-----Original Message-----
From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Sent: Tuesday, June 15, 2021 3:48 PM
To: Justin He <redacted>; Petr Mladek <pmladek@suse.com>
Cc: Steven Rostedt <rostedt@goodmis.org>; Sergey Senozhatsky
[off-list ref]; Andy Shevchenko
[off-list ref]; Jonathan Corbet [off-list ref];
Alexander Viro [off-list ref]; Linus Torvalds <torvalds@linux-
foundation.org>; Peter Zijlstra (Intel) [off-list ref]; Eric
Biggers [off-list ref]; Ahmed S. Darwish [off-list ref];
linux-doc@vger.kernel.org; linux-kernel@vger.kernel.org; linux-
fsdevel@vger.kernel.org
Subject: Re: [PATCH RFCv3 3/3] lib/test_printf: add test cases for '%pD'

On 15/06/2021 09.07, Justin He wrote:

quoted

Hi Petr

quoted

quoted

quoted

+static void __init
+f_d_path(void)
+{
+   test("(null)", "%pD", NULL);
+   test("(efault)", "%pD", PTR_INVALID);
+
+   is_prepend_buf = true;
+   test("/bravo/alfa   |/bravo/alfa   ", "%-14pD|%*pD", &test_file, -

14,

quoted

quoted

&test_file);

quoted

+   test("   /bravo/alfa|   /bravo/alfa", "%14pD|%*pD", &test_file, 14,

&test_file);

quoted

+   test("   /bravo/alfa|/bravo/alfa   ", "%14pD|%-14pD", &test_file,

&test_file);

Please, add more test for scenarios when the path does not fit into
the buffer or when there are no limitations, ...

Indeed, thanks

Doesn't the existing test() helper do this for you automatically?

        /*
         * Every fmt+args is subjected to four tests: Three where we
         * tell vsnprintf varying buffer sizes (plenty, not quite
         * enough and 0), and then we also test that kvasprintf would
         * be able to print it as expected.
         */

Yes, it had invoked vsnprintf for 3 times in __test()
vsnprintf(buf,256)
vsnprintf(buf,random_bytes,...)
vsnprintf(buf, 0,...);
seems no need to add more test cases

I don't see why one would need to do anything special for %pD.

Okay, got it, agree


--
Cheers,
Justin (Jia He)


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