Fix *list tests to respect underlying functions

tests/tests/class-plugin-functions.php

@@ -16,16 +16,30 @@ class SampleTest extends WP_UnitTestCase {
 	/**
 	 * Test whitelisted commands
 	 */
-	function test_whitelist() {
-		$this->assertTrue( WP_CLI_Cron_Control_Offload\is_command_allowed( 'wp post list' ) );
-		$this->assertTrue( WP_CLI_Cron_Control_Offload\is_command_allowed( 'post list' ) );
+	function test_whitelist_using_is_command_allowed() {
+		$this->assertTrue( WP_CLI_Cron_Control_Offload\is_command_allowed( 'post' ) );
 	}
 
 	/**
 	 * Test blacklisted commands
 	 */
-	function test_blacklist() {
-		$this->assertFalse( WP_CLI_Cron_Control_Offload\is_command_allowed( 'wp cli info' ) );
-		$this->assertFalse( WP_CLI_Cron_Control_Offload\is_command_allowed( 'cli info' ) );
+	function test_blacklist_using_is_command_allowed() {
+		$this->assertFalse( WP_CLI_Cron_Control_Offload\is_command_allowed( 'cli' ) );
+	}
+
+	/**
+	 * Test whitelisted command validation
+	 */
+	function test_whitelist_using_validate_command() {
+		$this->assertTrue( is_string( WP_CLI_Cron_Control_Offload\validate_command( 'wp post list' ) ) );
+		$this->assertTrue( is_string( WP_CLI_Cron_Control_Offload\validate_command( 'post list' ) ) );
+	}
+
+	/**
+	 * Test blacklisted command validation
+	 */
+	function test_blacklist_using_validate_command() {
+		$this->assertTrue( is_wp_error( WP_CLI_Cron_Control_Offload\validate_command( 'wp cli info' ) ) );
+		$this->assertTrue( is_wp_error( WP_CLI_Cron_Control_Offload\validate_command( 'cli info' ) ) );
 	}
 }