Add some test scenarios & make them actually pass ;)

Author: jblz

features/post-generate.feature

@@ -60,3 +60,55 @@ Feature: Generate new WordPress posts
       howdy-3
       """
     And STDERR should be empty
+
+  Scenario: Generating posts with post_date argument without time
+    When I run `wp post generate --count=1 --post_date="2018-07-01"`
+    And I run `wp post list --field=post_date`
+    Then STDOUT should contain:
+      """
+      2018-07-01 00:00:00
+      """
+    And I run `wp post list --field=post_date_gmt`
+    Then STDOUT should contain:
+      """
+      2018-07-01 00:00:00
+      """
+
+  Scenario: Generating posts with post_date argument with time
+    When I run `wp post generate --count=1 --post_date="2018-07-02 00:00:00"`
+    And I run `wp post list --field=post_date`
+    Then STDOUT should contain:
+      """
+      2018-07-02 00:00:00
+      """
+    And I run `wp post list --field=post_date_gmt`
+    Then STDOUT should contain:
+      """
+      2018-07-02 00:00:00
+      """
+
+  Scenario: Generating posts with post_date_gmt argument without time
+    When I run `wp post generate --count=1 --post_date_gmt="2018-07-03"`
+    And I run `wp post list --field=post_date`
+    Then STDOUT should contain:
+      """
+      2018-07-03 00:00:00
+      """
+    And I run `wp post list --field=post_date_gmt`
+    Then STDOUT should contain:
+      """
+      2018-07-03 00:00:00
+      """
+
+  Scenario: Generating posts with post_date_gmt argument with time
+    When I run `wp post generate --count=1 --post_date_gmt="2018-07-04 00:00:00"`
+    And I run `wp post list --field=post_date`
+    Then STDOUT should contain:
+      """
+      2018-07-04 00:00:00
+      """
+    And I run `wp post list --field=post_date_gmt`
+    Then STDOUT should contain:
+      """
+      2018-07-04 00:00:00
+      """

src/Post_Command.php

@@ -683,15 +683,21 @@ public function generate( $args, $assoc_args ) {
 			'post_type' => 'post',
 			'post_status' => 'publish',
 			'post_author' => false,
-			'post_date' => current_time( 'mysql' ),
+			'post_date' => false,
 			'post_date_gmt' => false,
 			'post_content' => '',
 			'post_title' => '',
 		);
 		extract( array_merge( $defaults, $assoc_args ), EXTR_SKIP );
 
+		$call_time = current_time( 'mysql' );
+
 		if ( $post_date_gmt === false ) {
-			$post_date_gmt = $post_date;
+			$post_date_gmt = $post_date ? $post_date : $call_time;
+		}
+
+		if ( $post_date === false ) {
+			$post_date = $post_date_gmt ? $post_date_gmt : $call_time;
 		}
 
 		// @codingStandardsIgnoreStart