Update benchmark tests with filtering

src/utils/tester.rs

@@ -77,7 +77,7 @@ pub fn run_functional_tests_with_optimization(enabled: bool) -> Vec<TestResult>
     results
 }
 
-pub fn run_benchmarks(update: bool) -> Vec<BenchmarkResult> {
+pub fn run_benchmarks(update: bool, filter: Option<&str>) -> Vec<BenchmarkResult> {
     let mut results = Vec::new();
     let entries = fs::read_dir("examples").unwrap();
     let is_release = !cfg!(debug_assertions);
@@ -90,8 +90,14 @@ pub fn run_benchmarks(update: bool) -> Vec<BenchmarkResult> {
             continue;
         }
 
-        let content = fs::read_to_string(&path).unwrap();
         let name = path.file_name().unwrap().to_string_lossy().to_string();
+        if let Some(f) = filter
+            && name != f
+        {
+            continue;
+        }
+
+        let content = fs::read_to_string(&path).unwrap();
 
         let baseline_match = baseline_re.captures(&content);
         let repeat_match = repeat_re.captures(&content);
@@ -311,7 +317,7 @@ mod tests {
     #[cfg(not(debug_assertions))]
     fn benchmark_regression_test() {
         use super::*;
-        let results = run_benchmarks(false);
+        let results = run_benchmarks(false, None);
         let failures: Vec<_> = results.iter().filter(|r| r.status == "FAILED").collect();
 
         if !failures.is_empty() {