chore: drop EOL PHP versions

Seemed overdue to finally drop support for PHP 5.x, as well as 7.x as
the 7 series has also reached end of life.

Expanded testing to include both the soon to be released 8.3 and the
next development version 8.4.

.coveralls.yml

@@ -1 +0,0 @@
-service_name: travis-ci

.github/workflows/test.yml

@@ -0,0 +1,29 @@
+name: Test
+on: [push, pull_request]
+jobs:
+  test:
+    name: Test PHP ${{ matrix.php-version }}
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        php-version: ['8.0', '8.1', '8.2', '8.3', '8.4']
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+    - name: Setup PHP
+      uses: shivammathur/setup-php@v2
+      with:
+        php-version: ${{ matrix.php-version }}
+    - name: PHP Version
+      run: php --version
+    - name: Composer Version
+      run: composer --version
+    - name: Install Dependencies
+      run: COMPOSER_MEMORY_LIMIT=-1 composer install
+    - name: Run Tests
+      run: vendor/bin/phpunit --coverage-clover ./coverage.xml
+    - name: Upload Coverage
+      if: ${{ matrix.php-version == '8.2' }}
+      uses: codecov/codecov-action@v1
+      with:
+        file: ./coverage.xml

.travis.yml

@@ -1,40 +0,0 @@
-language: php
-dist: bionic
-sudo: required
-
-matrix:
-  include:
-    - php: 5.3
-      dist: precise
-    - php: 5.4
-      dist: trusty
-    - php: 5.5
-      dist: trusty
-    - php: 5.6
-      dist: trusty
-    - php: 7.0
-      dist: xenial
-    - php: 7.1
-    - php: 7.2
-    - php: 7.3
-    - php: 7.4
-      env: COVERAGE=true
-    - php: nightly
-  allow_failures:
-    - php: nightly
-
-install:
-  - php --version
-  - composer install
-
-before_script:
-  - mkdir -p build/logs
-
-script:
-  - vendor/bin/phpunit --coverage-clover build/logs/clover.xml
-
-after_success:
-  - |
-    if [[ $COVERAGE ]]; then
-      travis_retry php vendor/bin/php-coveralls --config .coveralls.yml -v
-    fi

LICENSE

@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2016, 2017, 2018, 2019 Gravity Boulevard, LLC
+Copyright (c) 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023 Gravity Boulevard, LLC
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -2,25 +2,11 @@
 
 [![License](https://img.shields.io/packagist/l/holidayapi/holidayapi-php?style=for-the-badge)](https://github.com/holidayapi/holidayapi-php/blob/master/LICENSE)
 ![PHP Version](https://img.shields.io/packagist/php-v/holidayapi/holidayapi-php?style=for-the-badge)
-![Build Status](https://img.shields.io/travis/holidayapi/holidayapi-php/master?style=for-the-badge)
-[![Coverage Status](https://img.shields.io/coveralls/github/holidayapi/holidayapi-php/master?style=for-the-badge)](https://coveralls.io/github/holidayapi/holidayapi-php?branch=master)
+[![Code Coverage](https://img.shields.io/codecov/c/github/holidayapi/holidayapi-php?style=for-the-badge)](https://codecov.io/gh/holidayapi/holidayapi-php)
 
 Official PHP library for [Holiday API](https://holidayapi.com) providing quick
 and easy access to holiday information from applications written in PHP.
 
-## Migrating from 1.x
-
-Please note, version 2.x of this library is a full rewrite of the 1.x series.
-The interfacing to the library has been simplified and existing applications
-upgrading to 2.x will need to be updated.
-
-| Version 1.x Syntax (Old)                   | Version 2.x Syntax (New)                                  |
-|--------------------------------------------|-----------------------------------------------------------|
-| `$holiday_api = new \HolidayAPI\v1($key);` | `$holiday_api = new \HolidayAPI\Client(['key' => $key]);` |
-
-Version 1.x of the library can still be found
-[here](https://github.com/joshtronic/php-holidayapi).
-
 ## Documentation
 
 Full documentation of the Holiday API endpoints is available
@@ -35,6 +21,7 @@ composer require holidayapi/holidayapi-php
 ## Usage
 
 ```php
+<?php
 $key = 'Insert your API key here';
 $holiday_api = new \HolidayAPI\Client(['key' => $key]);
 
@@ -64,12 +51,32 @@ try {
 #### Fetch all supported countries
 
 ```php
+<?php
 $holiday_api->countries();
 ```
 
-#### Search for a country by code or name
+#### Fetch only countries with public holidays
 
 ```php
+<?php
+$holiday_api->countries([
+  'public' => true,
+]);
+```
+
+#### Fetch a supported country by code
+
+```php
+<?php
+$holiday_api->countries([
+  'country' => 'NO',
+]);
+```
+
+#### Search for countries by code or name
+
+```php
+<?php
 $holiday_api->countries([
   'search' => 'united',
 ]);
@@ -80,12 +87,23 @@ $holiday_api->countries([
 #### Fetch all supported languages
 
 ```php
+<?php
 $holiday_api->languages();
 ```
 
-#### Search for a language by code or name
+#### Fetch a supported language by code
 
 ```php
+<?php
+$holiday_api->languages([
+  'language' => 'es',
+]);
+```
+
+#### Search for languages by code or name
+
+```php
+<?php
 $holiday_api->languages([
   'search' => 'Chinese',
 ]);
@@ -96,6 +114,7 @@ $holiday_api->languages([
 #### Fetch holidays for a specific year
 
 ```php
+<?php
 $holiday_api->holidays([
   'country' => 'US',
   'year' => 2019,
@@ -105,6 +124,7 @@ $holiday_api->holidays([
 #### Fetch holidays for a specific month
 
 ```php
+<?php
 $holiday_api->holidays([
   'country' => 'US',
   'year' => 2019,
@@ -115,6 +135,7 @@ $holiday_api->holidays([
 #### Fetch holidays for a specific day
 
 ```php
+<?php
 $holiday_api->holidays([
   'country' => 'US',
   'year' => 2019,
@@ -126,6 +147,7 @@ $holiday_api->holidays([
 #### Fetch upcoming holidays based on a specific date
 
 ```php
+<?php
 $holiday_api->holidays([
   'country' => 'US',
   'year' => 2019,
@@ -138,6 +160,7 @@ $holiday_api->holidays([
 #### Fetch previous holidays based on a specific date
 
 ```php
+<?php
 $holiday_api->holidays([
   'country' => 'US',
   'year' => 2019,
@@ -150,6 +173,7 @@ $holiday_api->holidays([
 #### Fetch only public holidays
 
 ```php
+<?php
 $holiday_api->holidays([
   'country' => 'US',
   'year' => 2019,
@@ -160,6 +184,7 @@ $holiday_api->holidays([
 #### Fetch holidays for a specific subdivision
 
 ```php
+<?php
 $holiday_api->holidays([
   'country' => 'GB-ENG',
   'year' => 2019,
@@ -169,6 +194,7 @@ $holiday_api->holidays([
 #### Include subdivision holidays with countrywide holidays
 
 ```php
+<?php
 $holiday_api->holidays([
   'country' => 'US',
   'year' => 2019,
@@ -179,6 +205,7 @@ $holiday_api->holidays([
 #### Search for a holiday by name
 
 ```php
+<?php
 $holiday_api->holidays([
   'country' => 'US',
   'year' => 2019,
@@ -189,6 +216,7 @@ $holiday_api->holidays([
 #### Translate holidays to another language
 
 ```php
+<?php
 $holiday_api->holidays([
   'country' => 'US',
   'year' => 2019,
@@ -199,6 +227,7 @@ $holiday_api->holidays([
 #### Fetch holidays for multiple countries
 
 ```php
+<?php
 $holiday_api->holidays([
   'country' => 'US,GB,NZ',
   'year' => 2019,
@@ -209,3 +238,29 @@ $holiday_api->holidays([
   'year' => 2019,
 ]);
 ```
+
+### Workday
+
+#### Fetch workday 7 business days after a date
+
+```php
+<?php
+$holiday_api->workday([
+  'country' => 'US',
+  'start' => '2019-07-01',
+  'days' => 7,
+]);
+```
+
+### Workdays
+
+#### Fetch number of workdays between two dates
+
+```php
+<?php
+$holiday_api->workdays([
+  'country' => 'US',
+  'start' => '2019-07-01',
+  'end' => '2019-07-10',
+]);
+```

codecov.yml

@@ -0,0 +1,20 @@
+codecov:
+  require_ci_to_pass: yes
+
+coverage:
+  precision: 2
+  round: down
+  range: "70...100"
+
+parsers:
+  gcov:
+    branch_detection:
+      conditional: yes
+      loop: yes
+      method: no
+      macro: no
+
+comment:
+  layout: "reach,diff,flags,tree"
+  behavior: default
+  require_changes: no

composer.json

@@ -1,7 +1,7 @@
 {
   "name": "holidayapi/holidayapi-php",
   "description": "Official PHP library for Holiday API",
-  "version": "2.1.0",
+  "version": "4.0.0",
   "type": "library",
   "keywords": [
     "calendar",
@@ -17,13 +17,21 @@
     "homepage": "https://holidayapi.com"
   }],
   "require": {
-    "php": ">=5.3"
+    "php": ">=8.0",
+    "ext-json": "*",
+    "ext-curl": "*"
   },
   "require-dev": {
-    "php-coveralls/php-coveralls": ">=1",
-    "phpunit/phpunit": ">=4"
+    "phpunit/phpunit": "^9.0"
   },
   "autoload": {
-    "psr-4": { "HolidayAPI\\": "src/" }
+    "psr-4": {
+      "HolidayAPI\\": "src/"
+    }
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "HolidayAPI\\Tests\\": "tests/"
+    }
   }
 }

phpunit.xml

@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <phpunit
   colors="true"
+  bootstrap="./vendor/autoload.php"
   convertErrorsToExceptions="true"
   convertNoticesToExceptions="true"
   convertWarningsToExceptions="true"

src/Client.php

@@ -55,32 +55,6 @@ class Client
     private function request($endpoint, $request)
     {
         return $this->handler->get($this->createUrl($endpoint, $request));
-
-        /*
-        $curl = curl_init();
-
-        curl_setopt_array($curl, array(
-            CURLOPT_URL => $this->createUrl($endpoint, $request),
-            CURLOPT_HEADER => false,
-            CURLOPT_SSL_VERIFYPEER => true,
-            CURLOPT_RETURNTRANSFER => true,
-        ));
-
-        $response = curl_exec($curl);
-
-        if ($error = curl_error($curl)) {
-            throw new \Exception($error);
-        }
-
-        curl_close($curl);
-        $response = json_decode($response, true);
-
-        if (!$response) {
-            throw new \Exception('Empty response received');
-        }
-
-        return $response;
-        */
     }
 
     public function countries($request = array())
@@ -90,17 +64,6 @@ class Client
 
     public function holidays($request)
     {
-        if (!isset($request['country'])) {
-            throw new \Exception('Missing country');
-        } elseif (!isset($request['year'])) {
-            throw new \Exception('Missing year');
-        } elseif (
-            isset($request['previous'], $request['upcoming'])
-            && $request['previous'] && $request['upcoming']
-        ) {
-            throw new \Exception('Previous and upcoming are mutually exclusive');
-        }
-
         return $this->request('holidays', $request);
     }
 
@@ -108,5 +71,15 @@ class Client
     {
         return $this->request('languages', $request);
     }
+
+    public function workday($request)
+    {
+        return $this->request('workday', $request);
+    }
+
+    public function workdays($request)
+    {
+        return $this->request('workdays', $request);
+    }
 }
 

tests/ClientTest.php

@@ -2,56 +2,72 @@
 namespace HolidayAPI\Tests;
 use HolidayAPI\Client;
 use HolidayAPI\Request;
+use PHPUnit\Framework\TestCase;
 
-require __DIR__ . '/../vendor/autoload.php';
-
-if (
-    !class_exists('\PHPUnit_Framework_TestCase')
-    && class_exists('\PHPUnit\Framework\TestCase')
-) {
-    class_alias('\PHPUnit\Framework\TestCase', '\PHPUnit_Framework_TestCase');
-}
-
-class ClientTest extends \PHPUnit_Framework_TestCase
+class ClientTest extends TestCase
 {
     const BASE_URL = 'https://holidayapi.com/v1/';
     const KEY = '8e4de28c-4b18-49f0-9aba-0bd6b424fc38';
 
     public function testMissingKey()
     {
+        if (version_compare(PHP_VERSION, '7.3.0', '>=')) {
+            $assertRegExp = 'assertMatchesRegularExpression';
+        } else {
+            $assertRegExp = 'assertRegExp';
+        }
+
         try {
-            $client = new Client(array());
+            new Client(array());
         } catch (\Exception $e) {
-            $this->assertRegExp('/missing api key/i', $e->getMessage());
+            $this->$assertRegExp('/missing api key/i', $e->getMessage());
         }
     }
 
     public function testInvalidKey()
     {
+        if (version_compare(PHP_VERSION, '7.3.0', '>=')) {
+            $assertRegExp = 'assertMatchesRegularExpression';
+        } else {
+            $assertRegExp = 'assertRegExp';
+        }
+
         try {
-            $client = new Client(array(
+            new Client(array(
                 'key' => 'zzzzzzzz-zzzz-zzzz-zzzz-zzzzzzzzzzzz',
             ));
         } catch (\Exception $e) {
-            $this->assertRegExp('/invalid api key/i', $e->getMessage());
+            $this->$assertRegExp('/invalid api key/i', $e->getMessage());
         }
     }
 
     public function testVersionTooLow()
     {
+        if (version_compare(PHP_VERSION, '7.3.0', '>=')) {
+            $assertRegExp = 'assertMatchesRegularExpression';
+        } else {
+            $assertRegExp = 'assertRegExp';
+        }
+
         try {
-            $client = new Client(array('key' => self::KEY, 'version' => 0));
+            new Client(array('key' => self::KEY, 'version' => 0));
         } catch (\Exception $e) {
-            $this->assertRegExp('/invalid version/i', $e->getMessage());
+            $this->$assertRegExp('/invalid version/i', $e->getMessage());
         }
     }
 
     public function testVersionTooHigh()
     {
+        if (version_compare(PHP_VERSION, '7.3.0', '>=')) {
+            $assertRegExp = 'assertMatchesRegularExpression';
+        } else {
+            $assertRegExp = 'assertRegExp';
+        }
+
         try {
-            $client = new Client(array('key' => self::KEY, 'version' => 2));
+            new Client(array('key' => self::KEY, 'version' => 2));
         } catch (\Exception $e) {
-            $this->assertRegExp('/invalid version/i', $e->getMessage());
+            $this->$assertRegExp('/invalid version/i', $e->getMessage());
         }
     }
 
@@ -97,40 +113,6 @@ class ClientTest extends \PHPUnit_Framework_TestCase
         ), $client->countries());
     }
 
-    public function testSearchCountries()
-    {
-        $url = self::BASE_URL . 'countries?key=' . self::KEY . '&search=Sao';
-
-        $request = new Request(array(
-            'execute' => array(
-                $url => function ()
-                {
-                    return json_encode(array(
-                        'status' => 200,
-                        'countries' => array(
-                            array(
-                                'code' => 'ST',
-                                'name' => 'Sao Tome and Principle',
-                            ),
-                        ),
-                    ));
-                },
-            ),
-        ));
-
-        $client = new Client(array('key' => self::KEY, 'handler' => $request));
-
-        $this->assertEquals(array(
-            'status' => 200,
-            'countries' => array(
-                array(
-                    'code' => 'ST',
-                    'name' => 'Sao Tome and Principle',
-                ),
-            ),
-        ), $client->countries(array('search' => 'Sao')));
-    }
-
     public function testCountriesRaise4xxErrors()
     {
         $url = self::BASE_URL . 'countries?key=' . self::KEY;
@@ -187,8 +169,7 @@ class ClientTest extends \PHPUnit_Framework_TestCase
 
     public function testReturnHolidays()
     {
-        $url = self::BASE_URL . 'holidays?key=' . self::KEY
-            . '&country=US&year=2015&month=7&day=4';
+        $url = self::BASE_URL . 'holidays?key=' . self::KEY . '&country=US&year=2015&month=7&day=4';
 
         $request = new Request(array(
             'execute' => array(
@@ -229,89 +210,6 @@ class ClientTest extends \PHPUnit_Framework_TestCase
         )));
     }
 
-    public function testSearchHolidays()
-    {
-        $url = self::BASE_URL . 'holidays?key=' . self::KEY
-            . '&country=US&year=2015&search=Independence';
-
-        $request = new Request(array(
-            'execute' => array(
-                $url => function ()
-                {
-                    return json_encode(array(
-                        'status' => 200,
-                        'holidays' => array(
-                            array(
-                                'name' => 'Independence Day',
-                                'date' => '2015-07-04',
-                                'observed' => '2015-07-03',
-                                'public' => true,
-                            ),
-                        ),
-                    ));
-                },
-            ),
-        ));
-
-        $client = new Client(array('key' => self::KEY, 'handler' => $request));
-
-        $this->assertEquals(array(
-            'status' => 200,
-            'holidays' => array(
-                array(
-                    'name' => 'Independence Day',
-                    'date' => '2015-07-04',
-                    'observed' => '2015-07-03',
-                    'public' => true,
-                ),
-            ),
-        ), $client->holidays(array(
-            'country' => 'US',
-            'year' => 2015,
-            'search' => 'Independence',
-        )));
-    }
-
-    public function testCountryMissing()
-    {
-        $client = new Client(array('key' => self::KEY));
-
-        try {
-            $client->holidays(array('year' => 2015));
-        } catch (\Exception $e) {
-            $this->assertRegExp('/missing country/i', $e->getMessage());
-        }
-    }
-
-    public function testYearMissing()
-    {
-        $client = new Client(array('key' => self::KEY));
-
-        try {
-            $client->holidays(array('country' => 'US'));
-        } catch (\Exception $e) {
-            $this->assertRegExp('/missing year/i', $e->getMessage());
-        }
-    }
-
-    public function testBothPreviousAndUpcoming()
-    {
-        $client = new Client(array('key' => self::KEY));
-
-        try {
-            $client->holidays(array(
-                'country' => 'US',
-                'year' => 2015,
-                'month' => 7,
-                'day' => 4,
-                'upcoming' => true,
-                'previous' => true,
-            ));
-        } catch (\Exception $e) {
-            $this->assertRegExp('/previous and upcoming/i', $e->getMessage());
-        }
-    }
-
     public function testHolidaysRaise4xxErrors()
     {
         $url = self::BASE_URL . 'holidays?key=' . self::KEY . '&country=US&year=2019';
@@ -400,40 +298,6 @@ class ClientTest extends \PHPUnit_Framework_TestCase
         ), $client->languages());
     }
 
-    public function testSearchLanguages()
-    {
-        $url = self::BASE_URL . 'languages?key=' . self::KEY . '&search=Eng';
-
-        $request = new Request(array(
-            'execute' => array(
-                $url => function ()
-                {
-                    return json_encode(array(
-                        'status' => 200,
-                        'languages' => array(
-                            array(
-                                'code' => 'en',
-                                'name' => 'English',
-                            ),
-                        ),
-                    ));
-                },
-            ),
-        ));
-
-        $client = new Client(array('key' => self::KEY, 'handler' => $request));
-
-        $this->assertEquals(array(
-            'status' => 200,
-            'languages' => array(
-                array(
-                    'code' => 'en',
-                    'name' => 'English',
-                ),
-            ),
-        ), $client->languages(array('search' => 'Eng')));
-    }
-
     public function testLanguagesRaise4xxErrors()
     {
         $url = self::BASE_URL . 'languages?key=' . self::KEY;
@@ -487,5 +351,189 @@ class ClientTest extends \PHPUnit_Framework_TestCase
             $this->assertSame('Internal server error', $e->getMessage());
         }
     }
+
+    public function testReturnWorkday()
+    {
+        $url = self::BASE_URL . 'workday?key=' . self::KEY . '&country=US&start=2019-07-01&days=10';
+
+        $request = new Request(array(
+            'execute' => array(
+                $url => function ()
+                {
+                    return json_encode(array(
+                        'status' => 200,
+                        'workday' => array(
+                            'date' => '2019-07-16',
+                        ),
+                    ));
+                },
+            ),
+        ));
+
+        $client = new Client(array('key' => self::KEY, 'handler' => $request));
+
+        $this->assertEquals(array(
+            'status' => 200,
+            'workday' => array(
+                'date' => '2019-07-16',
+            ),
+        ), $client->workday(array(
+            'country' => 'US',
+            'start' => '2019-07-01',
+            'days' => 10,
+        )));
+    }
+
+    public function testWorkdayRaise4xxErrors()
+    {
+        $url = self::BASE_URL . 'workday?key=' . self::KEY . '&country=US&start=2019-07-01&days=10';
+
+        $request = new Request(array(
+            'execute' => array(
+                $url => function ()
+                {
+                    return json_encode(array(
+                        'status' => 429,
+                        'error' => 'Rate limit exceeded',
+                    ));
+                },
+            ),
+        ));
+
+        $client = new Client(array('key' => self::KEY, 'handler' => $request));
+
+        try {
+            $client->workday(array(
+                'country' => 'US',
+                'start' => '2019-07-01',
+                'days' => 10,
+            ));
+        } catch (\Exception $e) {
+            $this->assertSame(429, $e->getCode());
+            $this->assertSame('Rate limit exceeded', $e->getMessage());
+        }
+    }
+
+    public function testWorkdayRaise5xxErrors()
+    {
+        $url = self::BASE_URL . 'workday?key=' . self::KEY . '&country=US&start=2019-07-01&days=10';
+
+        $request = new Request(array(
+            'execute' => array(
+                $url => function ()
+                {
+                    return false;
+                },
+            ),
+            'error' => array(
+                $url => function ()
+                {
+                    return 'Internal server error';
+                },
+            ),
+        ));
+
+        $client = new Client(array('key' => self::KEY, 'handler' => $request));
+
+        try {
+            $client->workday(array(
+                'country' => 'US',
+                'start' => '2019-07-01',
+                'days' => 10,
+            ));
+        } catch (\Exception $e) {
+            $this->assertSame('Internal server error', $e->getMessage());
+        }
+    }
+
+    public function testReturnWorkdays()
+    {
+        $url = self::BASE_URL . 'workdays?key=' . self::KEY . '&country=US&start=2019-07-01&end=2019-07-10';
+
+        $request = new Request(array(
+            'execute' => array(
+                $url => function ()
+                {
+                    return json_encode(array(
+                        'status' => 200,
+                        'workdays' => 7,
+                    ));
+                },
+            ),
+        ));
+
+        $client = new Client(array('key' => self::KEY, 'handler' => $request));
+
+        $this->assertEquals(array(
+            'status' => 200,
+            'workdays' => 7,
+        ), $client->workdays(array(
+            'country' => 'US',
+            'start' => '2019-07-01',
+            'end' => '2019-07-10',
+        )));
+    }
+
+    public function testWorkdaysRaise4xxErrors()
+    {
+        $url = self::BASE_URL . 'workdays?key=' . self::KEY . '&country=US&start=2019-07-01&end=2019-07-10';
+
+        $request = new Request(array(
+            'execute' => array(
+                $url => function ()
+                {
+                    return json_encode(array(
+                        'status' => 429,
+                        'error' => 'Rate limit exceeded',
+                    ));
+                },
+            ),
+        ));
+
+        $client = new Client(array('key' => self::KEY, 'handler' => $request));
+
+        try {
+            $client->workdays(array(
+                'country' => 'US',
+                'start' => '2019-07-01',
+                'end' => '2019-07-10',
+            ));
+        } catch (\Exception $e) {
+            $this->assertSame(429, $e->getCode());
+            $this->assertSame('Rate limit exceeded', $e->getMessage());
+        }
+    }
+
+    public function testWorkdaysRaise5xxErrors()
+    {
+        $url = self::BASE_URL . 'workdays?key=' . self::KEY . '&country=US&start=2019-07-01&end=2019-07-10';
+
+        $request = new Request(array(
+            'execute' => array(
+                $url => function ()
+                {
+                    return false;
+                },
+            ),
+            'error' => array(
+                $url => function ()
+                {
+                    return 'Internal server error';
+                },
+            ),
+        ));
+
+        $client = new Client(array('key' => self::KEY, 'handler' => $request));
+
+        try {
+            $client->workdays(array(
+                'country' => 'US',
+                'start' => '2019-07-01',
+                'end' => '2019-07-10',
+            ));
+        } catch (\Exception $e) {
+            $this->assertSame('Internal server error', $e->getMessage());
+        }
+    }
 }
 

tests/RequestTest.php

@@ -1,18 +1,9 @@
 <?php
 namespace HolidayAPI\Tests;
-use HolidayAPI\Client;
 use HolidayAPI\Request;
+use PHPUnit\Framework\TestCase;
 
-require __DIR__ . '/../vendor/autoload.php';
-
-if (
-    !class_exists('\PHPUnit_Framework_TestCase')
-    && class_exists('\PHPUnit\Framework\TestCase')
-) {
-    class_alias('\PHPUnit\Framework\TestCase', '\PHPUnit_Framework_TestCase');
-}
-
-class RequestTest extends \PHPUnit_Framework_TestCase
+class RequestTest extends TestCase
 {
     public function testExecute()
     {
@@ -24,6 +15,12 @@ class RequestTest extends \PHPUnit_Framework_TestCase
 
     public function testGet()
     {
+        if (version_compare(PHP_VERSION, '7.3.0', '>=')) {
+            $assertRegExp = 'assertMatchesRegularExpression';
+        } else {
+            $assertRegExp = 'assertRegExp';
+        }
+
         $url = 'https://holidayapi.com';
 
         $request = new Request(array(
@@ -38,7 +35,7 @@ class RequestTest extends \PHPUnit_Framework_TestCase
         try {
             $request->get($url);
         } catch (\Exception $e) {
-            $this->assertRegExp('/empty response/i', $e->getMessage());
+            $this->$assertRegExp('/empty response/i', $e->getMessage());
         }
     }
 }