test: fix clean up of tables with protected views (#2184)

Change-Id: I9a4de8ecdaa3a1d096117853cc27805c7544fe04

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Fixes #<issue_number_goes_here> ☕️

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Author: igorbernstein2

google-cloud-bigtable/src/test/java/com/google/cloud/bigtable/test_helpers/env/TestEnvRule.java

@@ -24,6 +24,7 @@
 import com.google.cloud.bigtable.admin.v2.models.AppProfile;
 import com.google.cloud.bigtable.admin.v2.models.Cluster;
 import com.google.cloud.bigtable.admin.v2.models.Instance;
+import com.google.cloud.bigtable.admin.v2.models.UpdateAuthorizedViewRequest;
 import com.google.common.base.Joiner;
 import com.google.common.base.Preconditions;
 import com.google.common.base.Strings;
@@ -203,6 +204,7 @@ private void cleanupStaleTables(String stalePrefix) {
         continue;
       }
       if (stalePrefix.compareTo(tableId) > 0) {
+        prepTableForDelete(tableId);
         try {
           env().getTableAdminClient().deleteTable(tableId);
         } catch (NotFoundException ignored) {
@@ -212,6 +214,21 @@ private void cleanupStaleTables(String stalePrefix) {
     }
   }
 
+  private void prepTableForDelete(String tableId) {
+    // Unprotected views
+    if (!(env() instanceof EmulatorEnv)) {
+      for (String viewId : env().getTableAdminClient().listAuthorizedViews(tableId)) {
+        try {
+          env()
+              .getTableAdminClient()
+              .updateAuthorizedView(
+                  UpdateAuthorizedViewRequest.of(tableId, viewId).setDeletionProtection(false));
+        } catch (NotFoundException ignored) {
+        }
+      }
+    }
+  }
+
   /**
    * Clean up AppProfile that were dynamically created in the default instance that have been
    * orphaned.