requirement tests for wp, php, module, wp_plugin

composer.json

@@ -22,7 +22,7 @@
 
     },
     "autoload-dev": {
-        "classmap": ["src"]
+        "classmap": ["src", "tests"]
     },
     "scripts": {
         "phpcs": "phpcs",

phpunit-unit.xml

 <phpunit bootstrap="tests/unit/bootstrap.php">
     <testsuites>
         <testsuite>
-            <directory prefix="test-" suffix=".php">./tests/unit/</directory>
+            <directory prefix="Test_" suffix=".php">./tests/unit/</directory>
         </testsuite>
     </testsuites>
 

tests/unit/Test_Basic_Requirement_Checker.php

+<?php
+
+class Test_Basic_Requirement_Checker extends PHPUnit\Framework\TestCase {
+	const RANDOM_PLUGIN_FILE = 'file';
+
+	const RANDOM_PLUGIN_NAME = 'name';
+
+	const RANDOM_PLUGIN_TEXTDOMAIN = 'text';
+
+	const ALWAYS_VALID_PHP_VERSION = '5.2';
+
+	const ALWAYS_VALID_WP_VERSION = '4.0';
+
+	public function setUp() {
+		WP_Mock::setUp();
+
+		WP_Mock::wpFunction( 'get_bloginfo' )
+		       ->andReturn( self::ALWAYS_VALID_WP_VERSION );
+	}
+
+	public function tearDown() {
+		WP_Mock::tearDown();
+	}
+
+	/**
+	 * @param string $php
+	 * @param string $wp
+	 *
+	 * @return WPDesk_Basic_Requirement_Checker
+	 */
+	public function create_requirements_for_php_wp( $php, $wp ) {
+		return new WPDesk_Basic_Requirement_Checker( self::RANDOM_PLUGIN_FILE, self::RANDOM_PLUGIN_NAME,
+			self::RANDOM_PLUGIN_TEXTDOMAIN, $php, $wp );
+	}
+
+	public function test_php_version_check() {
+		$known_PHP_versions = [ '7.3', '7.2', '7.1', '7.0', '5.6', '5.5', '5.4', '5.3', '5.2' ];
+
+		$requirements = $this->create_requirements_for_php_wp(
+			self::ALWAYS_VALID_PHP_VERSION,
+			self::ALWAYS_VALID_WP_VERSION );
+
+		foreach ( $known_PHP_versions as $version ) {
+			$requirements->set_min_php_require( $version );
+			if ( version_compare( PHP_VERSION, $version, '>=' ) ) {
+				$this->assertTrue( $requirements->are_requirements_met(),
+					'Should be ok because WP is OK and PHP is OK' );
+			} else {
+				$this->assertFalse( $requirements->are_requirements_met(),
+					'Should fail because required PHP should be at least  ' . $version );
+			}
+
+		}
+	}
+
+	public function test_wp_version_check() {
+		$wp_version_fail = '4.1';
+
+		$requirements = $this->create_requirements_for_php_wp(
+			self::ALWAYS_VALID_PHP_VERSION,
+			self::ALWAYS_VALID_WP_VERSION );
+
+		$this->assertTrue( $requirements->are_requirements_met(), 'Should be ok because WP is OK and PHP is OK' );
+		$requirements->set_min_wp_require( $wp_version_fail );
+		$this->assertFalse( $requirements->are_requirements_met(),
+			'Should fail because required WP should be at least ' . $wp_version_fail );
+	}
+
+	/**
+	 * @requires extension curl
+	 */
+	public function test_module_check() {
+		$requirements = $this->create_requirements_for_php_wp(
+			self::ALWAYS_VALID_PHP_VERSION,
+			self::ALWAYS_VALID_WP_VERSION );
+
+		$requirements->add_php_module_require( 'curl' );
+		$this->assertTrue( $requirements->are_requirements_met(), 'Curl should exists' );
+	}
+
+	public function test_plugin_check_with_multisite() {
+		$multisite                     = true;
+		$exising_plugin_name           = 'WooCommerce';
+		$exising_multisite_plugin_name = 'Multisite';
+		$not_existing_plugin_name      = 'Whatever';
+
+		WP_Mock::wpFunction( 'get_option' )
+		       ->withArgs( [ 'active_plugins', [] ] )
+		       ->andReturn( [ $exising_plugin_name ] );
+
+		WP_Mock::wpFunction( 'is_multisite' )
+		       ->andReturn( $multisite );
+
+		WP_Mock::wpFunction( 'get_site_option' )
+		       ->withArgs( [ 'active_sitewide_plugins', [] ] )
+		       ->andReturn( [ $exising_multisite_plugin_name ] );
+
+
+		$requirements = $this->create_requirements_for_php_wp( self::ALWAYS_VALID_PHP_VERSION,
+			self::ALWAYS_VALID_WP_VERSION );
+
+		$requirements->add_plugin_require( $exising_plugin_name );
+		$this->assertTrue( $requirements->are_requirements_met(), 'Plugin should exists' );
+
+		$requirements->add_plugin_require( $exising_multisite_plugin_name );
+		$this->assertTrue( $requirements->are_requirements_met(), 'Multisite plugin should exists' );
+
+		$requirements->add_plugin_require( $not_existing_plugin_name );
+		$this->assertFalse( $requirements->are_requirements_met(), 'Plugin should not exists' );
+	}
+}
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