From a7e7d12928e93f451c2c1634fb9cd2048026ec44 Mon Sep 17 00:00:00 2001
From: Paul Campbell <pcampbell@kemitix.net>
Date: Tue, 14 May 2024 07:58:28 +0100
Subject: [PATCH] test(cli): add tests

---
 crates/cli/src/init.rs  | 39 ++++++++++++++++++++-------------------
 crates/cli/src/main.rs  |  3 +++
 crates/cli/src/tests.rs | 40 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 63 insertions(+), 19 deletions(-)
 create mode 100644 crates/cli/src/tests.rs

diff --git a/crates/cli/src/init.rs b/crates/cli/src/init.rs
index c36deb0..ca1b68f 100644
--- a/crates/cli/src/init.rs
+++ b/crates/cli/src/init.rs
@@ -1,27 +1,28 @@
-use std::path::PathBuf;
-
 use kxio::fs::FileSystem;
 
 pub fn run(fs: FileSystem) {
     let file_name = ".git-next.toml";
-    let pathbuf = PathBuf::from(file_name);
-    let Ok(exists) = fs.path_exists(&pathbuf) else {
-        eprintln!("Could not check if file exist: {}", file_name);
-        return;
-    };
-    if exists {
-        eprintln!(
-            "The configuration file already exists at {} - not overwritting it.",
-            file_name
-        );
-    } else {
-        match fs.file_write(&pathbuf, include_str!("../../../default.toml")) {
-            Ok(_) => {
-                println!("Created a default configuration file at {}", file_name);
-            }
-            Err(e) => {
-                eprintln!("Failed to write to the configuration file: {}", e)
+    let pathbuf = fs.base().join(file_name);
+    match fs.path_exists(&pathbuf) {
+        Ok(exists) => {
+            if exists {
+                eprintln!(
+                    "The configuration file already exists at {} - not overwritting it.",
+                    file_name
+                );
+            } else {
+                match fs.file_write(&pathbuf, include_str!("../../../default.toml")) {
+                    Ok(_) => {
+                        println!("Created a default configuration file at {}", file_name);
+                    }
+                    Err(e) => {
+                        eprintln!("Failed to write to the configuration file: {}", e)
+                    }
+                }
             }
         }
+        Err(err) => {
+            eprintln!("Could not check if file exist: {} - {err:?}", file_name);
+        }
     }
 }
diff --git a/crates/cli/src/main.rs b/crates/cli/src/main.rs
index b16f13b..e067bed 100644
--- a/crates/cli/src/main.rs
+++ b/crates/cli/src/main.rs
@@ -1,5 +1,8 @@
 mod init;
 
+#[cfg(test)]
+mod tests;
+
 use std::path::PathBuf;
 
 use clap::Parser;
diff --git a/crates/cli/src/tests.rs b/crates/cli/src/tests.rs
new file mode 100644
index 0000000..0980089
--- /dev/null
+++ b/crates/cli/src/tests.rs
@@ -0,0 +1,40 @@
+type TestResult = Result<(), Box<dyn std::error::Error>>;
+
+mod init {
+    use super::*;
+    #[test]
+    fn should_not_update_file_if_it_exists() -> TestResult {
+        let fs = kxio::fs::temp()?;
+        let file = fs.base().join(".git-next.toml");
+        fs.file_write(&file, "contents")?;
+
+        crate::init::run(fs.clone());
+
+        assert_eq!(
+            fs.file_read_to_string(&file)?,
+            "contents",
+            "The file has been changed"
+        );
+
+        Ok(())
+    }
+
+    #[test]
+    fn should_create_default_file_if_not_exists() -> TestResult {
+        let fs = kxio::fs::temp()?;
+
+        crate::init::run(fs.clone());
+
+        let file = fs.base().join(".git-next.toml");
+
+        assert!(fs.path_exists(&file)?, "The file has not been created");
+
+        assert_eq!(
+            fs.file_read_to_string(&file)?,
+            include_str!("../../../default.toml"),
+            "The file does not match the default template"
+        );
+
+        Ok(())
+    }
+}