feat: Add eth_getBlockTransactionCountByHash and eth_getBlockTransactionCountByNumber

SUPPORTED_APIS.md

@@ -33,8 +33,8 @@ The `status` options are:
 | [`ETH`](#eth-namespace) | [`eth_getBalance`](#eth_getbalance) | `SUPPORTED` | Returns the balance of the account of given address |
 | [`ETH`](#eth-namespace) | [`eth_getBlockByHash`](#eth_getblockbyhash) | `SUPPORTED` | Returns information about a block by block hash |
 | [`ETH`](#eth-namespace) | [`eth_getBlockByNumber`](#eth_getblockbynumber) | `SUPPORTED` | Returns information about a block by block number |
-| `ETH` | `eth_getBlockTransactionCountByHash` | `NOT IMPLEMENTED`<br />[GitHub Issue #44](https://github.com/matter-labs/era-test-node/issues/44) | Number of transactions in a block from a block matching the given block hash |
-| `ETH` | `eth_getBlockTransactionCountByNumber` | `NOT IMPLEMENTED`<br />[GitHub Issue #43](https://github.com/matter-labs/era-test-node/issues/43) | Number of transactions in a block from a block matching the given block number |
+| [`ETH`](#eth-namespace) | [`eth_getBlockTransactionCountByHash`](#eth_getblocktransactioncountbyhash) | `SUPPORTED` | Number of transactions in a block from a block matching the given block hash |
+| [`ETH`](#eth-namespace) | [`eth_getBlockTransactionCountByNumber`](#eth_getblocktransactioncountbynumber) | `SUPPORTED` | Number of transactions in a block from a block matching the given block number |
 | `ETH` | `eth_getCompilers` | `NOT IMPLEMENTED` | Returns a list of available compilers |
 | [`ETH`](#eth-namespace) | [`eth_getTransactionByHash`](#eth_gettransactionbyhash) | `SUPPORTED` | Returns the information about a transaction requested by transaction hash |
 | [`ETH`](#eth-namespace) | [`eth_getTransactionCount`](#eth_gettransactioncount) | `SUPPORTED` | Returns the number of transactions sent from an address |
@@ -512,6 +512,62 @@ curl --request POST \
 }'
 ```
 
+### `eth_getBlockTransactionCountByHash`
+
+[source](src/node.rs)
+
+Number of transactions in a block from a block matching the given block hash
+
+#### Arguments
+
++ `block_hash: H256`
+
+#### Status
+
+`SUPPORTED`
+
+#### Example
+
+```bash
+curl --request POST \
+  --url http://localhost:8011/ \
+  --header 'content-type: application/json' \
+  --data '{
+    "jsonrpc": "2.0",
+    "id": "1",
+    "method": "eth_getBlockTransactionCountByHash",
+    "params": ["0x0000000000000000000000000000000000000000000000000000000000000008"]
+}'
+```
+
+### `eth_getBlockTransactionCountByNumber`
+
+[source](src/node.rs)
+
+Number of transactions in a block from a block matching the given block number
+
+#### Arguments
+
++ `block_number: BlockNumber`
+
+#### Status
+
+`SUPPORTED`
+
+#### Example
+
+```bash
+curl --request POST \
+  --url http://localhost:8011/ \
+  --header 'content-type: application/json' \
+  --data '{
+    "jsonrpc": "2.0",
+    "id": "1",
+    "method": "eth_getBlockTransactionCountByNumber",
+    "params": ["latest"]
+}'
+```
+
 ### `eth_getCode`
 
 [source](src/node.rs)

src/fork.rs

@@ -221,7 +221,16 @@ pub trait ForkSource {
         &self,
         block_number: zksync_types::api::BlockNumber,
         full_transactions: bool,
-    ) -> eyre::Result<Option<zksync_types::api::Block<zksync_types::api::TransactionVariant>>>;
+    ) -> eyre::Result<Option<Block<TransactionVariant>>>;
+
+    /// Returns the  transaction count for a given block hash.
+    fn get_block_transaction_count_by_hash(&self, block_hash: H256) -> eyre::Result<Option<U256>>;
+
+    /// Returns the transaction count for a given block number.
+    fn get_block_transaction_count_by_number(
+        &self,
+        block_number: zksync_types::api::BlockNumber,
+    ) -> eyre::Result<Option<U256>>;
 }
 
 /// Holds the information about the original chain.

src/http_fork_source.rs

@@ -1,6 +1,7 @@
 use std::sync::RwLock;
 
 use eyre::Context;
+use zksync_basic_types::{H256, U256};
 use zksync_web3_decl::{
     jsonrpsee::http_client::{HttpClient, HttpClientBuilder},
     namespaces::{EthNamespaceClient, ZksNamespaceClient},
@@ -198,6 +199,27 @@ impl ForkSource for HttpForkSource {
         })
         .wrap_err("fork http client failed")
     }
+
+    /// Returns the  transaction count for a given block hash.
+    fn get_block_transaction_count_by_hash(&self, block_hash: H256) -> eyre::Result<Option<U256>> {
+        let client = self.create_client();
+        block_on(async move { client.get_block_transaction_count_by_hash(block_hash).await })
+            .wrap_err("fork http client failed")
+    }
+
+    /// Returns the transaction count for a given block number.
+    fn get_block_transaction_count_by_number(
+        &self,
+        block_number: zksync_types::api::BlockNumber,
+    ) -> eyre::Result<Option<U256>> {
+        let client = self.create_client();
+        block_on(async move {
+            client
+                .get_block_transaction_count_by_number(block_number)
+                .await
+        })
+        .wrap_err("fork http client failed")
+    }
 }
 
 #[cfg(test)]