Format the response from eth_feeHistory

src/Formatters/FeeHistoryFormatter.php

@@ -0,0 +1,46 @@
+<?php
+
+/**
+ * This file is part of web3.php package.
+ * 
+ * (c) Kuan-Cheng,Lai <[email protected]>
+ * 
+ * @author Peter Lai <[email protected]>
+ * @license MIT
+ */
+
+namespace Web3\Formatters;
+
+use InvalidArgumentException;
+use Web3\Utils;
+use Web3\Formatters\IFormatter;
+use Web3\Formatters\BigNumberFormatter;
+
+class FeeHistoryFormatter implements IFormatter
+{
+    /**
+     * format
+     * 
+     * @param mixed $value
+     * @return string
+     */
+    public static function format($value)
+    {
+        if (isset($value->oldestBlock)) {
+            $value->oldestBlock = BigNumberFormatter::format($value->oldestBlock);
+        }
+        if (isset($value->baseFeePerGas)) {
+            foreach ($value->baseFeePerGas as $key => $baseFeePerGas) {
+                $value->baseFeePerGas[$key] = BigNumberFormatter::format($baseFeePerGas);
+            }
+        }
+        if (isset($value->reward)) {
+            foreach ($value->reward as $keyOut => $rewards) {
+                foreach ($rewards as $keyIn => $reward) {
+                    $value->reward[$keyOut][$keyIn] = BigNumberFormatter::format($reward);
+                }
+            }
+        }
+        return $value;
+    }
+}

src/Methods/Eth/FeeHistory.php

@@ -18,6 +18,7 @@
 use Web3\Validators\ArrayNumberValidator;
 use Web3\Formatters\QuantityFormatter;
 use Web3\Formatters\OptionalQuantityFormatter;
+use Web3\Formatters\FeeHistoryFormatter;
 
 class FeeHistory extends EthMethod
 {
@@ -47,6 +48,7 @@ class FeeHistory extends EthMethod
      * @var array
      */
     protected $outputFormatters = [
+        FeeHistoryFormatter::class
     ];
 
     /**

test/unit/ArrayNumberValidatorTest.php

@@ -0,0 +1,43 @@
+<?php
+
+namespace Test\Unit;
+
+use Test\TestCase;
+use Web3\Validators\ArrayNumberValidator;
+
+class ArrayNumberValidatorTest extends TestCase
+{
+    /**
+     * validator
+     * 
+     * @var \Web3\Validators\ArrayNumberValidator
+     */
+    protected $validator;
+
+    /**
+     * setUp
+     * 
+     * @return void
+     */
+    public function setUp(): void
+    {
+        parent::setUp();
+        $this->validator = new ArrayNumberValidator;
+    }
+
+    /**
+     * testValidate
+     * 
+     * @return void
+     */
+    public function testValidate()
+    {
+        $validator = $this->validator;
+
+        $this->assertEquals(false, $validator->validate(1));
+        $this->assertEquals(false, $validator->validate(0.1));
+        $this->assertEquals(false, $validator->validate('test'));
+        $this->assertEquals(false, $validator->validate([1, 0.1, 'test']));
+        $this->assertEquals(true, $validator->validate([1, 0.1]));
+    }
+}

test/unit/EthApiTest.php

@@ -727,11 +727,17 @@ public function testFeeHistory()
     {
         $eth = $this->eth;
 
-        $eth->feeHistory(1, 'latest', [ 1 ], function ($err, $feeHistory) {
+        $eth->feeHistory(1, 'latest', [ 1, 40, 50 ], function ($err, $feeHistory) {
             if ($err !== null) {
                 return $this->fail($err->getMessage());
             }
             $this->assertTrue($feeHistory->oldestBlock !== null);
+            $this->assertTrue($feeHistory->baseFeePerGas !== null);
+            $this->assertTrue($feeHistory->gasUsedRatio !== null);
+            $this->assertEquals(count($feeHistory->gasUsedRatio), 1);
+            $this->assertTrue($feeHistory->reward !== null);
+            $this->assertEquals(count($feeHistory->reward), 1);
+            $this->assertEquals(count($feeHistory->reward[0]), 3);
         });
     }