Add missing fields for test runner

test/eth.feeHistory.js

@@ -5,6 +5,7 @@ var methodCall = 'eth_feeHistory';
 
 var tests = [{
     args: [4, "0xA30953", []],
+    formattedArgs: [4, "0xA30953", []],
     result: {
         "baseFeePerGas": [
           "0xa",
@@ -21,6 +22,22 @@ var tests = [{
         ],
         "oldestBlock": 10684752
     },
+    formattedResult: {
+        "baseFeePerGas": [
+          "0xa",
+          "0x9",
+          "0x8",
+          "0x9",
+          "0x9"
+        ],
+        "gasUsedRatio": [
+          0.003920375,
+          0.002625,
+          0.904999125,
+          0.348347625
+        ],
+        "oldestBlock": 10684752
+    },
     call: methodCall
 }];