eth2.0-specs/tests/formats/bls/eth_aggregate_pubkeys.md

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# Test format: Ethereum-customized BLS pubkey aggregation
A BLS pubkey aggregation combines a series of pubkeys into a single pubkey.
## Test case format
The test data is declared in a `data.yaml` file:
```yaml
input: List[BLS Pubkey] -- list of input BLS pubkeys
output: BLSPubkey -- expected output, single BLS pubkeys or empty.
```
- `BLS Pubkey` here is encoded as a string: hexadecimal encoding of 48 bytes (96 nibbles), prefixed with `0x`.
- No output value if the input is invalid.
## Condition
The `eth_aggregate_pubkeys` handler should aggregate the signatures in the `input`, and the result should match the expected `output`.