Tests: Use assertSame() in some newly introduced tests.

This ensures that not only the return values match the expected results, but also that their type is the same.

Going forward, stricter type checking by using `assertSame()` should generally be preferred to `assertEquals()` where appropriate, to make the tests more reliable.

Follow-up to [60490], [60524].

See #64324.

git-svn-id: https://develop.svn.wordpress.org/trunk@61413 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

tests/phpunit/tests/feed/fetchFeed.php

@@ -51,10 +51,10 @@ public function test_fetch_feed_cached() {
 		add_filter( 'pre_http_request', array( $filter, 'filter' ) );
 
 		fetch_feed( 'https://wordpress.org/news/feed/' );
-		$this->assertEquals( 1, $filter->get_call_count(), 'The feed should be fetched on the first call.' );
+		$this->assertSame( 1, $filter->get_call_count(), 'The feed should be fetched on the first call.' );
 
 		fetch_feed( 'https://wordpress.org/news/feed/' );
-		$this->assertEquals( 1, $filter->get_call_count(), 'The feed should be cached on the second call. For SP 1.8.x upgrades, backport simplepie/simplepie#830 to resolve.' );
+		$this->assertSame( 1, $filter->get_call_count(), 'The feed should be cached on the second call. For SP 1.8.x upgrades, backport simplepie/simplepie#830 to resolve.' );
 	}
 
 	/**
@@ -79,7 +79,7 @@ public function test_fetch_feed_uses_global_cache() {
 		switch_to_blog( $second_blog_id );
 
 		fetch_feed( 'https://wordpress.org/news/feed/' );
-		$this->assertEquals( 1, $filter->get_call_count(), 'The feed cache should be global.' );
+		$this->assertSame( 1, $filter->get_call_count(), 'The feed cache should be global.' );
 	}
 
 	/**