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backend/wordpress/wp-content/plugins/jetpack/class.jetpack-constants.php

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+<?php
+
+/**
+ * Class Jetpack_Constants
+ *
+ * Testing constants is hard. Once you define a constant, it's defined. Jetpack_Constants is an
+ * abstraction layer so that unit tests can set "constants" for tests.
+ *
+ * To test your code, you'll need to swap out `defined( 'CONSTANT' )` with `Jetpack_Constants::is_defined( 'CONSTANT' )`
+ * and replace `CONSTANT` with `Jetpack_Constants::get_constant( 'CONSTANT' )`. Then in the unit test, you can set the
+ * constant with `Jetpack::set_constant( 'CONSTANT', $value )` and then clean up after each test with something like
+ * this:
+ *
+ * function tearDown() {
+ *     Jetpack_Constants::clear_constants();
+ * }
+ */
+class Jetpack_Constants {
+	static $set_constants = array();
+
+	/**
+	 * Checks if a "constant" has been set in Jetpack_Constants, and if not,
+	 * checks if the constant was defined with define( 'name', 'value ).
+	 *
+	 * @param $name string The name of the constant
+	 *
+	 * @return bool
+	 */
+	public static function is_defined( $name ) {
+		return array_key_exists( $name, self::$set_constants )
+			? true
+			: defined( $name );
+	}
+	/**
+	 * Checks if a "constant" has been set in Jetpack_Constants
+	 * and has the value of true
+	 *
+	 * @param $name string The name of the constant
+	 *
+	 * @return bool
+	 */
+	public static function is_true( $name ) {
+		return self::is_defined( $name) && self::get_constant( $name );
+	}
+
+	/**
+	 * Attempts to retrieve the "constant" from Jetpack_Constants, and if it hasn't been set,
+	 * then attempts to get the constant with the constant() function.
+	 *
+	 * @param $name
+	 *
+	 * @return mixed null if the constant does not exist or the value of the constant.
+	 */
+	public static function get_constant( $name ) {
+		if ( array_key_exists( $name,  self::$set_constants ) ) {
+			return self::$set_constants[ $name ];
+		}
+
+		return defined( $name ) ? constant( $name ) : null;
+	}
+
+	/**
+	 * Sets the value of the "constant" within Jetpack_Constants.
+	 *
+	 * @param $name  string The name of the "constant"
+	 * @param $value string The value of the "constant"
+	 */
+	public static function set_constant( $name, $value ) {
+		self::$set_constants[ $name ] = $value;
+	}
+
+	/**
+	 * Will unset a "constant" from Jetpack_Constants if the constant exists.
+	 *
+	 * @param $name string The name of the "constant"
+	 *
+	 * @return bool Whether the constant was removed.
+	 */
+	public static function clear_single_constant( $name ) {
+		if ( ! array_key_exists( $name, self::$set_constants ) ) {
+			return false;
+		}
+
+		unset( self::$set_constants[ $name ] );
+		return true;
+	}
+
+	/**
+	 * Resets all of the constants within Jetpack_Constants.
+	 */
+	public static function clear_constants() {
+		self::$set_constants = array();
+	}
+}