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Document and test cargo_toml
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@ -2,6 +2,10 @@ use anyhow::{Context, Result};
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use crate::info_file::ExerciseInfo;
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// Return the start and end index of the content of the list `bin = […]`.
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// bin = [xxxxxxxxxxxxxxxxx]
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// |start_ind |
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// |end_ind
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pub fn bins_start_end_ind(cargo_toml: &str) -> Result<(usize, usize)> {
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let start_ind = cargo_toml
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.find("bin = [")
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@ -16,6 +20,8 @@ pub fn bins_start_end_ind(cargo_toml: &str) -> Result<(usize, usize)> {
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Ok((start_ind, end_ind))
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}
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// Generate and append the content of the `bin` list in `Cargo.toml`.
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// The `exercise_path_prefix` is the prefix of the `path` field of every list entry.
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pub fn append_bins(
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buf: &mut Vec<u8>,
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exercise_infos: &[ExerciseInfo],
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@ -37,6 +43,7 @@ pub fn append_bins(
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}
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}
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// Update the `bin` list and leave everything else unchanged.
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pub fn updated_cargo_toml(
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exercise_infos: &[ExerciseInfo],
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current_cargo_toml: &str,
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@ -55,3 +62,61 @@ pub fn updated_cargo_toml(
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Ok(updated_cargo_toml)
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}
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn test_bins_start_end_ind() {
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assert_eq!(bins_start_end_ind("").ok(), None);
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assert_eq!(bins_start_end_ind("[]").ok(), None);
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assert_eq!(bins_start_end_ind("bin = [").ok(), None);
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assert_eq!(bins_start_end_ind("bin = ]").ok(), None);
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assert_eq!(bins_start_end_ind("bin = []").ok(), Some((7, 7)));
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assert_eq!(bins_start_end_ind("bin= []").ok(), None);
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assert_eq!(bins_start_end_ind("bin =[]").ok(), None);
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assert_eq!(bins_start_end_ind("bin=[]").ok(), None);
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assert_eq!(bins_start_end_ind("bin = [\nxxx\n]").ok(), Some((7, 12)));
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}
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#[test]
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fn test_bins() {
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let exercise_infos = [
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ExerciseInfo {
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name: String::from("1"),
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dir: None,
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test: true,
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strict_clippy: true,
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hint: String::new(),
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},
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ExerciseInfo {
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name: String::from("2"),
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dir: Some(String::from("d")),
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test: false,
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strict_clippy: false,
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hint: String::new(),
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},
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];
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let mut buf = Vec::with_capacity(128);
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append_bins(&mut buf, &exercise_infos, b"");
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assert_eq!(
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buf,
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br#"
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{ name = "1", path = "exercises/1.rs" },
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{ name = "2", path = "exercises/d/2.rs" },
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"#,
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);
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assert_eq!(
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updated_cargo_toml(&exercise_infos, "abc\nbin = [xxx]\n123", b"../").unwrap(),
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br#"abc
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bin = [
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{ name = "1", path = "../exercises/1.rs" },
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{ name = "2", path = "../exercises/d/2.rs" },
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]
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123"#,
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);
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}
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}
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