Added plain Python sample project.

run_tests.py

@@ -260,6 +260,7 @@ def detect_tests_to_run():
     all_tests.append(('objective c', gather_tests('test cases/objc'), False if not mesonlib.is_windows() else True))
     all_tests.append(('fortran', gather_tests('test cases/fortran'), False if shutil.which('gfortran') else True))
     all_tests.append(('swift', gather_tests('test cases/swift'), False if shutil.which('swiftc') else True))
+    all_tests.append(('python3', gather_tests('test cases/python3'), False if shutil.which('python3') else True))
     return all_tests
 
 def run_tests(extra_args):

test cases/python3/1 basic/gluon/gluonator.py

@@ -0,0 +1,2 @@
+def gluoninate():
+    return 42

test cases/python3/1 basic/meson.build

@@ -0,0 +1,9 @@
+project('python sample', 'c')
+
+py3 = find_program('python3')
+
+main = files('prog.py')
+
+test('toplevel', py3, args : main)
+
+subdir('subdir')

test cases/python3/1 basic/prog.py

@@ -0,0 +1,9 @@
+#!/usr/bin/env python3
+
+from gluon import gluonator
+import sys
+
+print('Running mainprog from root dir.')
+
+if gluonator.gluoninate() != 42:
+    sys.exit(1)

test cases/python3/1 basic/subdir/meson.build

@@ -0,0 +1,5 @@
+submain = find_program('subprog.py')
+
+test('subdir',
+  submain,
+  env : 'PYTHONPATH=' + meson.source_root())

test cases/python3/1 basic/subdir/subprog.py

@@ -0,0 +1,12 @@
+#!/usr/bin/env python3
+
+# In order to run this program, PYTHONPATH must be set to
+# point to source root.
+
+from gluon import gluonator
+import sys
+
+print('Running mainprog from subdir.')
+
+if gluonator.gluoninate() != 42:
+    sys.exit(1)