Add test for an example found during fuzzing

test/integration/fuzzing-examples.cc

@@ -0,0 +1,60 @@
+#include "test_helper.h"
+#include "base64.c"
+#include "helpers/load_language.h"
+#include "helpers/tree_helpers.h"
+#include "helpers/record_alloc.h"
+
+START_TEST
+
+vector<pair<string, string>> examples({
+  {
+    "javascript",
+    "Bi0tLS0tLS0tLS0tLS0tLS0tLS0tLS0tLXGK0i0vLS0tLS0tLS0tLS0tLS0tLS0tLS0tLXGK0i0vLS0tLS0tLS0tLS0tLS0xLS0tLTYtLfpZAA=="
+  },
+});
+
+describe("examples found via fuzzing", [&]() {
+  before_each([&]() {
+    record_alloc::start();
+  });
+
+  after_each([&]() {
+    AssertThat(record_alloc::outstanding_allocation_indices(), IsEmpty());
+  });
+
+  for (unsigned i = 0, n = examples.size(); i < n; i++) {
+
+    it(("parses example number " + to_string(i)).c_str(), [&]() {
+      TSDocument *document = ts_document_new();
+      // ts_document_print_debugging_graphs(document, true);
+
+      const string &language_name = examples[i].first;
+      ts_document_set_language(document, load_real_language(language_name));
+
+      string input;
+      const string &base64_input = examples[i].second;
+      input.resize(base64_input.size());
+      input.resize(base64_decode(
+        reinterpret_cast<const unsigned char *>(base64_input.c_str()),
+        reinterpret_cast<unsigned char *>(&input[0]),
+        base64_input.size()
+      ));
+
+      ts_document_set_input_string_with_length(
+        document,
+        input.c_str(),
+        input.size()
+      );
+
+      ts_document_parse(document);
+
+      TSNode node = ts_document_root_node(document);
+      assert_consistent_tree_sizes(node);
+
+      ts_document_free(document);
+    });
+
+  }
+});
+
+END_TEST