Testing Samples

This example shows how to register a minimal unit test with GLib.Test, run it, and exit with a useful status code. It adapts the “Simple test” section from the archived Vala TestSample page on the GNOME Wiki.

Program

Save the following as test-simple.vala:

void add_foo_tests () {
    Test.add_func ("/vala/test", () => {
        assert ("foo" + "bar" == "foobar");
    });
}

void main (string[] args) {
    Test.init (ref args);
    add_foo_tests ();
    Test.run ();
}

Test.add_func registers a test case under a path string (here /vala/test). The closure runs inside the GLib test harness; failed assertions are reported as test failures.

Compile and run

valac test-simple.vala
./test-simple

On success, the process prints TAP-style output and exits with status 0.

Meson

To run this test via meson test, add a small meson.build:

project('simple-test', 'vala', version: '0.1.0')

sources = files('test-simple.vala')

deps = [dependency('glib-2.0'), dependency('gobject-2.0')]

exe = executable('unit-test', sources, dependencies: deps)
test('unit-test', exe)

Then:

meson setup build
meson compile -C build
meson test -C build