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As we prepare to change the behavior of the algorithms in commit-reach.c, create a new test-tool subcommand 'reach' to test these methods on interesting commit-graph shapes. To use the new test-tool, use 'test-tool reach <method>' and provide input to stdin that describes the inputs to the method. Currently, we only implement the ref_newer method, which requires two commits. Use lines "A:<committish>" and "B:<committish>" for the two inputs. We will expand this input later to accommodate methods that take lists of commits. The test t6600-test-reach.sh creates a repo whose commits form a two-dimensional grid. This grid makes it easy for us to determine reachability because commit-A-B can reach commit-X-Y if and only if A is at least X and B is at least Y. This helps create interesting test cases for each result of the methods in commit-reach.c. We test all methods in three different states of the commit-graph file: Non-existent (no generation numbers), fully computed, and mixed (some commits have generation numbers and others do not). Signed-off-by: Derrick Stolee <dstolee@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
#include "test-tool.h"
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#include "cache.h"
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#include "commit.h"
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#include "commit-reach.h"
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#include "config.h"
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#include "parse-options.h"
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#include "tag.h"
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int cmd__reach(int ac, const char **av)
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{
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struct object_id oid_A, oid_B;
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struct strbuf buf = STRBUF_INIT;
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struct repository *r = the_repository;
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setup_git_directory();
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if (ac < 2)
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exit(1);
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while (strbuf_getline(&buf, stdin) != EOF) {
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struct object_id oid;
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struct object *o;
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struct commit *c;
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if (buf.len < 3)
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continue;
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if (get_oid_committish(buf.buf + 2, &oid))
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die("failed to resolve %s", buf.buf + 2);
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o = parse_object(r, &oid);
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o = deref_tag_noverify(o);
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if (!o)
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die("failed to load commit for input %s resulting in oid %s\n",
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buf.buf, oid_to_hex(&oid));
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c = object_as_type(r, o, OBJ_COMMIT, 0);
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if (!c)
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die("failed to load commit for input %s resulting in oid %s\n",
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buf.buf, oid_to_hex(&oid));
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switch (buf.buf[0]) {
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case 'A':
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oidcpy(&oid_A, &oid);
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break;
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case 'B':
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oidcpy(&oid_B, &oid);
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break;
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default:
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die("unexpected start of line: %c", buf.buf[0]);
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}
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}
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strbuf_release(&buf);
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if (!strcmp(av[1], "ref_newer"))
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printf("%s(A,B):%d\n", av[1], ref_newer(&oid_A, &oid_B));
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exit(0);
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}
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