Source Code Cross Referenced for TestCodeExtractor.java in  » Testing » KeY » de » uka » ilkd » key » unittest » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Testing » KeY » de.uka.ilkd.key.unittest 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        // This file is part of KeY - Integrated Deductive Software Design
002:        // Copyright (C) 2001-2007 Universitaet Karlsruhe, Germany
003:        //                         Universitaet Koblenz-Landau, Germany
004:        //                         Chalmers University of Technology, Sweden
005:        //
006:        // The KeY system is protected by the GNU General Public License. 
007:        // See LICENSE.TXT for details.
008:        package de.uka.ilkd.key.unittest;
009:
010:        import de.uka.ilkd.key.java.*;
011:        import de.uka.ilkd.key.java.declaration.*;
012:        import de.uka.ilkd.key.java.reference.*;
013:        import de.uka.ilkd.key.java.statement.*;
014:        import de.uka.ilkd.key.java.visitor.*;
015:        import de.uka.ilkd.key.java.expression.operator.*;
016:        import de.uka.ilkd.key.logic.op.*;
017:        import de.uka.ilkd.key.logic.*;
018:        import de.uka.ilkd.key.proof.*;
019:        import de.uka.ilkd.key.visualization.*;
020:
021:        import java.util.*;
022:
023:        /**
024:         * Extracts the code, for which we want to create a unittest, from a formula
025:         * of the form: &lt updates&gt \\&lt code\\&gt post.
026:         */
027:        public class TestCodeExtractor {
028:
029:            //    private Term modTerm;
030:            private Services serv;
031:            private ExecutionTraceModel tr;
032:
033:            private Statement[] testCode = null;
034:            private Term post = null;
035:            private PackageReference context = null;
036:            private StatementBlock sb = null;
037:
038:            // the name of the file the method under test is located in
039:            private String fileName = null;
040:            // the package of the containing class
041:            //    private String packageName = null;
042:            // the method we want to test
043:            private String methodName = null;
044:            private static int testCounter = 0;
045:            private Namespace newPVs = new Namespace();
046:            private Namespace pvn;
047:
048:            public TestCodeExtractor(ExecutionTraceModel tr, Services serv,
049:                    Namespace pvn) {
050:                this .tr = tr;
051:                this .serv = serv;
052:                this .pvn = pvn;
053:            }
054:
055:            public Statement[] extractTestCode() {
056:                if (testCode != null) {
057:                    return testCode;
058:                }
059:                Semisequent succ = getNodeForCodeExtraction(tr).sequent()
060:                        .succedent();
061:                for (int i = 0; i < succ.size(); i++) {
062:                    Term current = succ.get(i).formula();
063:                    ListOfStatement statements = SLListOfStatement.EMPTY_LIST;
064:                    //TODO: Resolve data dependencies in simultaneous updates.
065:                    while (current.op() instanceof  IUpdateOperator) {
066:                        statements = statements.append(getAssignments(current));
067:                        current = current.sub(current.op().arity() - 1);
068:                    }
069:                    if (current.op() instanceof  Modality) {
070:                        post = current.sub(0);
071:                        sb = (StatementBlock) current.javaBlock().program();
072:                        collectUndeclaredVariables(sb);
073:                        statements = statements.append(flatten(sb));
074:                        testCode = statements.toArray();
075:                        return testCode;
076:                    }
077:                }
078:                throw new NotTranslatableException("Could not extract testcode");
079:            }
080:
081:            /**
082:             * Collects variables not explicitely declared in the IUT.
083:             */
084:            private void collectUndeclaredVariables(StatementBlock sb) {
085:                JavaASTCollector coll = new JavaASTCollector(sb,
086:                        ProgramVariable.class);
087:                coll.start();
088:                ListOfProgramElement l = coll.getNodes();
089:                IteratorOfProgramElement it = l.iterator();
090:                while (it.hasNext()) {
091:                    ProgramVariable pv = (ProgramVariable) it.next();
092:                    if (pvn.lookup(pv.name()) == pv) {
093:                        newPVs.add(pv);
094:                    }
095:                }
096:                coll = new JavaASTCollector(sb, LocalVariableDeclaration.class);
097:                coll.start();
098:                l = coll.getNodes();
099:                it = l.iterator();
100:                ListOfNamed lon = newPVs.allElements();
101:                while (it.hasNext()) {
102:                    LocalVariableDeclaration lvd = (LocalVariableDeclaration) it
103:                            .next();
104:                    ArrayOfVariableSpecification vars = lvd.getVariables();
105:                    for (int i = 0; i < vars.size(); i++) {
106:                        IProgramVariable pv = vars.getVariableSpecification(i)
107:                                .getProgramVariable();
108:                        if (pvn.lookup(pv.name()) == pv) {
109:                            lon = lon.removeAll(pv);
110:                        }
111:                    }
112:                }
113:                newPVs = new Namespace();
114:                while (!lon.isEmpty()) {
115:                    newPVs.add(lon.head());
116:                    lon = lon.tail();
117:                }
118:            }
119:
120:            public HashSet getStatements() {
121:                if (sb != null) {
122:                    return getStatements(sb);
123:                }
124:                return new HashSet();
125:            }
126:
127:            private HashSet getStatements(StatementBlock sbl) {
128:                HashSet result = new HashSet();
129:                for (int i = 0; i < sbl.getChildCount(); i++) {
130:                    Statement s = sbl.getStatementAt(i);
131:                    if (s instanceof  StatementBlock) {
132:                        result.addAll(getStatements((StatementBlock) s));
133:                    } else if (s instanceof  MethodBodyStatement) {
134:                        JavaASTCollector coll = new JavaASTCollector(
135:                                ((MethodBodyStatement) s).getBody(serv),
136:                                Statement.class);
137:                        coll.start();
138:                        ListOfProgramElement l = coll.getNodes();
139:                        IteratorOfProgramElement it = l.iterator();
140:                        while (it.hasNext()) {
141:                            Statement next = (Statement) it.next();
142:                            if (!(next instanceof  StatementContainer)) {
143:                                result.add(next);
144:                            }
145:                        }
146:                    } else {
147:                        result.add(s);
148:                    }
149:                }
150:                return result;
151:            }
152:
153:            public Node getNodeForCodeExtraction(ExecutionTraceModel tr) {
154:                Node node = tr.getFirstTraceElement().node();
155:                while (!node.root()) {
156:                    node = node.parent();
157:                }
158:                while (node.childrenCount() == 1
159:                        && node != tr.getFirstTraceElement().node()) {
160:                    node = node.child(0);
161:                }
162:                return node;
163:            }
164:
165:            private ListOfStatement flatten(StatementBlock sb) {
166:                ListOfStatement result = SLListOfStatement.EMPTY_LIST;
167:                for (int i = 0; i < sb.getStatementCount(); i++) {
168:                    if (fileName == null) {
169:                        fileName = sb.getStatementAt(i).getPositionInfo()
170:                                .getFileName();
171:                    }
172:                    if (sb.getStatementAt(i) instanceof  StatementBlock) {
173:                        result = result.append(flatten((StatementBlock) sb
174:                                .getStatementAt(i)));
175:                    } else if (sb.getStatementAt(i) instanceof  MethodBodyStatement) {
176:                        result = result
177:                                .append(convertMBSToMethodCall((MethodBodyStatement) sb
178:                                        .getStatementAt(i)));
179:                    } else {
180:                        result = result.append(sb.getStatementAt(i));
181:                    }
182:                }
183:                return result;
184:            }
185:
186:            /**
187:             * Returns the formula from which an oracle for the extracted code can
188:             * be created.
189:             */
190:            public Term getTermForOracle() {
191:                if (post == null) {
192:                    extractTestCode();
193:                }
194:                return post;
195:            }
196:
197:            /**
198:             * Returns the package the code under test is located in.
199:             */
200:            public PackageReference getPackage() {
201:                if (context == null) {
202:                    extractTestCode();
203:                }
204:                return context;
205:            }
206:
207:            /**
208:             * Transforms updates into assignment expressions.
209:             */
210:            private ListOfStatement getAssignments(Term t) {
211:                ListOfStatement result = SLListOfStatement.EMPTY_LIST;
212:                IUpdateOperator uop = (IUpdateOperator) t.op();
213:                for (int i = 0; i < uop.locationCount(); i++) {
214:                    Expression l, r;
215:                    l = (Expression) convertToProgramElement(uop.location(t, i));
216:                    r = (Expression) convertToProgramElement(uop.value(t, i));
217:                    result = result.append(TestGenerator.assignmentOrSet(l, r,
218:                            serv));
219:                }
220:                return result;
221:            }
222:
223:            public Expression convertToProgramElement(Term t) {
224:                t = TestGenerator.replaceConstants(t, serv, newPVs);
225:                return serv.getTypeConverter().convertToProgramElement(t);
226:            }
227:
228:            /**
229:             * Returns the program variables newly introduced as substitution for
230:             * skolem constants and those found in the IUT.
231:             */
232:            public SetOfProgramVariable getNewProgramVariables() {
233:                SetOfProgramVariable result = SetAsListOfProgramVariable.EMPTY_SET;
234:                IteratorOfNamed it = newPVs.allElements().iterator();
235:                while (it.hasNext()) {
236:                    result = result.add((ProgramVariable) it.next());
237:                }
238:                return result;
239:            }
240:
241:            private Statement convertMBSToMethodCall(MethodBodyStatement mbs) {
242:                methodName = mbs.getProgramMethod(serv).getMethodDeclaration()
243:                        .getName();
244:                String sortName = mbs.getProgramMethod(serv).getContainerType()
245:                        .getSort().name().toString();
246:                fileName = sortName.substring(sortName.lastIndexOf(".") + 1,
247:                        sortName.length());
248:                //	if(sortName.lastIndexOf(".")!=-1){
249:                //	    packageName = sortName.substring(0, sortName.lastIndexOf("."));
250:                //	}
251:                MethodReference mr = new MethodReference(mbs.getArguments(),
252:                        new ProgramElementName(mbs.getProgramMethod(serv)
253:                                .getName()), mbs.getProgramMethod(serv)
254:                                .isStatic() ? new TypeRef(mbs.getProgramMethod(
255:                                serv).getContainerType()) : mbs
256:                                .getDesignatedContext());
257:                context = mbs.getProgramMethod(serv).getContainerType()
258:                        .createPackagePrefix();
259:                if (mbs.getResultVariable() != null) {
260:                    ProgramVariable rv = (ProgramVariable) mbs
261:                            .getResultVariable();
262:                    newPVs.add(rv);
263:                    return new CopyAssignment(rv, mr);
264:                } else {
265:                    return mr;
266:                }
267:            }
268:
269:            public String getFileName() {
270:                return (fileName == null ? "Generic" : fileName)
271:                        + (testCounter++);
272:            }
273:
274:            //    public String getPackageName(){
275:            //	return packageName;
276:            //    }
277:
278:            public String getMethodName() {
279:                return (methodName == null ? "code" : methodName);
280:            }
281:
282:        }
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