[v4,4/6] Tests for gdb.InferiorThread.handle

  gdb/testsuite/ChangeLog:

	* gdb.python/py-thrhandle.exp: Add tests for
	gdb.InferiorThread.handle.
---
 gdb/testsuite/gdb.python/py-thrhandle.exp | 42 +++++++++++++++++++++--
 1 file changed, 39 insertions(+), 3 deletions(-)
  

On Thursday, April 04 2019, Kevin Buettner wrote:

> gdb/testsuite/ChangeLog:
>
> 	* gdb.python/py-thrhandle.exp: Add tests for
> 	gdb.InferiorThread.handle.

Hey Kevin,

I've just noticed that this patch series has introduced new FAILs when
testing a 64-bit GDB with --target_board unix/-m32:

new FAIL: gdb.python/py-thrhandle.exp: thread 0: fetch thread handle from thread
new FAIL: gdb.python/py-thrhandle.exp: thread 0: verify that handles are the same
new FAIL: gdb.python/py-thrhandle.exp: thread 1: fetch thread handle from thread
new FAIL: gdb.python/py-thrhandle.exp: thread 1: verify that handles are the same
new FAIL: gdb.python/py-thrhandle.exp: thread 2: fetch thread handle from thread
new FAIL: gdb.python/py-thrhandle.exp: thread 2: verify that handles are the same

The build logs:

https://gdb-build.sergiodj.net/builders/Fedora-x86_64-m32/builds/12263

And the testsuite logs:

https://gdb-build.sergiodj.net/results/Fedora-x86_64-m32/94/947210e5690c61b395ccd887bc58bcb45ccd357b/

I haven't been able to investigate further, sorry.

Thanks,

> ---
>  gdb/testsuite/gdb.python/py-thrhandle.exp | 42 +++++++++++++++++++++--
>  1 file changed, 39 insertions(+), 3 deletions(-)
>
> diff --git a/gdb/testsuite/gdb.python/py-thrhandle.exp b/gdb/testsuite/gdb.python/py-thrhandle.exp
> index 2c905b444f..57b97faa18 100644
> --- a/gdb/testsuite/gdb.python/py-thrhandle.exp
> +++ b/gdb/testsuite/gdb.python/py-thrhandle.exp
> @@ -16,11 +16,12 @@
>  # Please email any bugs, comments, and/or additions to this file to:
>  # bug-gdb@gnu.org
>  
> -# This file verifies that gdb.Inferior.thread_from_thread_handle works
> -# as expected.
> +# This file verifies that methods Inferior.thread_from_thread_handle
> +# and InferiorThread.handle work as expected.
>  
> -standard_testfile
> +load_lib gdb-python.exp
>  
> +standard_testfile
>  
>  if {[gdb_compile_pthreads "${srcdir}/${subdir}/${srcfile}" "${binfile}" executable debug] != "" } {
>      return -1
> @@ -104,3 +105,38 @@ gdb_test "python print(gdb.selected_inferior().thread_from_thread_handle(gdb.par
>  gdb_test "python print(gdb.selected_inferior().thread_from_thread_handle(gdb.parse_and_eval('\"S\"')))" \
>           ".*Thread handle size mismatch.*" \
>  	 "Pass too small of an object to thread_from_thread_handle"
> +
> +# Test the thread_handle method
> +
> +gdb_py_test_silent_cmd "python tp=gdb.lookup_type('pthread_t')" \
> +		       "Get pthread_t type" 0
> +gdb_py_test_silent_cmd "python inf=gdb.selected_inferior()" "Get inferior" 0
> +
> +foreach thrN {0 1 2} {
> +    with_test_prefix "thread $thrN" {
> +
> +	gdb_py_test_silent_cmd \
> +	    "python hand = gdb.parse_and_eval('thrs\[$thrN\]')" \
> +	    "fetch thread handle from inferior" \
> +	    1
> +
> +	gdb_py_test_silent_cmd \
> +	    "python hand_bytes = inf.thread_from_thread_handle(hand).handle()" \
> +	    "fetch thread handle from thread" \
> +	    1
> +
> +
> +	# It'd be nice to be able to use this comparison expression:
> +	#
> +	#    hand == hand_bytes
> +	#
> +	# But this won't work because hand is a gdb.Value and hand_bytes
> +	# is a Python bytes object.  Therefore, we convert the bytes
> +	# object into a gdb.value by calling the two argument form of
> +	# its constructor.
> +
> +        gdb_test "python print(gdb.Value(hand_bytes, tp) == hand)" \
> +	         "True" \
> +	         "verify that handles are the same"
> +    }
> +}
> -- 
> 2.20.1