Add the main entry point.

build.gradle

@@ -12,6 +12,10 @@ java {
     }
 }
 
+compileJava {
+    options.encoding = 'UTF-8'
+}
+
 repositories {
   // Spock releases are available from Maven Central
   mavenCentral()
@@ -19,6 +23,7 @@ repositories {
 
 dependencies {
   implementation 'com.google.guava:guava:32.1.2-jre'
+  implementation 'org.apache.commons:commons-lang3:3.13.0'
   // mandatory dependencies for using Spock
   implementation platform('org.apache.groovy:groovy-bom:4.0.15')
   implementation 'org.apache.groovy:groovy'

pom.xml

@@ -84,6 +84,11 @@
       <artifactId>guava</artifactId>
       <version>32.1.2-jre</version>
     </dependency>
+    <dependency>
+      <groupId>org.apache.commons</groupId>
+      <artifactId>commons-lang3</artifactId>
+      <version>3.13.0</version>
+    </dependency>
     <!-- Mandatory dependencies for using Spock -->
     <dependency>
       <groupId>org.spockframework</groupId>

src/main/java/space/kklochko/simple_jbdd/Main.java

@@ -0,0 +1,24 @@
+package space.kklochko.simple_jbdd;
+
+import space.kklochko.simple_jbdd.tests.factories.AbstractTestRunnerFactory;
+import space.kklochko.simple_jbdd.tests.factories.SimpleTestRunnerFactory;
+import space.kklochko.simple_jbdd.tests.loaders.NameClassLoader;
+import space.kklochko.simple_jbdd.tests.reports.AbstractReporter;
+import space.kklochko.simple_jbdd.tests.reports.CLIReporter;
+import space.kklochko.simple_jbdd.tests.reports.fmt.SimpleTestReportFormatter;
+import space.kklochko.simple_jbdd.tests.runners.CLITestRunner;
+
+public class Main {
+    public static void main(String[] args) {
+        NameClassLoader loader = new NameClassLoader();
+        AbstractTestRunnerFactory testRunnerFactory = new SimpleTestRunnerFactory();
+        AbstractReporter reporter = new CLIReporter(new SimpleTestReportFormatter());
+
+        CLITestRunner runner = new CLITestRunner(loader, testRunnerFactory, reporter);
+
+        boolean status = runner.run();
+
+        System.exit(status ? 0 : 1);
+    }
+}
+

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

@@ -9,6 +9,11 @@ public class TestCommandQueueFactory {
     private ArrayList<Test> tests;
     private TestCommandFactory factory;
 
+    public TestCommandQueueFactory(ArrayList<Test> tests) {
+        setTests(tests);
+        setFactory(new TestCommandFactory());
+    }
+
     public TestCommandQueueFactory(ArrayList<Test> tests, TestCommandFactory factory) {
         setTests(tests);
         setFactory(factory);

src/main/java/space/kklochko/simple_jbdd/tests/factories/meta/AbstractTestCommandMetaDataFactory.java

@@ -0,0 +1,9 @@
+package space.kklochko.simple_jbdd.tests.factories.meta;
+
+import java.util.AbstractMap;
+import java.util.ArrayList;
+
+public abstract class AbstractTestCommandMetaDataFactory {
+    abstract public ArrayList<AbstractMap.SimpleEntry<String, String>> create();
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/factories/meta/TestCommandMetaDataFactory.java

@@ -0,0 +1,34 @@
+package space.kklochko.simple_jbdd.tests.factories.meta;
+
+import space.kklochko.simple_jbdd.tests.commands.AbstractTestCommand;
+import space.kklochko.simple_jbdd.tests.commands.decorators.AbstractDecorator;
+
+import java.util.AbstractMap;
+import java.util.ArrayList;
+
+public class TestCommandMetaDataFactory extends AbstractTestCommandMetaDataFactory {
+    private AbstractTestCommand command;
+
+    public TestCommandMetaDataFactory(AbstractTestCommand command) {
+        this.command = command;
+    }
+
+    public ArrayList<AbstractMap.SimpleEntry<String, String>> create() {
+        ArrayList<AbstractMap.SimpleEntry<String, String>> blocks = new ArrayList<>();
+        AbstractTestCommand currentCommand = command;
+        Class<?> aClass = command.getClass();
+
+        while(AbstractDecorator.class.isAssignableFrom(aClass)) {
+            AbstractDecorator block = (AbstractDecorator) currentCommand;
+            blocks.add(new AbstractMap.SimpleEntry<>(block.getType(), block.getLabel()));
+
+            currentCommand = block.getCommand();
+            aClass = currentCommand.getClass();
+        }
+
+        blocks.add(0, (new AbstractMap.SimpleEntry<>(currentCommand.getType(), currentCommand.getLabel())));
+
+        return blocks;
+    }
+}
+

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

@@ -0,0 +1,50 @@
+package space.kklochko.simple_jbdd.tests.loaders;
+
+import space.kklochko.simple_jbdd.tests.Test;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+
+public class SingleTestLoader {
+    String className;
+
+    public SingleTestLoader(String className) {
+        setClassName(className);
+    }
+
+    public Test load() {
+        SingleClassLoader loader = new SingleClassLoader(getClassName());
+        Class<?> aClass = loader.load();
+
+        if(aClass == null)
+            return null;
+
+        Constructor defaultConstructor = null;
+
+        for(Constructor constructor : aClass.getDeclaredConstructors()) {
+            if(constructor.getParameterCount() == 0) {
+                defaultConstructor = constructor;
+                break;
+            }
+        }
+
+        try {
+            return (Test) defaultConstructor.newInstance();
+        } catch (InstantiationException e) {
+            throw new RuntimeException(e);
+        } catch (IllegalAccessException e) {
+            throw new RuntimeException(e);
+        } catch (InvocationTargetException e) {
+            throw new RuntimeException(e);
+        }
+    }
+
+    public String getClassName() {
+        return className;
+    }
+
+    public void setClassName(String className) {
+        this.className = className;
+    }
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/reports/AbstractReporter.java

@@ -0,0 +1,40 @@
+package space.kklochko.simple_jbdd.tests.reports;
+
+import space.kklochko.simple_jbdd.tests.factories.meta.AbstractTestCommandMetaDataFactory;
+import space.kklochko.simple_jbdd.tests.reports.fmt.AbstractTestReportFormatter;
+
+import java.util.AbstractMap;
+import java.util.ArrayList;
+
+public abstract class AbstractReporter {
+    ArrayList<AbstractMap.SimpleEntry<AbstractTestCommandMetaDataFactory, Boolean>> Metadata;
+    AbstractTestReportFormatter formatter;
+
+    public AbstractReporter(ArrayList<AbstractMap.SimpleEntry<AbstractTestCommandMetaDataFactory, Boolean>> metadata, AbstractTestReportFormatter formatter) {
+        setMetadata(metadata);
+        setFormatter(formatter);
+    }
+
+    abstract public void report();
+
+    public ArrayList<AbstractMap.SimpleEntry<AbstractTestCommandMetaDataFactory, Boolean>> getMetadata() {
+        return Metadata;
+    }
+
+    public void setMetadata(ArrayList<AbstractMap.SimpleEntry<AbstractTestCommandMetaDataFactory, Boolean>> metadata) {
+        Metadata = metadata;
+    }
+
+    public void addMetadata(AbstractTestCommandMetaDataFactory testMetaData, boolean isPassed) {
+        getMetadata().add(new AbstractMap.SimpleEntry<>(testMetaData, isPassed));
+    }
+
+    public AbstractTestReportFormatter getFormatter() {
+        return formatter;
+    }
+
+    public void setFormatter(AbstractTestReportFormatter formatter) {
+        this.formatter = formatter;
+    }
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/reports/CLIReporter.java

@@ -0,0 +1,99 @@
+package space.kklochko.simple_jbdd.tests.reports;
+
+import space.kklochko.simple_jbdd.tests.factories.meta.AbstractTestCommandMetaDataFactory;
+import space.kklochko.simple_jbdd.tests.reports.fmt.AbstractTestReportFormatter;
+
+import java.util.AbstractMap;
+import java.util.ArrayList;
+import org.apache.commons.lang3.StringUtils;
+
+public class CLIReporter extends AbstractReporter {
+    final int terminalWidth = 80;
+
+    public CLIReporter(AbstractTestReportFormatter formatter) {
+        super(null, formatter);
+    }
+
+    public CLIReporter(ArrayList<AbstractMap.SimpleEntry<AbstractTestCommandMetaDataFactory, Boolean>> metadata, AbstractTestReportFormatter formatter) {
+        super(metadata, formatter);
+    }
+
+    public void report() {
+        ArrayList<AbstractMap.SimpleEntry<String, Boolean>> testData = format();
+        ArrayList<AbstractMap.SimpleEntry<String, Boolean>> failedTestData = getFailedTests(testData);
+        int passed = count(testData, true);
+        int failed = count(testData, false);
+
+        System.out.printf("%s\n\n", center(" Tests "));
+        printTests(testData);
+
+        if(failed != 0) {
+            System.out.printf("%s\n\n", center(" Errors "));
+            printTests(failedTestData);
+        }
+
+        System.out.printf("%s\n", center(" Summary "));
+        System.out.print(summary(passed, failed));
+    }
+
+    public ArrayList<AbstractMap.SimpleEntry<String, Boolean>> format() {
+        ArrayList<AbstractMap.SimpleEntry<String, Boolean>> data = new ArrayList<>();
+
+        for(var pair : getMetadata()) {
+            boolean isPassed = pair.getValue();
+
+            getFormatter().setTestMetaData(pair.getKey().create());
+            getFormatter().setPassed(isPassed);
+
+            data.add(new AbstractMap.SimpleEntry<>(getFormatter().format(), isPassed));
+        }
+
+        return data;
+    }
+
+    public ArrayList<AbstractMap.SimpleEntry<String, Boolean>> getFailedTests(ArrayList<AbstractMap.SimpleEntry<String, Boolean>> testData) {
+        ArrayList<AbstractMap.SimpleEntry<String, Boolean>> failed = new ArrayList<>();
+
+        for(var pair : testData) {
+            boolean isPassed = pair.getValue();
+
+            if(isPassed) continue;
+
+            failed.add(pair);
+        }
+
+        return failed;
+    }
+
+    public int count(ArrayList<AbstractMap.SimpleEntry<String, Boolean>> testData, boolean isPassedStatus) {
+        int count = 0;
+
+        for(var pair : testData) {
+            boolean isPassed = pair.getValue();
+
+            if(isPassed == isPassedStatus)
+                count++;
+        }
+
+        return count;
+    }
+
+    public void printTests(ArrayList<AbstractMap.SimpleEntry<String, Boolean>> testData) {
+        for(var pair : testData) {
+            System.out.print(pair.getKey());
+        }
+    }
+
+    public String center(String content) {
+        return StringUtils.center(content, 80, '=');
+    }
+
+    public String summary(int passed, int failed) {
+        int all = passed + failed;
+        double passedPercent = (double) passed / (double) all * 100.0;
+        double failedPercent = (double) failed / (double) all * 100.0;
+
+        return String.format("Ran %d tests.\nPassed: %d (%.2f%%)\nFailed: %d (%.2f%%)\n", all, passed, passedPercent, failed, failedPercent);
+    }
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/reports/fmt/AbstractTestReportFormatter.java

@@ -0,0 +1,33 @@
+package space.kklochko.simple_jbdd.tests.reports.fmt;
+
+import java.util.AbstractMap;
+import java.util.ArrayList;
+
+abstract public class AbstractTestReportFormatter {
+    private ArrayList<AbstractMap.SimpleEntry<String, String>> testMetaData;
+    private boolean isPassed;
+
+    public AbstractTestReportFormatter(ArrayList<AbstractMap.SimpleEntry<String, String>> testMetaData, boolean isPassed) {
+        setTestMetaData(testMetaData);
+        setPassed(isPassed);
+    }
+
+    public abstract String format();
+
+    public ArrayList<AbstractMap.SimpleEntry<String, String>> getTestMetaData() {
+        return testMetaData;
+    }
+
+    public void setTestMetaData(ArrayList<AbstractMap.SimpleEntry<String, String>> testMetaData) {
+        this.testMetaData = testMetaData;
+    }
+
+    public boolean isPassed() {
+        return isPassed;
+    }
+
+    public void setPassed(boolean passed) {
+        isPassed = passed;
+    }
+}
+

src/main/java/space/kklochko/simple_jbdd/tests/reports/fmt/SimpleTestReportFormatter.java

@@ -0,0 +1,42 @@
+package space.kklochko.simple_jbdd.tests.reports.fmt;
+
+import space.kklochko.simple_jbdd.tests.Test;
+
+import java.util.AbstractMap;
+import java.util.ArrayList;
+
+public class SimpleTestReportFormatter extends AbstractTestReportFormatter {
+    final private String passedIcon = "✓";
+    final private String failedIcon = "⨯";
+
+    public SimpleTestReportFormatter() {
+        super(null, false);
+    }
+
+    public SimpleTestReportFormatter(ArrayList<AbstractMap.SimpleEntry<String, String>> testMetaData, boolean isPassed) {
+        super(testMetaData, isPassed);
+    }
+
+    public String format() {
+        String status = (isPassed()) ? getPassedIcon() : getFailedIcon();
+        String title = getTestMetaData().get(0).getValue();
+
+        String result = String.format("%s %s\n", status, title);
+
+        for(int i=1; i<getTestMetaData().size(); ++i) {
+            AbstractMap.SimpleEntry<String, String> pair = getTestMetaData().get(i);
+            result += String.format("\t%s: %s\n", pair.getKey(), pair.getValue());
+        }
+
+        return result + '\n';
+    }
+
+    public String getPassedIcon() {
+        return passedIcon;
+    }
+
+    public String getFailedIcon() {
+        return failedIcon;
+    }
+}
+

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

@@ -0,0 +1,102 @@
+package space.kklochko.simple_jbdd.tests.runners;
+
+import space.kklochko.simple_jbdd.tests.Test;
+import space.kklochko.simple_jbdd.tests.commands.AbstractTestCommand;
+import space.kklochko.simple_jbdd.tests.factories.AbstractTestRunnerFactory;
+import space.kklochko.simple_jbdd.tests.factories.TestCommandQueueFactory;
+import space.kklochko.simple_jbdd.tests.factories.meta.AbstractTestCommandMetaDataFactory;
+import space.kklochko.simple_jbdd.tests.factories.meta.TestCommandMetaDataFactory;
+import space.kklochko.simple_jbdd.tests.loaders.AbstractNameClassLoader;
+import space.kklochko.simple_jbdd.tests.loaders.SingleTestLoader;
+import space.kklochko.simple_jbdd.tests.reports.AbstractReporter;
+
+import java.util.AbstractMap;
+import java.util.ArrayList;
+import java.util.Set;
+import java.util.stream.Collectors;
+import java.util.stream.IntStream;
+
+public class CLITestRunner extends AbstractTestRunner {
+    private ArrayList<AbstractTestCommand<Test>> commands;
+    private AbstractNameClassLoader classLoader;
+    private AbstractTestRunnerFactory runnerFactory;
+    private AbstractReporter reporter;
+
+    public CLITestRunner(AbstractNameClassLoader classLoader, AbstractTestRunnerFactory runnerFactory, AbstractReporter reporter) {
+        setClassLoader(classLoader);
+        setRunnerFactory(runnerFactory);
+        setReporter(reporter);
+    }
+
+    public boolean run() {
+        commands = createCommands(load());
+        ArrayList<Boolean> testStatuses = runTests(commands);
+        report(createMetadata(commands, testStatuses));
+
+        return isFailed(testStatuses);
+    }
+
+    public ArrayList<Test> load() {
+        Set<Class<?>> classes = this.classLoader.load();
+        ArrayList<Test> tests = new ArrayList();
+
+        for(var aClass : classes) {
+            tests.add((new SingleTestLoader(aClass.getName())).load());
+        }
+
+        return tests;
+    }
+
+    public ArrayList<AbstractTestCommand<Test>> createCommands(ArrayList<Test> tests) {
+        TestCommandQueueFactory factory = new TestCommandQueueFactory(tests);
+        return factory.create();
+    }
+
+    public ArrayList<Boolean> runTests(ArrayList<AbstractTestCommand<Test>> commands) {
+        return commands.stream()
+                       .map(c -> runnerFactory.create(c).run())
+                       .collect(Collectors.toCollection(ArrayList::new));
+    }
+
+    public ArrayList<AbstractMap.SimpleEntry<AbstractTestCommandMetaDataFactory, Boolean>> createMetadata(ArrayList<AbstractTestCommand<Test>> commands, ArrayList<Boolean> testStatuses) {
+        return IntStream.range(0, commands.size())
+                        .mapToObj(i -> new AbstractMap.SimpleEntry<AbstractTestCommandMetaDataFactory, Boolean>(
+                                            new TestCommandMetaDataFactory(commands.get(i)),
+                                            testStatuses.get(i)))
+                        .collect(Collectors.toCollection(ArrayList::new));
+    }
+
+    public void report(ArrayList<AbstractMap.SimpleEntry<AbstractTestCommandMetaDataFactory, Boolean>> metadata) {
+        reporter.setMetadata(metadata);
+        reporter.report();
+    }
+
+    public boolean isFailed(ArrayList<Boolean> testStatuses) {
+        return !testStatuses.stream().anyMatch(b -> b == false);
+    }
+
+    public AbstractNameClassLoader getClassLoader() {
+        return classLoader;
+    }
+
+    public void setClassLoader(AbstractNameClassLoader classLoader) {
+        this.classLoader = classLoader;
+    }
+
+    public AbstractTestRunnerFactory getRunnerFactory() {
+        return runnerFactory;
+    }
+
+    public void setRunnerFactory(AbstractTestRunnerFactory runnerFactory) {
+        this.runnerFactory = runnerFactory;
+    }
+
+    public AbstractReporter getReporter() {
+        return reporter;
+    }
+
+    public void setReporter(AbstractReporter reporter) {
+        this.reporter = reporter;
+    }
+}
+

src/test/groovy/space/kklochko/simple_jbdd/tests/factories/meta/IntegratedTestCommandMetaDataFactorySpec.groovy

@@ -0,0 +1,46 @@
+package space.kklochko.simple_jbdd.tests.factories.meta
+
+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.commands.AbstractTestCommand
+import space.kklochko.simple_jbdd.tests.commands.decorators.BlockDecorator
+import space.kklochko.simple_jbdd.tests.factories.TestCommandFactory
+import space.kklochko.simple_jbdd.tests.runners.SimpleTestRunner
+import spock.lang.Narrative
+import spock.lang.Specification
+import spock.lang.Subject
+import spock.lang.Title
+
+@Narrative("""The factory must generate a test command metadata, so
+those tests check if the factory generate it right.
+""")
+@Title("Integrated tests for TestCommandMetaDataFactory")
+class IntegratedTestCommandMetaDataFactorySpec extends Specification {
+    def "Metadata have  the map of methods have one test block."() {
+        given: "I have a command factory"
+        def commandFactory = new TestCommandFactory();
+
+        and: "I have a command of a test"
+        def command = commandFactory.create(testObject)
+
+        and: "I have a TestCommandMetaDataFactory object"
+        @Subject
+        def factory = new TestCommandMetaDataFactory(command)
+
+        when: "Parse the command to get metadata"
+        def metadata = factory.create()
+
+        then: "the metadata have only two labels for Title and Then"
+        expectedCount == metadata.size()
+
+        where: "Possible variants of tests"
+        testObject                       || expectedCount
+        new SimpleThenTest()             || 2
+        new SimpleGivenWhenThenTest()    || 4
+        new SimpleThenTestWithoutTitle() || 2
+        new SimpleFailedThenTest()       || 2
+    }
+}
+

src/test/groovy/space/kklochko/simple_jbdd/tests/factories/meta/TestCommandMetaDataFactorySpec.groovy

@@ -0,0 +1,93 @@
+package space.kklochko.simple_jbdd.tests.factories.meta
+
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleGivenWhenThenTest
+import space.kklochko.simple_jbdd.test_examples.tests.SimpleThenTest
+import space.kklochko.simple_jbdd.tests.commands.AbstractTestCommand
+import space.kklochko.simple_jbdd.tests.commands.decorators.BlockDecorator
+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 metadata, so
+those tests check if the factory generate it right.
+""")
+@Title("Unit tests for TestCommandMetaDataFactory")
+class TestCommandMetaDataFactorySpec extends Specification {
+    def "If the map of methods have one test block."() {
+        given: "I have a simple test with only Then block and its command."
+        def test = Mock(AbstractTestCommand) {
+            getType() >> "Title"
+            getLabel() >> "A simple test"
+        }
+
+        def command = GroovyMock(BlockDecorator) {
+            getType() >> "Then"
+            getLabel() >> "Then block"
+            getCommand() >> test
+        }
+
+        and: "I have a TestCommandMetaDataFactory object"
+        @Subject
+        def factory = new TestCommandMetaDataFactory(command)
+
+        when: "Parse the command to get metadata"
+        def metadata = factory.create()
+
+        then: "The metadata have only two labels for Title and Then"
+        2 == metadata.size()
+
+        and: "The format and the order must be the same"
+        metadata == [
+                new AbstractMap.SimpleEntry<>("Title", "A simple test"),
+                new AbstractMap.SimpleEntry<>("Then", "Then block")
+        ]
+    }
+
+    def "If the map of methods have GivenWhenThen blocks."() {
+        given: "I have a simple test with only Then block and its command."
+        def test = Mock(AbstractTestCommand) {
+            getType() >> "Title"
+            getLabel() >> "A simple test"
+        }
+
+        and: "Bootstrapping the test command"
+        def then = GroovyMock(BlockDecorator) {
+            getType() >> "Then"
+            getLabel() >> "Then block"
+            getCommand() >> test
+        }
+
+        def when = GroovyMock(BlockDecorator) {
+            getType() >> "When"
+            getLabel() >> "When block"
+            getCommand() >> then
+        }
+
+        def command = GroovyMock(BlockDecorator) {
+            getType() >> "Given"
+            getLabel() >> "Given block"
+            getCommand() >> when
+        }
+
+        and: "I have a TestCommandMetaDataFactory object"
+        @Subject
+        def factory = new TestCommandMetaDataFactory(command)
+
+        when: "Parse the command to get metadata"
+        def metadata = factory.create()
+
+        then: "The metadata have only two labels for Title and Then"
+        4 == metadata.size()
+
+        and: "The format and the order must be the same"
+        metadata == [
+                new AbstractMap.SimpleEntry<>("Title", "A simple test"),
+                new AbstractMap.SimpleEntry<>("Given", "Given block"),
+                new AbstractMap.SimpleEntry<>("When", "When block"),
+                new AbstractMap.SimpleEntry<>("Then", "Then block")
+        ]
+    }
+}
+

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

@@ -9,7 +9,7 @@ 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.")
+@Title("Integrated tests for SingleClassLoader.")
 class IntegratedSingleClassLoader extends Specification {
     def "The class has been loaded."() {
         given: "I have a class loader"

src/test/groovy/space/kklochko/simple_jbdd/tests/loaders/IntegratedSingleTestLoader.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 SingleTestLoader.")
+class IntegratedSingleTestLoader extends Specification {
+    def "The class has been loaded."() {
+        given: "I have a class loader"
+        @Subject
+        def loader = new SingleTestLoader(className)
+
+        when: "The class was loaded"
+        def aClass = loader.load()
+
+        then: "Checking that the test result is expected"
+        aClass?.class == 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/reports/CLIReporterFormatMethodSpec.groovy

@@ -0,0 +1,72 @@
+package space.kklochko.simple_jbdd.tests.reports
+
+import space.kklochko.simple_jbdd.tests.factories.meta.AbstractTestCommandMetaDataFactory
+import space.kklochko.simple_jbdd.tests.reports.fmt.AbstractTestReportFormatter
+import space.kklochko.simple_jbdd.tests.reports.fmt.SimpleTestReportFormatter
+import spock.lang.Narrative
+import spock.lang.Specification
+import spock.lang.Subject
+import spock.lang.Title
+
+@Narrative("""The reporter must generate a report in the same format, so
+those tests check if the reporter generate it right.
+""")
+@Title("Unit tests for CLIReporter.format()")
+class CLIReporterFormatMethodSpec extends Specification {
+    private metaData
+
+    def setup() {
+        def factory = Mock(AbstractTestCommandMetaDataFactory) {
+            create() >> [
+                    new AbstractMap.SimpleEntry<>("Title", "A simple test"),
+                    new AbstractMap.SimpleEntry<>("Then", "Then block")
+            ]
+        }
+
+        def metaData = [
+                new AbstractMap.SimpleEntry<>(factory, true),
+                new AbstractMap.SimpleEntry<>(factory, false)
+        ]
+
+        this.metaData = metaData
+    }
+
+    def "Format function use formatter twice."() {
+        given: "I have a formatter"
+        def formatter = Mock(AbstractTestReportFormatter)
+
+        and: "I have a reporter"
+        @Subject
+        def reporter = new CLIReporter(metaData, formatter)
+
+        when: "Generate the summary format"
+        def formattedTestData = reporter.format()
+
+        then: "The methods must called 2 times"
+        2 * formatter.format()
+        2 * formatter.setPassed(_)
+        2 * formatter.setTestMetaData(_)
+
+        and: "The data must have 2 elements"
+        2 == formattedTestData.size()
+    }
+
+    def "Format function returns the formatted data."() {
+        given: "I have a formatter"
+        def formatter = new SimpleTestReportFormatter()
+
+        and: "I have a reporter"
+        @Subject
+        def reporter = new CLIReporter(metaData, formatter)
+
+        when: "Generate the summary format"
+        def formattedTestData = reporter.format()
+
+        then: "The format must have not null values"
+        formattedTestData.every({ it.getKey() != null })
+
+        and: "The data must have 2 elements"
+        2 == formattedTestData.size()
+    }
+}
+

src/test/groovy/space/kklochko/simple_jbdd/tests/reports/CLIReporterSpec.groovy

@@ -0,0 +1,77 @@
+package space.kklochko.simple_jbdd.tests.reports
+
+import space.kklochko.simple_jbdd.tests.factories.meta.AbstractTestCommandMetaDataFactory
+import space.kklochko.simple_jbdd.tests.reports.fmt.AbstractTestReportFormatter
+import space.kklochko.simple_jbdd.tests.reports.fmt.SimpleTestReportFormatter
+import spock.lang.Narrative
+import spock.lang.Specification
+import spock.lang.Subject
+import spock.lang.Title
+
+@Narrative("""The reporter must generate a report in the same format, so
+those tests check if the reporter generate it right.
+""")
+@Title("Unit tests for CLIReporter")
+class CLIReporterSpec extends Specification {
+    def "Function, getFailedTest, returns the data of failed tests."() {
+        given: "I have a reporter"
+        @Subject
+        def reporter = new CLIReporter(null, null)
+
+        and: "I have a testData"
+        def passedTestPair = new AbstractMap.SimpleEntry<>("Passed", true)
+        def failedTestPair = new AbstractMap.SimpleEntry<>("Failed", false)
+        def testData = Collections.nCopies(countPassed, passedTestPair) + Collections.nCopies(countFailed, failedTestPair)
+
+        when: "Generate the summary format"
+        def failedTestData = reporter.getFailedTests(testData)
+
+        then: "The format must be the same"
+        failedTestData.every({ it.getKey() == "Failed" && it.getValue() == false})
+        expectedFailedCount == failedTestData.size()
+
+        where: "Possible variants of tests"
+        countPassed | countFailed || expectedFailedCount
+        5           | 10          || 10
+    }
+
+    def "Count function returns the count of passed or failed tests."() {
+        given: "I have a reporter"
+        @Subject
+        def reporter = new CLIReporter(null, null)
+
+        and: "I have a testData"
+        def passedTestPair = new AbstractMap.SimpleEntry<>("Passed", true)
+        def failedTestPair = new AbstractMap.SimpleEntry<>("Failed", false)
+        def testData = Collections.nCopies(countPassed, passedTestPair) + Collections.nCopies(countFailed, failedTestPair)
+
+        when: "Generate the summary format"
+        def count = reporter.count(testData, isPassed)
+
+        then: "The format must be the same"
+        expectedCount == count
+
+        where: "Possible variants of tests"
+        countPassed | countFailed | isPassed || expectedCount
+        10          | 20          | true     || 10
+        10          | 20          | false    || 20
+    }
+
+    def "Summary format."() {
+        given: "I have a reporter"
+        @Subject
+        def reporter = new CLIReporter(null, null)
+
+        when: "Generate the summary format"
+        def format = reporter.summary(passed, failed)
+
+        then: "The format must be the same"
+        expectedFormat == format
+
+        where: "Possible variants of tests"
+        passed | failed || expectedFormat
+        10     | 20     || "Ran 30 tests.\nPassed: 10 (33.33%)\nFailed: 20 (66.67%)\n"
+        10     | 10     || "Ran 20 tests.\nPassed: 10 (50.00%)\nFailed: 10 (50.00%)\n"
+    }
+}
+

src/test/groovy/space/kklochko/simple_jbdd/tests/reports/fmt/SimpleTestReportFormatterSpec.groovy

@@ -0,0 +1,68 @@
+package space.kklochko.simple_jbdd.tests.reports.fmt
+
+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.commands.AbstractTestCommand
+import space.kklochko.simple_jbdd.tests.commands.decorators.BlockDecorator
+import space.kklochko.simple_jbdd.tests.factories.meta.TestCommandMetaDataFactory
+import spock.lang.Narrative
+import spock.lang.Specification
+import spock.lang.Subject
+import spock.lang.Title
+
+@Narrative("""The formatter must generate a format for the test command metadata, so
+those tests check if the formatter generate it right.
+""")
+@Title("Unit tests for SimpleTestReportFormatter")
+class SimpleTestReportFormatterSpec extends Specification {
+    def "If the map of methods have one test block."() {
+        given: "I have a metaData"
+        def metaData = [
+            new AbstractMap.SimpleEntry<>("Title", "A simple test"),
+            new AbstractMap.SimpleEntry<>("Then", "Then block")
+        ]
+
+        and: "I have the formatter object"
+        @Subject
+        def formatter = new SimpleTestReportFormatter(metaData, isPassed)
+
+        when: "Generate the format"
+        def format = formatter.format()
+
+        then: "The format must be the same"
+        expectedFormat == format
+
+        where: "Possible variants of tests"
+        isPassed || expectedFormat
+        true     || "✓ A simple test\n\tThen: Then block\n\n"
+        false    || "⨯ A simple test\n\tThen: Then block\n\n"
+    }
+
+    def "If the map of methods have GivenWhenThen blocks."() {
+        given: "I have a metaData"
+        def metaData = [
+            new AbstractMap.SimpleEntry<>("Title", "A simple test"),
+            new AbstractMap.SimpleEntry<>("Given", "Given block"),
+            new AbstractMap.SimpleEntry<>("When", "When block"),
+            new AbstractMap.SimpleEntry<>("Then", "Then block")
+        ]
+
+        and: "I have the formatter object"
+        @Subject
+        def formatter = new SimpleTestReportFormatter(metaData, isPassed)
+
+        when: "Generate the format"
+        def format = formatter.format()
+
+        then: "The format must be the same"
+        expectedFormat == format
+
+        where: "Possible variants of tests"
+        isPassed || expectedFormat
+        true     || "✓ A simple test\n\tGiven: Given block\n\tWhen: When block\n\tThen: Then block\n\n"
+        false    || "⨯ A simple test\n\tGiven: Given block\n\tWhen: When block\n\tThen: Then block\n\n"
+    }
+}
+