How to simulate incrementing block height for test

[andygolay]

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In a test, I have

        genesis::setup();
        let current_block_height = block::get_current_block_height();
        debug::print(&current_block_height);

The debug line outputs 0 as expected.

However, I don't see a way to advance to the next block.

Looks like block::public fun emit_writeset_block_event(vm_signer: &signer, fake_block_hash: address) requires a VM signer, not sure what other function would make sense.

If I run block::initialize_for_test(aptos_framework, 1); after genesis::setup() I get

 97 │         move_to<CommitHistory>(aptos_framework, CommitHistory {
│    │         ^^^^^^^ Test was not expected to error, but it gave a RESOURCE_ALREADY_EXISTS (code 4004) error with error message: "Failed to move resource into 0000000000000000000000000000000000000000000000000000000000000001". Error originating in the module 0000000000000000000000000000000000000000000000000000000000000001::block rooted here

If I run block::initialize_for_test(aptos_framework, 1); without running genesis::setup() I get

│ 778 │         let account = borrow_global_mut<Account>(addr);
│     │                       ^^^^^^^^^^^^^^^^^ Test was not expected to error, but it gave a MISSING_DATA (code 4008) error with error message: "Failed to borrow global resource from 0000000000000000000000000000000000000000000000000000000000000001". Error originating in the module 0000000000000000000000000000000000000000000000000000000000000001::account rooted here

which makes sense because genesis::setup() calls block::initialize_for_testing(), so it seems like genesis::setup() should suffice.

I was thinking maybe the epoch change automatically advances block height? But it doesn't seem like it because when I try

        timestamp::fast_forward_seconds(5);
        current_block_height = block::get_current_block_height();
        debug::print(&current_block_height);

it still prints the current block height of 0. Which also makes sense, as I wouldn't expect a change of epoch to produce new blocks.

That's what I've tried so far. How do I simulate the block height increasing for tests?

What error, if any, are you getting?

See "Describe your question in detail" field.

What have you tried or looked at? Or how can we reproduce the error?

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Which operating system are you using?

macOS

Which SDK or tool are you using? (if any)

Aptos CLI

Describe your environment or tooling in detail

No response