Mbed-os: OS2 tests scripts doesn't work any more

[jeromecoutant]

Description

Since #7183, OS2 tests can't be executed

@theotherjimmy @cmonr

````
python tools/singletest.py -M muts_test.json -i muts_compilation.json -V -j 4

Traceback (most recent call last):
File "tools/singletest.py", line 262, in
if (singletest_in_cli_mode(single_test)):
File "C:\github\mbed\tools\test_api.py", line 1551, in singletest_in_cli_mode
test_summary, shuffle_seed, test_summary_ext, test_suite_properties_ext, build_report, build_properties = single_test.execute()
File "C:\github\mbed\tools\test_api.py", line 655, in execute
self.execute_thread_slice(q, target, toolchains, clean, test_ids, self.build_report, self.build_properties)
File "C:\github\mbed\tools\test_api.py", line 584, in execute_thread_slice
handle_results = self.handle(test_spec, target, toolchain, test_loops=test_loops)
File "C:\github\mbed\tools\test_api.py", line 1029, in handle
handle_result = self.handle_mut(mut, data, target_name, toolchain_name, test_loops=test_loops)
File "C:\github\mbed\tools\test_api.py", line 944, in handle_mut
if not exists(image_path):
File "C:\Python27\lib\genericpath.py", line 26, in exists
os.stat(path)
TypeError: coercing to Unicode: need string or buffer, list found
````

Issue request type

[ ] Question
[ ] Enhancement
[x] Bug

[jeromecoutant]

Hi
I am available to test some patch :-)

[Mirrored to Jira]

[cmonr]

Thanks @jeromecoutant!

Would you happen to have tests for a specific target that we could test against so that we can reproduce the issues?
[Mirrored to Jira]

[jeromecoutant]

No, issue is not related to a specific target, you can try "python tools/singletest.py ..." to the target you have
[Mirrored to Jira]

[jeromecoutant]

Note that OS2 tests was OK with last rev 163 lib as #7183 has not been included in 5.9 branch.
Next mbed_lib can't be released before solving this issue.

[Mirrored to Jira]

[0xc0170]

Thanks @jeromecoutant ,we will review this issue

@ARMmbed/mbed-os-tools
[Mirrored to Jira]

[adbridge]

Internal Jira reference: https://jira.arm.com/browse/IOTCORE-395

[jeromecoutant]

Is OS2 support stopped for 5.10 release ?

[0xc0170]

Is OS2 support stopped for 5.10 release ?

No. We should fix this

[jeromecoutant]

Hi

I could see that mbed_lib_rev164 has been released
Whereas no test is possible....?

[screamerbg]

@cmonr @jeromecoutant @bridadan Any update on this?

[bridadan]

Fix up: https://github.com/ARMmbed/mbed-os/pull/9107