Sample libgit2 test of commit header parsing

gistfile1.txt

#include "clar_libgit2.h"
#include "repository.h"
#include "signature.h"

typedef struct {
	const char *line;
	const char *header;
} parse_test_case;

static parse_test_case header_passing_tests[] = {
	{ "parent 05452d6349abcd67aa396dfb28660d765d8b2a36\n", "parent " },
	{ "tree 05452d6349abcd67aa396dfb28660d765d8b2a36\n", "tree " },
	{ "random_heading 05452d6349abcd67aa396dfb28660d765d8b2a36\n", "random_heading " },
	{ "stuck_heading05452d6349abcd67aa396dfb28660d765d8b2a36\n", "stuck_heading" },
	{ "tree 5F4BEFFC0759261D015AA63A3A85613FF2F235DE\n", "tree " },
	{ "tree 1A669B8AB81B5EB7D9DB69562D34952A38A9B504\n", "tree " },
	{ "tree 5B20DCC6110FCC75D31C6CEDEBD7F43ECA65B503\n", "tree " },
	{ "tree 173E7BF00EA5C33447E99E6C1255954A13026BE4\n", "tree " },
	{ NULL, NULL }
};

static parse_test_case header_failing_tests[] = {
	{ "parent 05452d6349abcd67aa396dfb28660d765d8b2a36", "parent " },
	{ "05452d6349abcd67aa396dfb28660d765d8b2a36\n", "tree " },
	{ "parent05452d6349abcd67aa396dfb28660d765d8b2a6a\n", "parent " },
	{ "parent 05452d6349abcd67aa396dfb280d765d8b2a6\n", "parent " },
	{ "tree  05452d6349abcd67aa396dfb28660d765d8b2a36\n", "tree " },
	{ "parent 0545xd6349abcd67aa396dfb28660d765d8b2a36\n", "parent " },
	{ "parent 0545xd6349abcd67aa396dfb28660d765d8b2a36FF\n", "parent " },
	{ "", "tree " },
	{ "", "" },
	{ NULL, NULL }
};

void test_commit_parse__header(void)
{
	git_oid oid;
	const char *line, *line_end;
	parse_test_case *scan;

	for (scan = header_passing_tests; scan->line != NULL; scan++) {
		line = scan->line;
		line_end = line + strlen(line);

		cl_git_pass(git_oid__parse(&oid, &line, line_end, scan->header));
		cl_assert(line == line_end);
	}

	for (scan = header_failing_tests; scan->line != NULL; scan++) {
		line = scan->line;
		line_end = line + strlen(line);

		cl_git_fail(git_oid__parse(&oid, &line, line_end, scan->header));
		cl_assert(line == scan->line);
	}
}