From a8567a9fecbab5b60c4e6ef8a27af098efcb4f38 Mon Sep 17 00:00:00 2001
From: VeryAmazed <alan.h.zheng@outlook.com>
Date: Tue, 7 May 2024 23:52:15 -0400
Subject: [PATCH] added some asserts to get rid of some warning

---
 tests/density/ACTG.cpp     | 4 ++--
 tests/density/non-ACTG.cpp | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/tests/density/ACTG.cpp b/tests/density/ACTG.cpp
index 325218a..06b0263 100644
--- a/tests/density/ACTG.cpp
+++ b/tests/density/ACTG.cpp
@@ -37,7 +37,7 @@ int main() {
   std::string str;
 
   std::vector<std::string> strs;
-  freopen("../tests/density/ACTG.txt", "r", stdin);
+  assert(freopen("../tests/density/ACTG.txt", "r", stdin));
   for (int i = 0; i < 100; i++) {
     std::cin >> str;
     strs.pb(str);
@@ -87,7 +87,7 @@ int main() {
       sync_vec[i].pb(am);
     }
   }
-  freopen("../tests/density/out1.txt", "w", stdout);
+  assert(freopen("../tests/density/out1.txt", "w", stdout));
   for (int i = 0; i < 4; i++) {
     for (size_t j = 0; j < 100; j++) {
       std::cout << mod_min_vec[i][j] << " ";
diff --git a/tests/density/non-ACTG.cpp b/tests/density/non-ACTG.cpp
index f35e9b1..6cc0dcf 100644
--- a/tests/density/non-ACTG.cpp
+++ b/tests/density/non-ACTG.cpp
@@ -60,7 +60,7 @@ int main() {
   std::string str;
 
   std::vector<std::string> strs;
-  freopen("../tests/density/non-ACTG.txt", "r", stdin);
+  assert(freopen("../tests/density/non-ACTG.txt", "r", stdin));
   for (int i = 0; i < 100; i++) {
     std::cin >> str;
     strs.pb(str);
@@ -132,7 +132,7 @@ int main() {
       sync_vec[i].pb(am);
     }
   }
-  freopen("../tests/density/out2.txt", "w", stdout);
+  assert(freopen("../tests/density/out2.txt", "w", stdout));
   for (int i = 0; i < 4; i++) {
     for (size_t j = 0; j < 100; j++) {
       std::cout << mod_min_vec[i][j] << " ";