Add "dev update"

tests/dev_cargo_bins.rs

@@ -1,44 +0,0 @@
-// Makes sure that `dev/Cargo.toml` is synced with `info.toml`.
-// When this test fails, you just need to run `cargo run -p gen-dev-cargo-toml`.
-
-use serde::Deserialize;
-use std::fs;
-
-#[derive(Deserialize)]
-struct ExerciseInfo {
-    name: String,
-    dir: Option<String>,
-}
-
-#[derive(Deserialize)]
-struct InfoFile {
-    exercises: Vec<ExerciseInfo>,
-}
-
-#[test]
-fn dev_cargo_bins() {
-    let cargo_toml = fs::read_to_string("dev/Cargo.toml").unwrap();
-
-    let exercise_infos =
-        toml_edit::de::from_str::<InfoFile>(&fs::read_to_string("info.toml").unwrap())
-            .unwrap()
-            .exercises;
-
-    let mut start_ind = 0;
-    for exercise_info in exercise_infos {
-        let name_start = start_ind + cargo_toml[start_ind..].find('"').unwrap() + 1;
-        let name_end = name_start + cargo_toml[name_start..].find('"').unwrap();
-        assert_eq!(exercise_info.name, &cargo_toml[name_start..name_end]);
-
-        let path_start = name_end + cargo_toml[name_end + 1..].find('"').unwrap() + 2;
-        let path_end = path_start + cargo_toml[path_start..].find('"').unwrap();
-        let expected_path = if let Some(dir) = exercise_info.dir {
-            format!("../exercises/{dir}/{}.rs", exercise_info.name)
-        } else {
-            format!("../exercises/{}.rs", exercise_info.name)
-        };
-        assert_eq!(expected_path, &cargo_toml[path_start..path_end]);
-
-        start_ind = path_end + 1;
-    }
-}