refactor: Add Number matcher class

src/PhpPact/Consumer/Matcher/Matchers/Number.php

@@ -0,0 +1,33 @@
+<?php
+
+namespace PhpPact\Consumer\Matcher\Matchers;
+
+use PhpPact\Consumer\Matcher\Generators\RandomInt;
+
+/**
+ * This checks if the type of the value is a number.
+ */
+class Number extends GeneratorAwareMatcher
+{
+    public function __construct(private int|float|null $value = null)
+    {
+        if ($value === null) {
+            $this->setGenerator(new RandomInt());
+        }
+    }
+
+    public function getType(): string
+    {
+        return 'number';
+    }
+
+    protected function getAttributesData(): array
+    {
+        return [];
+    }
+
+    protected function getValue(): int|float|null
+    {
+        return $this->value;
+    }
+}

tests/PhpPact/Consumer/Matcher/Matchers/NumberTest.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace PhpPactTest\Consumer\Matcher\Matchers;
+
+use PhpPact\Consumer\Matcher\Matchers\Number;
+
+class NumberTest extends GeneratorAwareMatcherTestCase
+{
+    protected function setUp(): void
+    {
+        $this->matcher = new Number();
+    }
+
+    /**
+     * @testWith [null, "{\"pact:matcher:type\":\"number\",\"pact:generator:type\":\"RandomInt\",\"min\":0,\"max\":10}"]
+     *           [123,  "{\"pact:matcher:type\":\"number\",\"value\":123}"]
+     *           [12.3, "{\"pact:matcher:type\":\"number\",\"value\":12.3}"]
+     */
+    public function testSerialize(int|float|null $value, string $json): void
+    {
+        $this->matcher = new Number($value);
+        $this->assertSame($json, json_encode($this->matcher));
+    }
+}