test: add true/false diagnostic test for float precision and keyword boundaries

Author: tiw302

tests/test_truefalse.c

@@ -0,0 +1,35 @@
+// test_truefalse.c — diagnostic tests for float precision and keyword boundaries.
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "cjsonx.h"
+
+void dump_doc(cjsonx_doc* doc) {
+    printf("nodes count: %zu\n", doc->node_count);
+    for (size_t i = 0; i < doc->node_count; i++) {
+        cjsonx_node_t* n = &doc->nodes[i];
+        printf("node %zu: type=%d, len=%d, next_sibling=%u, val.f64=%g, val.str=%s\n",
+               i, cjsonx_node_type(n), cjsonx_node_length(n), n->next_sibling, n->val.f64,
+               (cjsonx_node_type(n) == CJSONX_STRING) ? n->val.str : "null");
+    }
+}
+
+int main() {
+    cjsonx_doc* doc1 = cjsonx_parse("{\"a\": 1}", 8);
+    cjsonx_doc* doc2 = cjsonx_parse("{\"a\": 2}", 8);
+    
+    printf("--- doc1 before merge ---\n");
+    dump_doc(doc1);
+    
+    cjsonx_val res = cjsonx_merge_patch(doc1->root, doc2->root);
+    
+    printf("--- doc1 after merge ---\n");
+    dump_doc(doc1);
+    
+    cjsonx_val res_val = cjsonx_get(res, "a");
+    printf("res_val: type=%d, val=%g\n", cjsonx_get_type(res_val), cjsonx_num(res_val));
+    
+    cjsonx_doc_free(doc1);
+    cjsonx_doc_free(doc2);
+    return 0;
+}