postgresql/src/test/modules/test_json_parser/README

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Module `test_json_parser`
=========================
This module contains two programs for testing the json parsers.
- `test_json_parser_incremental` is for testing the incremental parser, It
reads in a file and pases it in very small chunks (60 bytes at a time) to
the incremental parser. It's not meant to be a speed test but to test the
accuracy of the incremental parser. It takes one argument: the name of the
input file.
- `test_json_parser_perf` is for speed testing both the standard
recursive descent parser and the non-recursive incremental
parser. If given the `-i` flag it uses the non-recursive parser,
otherwise the stardard parser. The remaining flags are the number of
parsing iterations and the file containing the input. Even when
using the non-recursive parser, the input is passed to the parser in a
single chunk. The results are thus comparable to those of the
standard parser.
The easiest way to use these is to run `make check` and `make speed-check`
The sample input file is a small extract from a list of `delicious`
bookmarks taken some years ago, all wrapped in a single json
array. 10,000 iterations of parsing this file gives a reasonable
benchmark, and that is what the `speed-check` target does.