ProjectOperations: Add method to wipe all access sections

This commit adds a method to the project test framework that
allows us to wipe all access sections. This is useful when we
want to test against a 'clean' and defined set of permissions that
don't depend on Gerrit's default permissions.

Change-Id: I63a85b4077834e170b53c93f14b05da929a6dda1
(cherry picked from commit 9c170519b3545e2f401969e7b0d5cde907263999)
diff --git a/java/com/google/gerrit/acceptance/testsuite/project/ProjectOperationsImpl.java b/java/com/google/gerrit/acceptance/testsuite/project/ProjectOperationsImpl.java
index 7797fe0..62a560b 100644
--- a/java/com/google/gerrit/acceptance/testsuite/project/ProjectOperationsImpl.java
+++ b/java/com/google/gerrit/acceptance/testsuite/project/ProjectOperationsImpl.java
@@ -135,6 +135,9 @@
         throws IOException, ConfigInvalidException {
       try (MetaDataUpdate metaDataUpdate = metaDataUpdateFactory.create(nameKey)) {
         ProjectConfig projectConfig = projectConfigFactory.read(metaDataUpdate);
+        if (projectUpdate.removeAllAccessSections()) {
+          projectConfig.getAccessSections().forEach(as -> projectConfig.remove(as));
+        }
         removePermissions(projectConfig, projectUpdate.removedPermissions());
         addCapabilities(projectConfig, projectUpdate.addedCapabilities());
         addPermissions(projectConfig, projectUpdate.addedPermissions());
diff --git a/java/com/google/gerrit/acceptance/testsuite/project/TestProjectUpdate.java b/java/com/google/gerrit/acceptance/testsuite/project/TestProjectUpdate.java
index 734854b..739ed19 100644
--- a/java/com/google/gerrit/acceptance/testsuite/project/TestProjectUpdate.java
+++ b/java/com/google/gerrit/acceptance/testsuite/project/TestProjectUpdate.java
@@ -294,7 +294,8 @@
     return new AutoValue_TestProjectUpdate.Builder()
         .nameKey(nameKey)
         .allProjectsName(allProjectsName)
-        .projectUpdater(projectUpdater);
+        .projectUpdater(projectUpdater)
+        .removeAllAccessSections(false);
   }
 
   /** Builder for {@link TestProjectUpdate}. */
@@ -314,6 +315,16 @@
 
     abstract ImmutableMap.Builder<TestPermissionKey, Boolean> exclusiveGroupPermissionsBuilder();
 
+    abstract Builder removeAllAccessSections(boolean value);
+
+    /**
+     * Removes all access sections. Useful when testing against a specific set of access sections or
+     * permissions.
+     */
+    public Builder removeAllAccessSections() {
+      return removeAllAccessSections(true);
+    }
+
     /** Adds a permission to be included in this update. */
     public Builder add(TestPermission testPermission) {
       addedPermissionsBuilder().add(testPermission);
@@ -418,6 +429,8 @@
 
   abstract ThrowingConsumer<TestProjectUpdate> projectUpdater();
 
+  abstract boolean removeAllAccessSections();
+
   boolean hasCapabilityUpdates() {
     return !addedCapabilities().isEmpty()
         || removedPermissions().stream().anyMatch(k -> k.section().equals(GLOBAL_CAPABILITIES));
diff --git a/javatests/com/google/gerrit/acceptance/testsuite/project/ProjectOperationsImplTest.java b/javatests/com/google/gerrit/acceptance/testsuite/project/ProjectOperationsImplTest.java
index c7a8eb6..2a44571 100644
--- a/javatests/com/google/gerrit/acceptance/testsuite/project/ProjectOperationsImplTest.java
+++ b/javatests/com/google/gerrit/acceptance/testsuite/project/ProjectOperationsImplTest.java
@@ -562,6 +562,15 @@
   }
 
   @Test
+  public void removeAllAccessSections() {
+    projectOperations.allProjectsForUpdate().removeAllAccessSections().update();
+
+    assertThat(projectOperations.project(allProjects).getConfig())
+        .sectionValues("access")
+        .isEmpty();
+  }
+
+  @Test
   public void updatingCapabilitiesNotAllowedForNonAllProjects() throws Exception {
     Project.NameKey key = projectOperations.newProject().create();
     assertThrows(