Time how long it takes to collect tests

src/startest/internal/runner/core.gleam

@@ -21,6 +21,12 @@ import startest/test_tree
 pub fn run_tests(tests: List(TestFile), ctx: Context) {
   let started_at = birl.utc_now()
 
+  let total_collect_duration =
+    tests
+    |> list.fold(duration.micro_seconds(0), fn(acc, test_file) {
+      duration.add(acc, test_file.collect_duration)
+    })
+
   let tests =
     tests
     |> list.flat_map(fn(test_file) {
@@ -87,6 +93,13 @@ pub fn run_tests(tests: List(TestFile), ctx: Context) {
     birl.utc_now()
     |> birl.difference(started_at)
 
+  logger.log(
+    ctx.logger,
+    "Collected "
+      <> int.to_string(test_count)
+      <> " tests in "
+      <> duration_to_string(total_collect_duration),
+  )
   logger.log(
     ctx.logger,
     "Ran "

src/startest/locator.gleam

@@ -1,3 +1,5 @@
+import birl
+import birl/duration.{type Duration}
 import gleam/dynamic.{type Dynamic}
 import gleam/list
 import gleam/regex
@@ -18,6 +20,8 @@ pub type TestFile {
     filepath: String,
     /// The list of tests in the file.
     tests: List(TestTree),
+    /// The time it took to collect the tests in the file.
+    collect_duration: Duration,
   )
 }
 
@@ -90,6 +94,8 @@ fn identify_tests_in_file(
   test_file: TestSourceFile,
   ctx: Context,
 ) -> Result(TestFile, Nil) {
+  let started_at = birl.utc_now()
+
   let #(standalone_tests, test_functions) =
     test_file.tests
     |> list.partition(is_standalone_test(_, ctx))
@@ -122,12 +128,18 @@ fn identify_tests_in_file(
 
   case tests {
     [] -> Error(Nil)
-    tests ->
+    tests -> {
+      let collect_duration =
+        birl.utc_now()
+        |> birl.difference(started_at)
+
       Ok(TestFile(
         module_name: test_file.module_name,
         filepath: test_file.filepath,
         tests: tests,
+        collect_duration: collect_duration,
       ))
+    }
   }
 }