test: test cargo replacement

src/app.rs

@@ -65,8 +65,8 @@ impl App {
                 println!("{:#?}", replacer);
 
                 // wait for user input
-                // let mut input = String::new();
-                // std::io::stdin().read_line(&mut input)?;
+                let mut input = String::new();
+                std::io::stdin().read_line(&mut input)?;
             }
 
             return Ok(());

src/tests/file.rs

@@ -53,6 +53,11 @@ impl FileJail {
             )));
         }
 
+        // Create the parent directory if it doesn't exist
+        if let Some(parent) = path.parent() {
+            std::fs::create_dir_all(self.directory().join(parent))?;
+        }
+
         let file = File::create(self.directory().join(path))?;
         let mut writer = BufWriter::new(file);
         writer.write_all(contents.as_bytes())?;

src/tests/mod.rs

@@ -4,8 +4,8 @@ use std::{io::Read, path::Path};
 use file::FileJail;
 
 use crate::{
-    config::{Config, FileTableData},
-    replacers::{search::SearchReplacer, Replacer},
+    config::{Config, FileTableData, CargoReplaceMode},
+    replacers::{search::SearchReplacer, Replacer, cargo::CargoReplacer, VersionReplacement},
 };
 
 #[test]
@@ -151,3 +151,127 @@ dependencies = [
         Ok(())
     });
 }
+
+#[test]
+/// Replaces a single crate workspace using the cargo replacer with auto-detection
+/// This should update both the Cargo.toml and Cargo.lock files
+fn cargo_individual() {
+    FileJail::expect_with(|jail| {
+        jail.create_file(
+            "Cargo.toml",
+            r#"
+[package]
+name = "package1"
+edition = "2018"
+version = "0.1.0"
+
+[[bin]]
+path = "src/main.rs"
+name = "package1"
+required-features = []
+
+[dependencies]
+package2 = "0.1.0"
+package3 = "0.1.0"
+"#,
+        )?;
+
+        let expected_toml = r#"[package]
+name = "package1"
+edition = "2018"
+version = "0.2.0"
+
+[dependencies]
+package2 = "0.1.0"
+package3 = "0.1.0"
+
+[[bin]]
+path = "src/main.rs"
+name = "package1"
+required-features = []
+"#;
+
+
+        jail.create_file(
+            "src/main.rs",
+            r#"fn main() {
+    println!("Hello, world!");
+}"#,
+        )?;
+
+        jail.create_file(
+            "Cargo.lock",
+            r#"# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "package1"
+version = "0.1.0"
+dependencies = [
+ "package2",
+ "package3",
+]
+
+[[package]]
+name = "package2"
+version = "0.1.0"
+
+[[package]]
+name = "package3"
+version = "0.1.0"
+"#,
+
+        )?;
+
+        let expected_lock = r#"# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "package1"
+version = "0.2.0"
+dependencies = [
+ "package2",
+ "package3",
+]
+
+[[package]]
+name = "package2"
+version = "0.1.0"
+
+[[package]]
+name = "package3"
+version = "0.1.0"
+"#;
+
+        let version_replacement = VersionReplacement {
+            old_version: "0.1.0".to_string(),
+            new_version: "0.2.0".to_string(),
+        };
+
+        let replacers = CargoReplacer::new(
+            version_replacement,
+            CargoReplaceMode::Autodetect,
+        )?.determine_replacements()?;
+
+        for replacer in replacers {
+            for replacer in replacer {
+                let file = replacer.temp_file.path();
+                let file_contents = std::fs::read_to_string(file)?;
+
+                if replacer.path.ends_with("Cargo.toml") {
+                    assert_eq!(file_contents, expected_toml);
+                } else if replacer.path.ends_with("Cargo.lock") {
+                    assert_eq!(file_contents, expected_lock);
+                } else {
+                    panic!("Unexpected file path: {}", replacer.path.display());
+                }
+            }
+        }
+
+        Ok(())
+    });
+}
+
+