Add the single class loader.

.drone.yaml

@@ -0,0 +1,24 @@
+---
+kind: pipeline
+type: docker
+name: gradle
+
+steps:
+  - name: test
+    image: gradle:8.3.0-jdk17-graal
+    commands:
+      - gradle assemble
+      - gradle check
+
+---
+kind: pipeline
+type: docker
+name: maven
+
+steps:
+  - name: test
+    image: maven:3.9.4-eclipse-temurin-17-alpine
+    commands:
+      - mvn install -DskipTests=true -Dmaven.javadoc.skip=true -B -V
+      - mvn test -B
+

src/main/java/space/kklochko/simple_jbdd/annotations/Title.java

@@ -0,0 +1,13 @@
+package space.kklochko.simple_jbdd.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+public @interface Title {
+    String value() default "Title";
+}
+

src/main/java/space/kklochko/simple_jbdd/test_examples/tests/SimpleFailedThenTest.java

@@ -1,8 +1,11 @@
 package space.kklochko.simple_jbdd.test_examples.tests;
 
 import space.kklochko.simple_jbdd.annotations.Then;
+import space.kklochko.simple_jbdd.annotations.Title;
 import space.kklochko.simple_jbdd.tests.Test;
 
+
+@Title("A Simple Failed GivenWhenTest for Sum")
 public class SimpleFailedThenTest extends Test {
     @Then
     public void check() {

src/main/java/space/kklochko/simple_jbdd/test_examples/tests/SimpleGivenWhenThenTest.java

@@ -2,10 +2,12 @@ package space.kklochko.simple_jbdd.test_examples.tests;
 
 import space.kklochko.simple_jbdd.annotations.Given;
 import space.kklochko.simple_jbdd.annotations.Then;
+import space.kklochko.simple_jbdd.annotations.Title;
 import space.kklochko.simple_jbdd.annotations.When;
 import space.kklochko.simple_jbdd.test_examples.samples.Sum;
 import space.kklochko.simple_jbdd.tests.Test;
 
+@Title("A Simple GivenWhenTest for Sum")
 public class SimpleGivenWhenThenTest extends Test {
     private Sum sum;
     private int a;

src/main/java/space/kklochko/simple_jbdd/test_examples/tests/SimpleThenTest.java

@@ -1,10 +1,12 @@
 package space.kklochko.simple_jbdd.test_examples.tests;
 
 import space.kklochko.simple_jbdd.annotations.Then;
+import space.kklochko.simple_jbdd.annotations.Title;
 import space.kklochko.simple_jbdd.tests.Test;
 
+@Title("Simple test")
 public class SimpleThenTest extends Test {
-    @Then
+    @Then("The sum of 10 and 20 is 30.")
     public void check() {
         assert 30 == 10 + 20;
     }

src/main/java/space/kklochko/simple_jbdd/test_examples/tests/SimpleThenTestWithoutTitle.java

@@ -0,0 +1,13 @@
+package space.kklochko.simple_jbdd.test_examples.tests;
+
+import space.kklochko.simple_jbdd.annotations.Then;
+import space.kklochko.simple_jbdd.annotations.Title;
+import space.kklochko.simple_jbdd.tests.Test;
+
+public class SimpleThenTestWithoutTitle extends Test {
+    @Then("The sum of 10 and 20 is 30.")
+    public void check() {
+        assert 30 == 10 + 20;
+    }
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/commands/AbstractTestCommand.java

@@ -0,0 +1,43 @@
+package space.kklochko.simple_jbdd.tests.commands;
+
+import space.kklochko.simple_jbdd.tests.Test;
+import java.util.Map;
+import java.util.TreeMap;
+
+public abstract class AbstractTestCommand<T extends Test> {
+    protected String type;
+    protected String label;
+
+    public AbstractTestCommand(String label) {
+        setLabel(label);
+    }
+
+    public abstract boolean test();
+
+    public Map<String, String> getLabels() {
+        Map<String, String> labels = new TreeMap<String, String>();
+        labels.put(getType(), this.getLabel());
+        return labels;
+    }
+
+    public String getType() {
+        return type;
+    }
+
+    public void setType(String type) {
+        this.type = type;
+    }
+
+    public void setLabel(String label) {
+        this.label = label;
+    }
+
+    public String getLabel() {
+        return label;
+    }
+
+    public abstract void setObject(T object);
+
+    public abstract T getObject();
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/commands/SimpleTestCommand.java

@@ -0,0 +1,27 @@
+package space.kklochko.simple_jbdd.tests.commands;
+
+import space.kklochko.simple_jbdd.tests.Test;
+
+public class SimpleTestCommand<T extends Test> extends AbstractTestCommand<T> {
+    protected T object;
+
+    public SimpleTestCommand(String label, T object) {
+        super(label);
+        setObject(object);
+        setType("Title");
+    }
+
+    @Override
+    public boolean test() {
+        return true;
+    }
+
+    public void setObject(T object) {
+        this.object = object;
+    }
+
+    public T getObject() {
+        return object;
+    }
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/commands/decorators/AbstractDecorator.java

@@ -0,0 +1,55 @@
+package space.kklochko.simple_jbdd.tests.commands.decorators;
+
+import space.kklochko.simple_jbdd.tests.Test;
+import space.kklochko.simple_jbdd.tests.commands.AbstractTestCommand;
+
+import java.lang.reflect.Method;
+import java.util.Map;
+
+public abstract class AbstractDecorator<T extends Test> extends AbstractTestCommand<T> {
+    protected AbstractTestCommand<T> command;
+
+    protected Method method;
+
+    public AbstractDecorator(String label, AbstractTestCommand<T> command) {
+        super(label);
+        setCommand(command);
+    }
+
+    public abstract boolean test();
+
+    public Map<String, String> getLabels() {
+        Map<String, String> labels = getCommand().getLabels();
+        labels.put(getType(), this.getLabel());
+        return labels;
+    }
+
+    public abstract boolean runMethod();
+
+    public void setMethod(Method method) {
+        this.method = method;
+    }
+
+    public Method getMethod() {
+        return method;
+    }
+
+    @Override
+    public void setObject(T object) {
+        command.setObject(object);
+    }
+
+    @Override
+    public T getObject() {
+        return command.getObject();
+    }
+
+    public AbstractTestCommand<T> getCommand() {
+        return command;
+    }
+
+    public void setCommand(AbstractTestCommand<T> command) {
+        this.command = command;
+    }
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/commands/decorators/BlockDecorator.java

@@ -0,0 +1,44 @@
+package space.kklochko.simple_jbdd.tests.commands.decorators;
+
+import space.kklochko.simple_jbdd.tests.Test;
+import space.kklochko.simple_jbdd.tests.commands.AbstractTestCommand;
+
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+
+public class BlockDecorator<T extends Test> extends AbstractDecorator<T> {
+    public BlockDecorator(String label, AbstractTestCommand<T> command, Method method, String type) {
+        super(label, command);
+        setType(type);
+        setMethod(method);
+    }
+
+    public boolean test() {
+        boolean result = runMethod();
+
+        if(!result)
+            return false;
+
+        return getCommand().test();
+    }
+
+    public boolean runMethod() {
+        try {
+            method.setAccessible(true);
+            method.invoke(getCommand().getObject());
+            return true;
+        } catch (InvocationTargetException e) {
+            Throwable exception = e.getCause();
+
+            if(exception instanceof AssertionError)
+                throw (AssertionError) exception;
+
+            System.err.println(e.getMessage());
+            throw new RuntimeException(e);
+        } catch (IllegalAccessException e) {
+            System.err.println("Check access modifiers.");
+            throw new RuntimeException(e);
+        }
+    };
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/factories/AbstractTestRunnerFactory.java

@@ -0,0 +1,10 @@
+package space.kklochko.simple_jbdd.tests.factories;
+
+import space.kklochko.simple_jbdd.tests.Test;
+import space.kklochko.simple_jbdd.tests.commands.AbstractTestCommand;
+import space.kklochko.simple_jbdd.tests.runners.AbstractTestRunner;
+
+public abstract class AbstractTestRunnerFactory {
+    public abstract AbstractTestRunner create(AbstractTestCommand<Test> command);
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/factories/SimpleTestRunnerFactory.java

@@ -0,0 +1,13 @@
+package space.kklochko.simple_jbdd.tests.factories;
+
+import space.kklochko.simple_jbdd.tests.Test;
+import space.kklochko.simple_jbdd.tests.commands.AbstractTestCommand;
+import space.kklochko.simple_jbdd.tests.runners.AbstractTestRunner;
+import space.kklochko.simple_jbdd.tests.runners.SimpleTestRunner;
+
+public class SimpleTestRunnerFactory extends AbstractTestRunnerFactory {
+    public AbstractTestRunner create(AbstractTestCommand<Test> command) {
+        return new SimpleTestRunner(command);
+    }
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/factories/TestCommandFactory.java

@@ -0,0 +1,76 @@
+package space.kklochko.simple_jbdd.tests.factories;
+
+import space.kklochko.simple_jbdd.annotations.Given;
+import space.kklochko.simple_jbdd.annotations.Then;
+import space.kklochko.simple_jbdd.annotations.Title;
+import space.kklochko.simple_jbdd.annotations.When;
+import space.kklochko.simple_jbdd.tests.Test;
+import space.kklochko.simple_jbdd.tests.commands.AbstractTestCommand;
+import space.kklochko.simple_jbdd.tests.commands.SimpleTestCommand;
+import space.kklochko.simple_jbdd.tests.commands.decorators.BlockDecorator;
+
+import java.lang.annotation.Annotation;
+import java.lang.reflect.Method;
+import java.util.Map;
+import java.util.TreeMap;
+
+public class TestCommandFactory {
+    public AbstractTestCommand create(Test input) {
+	    Class<?> aClass = input.getClass();
+	    Map<String, Method> test_methods = this.getTestMethods(aClass);
+
+        AbstractTestCommand<Test> aTestCommand = createTest(aClass, input);
+
+        if(test_methods.containsKey("Then")) {
+            Method then = test_methods.get("Then");
+            String label = then.getAnnotation(Then.class).value();
+            aTestCommand = new BlockDecorator<Test>(label, aTestCommand, then, "Then");
+        }
+
+        if(test_methods.containsKey("When")) {
+            Method when = test_methods.get("When");
+            String label = when.getAnnotation(When.class).value();
+            aTestCommand = new BlockDecorator<Test>(label, aTestCommand, when, "When");
+        }
+
+        if(test_methods.containsKey("Given")) {
+            Method when = test_methods.get("Given");
+            String label = when.getAnnotation(Given.class).value();
+            aTestCommand = new BlockDecorator<Test>(label, aTestCommand, when, "Given");
+        }
+
+        return aTestCommand;
+    }
+
+    protected AbstractTestCommand<Test> createTest(Class<?> aClass, Test input) {
+        Title aTitle = aClass.getAnnotation(Title.class);
+        String title = aClass.getName();
+
+        if(aTitle != null)
+            title = aTitle.value();
+
+        return new SimpleTestCommand<Test>(title, input);
+    }
+
+    protected <T extends Test> Map<String, Method> getTestMethods(Class<?> aClass) {
+        Map<String, Method> test_methods = new TreeMap<String, Method>();
+
+        for(Method method : aClass.getDeclaredMethods()) {
+            Annotation[] annotations = method.getAnnotations();
+
+            if (annotations.length == 0)
+                continue;
+
+            if(method.isAnnotationPresent(Given.class))
+                test_methods.put("Given", method);
+
+            if(method.isAnnotationPresent(When.class))
+                test_methods.put("When", method);
+
+            if(method.isAnnotationPresent(Then.class))
+                test_methods.put("Then", method);
+        }
+
+        return test_methods;
+    }
+}

src/main/java/space/kklochko/simple_jbdd/tests/factories/TestCommandQueueFactory.java

@@ -0,0 +1,44 @@
+package space.kklochko.simple_jbdd.tests.factories;
+
+import space.kklochko.simple_jbdd.tests.Test;
+import space.kklochko.simple_jbdd.tests.commands.AbstractTestCommand;
+
+import java.util.*;
+
+public class TestCommandQueueFactory {
+    private ArrayList<Test> tests;
+    private TestCommandFactory factory;
+
+    public TestCommandQueueFactory(ArrayList<Test> tests, TestCommandFactory factory) {
+        setTests(tests);
+        setFactory(factory);
+    }
+
+    public ArrayList<AbstractTestCommand<Test>> create() {
+        ArrayList<AbstractTestCommand<Test>> commands = new ArrayList<AbstractTestCommand<Test>>();
+
+        for(Test test : getTests()) {
+            AbstractTestCommand<Test> command = getFactory().create(test);
+            commands.add(command);
+        }
+
+        return commands;
+    }
+
+    public ArrayList<Test> getTests() {
+        return tests;
+    }
+
+    public void setTests(ArrayList<Test> tests) {
+        this.tests = tests;
+    }
+
+    public TestCommandFactory getFactory() {
+        return factory;
+    }
+
+    public void setFactory(TestCommandFactory factory) {
+        this.factory = factory;
+    }
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/loaders/SingleClassLoader.java

@@ -0,0 +1,26 @@
+package space.kklochko.simple_jbdd.tests.loaders;
+
+public class SingleClassLoader {
+    String className;
+
+    public SingleClassLoader(String className) {
+        setClassName(className);
+    }
+
+    public Class<?> load() {
+        try {
+            return Class.forName(getClassName());
+        } catch (ClassNotFoundException e) {
+            return null;
+        }
+    }
+
+    public String getClassName() {
+        return className;
+    }
+
+    public void setClassName(String className) {
+        this.className = className;
+    }
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/runners/AbstractTestRunner.java

@@ -0,0 +1,6 @@
+package space.kklochko.simple_jbdd.tests.runners;
+
+public abstract class AbstractTestRunner {
+    public abstract boolean run();
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/runners/SimpleTestRunner.java

@@ -0,0 +1,29 @@
+package space.kklochko.simple_jbdd.tests.runners;
+
+import space.kklochko.simple_jbdd.tests.Test;
+import space.kklochko.simple_jbdd.tests.commands.AbstractTestCommand;
+
+public class SimpleTestRunner extends AbstractTestRunner {
+    private AbstractTestCommand<Test> command;
+
+    public SimpleTestRunner(AbstractTestCommand<Test> command) {
+        setCommand(command);
+    }
+
+    public boolean run() {
+        try {
+            return getCommand().test();
+        }catch (AssertionError e) {
+            return false;
+        }
+    }
+
+    public AbstractTestCommand<Test> getCommand() {
+        return command;
+    }
+
+    public void setCommand(AbstractTestCommand<Test> command) {
+        this.command = command;
+    }
+}
+

src/test/groovy/space/kklochko/simple_jbdd/tests/factories/IntegratedTestCommandQueueFactorySpec.groovy

@@ -0,0 +1,54 @@
+package space.kklochko.simple_jbdd.tests.factories
+
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleGivenWhenThenTest
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleThenTest
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleThenTestWithoutTitle
+import space.kklochko.simple_jbdd.tests.Test
+import spock.lang.Narrative
+import spock.lang.Specification
+import spock.lang.Subject
+import spock.lang.Title
+
+@Narrative("""The factory must generate a queue of the test commands, so
+those tests check if factory generate them right.
+""")
+@Title("Integrated tests for TestCommandQueueFactory")
+class IntegratedTestCommandQueueFactorySpec extends Specification {
+    def "Factory generate the queue and its size is 2."() {
+        given: "I have a list of tests"
+        def tests = [new SimpleThenTest(), new SimpleThenTestWithoutTitle()]
+
+        and: "I have a test factory"
+        def testFactory = new TestCommandFactory()
+
+        and: "I have a factory"
+        @Subject
+        def factory = new TestCommandQueueFactory(tests, testFactory)
+
+        when: "Factory build the queue"
+        def queue = factory.create()
+
+        then: "the size is 2"
+        2 == queue.size()
+    }
+
+    def "Factory generate the queue and the commands and test order is the same."() {
+        given: "I have a list of tests with first methods [check, setup]"
+        def tests = [new SimpleThenTest(), new SimpleGivenWhenThenTest()]
+
+        and: "I have a test factory"
+        def testFactory = new TestCommandFactory()
+
+        and: "I have a factory"
+        @Subject
+        def factory = new TestCommandQueueFactory(tests, testFactory)
+
+        when: "Factory build the queue"
+        def queue = factory.create()
+
+        then: "the order is the same"
+        queue[0].method.getName() == "check"
+        queue[1].method.getName() == "setup"
+    }
+}
+

src/test/groovy/space/kklochko/simple_jbdd/tests/factories/TestCommandFactorySpec.groovy

@@ -0,0 +1,96 @@
+package space.kklochko.simple_jbdd.tests.factories
+
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleGivenWhenThenTest
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleThenTest
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleThenTestWithoutTitle
+import space.kklochko.simple_jbdd.tests.factories.TestCommandFactory
+import spock.lang.Narrative;
+import spock.lang.Specification
+import spock.lang.Subject
+import spock.lang.Title
+
+@Narrative("""The factory must generate a test command, so
+those tests check if factory generate them right.
+""")
+@Title("Unit test for TestCommandFactory")
+class TestCommandFactorySpec extends Specification {
+    def "If the map of methods have one test block."() {
+        given: "I have a TestCommandFactory object"
+        @Subject
+        def factory = new TestCommandFactory();
+
+        and: "I also have a SimpleThenTest object"
+        def simpleThenTest = new SimpleThenTest()
+
+        when: "If a test have only one block"
+        def map = factory.getTestMethods(simpleThenTest.getClass())
+
+        then: "the map size is 1 method"
+        1 == map.size()
+    }
+
+    def "createTest() sets the title to a class name if no Title annotation."() {
+        given: "I have a test factory"
+        @Subject
+        def factory = new TestCommandFactory()
+
+        and: "I have a test class without Title"
+        def testClass = new SimpleThenTestWithoutTitle()
+
+        when: "I build a test"
+        def test = factory.create(testClass)
+
+        then: "The test have title as the test class"
+        testClass.class.getName() == test.getLabels()['Title']
+    }
+
+    def "createTest() sets the title to a value of the Title annotation."() {
+        given: "I have a test factory"
+        @Subject
+        def factory = new TestCommandFactory()
+
+        and: "I have a test class with Title"
+        def testClass = new SimpleThenTest()
+
+        and: "and the title of the annotation"
+        def titleClass = space.kklochko.simple_jbdd.annotations.Title.class
+        def title = testClass.getClass().getAnnotation(titleClass).value()
+
+        when: "I build a test"
+        def test = factory.create(testClass)
+
+        then: "The test have title as the test class"
+        title == test.getLabels()['Title']
+    }
+
+    def "createTest() build a Test with only Then."() {
+        given: "I have a test factory"
+        @Subject
+        def factory = new TestCommandFactory()
+
+        and: "I have a test class with Title"
+        def testClass = new SimpleThenTest()
+
+        when: "I build a test"
+        def test = factory.create(testClass)
+
+        then: "The test have title and then method"
+        ['Title', 'Then'].toSet() == test.getLabels().keySet()
+    }
+
+    def "createTest() build a Test with Given-When-Then."() {
+        given: "I have a test factory"
+        @Subject
+        def factory = new TestCommandFactory()
+
+        and: "I have a test class with Title and Given-When-Then"
+        def testClass = new SimpleGivenWhenThenTest()
+
+        when: "I build a test"
+        def test = factory.create(testClass)
+
+        then: "The test have title and then method"
+        ['Title', 'Given', 'When', 'Then'].toSet() == test.getLabels().keySet()
+    }
+}
+

src/test/groovy/space/kklochko/simple_jbdd/tests/factories/TestCommandQueueFactorySpec.groovy

@@ -0,0 +1,36 @@
+package space.kklochko.simple_jbdd.tests.factories
+
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleThenTest
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleThenTestWithoutTitle
+import space.kklochko.simple_jbdd.tests.Test
+import space.kklochko.simple_jbdd.tests.commands.decorators.BlockDecorator
+import spock.lang.Narrative
+import spock.lang.Specification
+import spock.lang.Subject
+import spock.lang.Title
+
+@Narrative("""The factory must generate a queue of the test commands, so
+those tests check if factory generate them right.
+""")
+@Title("Unit tests for TestCommandQueueFactory")
+class TestCommandQueueFactorySpec extends Specification {
+    def "Factory generate the queue and its size is 2."() {
+        given: "I have a list of tests"
+        def tests = [Mock(SimpleThenTest), Mock(SimpleThenTestWithoutTitle)]
+
+        and: "I have a test factory"
+        def testFactory = Stub(TestCommandFactory)
+        testFactory.create() >>> [Mock(BlockDecorator<Test>)]*2
+
+        and: "I have the factory"
+        @Subject
+        def factory = new TestCommandQueueFactory(tests, testFactory)
+
+        when: "Factory build the queue"
+        def queue = factory.create()
+
+        then: "the size is 2"
+        2 == queue.size()
+    }
+}
+

src/test/groovy/space/kklochko/simple_jbdd/tests/loaders/IntegratedSingleClassLoader.groovy

@@ -0,0 +1,31 @@
+package space.kklochko.simple_jbdd.tests.loaders
+
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleThenTest
+import spock.lang.Narrative
+import spock.lang.Specification
+import spock.lang.Subject
+import spock.lang.Title
+
+@Narrative("""The loader must return a class or null, so
+those tests check if responses are right.
+""")
+@Title("Integrated tests for ClassLoader.")
+class IntegratedSingleClassLoader extends Specification {
+    def "The class has been run."() {
+        given: "I have a class loader"
+        @Subject
+        def loader = new SingleClassLoader(className);
+
+        when: "The class was loaded"
+        def aClass = loader.load()
+
+        then: "Checking that the test result is expected"
+        aClass == expectedClass
+
+        where: "Possible variants of tests"
+        className                                                       || expectedClass
+        "fourHundredFour"                                               || null
+        "space.kklochko.simple_jbdd.test_examples.tests.SimpleThenTest" || SimpleThenTest
+    }
+}
+

src/test/groovy/space/kklochko/simple_jbdd/tests/runners/IntegratedSimpleTestRunnerSpec.groovy

@@ -0,0 +1,42 @@
+package space.kklochko.simple_jbdd.tests.runners
+
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleFailedThenTest
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleGivenWhenThenTest
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleThenTest
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleThenTestWithoutTitle
+import space.kklochko.simple_jbdd.tests.factories.TestCommandFactory
+import spock.lang.Narrative
+import spock.lang.Specification
+import spock.lang.Subject
+import spock.lang.Title
+
+@Narrative("""The runner must return a result of test, so
+those tests check if passed and failed test generate the right result.
+""")
+@Title("Integrated tests for SimpleTestRunner with TestCommandFactory and test examples")
+class IntegratedSimpleTestRunnerSpec extends Specification {
+    def "The real test has been run."() {
+        given: "I have a factory"
+        def factory = new TestCommandFactory();
+
+        and: "I have a testCommand created from a test object"
+        def test = factory.create(testObject)
+
+        and: "I have a test runner"
+        @Subject
+        def runner = new SimpleTestRunner(test)
+
+        when: "The testCommand has been run"
+        def result = runner.run()
+
+        then: "Checking that the test result is expected"
+        result == expectedResult
+
+        where: "Possible variants of tests"
+        testObject                       || expectedResult
+        new SimpleThenTest()             || true
+        new SimpleGivenWhenThenTest()    || true
+        new SimpleThenTestWithoutTitle() || true
+        new SimpleFailedThenTest()       || false
+    }
+}

src/test/groovy/space/kklochko/simple_jbdd/tests/runners/SimpleTestRunnerSpec.groovy

@@ -0,0 +1,47 @@
+package space.kklochko.simple_jbdd.tests.runners
+
+import space.kklochko.simple_jbdd.tests.commands.SimpleTestCommand
+import space.kklochko.simple_jbdd.tests.factories.TestCommandFactory
+import spock.lang.Narrative
+import spock.lang.Specification
+import spock.lang.Subject
+import spock.lang.Title
+
+@Narrative("""The runner must return a result of test, so
+those tests check if passed and failed test generate the right result.
+""")
+@Title("Unit tests for SimpleTestRunner")
+class SimpleTestRunnerSpec extends Specification {
+    def "The test with then has been passed."() {
+        given: "I have a testCommand"
+        def test = Stub(SimpleTestCommand)
+        test.test() >>> [true]
+
+        and: "I have a test runner"
+        @Subject
+        def runner = new SimpleTestRunner(test)
+
+        when: "The testCommand has been run"
+        def result = runner.run()
+
+        then: "The result is true"
+        result
+    }
+
+    def "The test with then that has not been passed."() {
+        given: "I have a failed testCommand"
+        def test = Stub(SimpleTestCommand)
+        test.test() >> { assert 1 == 0 }
+
+        and: "I have a test runner"
+        @Subject
+        def runner = new SimpleTestRunner(test)
+
+        when: "The testCommand has been run"
+        def result = runner.run()
+
+        then: "The result is false"
+        !result
+    }
+}
+