test/nbt_helpers: move the test that aborts to its own program

scripts/test.sh

@@ -34,6 +34,7 @@ COMPILE_COMMANDS=(
     "$CXX_WITH_FLAGS src/test/nbt_helpers.cpp -I./include -Lbin/lib -l:nbt.so -l:javacompat.so -o bin/test/nbt_helpers"
     "$CXX_WITH_FLAGS src/test/cli_argument_parser.cpp -Lbin/lib -l:cli.so -o bin/test/cli_argument_parser"
     "$CXX_WITH_FLAGS src/test/javacompat.cpp -I./include -Lbin/lib -l:javacompat.so -o bin/test/javacompat"
+    "$CXX_WITH_FLAGS src/test/nbt_writestring_failure_mode.cpp -I./include -Lbin/lib -l:nbt.so -l:javacompat.so -o bin/test/nbt_writestring_failure_mode"
 )
 for command in ${!COMPILE_COMMANDS[@]}; do
     echo "${COMPILE_COMMANDS[command]}"
@@ -45,6 +46,7 @@ wait
 
 echo "Running tests..."
 
+set +e
 for test in $(ls bin/test); do
     bin/test/$test
 done

src/test/nbt_helpers.cpp

@@ -522,8 +522,6 @@ int main(){
     NBT::helper::writeString(exportedString, normalString);
     ASSERT(javaStdString1 == *exportedString);
 
-    std::string overrunString = std::string(0xFFFFF, '.');
-    NBT::helper::writeString(exportedString, tiny_utf8::string(overrunString));
     std::cout << "Passed writeString NBT helper test." << std::endl;
     return 0;
 }

src/test/nbt_writestring_failure_mode.cpp

@@ -0,0 +1,16 @@
+#include <string>
+#include <vector>
+#include <iostream>
+#include "../lib/nbt.h++"
+#include "../lib/error.h++"
+#include "../lib/javacompat.h++"
+
+int main() {
+    std::cout << "=================================" << std::endl;
+    std::cout << "NBT write string helper failure mode test" << std::endl;
+    std::cout << "=================================" << std::endl;
+    std::cout << "This is supposed to abort." << std::endl;
+    std::vector<uint8_t>* exportedString = new std::vector<uint8_t>();
+    std::string overrunString = std::string(0xFFFFF, '.');
+    NBT::helper::writeString(exportedString, tiny_utf8::string(overrunString));
+}