t/lib-commit-graph.sh

   1 #!/bin/sh
   2
   3 # Helper functions for testing commit-graphs.
   4
   5 # Initialize OID cache with oid_version
   6 test_oid_cache <<-EOF
   7 oid_version sha1:1
   8 oid_version sha256:2
   9 EOF
  10
  11 graph_git_two_modes() {
  12         git -c core.commitGraph=true $1 >output &&
  13         git -c core.commitGraph=false $1 >expect &&
  14         test_cmp expect output
  15 }
  16
  17 # graph_git_behavior <name> <directory> <branch> <compare>
  18 #
  19 # Ensures that a handful of traversal operations produce the same
  20 # results with and without the commit-graph in use.
  21 #
  22 # NOTE: it is a bug to call this function with <directory> containing
  23 # any characters in $IFS.
  24 graph_git_behavior() {
  25         MSG=$1
  26         DIR=$2
  27         BRANCH=$3
  28         COMPARE=$4
  29         test_expect_success "check normal git operations: $MSG" '
  30                 graph_git_two_modes "${DIR:+-C $DIR} log --oneline $BRANCH" &&
  31                 graph_git_two_modes "${DIR:+-C $DIR} log --topo-order $BRANCH" &&
  32                 graph_git_two_modes "${DIR:+-C $DIR} log --graph $COMPARE..$BRANCH" &&
  33                 graph_git_two_modes "${DIR:+-C $DIR} branch -vv" &&
  34                 graph_git_two_modes "${DIR:+-C $DIR} merge-base -a $BRANCH $COMPARE"
  35         '
  36 }
  37
  38 graph_read_expect() {
  39         OPTIONAL=""
  40         NUM_CHUNKS=3
  41         DIR="."
  42         if test "$1" = -C
  43         then
  44                 shift
  45                 DIR="$1"
  46                 shift
  47         fi
  48         if test -n "$2"
  49         then
  50                 OPTIONAL=" $2"
  51                 NUM_CHUNKS=$((3 + $(echo "$2" | wc -w)))
  52         fi
  53         GENERATION_VERSION=2
  54         if test -n "$3"
  55         then
  56                 GENERATION_VERSION=$3
  57         fi
  58         OPTIONS=
  59         if test $GENERATION_VERSION -gt 1
  60         then
  61                 OPTIONS=" read_generation_data"
  62         fi
  63         cat >"$DIR/expect" <<-EOF
  64         header: 43475048 1 $(test_oid oid_version) $NUM_CHUNKS 0
  65         num_commits: $1
  66         chunks: oid_fanout oid_lookup commit_metadata$OPTIONAL
  67         options:$OPTIONS
  68         EOF
  69         (
  70                 cd "$DIR" &&
  71                 test-tool read-graph >output &&
  72                 test_cmp expect output
  73         )
  74 }