Fix CLI overrides not applying on top of resolved configuration (#926)

* Apply CLI overrides when configuration is found

* Update changelog

CHANGELOG.md

@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Fixed CLI overrides not applying on top of a resolved `stylua.toml` file ([#925](https://github.com/JohnnyMorganz/StyLua/issues/925))
+
 ## [2.0.0] - 2024-11-17
 
 ### Breaking Changes

src/cli/config.rs

@@ -113,7 +113,9 @@ impl ConfigResolver<'_> {
         match config_file {
             Some(file_path) => {
                 debug!("config: found config at {}", file_path.display());
-                read_config_file(&file_path).map(Some)
+                let config = read_and_apply_overrides(&file_path, self.opt)?;
+                debug!("config: {:#?}", config);
+                Ok(Some(config))
             }
             None => Ok(None),
         }

src/cli/main.rs

@@ -271,9 +271,6 @@ fn format(opt: opt::Opt) -> Result<i32> {
     let opt_for_config_resolver = opt.clone();
     let mut config_resolver = config::ConfigResolver::new(&opt_for_config_resolver)?;
 
-    // TODO:
-    // debug!("config: {:#?}", config);
-
     // Create range if provided
     let range = if opt.range_start.is_some() || opt.range_end.is_some() {
         Some(Range::from_values(opt.range_start, opt.range_end))
@@ -953,4 +950,74 @@ mod tests {
 
         cwd.close().unwrap();
     }
+
+    #[test]
+    fn test_uses_cli_overrides_instead_of_default_configuration() {
+        let cwd = construct_tree!({
+            "foo.lua": "local x = \"hello\"",
+        });
+
+        let mut cmd = create_stylua();
+        cmd.current_dir(cwd.path())
+            .args(["--quote-style", "AutoPreferSingle", "."])
+            .assert()
+            .success();
+
+        cwd.child("foo.lua").assert("local x = 'hello'\n");
+
+        cwd.close().unwrap();
+    }
+
+    #[test]
+    fn test_uses_cli_overrides_instead_of_default_configuration_stdin_filepath() {
+        let cwd = construct_tree!({
+            "foo.lua": "local x = \"hello\"",
+        });
+
+        let mut cmd = create_stylua();
+        cmd.current_dir(cwd.path())
+            .args(["--quote-style", "AutoPreferSingle", "-"])
+            .write_stdin("local x = \"hello\"")
+            .assert()
+            .success()
+            .stdout("local x = 'hello'\n");
+
+        cwd.close().unwrap();
+    }
+
+    #[test]
+    fn test_uses_cli_overrides_instead_of_found_configuration() {
+        let cwd = construct_tree!({
+            "stylua.toml": "quote_style = 'AutoPreferDouble'",
+            "foo.lua": "local x = \"hello\"",
+        });
+
+        let mut cmd = create_stylua();
+        cmd.current_dir(cwd.path())
+            .args(["--quote-style", "AutoPreferSingle", "."])
+            .assert()
+            .success();
+
+        cwd.child("foo.lua").assert("local x = 'hello'\n");
+
+        cwd.close().unwrap();
+    }
+
+    #[test]
+    fn test_uses_cli_overrides_instead_of_found_configuration_stdin_filepath() {
+        let cwd = construct_tree!({
+            "stylua.toml": "quote_style = 'AutoPreferDouble'",
+            "foo.lua": "local x = \"hello\"",
+        });
+
+        let mut cmd = create_stylua();
+        cmd.current_dir(cwd.path())
+            .args(["--quote-style", "AutoPreferSingle", "-"])
+            .write_stdin("local x = \"hello\"")
+            .assert()
+            .success()
+            .stdout("local x = 'hello'\n");
+
+        cwd.close().unwrap();
+    }
 }