test: introduce vector 52

components/chainhook-sdk/src/indexer/stacks/blocks_pool.rs

@@ -330,6 +330,16 @@ impl StacksBlockPool {
         microblocks: Vec<StacksMicroblockData>,
         ctx: &Context,
     ) -> Result<Option<StacksChainEvent>, String> {
+        if self.block_store.is_empty() {
+            ctx.try_log(|logger| {
+                slog::info!(
+                    logger,
+                    "Ignoring microblock trail, fork tracking will start with the next anchor block"
+                )
+            });
+            return Ok(None);
+        }
+
         ctx.try_log(|logger| {
             slog::info!(logger, "Start processing {} microblocks", microblocks.len())
         });

components/chainhook-sdk/src/indexer/stacks/tests.rs

@@ -254,3 +254,8 @@ fn test_stacks_vector_050() {
 fn test_stacks_vector_051() {
     process_stacks_blocks_and_check_expectations(helpers::stacks_shapes::get_vector_051());
 }
+
+#[test]
+fn test_stacks_vector_052() {
+    process_stacks_blocks_and_check_expectations(helpers::stacks_shapes::get_vector_052());
+}

components/chainhook-sdk/src/indexer/tests/helpers/stacks_shapes.rs

@@ -3717,3 +3717,25 @@ pub fn get_vector_051() -> Vec<(BlockEvent, StacksChainEventExpectation)> {
         ),
     ]
 }
+
+/// Vector 052: Generate the following blocks
+///
+///  [a1](1) - [b1](2) - B1(3)
+/// 
+///
+pub fn get_vector_052() -> Vec<(BlockEvent, StacksChainEventExpectation)> {
+    vec![
+        (
+            microblocks::a1(stacks_blocks::A1(None), None),
+            expect_no_chain_update(),
+        ),
+        (
+            microblocks::b1(stacks_blocks::A1(None), None),
+            expect_no_chain_update(),
+        ),
+        (
+            stacks_blocks::B1(None),
+            expect_chain_updated_with_block(stacks_blocks::B1(None), vec![]),
+        ),
+    ]
+}