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use grade_school as school;
fn some_strings(v: &[&str]) -> Option<Vec<String>> {
Some(v.iter().map(|s| s.to_string()).collect())
}
#[test]
fn test_grades_for_empty_school() {
let s = school::School::new();
assert_eq!(s.grades(), vec![]);
}
#[test]
fn test_grades_for_one_student() {
let mut s = school::School::new();
s.add(2, "Aimee");
assert_eq!(s.grades(), vec![2]);
}
#[test]
fn test_grades_for_several_students_are_sorted() {
let mut s = school::School::new();
s.add(2, "Aimee");
s.add(7, "Logan");
s.add(4, "Blair");
assert_eq!(s.grades(), vec![2, 4, 7]);
}
#[test]
fn test_grades_when_several_students_have_the_same_grade() {
let mut s = school::School::new();
s.add(2, "Aimee");
s.add(2, "Logan");
s.add(2, "Blair");
assert_eq!(s.grades(), vec![2]);
}
#[test]
fn test_grade_for_empty_school() {
let s = school::School::new();
assert_eq!(s.grade(1), None);
}
#[test]
fn test_grade_when_no_students_have_that_grade() {
let mut s = school::School::new();
s.add(7, "Logan");
assert_eq!(s.grade(1), None);
}
#[test]
fn test_grade_for_one_student() {
let mut s = school::School::new();
s.add(2, "Aimee");
assert_eq!(s.grade(2), some_strings(&["Aimee"]));
}
#[test]
fn test_grade_returns_students_sorted_by_name() {
let mut s = school::School::new();
s.add(2, "James");
s.add(2, "Blair");
s.add(2, "Paul");
assert_eq!(s.grade(2), some_strings(&["Blair", "James", "Paul"]));
}
#[test]
fn test_add_students_to_different_grades() {
let mut s = school::School::new();
s.add(3, "Chelsea");
s.add(7, "Logan");
assert_eq!(s.grades(), vec![3, 7]);
assert_eq!(s.grade(3), some_strings(&["Chelsea"]));
assert_eq!(s.grade(7), some_strings(&["Logan"]));
}
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