fix ProjectOpeningTest

GitOrigin-RevId: 75548ee7fd3a7319c2b8d2d7c0dd57a48d202403

platform/extensions/src/com/intellij/openapi/extensions/impl/ExtensionPointImpl.java

@@ -294,6 +294,13 @@ public abstract class ExtensionPointImpl<T> implements ExtensionPoint<T>, Iterab
     assertBeforeProcessing();
     CHECK_CANCELED.run();
 
+    if (isInReadOnlyMode()) {
+      for (T extension : myExtensionsCache) {
+        consumer.accept(extension, myDescriptor /* doesn't matter for tests */);
+      }
+      return;
+    }
+
     List<ExtensionComponentAdapter> adapters = myAdapters;
     int size = adapters.size();
     if (size == 0) {
@@ -376,6 +383,7 @@ public abstract class ExtensionPointImpl<T> implements ExtensionPoint<T>, Iterab
   @NotNull
   private synchronized T[] processAdapters() {
     assertBeforeProcessing();
+    assertNotReadOnlyMode();
 
     long startTime = StartUpMeasurer.getCurrentTime();
 
@@ -473,7 +481,6 @@ public abstract class ExtensionPointImpl<T> implements ExtensionPoint<T>, Iterab
       throw new IllegalStateException("Recursive processAdapters() detected. You must have called 'getExtensions()' from within your extension constructor - don't. " +
                                       "Either pass extension via constructor parameter or call getExtensions() later.");
     }
-    assertNotReadOnlyMode();
   }
 
   // used in upsource
@@ -529,13 +536,15 @@ public abstract class ExtensionPointImpl<T> implements ExtensionPoint<T>, Iterab
     myExtensionsCacheAsArray = list.toArray(ArrayUtil.newArray(getExtensionClass(), 0));
     POINTS_IN_READONLY_MODE.add(this);
 
-    if (oldList != null) {
-      for (T extension : oldList) {
-        notifyListenersOnRemove(extension, null, myListeners);
+    if (myListeners.length > 0) {
+      if (oldList != null) {
+        for (T extension : oldList) {
+          notifyListenersOnRemove(extension, null, myListeners);
+        }
+      }
+      for (T extension : list) {
+        notifyListenersOnAdd(extension, null, myListeners);
       }
-    }
-    for (T extension : list) {
-      notifyListenersOnAdd(extension, null, myListeners);
     }
 
     Disposer.register(parentDisposable, new Disposable() {

platform/platform-tests/testSrc/com/intellij/openapi/project/impl/ProjectOpeningTest.java

@@ -17,25 +17,26 @@ import org.jetbrains.annotations.Nullable;
 
 import java.io.File;
 import java.io.IOException;
+import java.util.Collections;
 
 import static com.intellij.openapi.startup.StartupActivity.POST_STARTUP_ACTIVITY;
+import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
 
 /**
  * @author Dmitry Avdeev
  */
 public class ProjectOpeningTest extends PlatformTestCase {
   public void testOpenProjectCancelling() throws Exception {
-    File foo = createTempDir("foo");
     Project project = null;
     MyStartupActivity activity = new MyStartupActivity();
-    POST_STARTUP_ACTIVITY.getPoint(null).registerExtension(activity, getTestRootDisposable());
-
+    PlatformTestUtil.maskExtensions(POST_STARTUP_ACTIVITY, Collections.singletonList(activity), getTestRootDisposable());
     try {
       ProjectManagerEx manager = ProjectManagerEx.getInstanceEx();
+      File foo = createTempDir("foo");
       project = manager.createProject(null, foo.getPath());
-      assertFalse(manager.openProject(project));
-      assertFalse(project.isOpen());
-      assertTrue(activity.passed);
+      assertThat(manager.openProject(project)).isFalse();
+      assertThat(project.isOpen()).isFalse();
+      assertThat(activity.passed).isTrue();
     }
     finally {
       closeProject(project);