"));
    self::assertSame("pouet", c::to_string(["pouet"]));
    self::assertSame("hello world", c::to_string(["hello", "world"]));
    self::assertSame("hello1 world", c::to_string(["hello1", "world"]));
    self::assertSame("hello", c::to_string(["hello", ""]));
    self::assertSame("world", c::to_string(["", "world"]));
    self::assertSame("hello,world", c::to_string(["hello,", "world"]));
    self::assertSame("hello world", c::to_string(["hello ", "world"]));
    self::assertSame("hello. world", c::to_string(["hello.", "world"]));
    self::assertSame("hello.", c::to_string(["hello.", ""]));
    self::assertSame(
      "title<q/>
hellobrave<q/>world
",
      c::to_string([
        [html::H1, "title"],
        [html::P, [
          "hello",
          [html::SPAN, "brave"],
          [html::SPAN, ["world"]],
        ]],
      ]));
  }
  function testXxx() {
    $content = [[v::h1, "hello"]];
    self::assertSame("hello
", c::to_string($content));
  }
}