test_template.tera

use std::collections::HashMap;

fn check_word_count(mut output: HashMap<String, u32>, pairs: &[(&str, u32)]) {
    // The reason for the awkward code in here is to ensure that the failure
    // message for assert_eq! is as informative as possible. A simpler
    // solution would simply check the length of the map, and then
    // check for the presence and value of each key in the given pairs vector.
    for &(k, v) in pairs.iter() {
        assert_eq!((k, output.remove(&k.to_string()).unwrap_or(0)), (k, v));
    }
    // may fail with a message that clearly shows all extra pairs in the map
    assert_eq!(output.iter().collect::<Vec<(&String, &u32)>>(), vec![]);
}
{% for test in cases %}
#[test]
{% if loop.index != 1 -%}
#[ignore]
{% endif -%}
fn {{ test.description | slugify | replace(from="-", to="_") }}() {
    let input = {{ test.input.sentence | json_encode() }};
    let output = {{ crate_name }}::{{ fn_names[0] }}(input);
    let expected = &[{% for key, value in test.expected -%}
        ({{ key | json_encode() }}, {{ value }}),
    {%- endfor %}];
    check_word_count(output, expected);
}
{% endfor -%}