1 files changed, 10 insertions, 2 deletions
diff --git a/test/test_common.cpp b/test/test_common.cpp
index 1486988..06f445a 100644
--- a/test/test_common.cpp
+++ b/test/test_common.cpp
@@ -1,7 +1,8 @@
 #include "catch.hpp"
 #include "common.h"
+#include <unordered_map>
 
-TEST_CASE("load file", "[]") {
+TEST_CASE("load file", "[common]") {
   line_view file{"\n111\n2222\n33333\n\n", 17};
   const char* lines[] = {"\n", "111\n", "2222\n", "33333\n", "\n"};
   int i = 0;
@@ -14,7 +15,7 @@ TEST_CASE("load file", "[]") {
       lines);
 }
 
-TEST_CASE("char count", "[]") {
+TEST_CASE("char count", "[common]") {
   line_view line{"accad1\n", 7};
   ascii_count ac{line};
   REQUIRE(ac['\n'] == 1);
@@ -23,3 +24,10 @@ TEST_CASE("char count", "[]") {
   REQUIRE(ac['d'] == 1);
   REQUIRE(ac['1'] == 1);
 }
+
+TEST_CASE("line_view hash", "[common]") {
+  std::unordered_map<line_view, int> h{{"abc", 1}, {"xyz", 2}};
+  REQUIRE(h["abc"] == 1);
+  REQUIRE(h["xyz"] == 2);
+  REQUIRE(h.find("ab") == h.end());
+}