json_escape: add fast-path for when we don't need to escape.

[ccan] / ccan / json_escape / test / run-take.c

diff --git a/ccan/json_escape/test/run-take.c b/ccan/json_escape/test/run-take.c
new file mode 100644 (file)
index 0000000..f3b62a7
--- /dev/null
+++ b/ccan/json_escape/test/run-take.c
@@ -0,0 +1,35 @@
+#include <ccan/json_escape/json_escape.h>
+/* Include the C files directly. */
+#include <ccan/json_escape/json_escape.c>
+#include <ccan/tap/tap.h>
+
+int main(void)
+{
+       const tal_t *ctx = tal(NULL, char);
+       struct json_escape *e;
+       char *p;
+
+       /* This is how many tests you plan to run */
+       plan_tests(5);
+
+       /* This should simply be tal_steal */
+       p = tal_dup_arr(NULL, char, "Hello", 6, 0);
+       e = json_escape(ctx, take(p));
+       ok1(!strcmp(e->s, "Hello"));
+       ok1((void *)e == (void *)p);
+       ok1(tal_parent(e) == ctx);
+
+       /* This can't be tal_steal, but still should be freed. */
+       p = tal_dup_arr(NULL, char,
+                       "\\\b\f\n\r\t\""
+                       "\\\\\\b\\f\\n\\r\\t\\\"", 22, 0);
+       e = json_escape(ctx, take(p));
+       ok1(tal_parent(e) == ctx);
+       ok1(!strcmp(e->s,
+                   "\\\\\\b\\f\\n\\r\\t\\\""
+                   "\\\\\\\\\\\\b\\\\f\\\\n\\\\r\\\\t\\\\\\\""));
+       tal_free(ctx);
+
+       /* This exits depending on whether all tests passed */
+       return exit_status();
+}