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Junit_dev_model_transformation
Antonin Abhervé edited this page Sep 3, 2020
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The main objective of the “Create a test case” command when applied to a Class object MyClass is to create a MyClassTest test class in the test model and at the proper place in the test model package hierarchy.
In the src/main/java/org/modelio/junit/command directory, create the Java file named TestCaseCreator.java
And put the following content :(TestCaseCreator.java source file)
1package org.modelio.junit.command;
2
3import org.eclipse.jface.dialogs.MessageDialog;
4import org.eclipse.swt.widgets.Display;
5import org.modelio.api.modelio.model.IModelingSession;
6import org.modelio.api.modelio.model.ITransaction;
7import org.modelio.api.modelio.model.IUmlModel;
8import org.modelio.api.module.IModule;
9import org.modelio.metamodel.mmextensions.infrastructure.ExtensionNotFoundException;
10import org.modelio.metamodel.uml.infrastructure.Dependency;
11import org.modelio.metamodel.uml.infrastructure.Stereotype;
12import org.modelio.metamodel.uml.statik.Class;
13import org.modelio.metamodel.uml.statik.Package;
14
15public class TestCaseCreator {
16
17 public boolean createTestCase(Class classToTest, IModule module) {
18 // Check that there is no already existing test class
19 for (Dependency dep : classToTest.getImpactedDependency()) {
20 if (dep.isStereotyped(module.getName(), "JUnitDependency")) {
21 MessageDialog.openError(Display.getCurrent().getActiveShell(),
22 "Error",
23 "Command cannot be applied: class already has a test case");
24 return false;
25 }
26 }
27
28 IModelingSession session = module.getModuleContext().getModelingSession();
29 try (ITransaction t = session.createTransaction("Create a test case")) {
30 // Build the test class name
31 String testClassName = classToTest.getName() + "Test";
32
33 // Get the package parent of the test class
34 // The getTestCaseParentPackage() returns an IPackage
35 // which is created on the fly if necessary (ok as we are in a transaction)
36 Package testCaseParentPackage = getTestCaseParentPackage(classToTest, module);
37
38 // Create the class using the convenient factory method createClass()
39 Class testClass = createTestClass(session, testClassName, testCaseParentPackage);
40
41 // Add the << JUnit >> stereotype to the class
42 stereotypeTestCase(testClass, module);
43
44 // Link test class to the class to test
45 linkTestCase(classToTest, testClass, module);
46
47 t.commit();
48 return true;
49 } catch (Exception e) {
50 // Report error to the log
51 module.getModuleContext().getLogService().error(e);
52 return false;
53
54 }
55 }
56
57 private Class createTestClass(IModelingSession session, String testClassName, Package testCaseParentPackage) {
58 IUmlModel model = session.getModel();
59 Class testClass = model.createClass(testClassName, testCaseParentPackage);
60 return testClass;
61 }
62
63 private Package getTestCaseParentPackage(Class classToTest, IModule module) {
64 IModelingSession session = module.getModuleContext().getModelingSession();
65 try (ITransaction t = session.createTransaction("Create test hierarchy")) {
66 // Creating/updating the test model hierarchy
67
68 // TODO for now, create the test class in the same package as the class to test
69 Package parent = (Package) classToTest.getOwner();
70
71 t.commit();
72 return parent;
73 } catch (Exception e) {
74 // Report error to the log
75 module.getModuleContext().getLogService().error(e);
76 return null;
77 }
78 }
79
80 private boolean stereotypeTestCase(Class testClass, IModule module) {
81 IModelingSession session = module.getModuleContext().getModelingSession();
82 try (ITransaction t = session.createTransaction("Stereotype a test case")) {
83 Stereotype s = session.getMetamodelExtensions().getStereotype(module.getName(), "JUnit", module.getModuleContext().getModelioServices().getMetamodelService().getMetamodel().getMClass(Class.class));
84 if (s != null) {
85 // Add the stereotype to the class
86 testClass.getExtension().add(s);
87 t.commit();
88 return true;
89 } else {
90 MessageDialog.openError(Display.getCurrent().getActiveShell(),
91 "Error",
92 "Stereotype JUnit not found, check your installation");
93 return false;
94 }
95 }
96 }
97
98 private boolean linkTestCase(Class classToTest, Class testClass, IModule module) {
99 IModelingSession session = module.getModuleContext().getModelingSession();
100 try (ITransaction t = session.createTransaction("Stereotype a test case")) {
101 //Create the dependency
102 IUmlModel model = session.getModel();
103 model.createDependency(testClass,classToTest, module.getName(), "JUnitDependency");
104
105 t.commit();
106 return true;
107 } catch (ExtensionNotFoundException e) {
108 MessageDialog.openError(Display.getCurrent().getActiveShell(),
109 "Error",
110 "Stereotype JUnitDependency not found, check your installation");
111 return false;
112 } catch (Exception e) {
113 // Report error to the log
114 module.getModuleContext().getLogService().error(e);
115 return false;
116 }
117 }
118}