stop database containers when spock execution ends (liquibase#2843)

The existing integration test framework was configured to stop TestSystem's when the cleanup: method was called. Spock internally called this method when it finished executing all of the tests in a class. Thus, when a particular test class was completed, its TestSystem was stopped, which in some cases was premature, since other classes might use the same TestSystem.

Instead, the TestSystem's should be stopped when Spock finishes executing all of the tests in all classes.

liquibase-extension-testing/src/main/java/liquibase/extension/testing/testsystem/spock/LiquibaseGlobalExtension.java

@@ -0,0 +1,28 @@
+package liquibase.extension.testing.testsystem.spock;
+
+import liquibase.extension.testing.testsystem.TestSystem;
+import org.spockframework.runtime.extension.IGlobalExtension;
+import org.spockframework.runtime.model.SpecInfo;
+
+public class LiquibaseGlobalExtension implements IGlobalExtension {
+    @Override
+    public void start() {
+
+    }
+
+    @Override
+    public void visitSpec(SpecInfo spec) {
+
+    }
+
+    @Override
+    public void stop() {
+        for (TestSystem startedTestSystem : LiquibaseIntegrationMethodInterceptor.startedTestSystems) {
+            try {
+                startedTestSystem.stop();
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+    }
+}

liquibase-extension-testing/src/main/java/liquibase/extension/testing/testsystem/spock/LiquibaseIntegrationMethodInterceptor.java

@@ -10,14 +10,12 @@
 import org.spockframework.runtime.model.FieldInfo;
 import org.spockframework.runtime.model.SpecInfo;
 
-import java.util.ArrayList;
-import java.util.List;
-import java.util.SortedSet;
-import java.util.TreeSet;
+import java.util.*;
 
 public class LiquibaseIntegrationMethodInterceptor extends AbstractMethodInterceptor {
 
     private static final SortedSet<TestSystem.Definition> testSystems = new TreeSet<>();
+    public static final Set<TestSystem> startedTestSystems = new HashSet<>();
 
     private final SpecInfo spec;
     private final LiquibaseIntegrationTestExtension.ErrorListener errorListener;
@@ -47,15 +45,6 @@ public void interceptSetupSpecMethod(IMethodInvocation invocation) throws Throwa
         invocation.proceed();
     }
 
-    @Override
-    public void interceptCleanupSpecMethod(IMethodInvocation invocation) throws Throwable {
-        final List<FieldInfo> containers = findAllContainers();
-        stopContainers(containers, invocation);
-
-        invocation.proceed();
-    }
-
-
     private List<FieldInfo> findAllContainers() {
         List<FieldInfo> returnList = new ArrayList<>();
         for (FieldInfo fieldInfo : spec.getAllFields()) {
@@ -74,6 +63,7 @@ private static void startContainers(List<FieldInfo> containers, IMethodInvocatio
             Assume.assumeTrue("Not running test against " + testSystem.getDefinition() + ": liquibase.sdk.testSystem.test is " + configuredTestSystems + " and liquibase.sdk.testSystem.skip is " + skippedTestSystems, testSystem.shouldTest());
 
             testSystem.start();
+            startedTestSystems.add(testSystem);
 
         }
     }

liquibase-extension-testing/src/main/resources/META-INF/services/org.spockframework.runtime.extension.IGlobalExtension

@@ -0,0 +1 @@
+liquibase.extension.testing.testsystem.spock.LiquibaseGlobalExtension