Deleting rows in the trigger table inside a trigger could result in a NullPointerException.

h2/src/main/org/h2/index/PageDataLeaf.java

@@ -406,8 +406,8 @@ public class PageDataLeaf extends PageData {
 
     boolean remove(long key) {
         int i = find(key);
-        if (keys[i] != key) {
-            throw DbException.get(ErrorCode.ROW_NOT_FOUND_WHEN_DELETING_1, index.getSQL() + ": " + key + " " + keys[i]);
+        if (keys == null || keys[i] != key) {
+            throw DbException.get(ErrorCode.ROW_NOT_FOUND_WHEN_DELETING_1, index.getSQL() + ": " + key + " " + (keys == null ? -1 : keys[i]));
         }
         index.getPageStore().logUndo(this, data);
         if (entryCount == 1) {

h2/src/test/org/h2/test/TestBase.java

@@ -402,7 +402,7 @@ public abstract class TestBase {
      *
      * @throws AssertionError always throws an AssertionError
      */
-    protected void fail() {
+    public void fail() {
         fail("Unexpected success");
     }
 
@@ -1115,7 +1115,7 @@ public abstract class TestBase {
      *
      * @param e the error
      */
-    protected void assertKnownException(SQLException e) {
+    public void assertKnownException(SQLException e) {
         assertKnownException("", e);
     }