Add block tag support for eth_feeHistory (#4224)

* Accept predefined block numbers for eth_feeHistory (#4213)

* Accept predefined block numbers for eth_feeHistory

* Update feeHistory tests to reflect new input formatter

Co-authored-by: Wyatt Barnes <[email protected]>

* Add block tag tests

* Update CHANGELOG

* Replace inputFormatter with null to match existing code

Co-authored-by: brg8 <[email protected]>

Author: spacesailor24

CHANGELOG.md

@@ -424,4 +424,5 @@ Released with 1.0.0-beta.37 code base.
 
 - `maxPriorityFeePerGas` and `maxFeePerGas` now included in `_txInputFormatter` (#4217)
 - If `maxPriorityFeePerGas` of `maxFeePerGas` present `_txInputFormatter` deletes `tx.gasPrice` (fixes #4211) (#4217)
+- Add block tag support (e.g. `latest`, `pending`, `earliest`) to `getFeeHistory` (#4224)
 - Support for EIP-1559 to `web3.eth.sendTransaction` (#4220)

packages/web3-eth/src/index.js

@@ -389,7 +389,7 @@ var Eth = function Eth() {
             name: 'getFeeHistory',
             call: 'eth_feeHistory',
             params: 3,
-            inputFormatter: [utils.toNumber, utils.toHex, function(value) {return value}]
+            inputFormatter: [utils.toNumber, formatter.inputBlockNumberFormatter, null]
         }),
         new Method({
             name: 'getAccounts',

test/eth.feeHistory.js

@@ -8,7 +8,7 @@ var methodCall = 'eth_feeHistory';
 var tests = [
     {
         args: [4, "0xA30953", []],
-        formattedArgs: [4, "0xA30953", []],
+        formattedArgs: [4, "0xa30953", []],
         result: {
             "baseFeePerGas": [
             "0xa",
@@ -116,6 +116,117 @@ var tests = [
             "oldestBlock": 10684752
         },
         call: methodCall
+    },
+    {
+        args: [4, 'latest', []],
+        formattedArgs: [4, 'latest', []],
+        result: {
+            "baseFeePerGas": [
+            "0xa",
+            "0x9",
+            "0x8",
+            "0x9",
+            "0x9"
+            ],
+            "gasUsedRatio": [
+            0.003920375,
+            0.002625,
+            0.904999125,
+            0.348347625
+            ],
+            "oldestBlock": 10684752
+        },
+        formattedResult: {
+            "baseFeePerGas": [
+            "0xa",
+            "0x9",
+            "0x8",
+            "0x9",
+            "0x9"
+            ],
+            "gasUsedRatio": [
+            0.003920375,
+            0.002625,
+            0.904999125,
+            0.348347625
+            ],
+            "oldestBlock": 10684752
+        },
+        call: methodCall
+    },
+    {
+        args: [4, 'earliest', []],
+        formattedArgs: [4, 'earliest', []],
+        result: {
+            "baseFeePerGas": [
+            "0xa",
+            "0x9",
+            "0x8",
+            "0x9",
+            "0x9"
+            ],
+            "gasUsedRatio": [
+            0.003920375,
+            0.002625,
+            0.904999125,
+            0.348347625
+            ],
+            "oldestBlock": 10684752
+        },
+        formattedResult: {
+            "baseFeePerGas": [
+            "0xa",
+            "0x9",
+            "0x8",
+            "0x9",
+            "0x9"
+            ],
+            "gasUsedRatio": [
+            0.003920375,
+            0.002625,
+            0.904999125,
+            0.348347625
+            ],
+            "oldestBlock": 10684752
+        },
+        call: methodCall
+    },
+    {
+        args: [4, 'pending', []],
+        formattedArgs: [4, 'pending', []],
+        result: {
+            "baseFeePerGas": [
+            "0xa",
+            "0x9",
+            "0x8",
+            "0x9",
+            "0x9"
+            ],
+            "gasUsedRatio": [
+            0.003920375,
+            0.002625,
+            0.904999125,
+            0.348347625
+            ],
+            "oldestBlock": 10684752
+        },
+        formattedResult: {
+            "baseFeePerGas": [
+            "0xa",
+            "0x9",
+            "0x8",
+            "0x9",
+            "0x9"
+            ],
+            "gasUsedRatio": [
+            0.003920375,
+            0.002625,
+            0.904999125,
+            0.348347625
+            ],
+            "oldestBlock": 10684752
+        },
+        call: methodCall
     }
 ];