src/sys/test_runners/elf/default.shard.cml

{
    program: {
        runner: "elf_test_runner",
    },
    capabilities: [
        { protocol: "fuchsia.test.Suite" },
    ],
    expose: [
        {
            protocol: "fuchsia.test.Suite",
            from: "self",
        },
    ],
}