diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 57dc5ed..8ec8eb8 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -1,28 +1,27 @@
 name: Rust
 
 on:
-  push:
-    branches: [ "main" ]
-  pull_request:
-    branches: [ "main" ]
+    push:
+        branches: ["main"]
+    pull_request:
+        branches: ["main"]
 
 env:
-  CARGO_TERM_COLOR: always
+    CARGO_TERM_COLOR: always
 
 jobs:
-  build:
+    build:
+        runs-on: ubuntu-latest
 
-    runs-on: ubuntu-latest
-
-    steps:
-    - uses: actions/checkout@v3
-    - name: Build
-      run: cargo build --verbose
-    - name: Run tests
-      run: cargo test --verbose
-    - name: Coverage
-      run: cargo +stable install cargo-llvm-cov --locked && cargo llvm-cov --html
-    - name: Upload coverage artifact
-      uses: actions/upload-artifact@v4.3.0
-      with:
-        path: "target/llvm-cov/html/index.html"
+        steps:
+            - uses: actions/checkout@v3
+            - name: Build
+              run: cargo build --verbose
+            - name: Run tests
+              run: cargo test --verbose
+            - name: Coverage
+              run: cargo +stable install cargo-llvm-cov --locked && cargo llvm-cov --html
+            - name: Upload coverage artifact
+              uses: actions/upload-artifact@v4.3.0
+              with:
+                  path: "target/llvm-cov/html"
diff --git a/tests/tests_print_output.rs b/tests/tests_print_output.rs
index c4f3a41..950ad8d 100644
--- a/tests/tests_print_output.rs
+++ b/tests/tests_print_output.rs
@@ -3,8 +3,17 @@ mod tests {
     use std::path::PathBuf;
 
     #[test]
-    fn test_parse_args() {
+    fn test_print_output() {
         let args = vec![
+            notox::OptionnalFields {
+                dry_run: false,
+                verbose: true,
+                json: notox::JsonFields {
+                    json: false,
+                    json_pretty: false,
+                    json_error: false,
+                },
+            },
             notox::OptionnalFields {
                 dry_run: true,
                 verbose: true,
@@ -57,4 +66,164 @@ mod tests {
             notox::print_output(options, final_res).unwrap();
         }
     }
+
+    fn setup(name1: &PathBuf, name2: &PathBuf) {
+        // create
+        let to_correct = PathBuf::from(&name1);
+        std::fs::File::create(&to_correct).unwrap();
+
+        // set read only
+        let read_only = PathBuf::from(&name2);
+        std::fs::File::create(&read_only).unwrap();
+        let mut perms = std::fs::metadata(&read_only).unwrap().permissions();
+        perms.set_readonly(true);
+        std::fs::set_permissions(&read_only, perms).unwrap();
+    }
+
+    fn cleanup(name1: &PathBuf, read_only: &PathBuf) {
+        // remove
+        std::fs::remove_file(&name1).unwrap();
+
+        // remove read only
+        let mut perms = std::fs::metadata(&read_only).unwrap().permissions();
+        perms.set_readonly(false);
+        std::fs::set_permissions(&read_only, perms).unwrap();
+        // remove
+        std::fs::remove_file(&read_only).unwrap();
+    }
+
+    #[test]
+    fn test_print_output_verbose_dry() {
+        let options = notox::OptionnalFields {
+            dry_run: true,
+            verbose: true,
+            json: notox::JsonFields {
+                json: false,
+                json_pretty: false,
+                json_error: false,
+            },
+        };
+        let to_correct = PathBuf::from("tes t verbose dry.txt");
+        let read_only = PathBuf::from("test_verbose_dry.txt");
+        setup(&to_correct, &read_only);
+
+        let paths_to_check = vec![
+            PathBuf::from("README.md"),
+            to_correct.clone(),
+            read_only.clone(),
+        ];
+        let final_res = notox::notox(&options, paths_to_check);
+        notox::print_output(&options, final_res).unwrap();
+
+        // cleanup
+        cleanup(&to_correct, &read_only);
+    }
+
+    #[test]
+    fn test_print_output_verbose_real() {
+        let options = notox::OptionnalFields {
+            dry_run: false,
+            verbose: true,
+            json: notox::JsonFields {
+                json: false,
+                json_pretty: false,
+                json_error: false,
+            },
+        };
+        let to_correct = PathBuf::from("tes t verbose.txt");
+        let read_only = PathBuf::from("test_verbose.txt");
+        setup(&to_correct, &read_only);
+
+        let paths_to_check = vec![
+            PathBuf::from("README.md"),
+            to_correct.clone(),
+            read_only.clone(),
+        ];
+        let final_res = notox::notox(&options, paths_to_check);
+        notox::print_output(&options, final_res).unwrap();
+
+        // cleanup
+        cleanup(&PathBuf::from("tes_t_verbose.txt"), &read_only);
+    }
+
+    #[test]
+    fn test_print_output_json_real() {
+        let options = notox::OptionnalFields {
+            dry_run: false,
+            verbose: false,
+            json: notox::JsonFields {
+                json: true,
+                json_pretty: false,
+                json_error: false,
+            },
+        };
+        let to_correct = PathBuf::from("tes t json.txt");
+        let read_only = PathBuf::from("test_json.txt");
+        setup(&to_correct, &read_only);
+
+        let paths_to_check = vec![
+            PathBuf::from("README.md"),
+            to_correct.clone(),
+            read_only.clone(),
+        ];
+        let final_res = notox::notox(&options, paths_to_check);
+        notox::print_output(&options, final_res).unwrap();
+
+        // cleanup
+        cleanup(&PathBuf::from("tes_t_json.txt"), &read_only);
+    }
+
+    #[test]
+    fn test_print_output_json_error_real() {
+        let options = notox::OptionnalFields {
+            dry_run: false,
+            verbose: false,
+            json: notox::JsonFields {
+                json: true,
+                json_pretty: false,
+                json_error: true,
+            },
+        };
+        let to_correct = PathBuf::from("tes t json error.txt");
+        let read_only = PathBuf::from("test_json_error.txt");
+        setup(&to_correct, &read_only);
+
+        let paths_to_check = vec![
+            PathBuf::from("README.md"),
+            to_correct.clone(),
+            read_only.clone(),
+        ];
+        let final_res = notox::notox(&options, paths_to_check);
+        notox::print_output(&options, final_res).unwrap();
+
+        // cleanup
+        cleanup(&PathBuf::from("tes_t_json_error.txt"), &read_only)
+    }
+
+    #[test]
+    fn test_print_output_json_error_dry() {
+        let options = notox::OptionnalFields {
+            dry_run: true,
+            verbose: false,
+            json: notox::JsonFields {
+                json: true,
+                json_pretty: false,
+                json_error: true,
+            },
+        };
+        let to_correct = PathBuf::from("tes t json error dry.txt");
+        let read_only = PathBuf::from("test_json_error_dry.txt");
+        setup(&to_correct, &read_only);
+
+        let paths_to_check = vec![
+            PathBuf::from("README.md"),
+            to_correct.clone(),
+            read_only.clone(),
+        ];
+        let final_res = notox::notox(&options, paths_to_check);
+        notox::print_output(&options, final_res).unwrap();
+
+        // cleanup
+        cleanup(&to_correct, &read_only)
+    }
 }