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common: add tests that json_scan can omit an entire object member.

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We can, but I had a typo and thought we couldn't!

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell 2023-12-13 16:05:43 +10:30
parent 8738d78c86
commit 7c26f140d8
1 changed files with 25 additions and 0 deletions
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25
common/test/run-json_scan.c
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@ -219,5 +219,30 @@ int main(int argc, char *argv[])
JSON_SCAN(json_to_number, &u32val)));
assert(u32val == 4);
/* You can have optional whole objects */
u32val = -1U;
/* Missing */
assert(!json_scan(tmpctx, buf, toks, "{5?:{deeper:%}}",
JSON_SCAN(json_to_number, &u32val)));
assert(u32val == -1U);
/* Missing */
assert(!json_scan(tmpctx, buf, toks, "{3?:{not?:%}}",
JSON_SCAN(json_to_number, &u32val)));
assert(u32val == -1U);
/* Present */
assert(!json_scan(tmpctx, buf, toks, "{3?:{three:{deeper:%}}}",
JSON_SCAN(json_to_number, &u32val)));
assert(u32val == 17);
/* Missing inside optional */
err = json_scan(tmpctx, buf, toks, "{3?:{not:%}",
JSON_SCAN(json_to_number, &u32val));
assert(streq(err, "Parsing '{3?:{not:': object does not have member not"));
buf = tal_strdup(tmpctx, "{\"1\":\"one\", \"2\":\"two\", \"3\":{\"three\": {\"deeper\": 17}}, \"arr\": [{\"1\": \"arrone\"}, 2, [3, 4]]}");
toks = json_parse_simple(tmpctx, buf, strlen(buf));
assert(toks);
assert(toks->size == 4);
common_shutdown();
}