error: `extends` block must come first in a template
 --> <source attribute>:3:2
       " extends \"bla.txt\" %}\n{% endblock %}\n"
 --> tests/ui/blocks_below_top_level.rs:4:21
  |
4 |   #[template(source = r#"
  |  _____________________^
5 | | {% block bla %}
6 | | {% extends "bla.txt" %}
7 | | {% endblock %}
8 | | "#, ext = "txt")]
  | |__^

error: `macro` blocks are not allowed below top level
 --> MyTemplate2.txt:3:3
       "macro bla() %}\n{% endmacro %}\n{% endblock %}\n"
  --> tests/ui/blocks_below_top_level.rs:12:21
   |
12 |   #[template(source = r#"
   |  _____________________^
13 | | {% block bla %}
14 | | {% macro bla() %}
15 | | {% endmacro %}
16 | | {% endblock %}
17 | | "#, ext = "txt")]
   | |__^

error: `import` blocks are not allowed below top level
 --> MyTemplate3.txt:3:3
       "import \"bla.txt\" as blue %}\n{% endblock %}\n"
  --> tests/ui/blocks_below_top_level.rs:21:21
   |
21 |   #[template(source = r#"
   |  _____________________^
22 | | {% block bla %}
23 | | {% import "bla.txt" as blue %}
24 | | {% endblock %}
25 | | "#, ext = "txt")]
   | |__^