run_project_tests: Clean on backends that can't install

Also sets more groundwork for running unit tests with backends other
that Ninja.

Transferring global state to executors is totally broken in Python 3.4
so just serialize all the commands.

1 files changed, 11 insertions, 1 deletions

diff --git a/run_tests.py b/run_tests.py
index f86c8903e..ebccaa6ac 100755
--- a/run_tests.py
+++ b/run_tests.py
@@ -22,6 +22,7 @@ import platform
 from mesonbuild import mesonlib
 from mesonbuild.environment import detect_ninja
 from enum import Enum
+from glob import glob
 
 Backend = Enum('Backend', 'ninja vs xcode')
 
@@ -30,6 +31,15 @@ if mesonlib.is_windows():
 else:
     exe_suffix = ''
 
+def get_backend_args_for_dir(backend, builddir):
+    '''
+    Visual Studio backend needs to be given the solution to build
+    '''
+    if backend.startswith('vs'):
+        sln_name = glob(os.path.join(builddir, '*.sln'))[0]
+        return [os.path.split(sln_name)[-1]]
+    return []
+
 def get_build_target_args(backend, target):
     if target is None:
         return []
@@ -44,7 +54,7 @@ def get_backend_commands(backend, debug=False):
     uninstall_cmd = []
     if backend.startswith('vs'):
         cmd = ['msbuild']
-        clean_cmd = []
+        clean_cmd = cmd + ['/target:Clean']
         test_cmd = cmd + ['RUN_TESTS.vcxproj']
     elif backend == 'xcode':
         cmd = ['xcodebuild']