                                 else
  83                                 {
  84                                         // if the line contains #, what comes before is the expression to evaluate, and what comes after
  85                                         // is the expected value
  86                                         String[] substrings = line.split("#");
  87                                         String expectedValue = substrings.length > 1 ? substrings[1].trim() : null;
  88                                         String testExpr = substrings[0].trim();
  89
  90                                         LOG.info("Parsing expression "+testExpr);
  91                                         SvcLogicExpression expr = SvcLogicExpressionFactory.parse(testExpr);
  92                                         if (expr == null)
  93                                         {
  94                                                 fail("Unable to parse expression "+testExpr);
  95                                         }
  96                                         else
  97                                         {
  98                                                 LOG.info("Evaluating parsed expression "+expr.asParsedExpr());
  99                                                 String exprValue = SvcLogicExpressionResolver.evaluate(expr,  node, ctx);
 100                                                 if (exprValue == null)
 101                                                 {
 102                                                         fail("Unable to evaluate expression "+testExpr);
 103                                                 }
 104                                                 else
 105                                                 {
 106                                                         LOG.info("Expression " + testExpr + " evaluates to " + exprValue);
 107                                                         if (expectedValue != null) {
 108                                                                 Assert.assertEquals("Line " + lineNo + ": " + testExpr, expectedValue, exprValue);
 109                                                         }
 110                                                 }
 111                                         }
 112                                 }
 113                         }
 114                 }
 115                 catch (Exception e)
 116                 {
 117                         LOG.error("Caught exception", e);
 118                         fail("Caught exception");
 119                 }
 120         }
 121
 122 }