✅ Add tests for Unwrap method

waiterr_test.go

@@ -64,3 +64,31 @@ func TestWaitForErrorNoErr(t *testing.T) {
 	err := we.WaitForError()
 	be.Err(t, err, nil)
 }
+
+func TestUnwrap(tt *testing.T) {
+	tt.Run("two errors", func(t *testing.T) {
+		we := new(waiterr.WaitErr)
+		er1 := errors.New("error one")
+		er2 := errors.New("error two")
+
+		we.Go(func() error { return er1 })
+		we.Go(func() error { return nil })
+		we.Go(func() error { return er2 })
+		we.Go(func() error { return nil })
+
+		_ = we.Wait() // Ensure all goroutines complete
+
+		unwrapped := we.Unwrap()
+		be.Equal(t, len(unwrapped), 2)
+		be.True(t, (unwrapped[0] == er1 && unwrapped[1] == er2) || (unwrapped[0] == er2 && unwrapped[1] == er1))
+
+	})
+
+	tt.Run("no errors", func(t *testing.T) {
+		weNoErr := new(waiterr.WaitErr)
+		weNoErr.Go(func() error { return nil })
+		weNoErr.Go(func() error { return nil })
+		_ = weNoErr.Wait()
+		be.Equal(t, weNoErr.Unwrap(), nil)
+	})
+}