Run failure with VS2017 backend

The traceback is not very helpful, but the issue might be related to the path definitions. No issue using the ninja backend or without -Dtestdata_tests=true.

Build operation and output:

C:\Users\rzumer\Projects\dav1d-test>meson build --backend=vs2017 -Dbuild_tests=true -Dtestdata_tests=true
The Meson build system
Version: 0.48.2
Source dir: C:\Users\rzumer\Projects\dav1d-test
Build dir: C:\Users\rzumer\Projects\dav1d-test\build
Build type: native build
Project name: dav1d
Project version: 0.0.1
Native C compiler: cl (msvc 19.15.26730)
Build machine cpu family: x86_64
Build machine cpu: x86_64
Check usable header "stdatomic.h": NO
Check usable header "unistd.h": NO
Checking for function "getopt_long" : NO
Checking for function "posix_memalign" : NO
Checking for function "_aligned_malloc" : YES
Compiler for C supports arguments -fvisibility=hidden: NO
meson.build:157: WARNING: Compiler does not support -fvisibility=hidden, all symbols will be public!
Compiler for C supports arguments -Wundef: NO
Compiler for C supports arguments -Werror=vla: NO
Compiler for C supports arguments -Wno-maybe-uninitialized -Wmaybe-uninitialized: NO
Compiler for C supports arguments -Wno-unused-parameter -Wunused-parameter: NO
Compiler for C supports arguments -Werror=missing-prototypes: NO
Compiler for C supports arguments -fomit-frame-pointer: NO
Compiler for C supports arguments -ffast-math: NO
Compiler for C supports arguments -mpreferred-stack-boundary=5: NO
Compiler for C supports arguments -mpreferred-stack-boundary=4: NO
Compiler for C supports arguments -mstack-alignment=32: NO
Configuring config.h using configuration
Configuring config.asm using configuration
Program nasm found: YES (C:\Binaries\nasm.EXE)
Configuring dav1d.rc using configuration
Library m found: NO
Build targets in project: 12

meson test output:

Traceback (most recent call last):
  File "C:\Program Files (x86)\Python37-32\Scripts\meson-script.py", line 11, in <module>
    load_entry_point('meson==0.48.0', 'console_scripts', 'meson')()
  File "c:\program files (x86)\python37-32\lib\site-packages\mesonbuild\mesonmain.py", line 392, in main
    return run(sys.argv[1:], launcher)
  File "c:\program files (x86)\python37-32\lib\site-packages\mesonbuild\mesonmain.py", line 302, in run
    return mtest.run(remaining_args)
  File "c:\program files (x86)\python37-32\lib\site-packages\mesonbuild\mtest.py", line 778, in run
    return th.doit()
  File "c:\program files (x86)\python37-32\lib\site-packages\mesonbuild\mtest.py", line 526, in doit
    self.run_tests(tests)
  File "c:\program files (x86)\python37-32\lib\site-packages\mesonbuild\mtest.py", line 672, in run_tests
    res = single_test.run()
  File "c:\program files (x86)\python37-32\lib\site-packages\mesonbuild\mtest.py", line 266, in run
    return self._run_cmd(wrap + cmd + self.test.cmd_args + self.options.test_args)
  File "c:\program files (x86)\python37-32\lib\site-packages\mesonbuild\mtest.py", line 319, in _run_cmd
    preexec_fn=preexec_fn if not is_windows() else None)
  File "c:\program files (x86)\python37-32\lib\subprocess.py", line 756, in __init__
    restore_signals, start_new_session)
  File "c:\program files (x86)\python37-32\lib\subprocess.py", line 1155, in _execute_child
    startupinfo)
FileNotFoundError: [WinError 2] The system cannot find the file specified