exercism/rust/sublist/tests/sublist.rs

use sublist::*;

#[test]
fn empty_lists() {
    let list_one: &[i32] = &[];
    let list_two: &[i32] = &[];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Equal;
    assert_eq!(output, expected);
}

#[test]
fn empty_list_within_non_empty_list() {
    let list_one: &[i32] = &[];
    let list_two: &[i32] = &[1, 2, 3];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Sublist;
    assert_eq!(output, expected);
}

#[test]
fn non_empty_list_contains_empty_list() {
    let list_one: &[i32] = &[1, 2, 3];
    let list_two: &[i32] = &[];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Superlist;
    assert_eq!(output, expected);
}

#[test]
fn list_equals_itself() {
    let list_one: &[i32] = &[1, 2, 3];
    let list_two: &[i32] = &[1, 2, 3];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Equal;
    assert_eq!(output, expected);
}

#[test]
fn different_lists() {
    let list_one: &[i32] = &[1, 2, 3];
    let list_two: &[i32] = &[2, 3, 4];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Unequal;
    assert_eq!(output, expected);
}

#[test]
fn false_start() {
    let list_one: &[i32] = &[1, 2, 5];
    let list_two: &[i32] = &[0, 1, 2, 3, 1, 2, 5, 6];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Sublist;
    assert_eq!(output, expected);
}

#[test]
fn consecutive() {
    let list_one: &[i32] = &[1, 1, 2];
    let list_two: &[i32] = &[0, 1, 1, 1, 2, 1, 2];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Sublist;
    assert_eq!(output, expected);
}

#[test]
fn sublist_at_start() {
    let list_one: &[i32] = &[0, 1, 2];
    let list_two: &[i32] = &[0, 1, 2, 3, 4, 5];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Sublist;
    assert_eq!(output, expected);
}

#[test]
fn sublist_in_middle() {
    let list_one: &[i32] = &[2, 3, 4];
    let list_two: &[i32] = &[0, 1, 2, 3, 4, 5];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Sublist;
    assert_eq!(output, expected);
}

#[test]
fn sublist_at_end() {
    let list_one: &[i32] = &[3, 4, 5];
    let list_two: &[i32] = &[0, 1, 2, 3, 4, 5];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Sublist;
    assert_eq!(output, expected);
}

#[test]
fn at_start_of_superlist() {
    let list_one: &[i32] = &[0, 1, 2, 3, 4, 5];
    let list_two: &[i32] = &[0, 1, 2];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Superlist;
    assert_eq!(output, expected);
}

#[test]
fn in_middle_of_superlist() {
    let list_one: &[i32] = &[0, 1, 2, 3, 4, 5];
    let list_two: &[i32] = &[2, 3];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Superlist;
    assert_eq!(output, expected);
}

#[test]
fn at_end_of_superlist() {
    let list_one: &[i32] = &[0, 1, 2, 3, 4, 5];
    let list_two: &[i32] = &[3, 4, 5];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Superlist;
    assert_eq!(output, expected);
}

#[test]
fn first_list_missing_element_from_second_list() {
    let list_one: &[i32] = &[1, 3];
    let list_two: &[i32] = &[1, 2, 3];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Unequal;
    assert_eq!(output, expected);
}

#[test]
fn second_list_missing_element_from_first_list() {
    let list_one: &[i32] = &[1, 2, 3];
    let list_two: &[i32] = &[1, 3];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Unequal;
    assert_eq!(output, expected);
}

#[test]
fn first_list_missing_additional_digits_from_second_list() {
    let list_one: &[i32] = &[1, 2];
    let list_two: &[i32] = &[1, 22];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Unequal;
    assert_eq!(output, expected);
}

#[test]
fn order_matters_to_a_list() {
    let list_one: &[i32] = &[1, 2, 3];
    let list_two: &[i32] = &[3, 2, 1];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Unequal;
    assert_eq!(output, expected);
}

#[test]
fn same_digits_but_different_numbers() {
    let list_one: &[i32] = &[1, 0, 1];
    let list_two: &[i32] = &[10, 1];
    let output = sublist(list_one, list_two);
    let expected = Comparison::Unequal;
    assert_eq!(output, expected);
}