添加测试

.travis.yml

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+language: php
+
+php:
+  # using major version aliases
+
+  # aliased to a recent 5.4.x version
+  - 5.4
+  # aliased to a recent 5.5.x version
+  - 5.5
+  # aliased to a recent 5.6.x version
+  - 5.6
+  # hhvm
+  - hhvm
+
+before_script:
+  - composer self-update
+  - composer install --prefer-source --no-interaction --dev
+
+script: phpunit ./tests/*.php
+
+matrix:
+  fast_finish: true

tests/TestIp.php

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+<?php
+require __DIR__.'/../vendor/autoload.php';
+use Zhuzhichao\IpLocationZh\Ip;
+
+class TestIp extends PHPUnit_Framework_TestCase {
+	public function testIpLocation() {
+		$this->assertEquals(['中国', '河南', '郑州', ''], Ip::find('1.192.94.203'));
+		$this->assertEquals(['中国', '浙江', '杭州', ''], Ip::find('110.75.115.70'));
+	}
+}