Add test-cases that include sysprof headers into C++ code

Reproduces: https://gitlab.gnome.org/GNOME/sysprof/-/issues/114
Signed-off-by: Simon McVittie <smcv@debian.org>

src/libsysprof-capture/tests/meson.build

@@ -21,6 +21,7 @@ libsysprof_capture_testsuite = {
   'rewrite-pid'             : {'skip': true},
   'test-capture'            : {},
   'test-capture-cursor'     : {},
+  'test-cplusplus'          : {'cpp': true},
   'test-mapped-ring-buffer' : {},
 }
 
@@ -30,10 +31,18 @@ libsysprof_capture_testsuite_deps = [
 ]
 
 foreach test, params: libsysprof_capture_testsuite
+  if params.get('cpp', false)
+    test_exe = executable(test, '@0@.cpp'.format(test),
+          cpp_args: libsysprof_capture_testsuite_c_args,
+      dependencies: libsysprof_capture_testsuite_deps,
+    )
+  else
     test_exe = executable(test, '@0@.c'.format(test),
             c_args: libsysprof_capture_testsuite_c_args,
       dependencies: libsysprof_capture_testsuite_deps,
     )
+  endif
+
   if not params.get('skip', false)
     test(test, test_exe, env: libsysprof_capture_test_env)
   endif

src/libsysprof-capture/tests/test-cplusplus.cpp

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2024 Simon McVittie
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include <sysprof-capture.h>
+
+#undef _NDEBUG
+#include <assert.h>
+
+#ifdef __GNUC__
+#define UNUSED __attribute__((__unused__))
+#else
+#define UNUSED
+#endif
+
+int
+main (UNUSED int   argc,
+      UNUSED char *argv[])
+{
+  assert (sysprof_getpagesize () > 0);
+  return 0;
+}
+

src/libsysprof/tests/meson.build

@@ -16,6 +16,7 @@ libsysprof_testsuite = {
   'test-allocs-by-func'           : {'skip': true},
   'test-callgraph'                : {'skip': true},
   'test-capture-model'            : {'skip': true},
+  'test-cplusplus'                : {'cpp': true},
   'test-elf-loader'               : {'skip': true},
   'test-leak-detector'            : {'skip': true},
   'test-list-counters'            : {'skip': true},
@@ -41,10 +42,18 @@ libsysprof_testsuite_deps = [
 ]
 
 foreach test, params: libsysprof_testsuite
+  if params.get('cpp', false)
+    test_exe = executable(test, '@0@.cpp'.format(test),
+          cpp_args: libsysprof_testsuite_c_args,
+      dependencies: libsysprof_testsuite_deps,
+    )
+  else
     test_exe = executable(test, '@0@.c'.format(test),
             c_args: libsysprof_testsuite_c_args,
       dependencies: libsysprof_testsuite_deps,
     )
+  endif
+
   if not params.get('skip', false)
     test(test, test_exe, env: libsysprof_test_env)
   endif

src/libsysprof/tests/test-cplusplus.cpp

@@ -0,0 +1,17 @@
+/*
+ * Copyright 2024 Simon McVittie
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+#include <sysprof.h>
+
+#undef _NDEBUG
+#include <assert.h>
+
+int
+main (G_GNUC_UNUSED int   argc,
+      G_GNUC_UNUSED char *argv[])
+{
+  assert (sysprof_callgraph_flags_get_type () != 0);
+  return 0;
+}