1 files changed, 59 insertions, 0 deletions
diff --git a/third-party/utf8cpp/tests/negative.cpp b/third-party/utf8cpp/tests/negative.cpp
new file mode 100644
index 0000000..f1bcc99
--- /dev/null
+++ b/third-party/utf8cpp/tests/negative.cpp
@@ -0,0 +1,59 @@
+#include "utf8.h"
+using namespace utf8;
+
+#include <string>
+#include <iostream>
+#include <fstream>
+#include <algorithm>
+using namespace std;
+
+const unsigned INVALID_LINES[] = { 75, 76, 83, 84, 85, 93, 102, 103, 105, 106, 107, 108, 109, 110, 114, 115, 116, 117, 124, 125, 130, 135, 140, 145, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 169, 175, 176, 177, 207, 208, 209, 210, 211, 220, 221, 222, 223, 224, 232, 233, 234, 235, 236, 247, 248, 249, 250, 251, 252, 253, 257, 258, 259, 260, 261, 262, 263, 264};
+const unsigned* INVALID_LINES_END = INVALID_LINES + sizeof(INVALID_LINES)/sizeof(unsigned);
+
+int main(int argc, char** argv)
+{
+    string test_file_path;
+    if (argc == 2) 
+        test_file_path = argv[1];
+    else {
+        cout << "Wrong number of arguments" << endl;
+        return 1;
+    }
+    // Open the test file
+    ifstream fs8(test_file_path.c_str());
+    if (!fs8.is_open()) {
+        cout << "Could not open " << test_file_path << endl;
+        return 1;
+    }
+
+    // Read it line by line
+    unsigned int line_count = 0;
+    char byte;
+    while (!fs8.eof()) {
+        string line;
+        while ((byte = static_cast<char>(fs8.get())) != '\n' && !fs8.eof())
+            line.push_back(byte);
+
+        line_count++;
+        bool expected_valid = (find(INVALID_LINES, INVALID_LINES_END, line_count) == INVALID_LINES_END);
+        // Print out lines that contain unexpected invalid UTF-8
+        if (!is_valid(line.begin(), line.end())) {
+            if (expected_valid) {
+                cout << "Unexpected invalid utf-8 at line " << line_count << '\n';
+                return 1;
+            }
+
+            // try fixing it:
+            string fixed_line;
+            replace_invalid(line.begin(), line.end(), back_inserter(fixed_line));
+            if (!is_valid(fixed_line.begin(), fixed_line.end())) {
+                cout << "replace_invalid() resulted in an invalid utf-8 at line " << line_count << '\n';
+                return 1;
+            }
+        }
+        else if (!expected_valid) {
+            cout << "Invalid utf-8 NOT detected at line " << line_count << '\n';
+            return 1;
+        }
+    }
+}