feat: pretify_log utilit

package/prettify-log/test/prettify.rs

@@ -0,0 +1,36 @@
+use std::fs;
+use std::process::Command;
+use std::io::Write;
+use tempfile::NamedTempFile;
+
+#[test]
+fn test_prettify() {
+    let input_file = "test/fixture/test.log";
+    let expected_output = fs::read_to_string("test/fixture/expected.log")
+        .expect("Failed to read expected.log");
+
+    let mut actual_output_file = NamedTempFile::new().expect("Failed to create temp file");
+
+    let output = Command::new("cargo")
+        .args(&["run", "--quiet"])
+        .stdin(fs::File::open(input_file).expect("Failed to open test.log"))
+        .output()
+        .expect("Failed to run prettify_logs");
+
+    assert!(output.status.success());
+
+    actual_output_file
+        .write_all(&output.stdout)
+        .expect("Failed to write output");
+
+    let actual_output = String::from_utf8_lossy(&output.stdout);
+
+    assert_eq!(actual_output.trim(), expected_output.trim(), "Output does not match expected.log");
+
+    if actual_output.trim() != expected_output.trim() {
+        eprintln!(
+            "Test failed! Actual output saved to: {}",
+            actual_output_file.path().display()
+        );
+    }
+}