meson: Use 'tap' test protocol by default

Meson supports tap protocol results parsing, allowing us to track better
the tests that are running (and the ones that are actually skipped) without
manually parsing the test output.

However this also implies that using the verbose mode for a test doesn't
show its output by default (unless there are failures).

gio/tests/meson.build

@@ -1035,6 +1035,7 @@ foreach test_name, extra_args : gio_tests
   endif
 
   test(test_name, exe,
+    protocol : extra_args.get('protocol', test_protocol),
     env : local_test_env,
     timeout : timeout,
     suite : suite,
@@ -1059,6 +1060,7 @@ foreach test_name, extra_args : python_tests
   test(
     test_name,
     python,
+    protocol : extra_args.get('protocol', test_protocol),
     depends: depends,
     args: ['-B', files(test_name)],
     env: test_env,

glib/tests/meson.build

@@ -398,6 +398,7 @@ foreach test_name, extra_args : glib_tests
   endforeach
 
   test(test_name, exe,
+    protocol : extra_args.get('protocol', test_protocol),
     depends : depends,
     env : test_env,
     timeout : timeout,
@@ -444,6 +445,7 @@ foreach test_name, extra_args : python_tests
   test(
     test_name,
     python,
+    protocol : extra_args.get('protocol', test_protocol),
     depends: depends,
     args: ['-B', files(test_name)],
     env: test_env,

gmodule/tests/meson.build

@@ -115,6 +115,7 @@ foreach test_name, extra_args : gmodule_tests
 
   test(test_name,
     exe,
+    protocol : extra_args.get('protocol', test_protocol),
     depends : depends,
     env : test_env,
     timeout : timeout,

gobject/tests/meson.build

@@ -186,7 +186,13 @@ foreach test_name, extra_args : gobject_tests
     timeout = timeout * 10
   endif
 
-  test(test_name, exe, env : test_env, timeout : timeout, suite : suite)
+  test(test_name,
+    exe,
+    protocol : extra_args.get('protocol', test_protocol),
+    env : test_env,
+    timeout : timeout,
+    suite : suite,
+  )
 endforeach
 
 foreach test_name, extra_args : python_tests
@@ -200,6 +206,7 @@ foreach test_name, extra_args : python_tests
   test(
     test_name,
     python,
+    protocol : extra_args.get('protocol', test_protocol),
     depends: depends,
     args: ['-B', files(test_name)],
     env: test_env,

gthread/tests/meson.build

@@ -44,5 +44,11 @@ foreach test_name, extra_args : gthread_tests
     suite += 'failing'
   endif
 
-  test(test_name, exe, env : test_env, timeout : timeout, suite : suite)
+  test(test_name,
+    exe,
+    protocol : extra_args.get('protocol', test_protocol),
+    env : test_env,
+    timeout : timeout,
+    suite : suite,
+  )
 endforeach

meson.build

@@ -151,6 +151,10 @@ common_test_env = [
   'MALLOC_CHECK_=2',
 ]
 
+# Note: this may cause the tests output not to be printed when running in
+# verbose mode, see https://github.com/mesonbuild/meson/issues/11185
+# Can be changed it to 'exitcode' if required during development.
+test_protocol = 'tap'
 test_timeout = 30
 test_timeout_slow = 90