Use the embedded info.toml in debug mode

src/info_file.rs

@@ -1,6 +1,8 @@
 use anyhow::{bail, Context, Error, Result};
 use serde::Deserialize;
-use std::fs;
+use std::{fs, io::ErrorKind};
+
+use crate::DEBUG_PROFILE;
 
 // The mode of the exercise.
 #[derive(Deserialize, Copy, Clone)]
@@ -46,18 +48,27 @@ pub struct InfoFile {
 }
 
 impl InfoFile {
-    pub fn parse() -> Result<Self> {
+    fn from_embedded() -> Result<Self> {
-        // Read a local `info.toml` if it exists.
-        let slf: Self = match fs::read_to_string("info.toml") {
-            Ok(file_content) => toml_edit::de::from_str(&file_content)
-                .context("Failed to parse the `info.toml` file")?,
-            Err(e) => match e.kind() {
-                std::io::ErrorKind::NotFound => {
         toml_edit::de::from_str(include_str!("../info.toml"))
-                        .context("Failed to parse the embedded `info.toml` file")?
+            .context("Failed to parse the embedded `info.toml` file")
+    }
+
+    pub fn parse() -> Result<Self> {
+        if DEBUG_PROFILE {
+            return Self::from_embedded();
+        }
+
+        // Read a local `info.toml` if it exists.
+        let slf = match fs::read_to_string("info.toml") {
+            Ok(file_content) => toml_edit::de::from_str::<Self>(&file_content)
+                .context("Failed to parse the `info.toml` file")?,
+            Err(e) => {
+                if e.kind() == ErrorKind::NotFound {
+                    return Self::from_embedded();
+                }
+
+                return Err(Error::from(e).context("Failed to read the `info.toml` file"));
             }
-                _ => return Err(Error::from(e).context("Failed to read the `info.toml` file")),
-            },
         };
 
         if slf.exercises.is_empty() {