unit tests: coverage, settings

src/trim.cpp

@@ -5,10 +5,10 @@ namespace wavefront {
         auto start = source.data();
         // size is the size of buffer, data() + size() is the first available byte after the string.
         auto end = source.data() + source.size() - 1;
-        while (start < end && std::isspace(*start)) {
+        while (start <= end && std::isspace(*start)) {
             ++start;
         }
-        while (start < end && (std::isspace(*end) || *end == 0)) {
+        while (start <= end && (std::isspace(*end) || *end == 0)) {
             --end;
         }
         return std::string_view(start, end - start + 1);