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   1# Helper functions used by interactive rebase tests.
   2
   3# After setting the fake editor with this function, you can
   4#
   5# - override the commit message with $FAKE_COMMIT_MESSAGE
   6# - amend the commit message with $FAKE_COMMIT_AMEND
   7# - check that non-commit messages have a certain line count with $EXPECT_COUNT
   8# - check the commit count in the commit message header with $EXPECT_HEADER_COUNT
   9# - rewrite a rebase -i script as directed by $FAKE_LINES.
  10#   $FAKE_LINES consists of a sequence of words separated by spaces.
  11#   The following word combinations are possible:
  12#
  13#   "<lineno>" -- add a "pick" line with the SHA1 taken from the
  14#       specified line.
  15#
  16#   "<cmd> <lineno>" -- add a line with the specified command
  17#       ("squash", "fixup", "edit", "reword" or "drop") and the SHA1 taken
  18#       from the specified line.
  19#
  20#   "exec_cmd_with_args" -- add an "exec cmd with args" line.
  21#
  22#   "#" -- Add a comment line.
  23#
  24#   ">" -- Add a blank line.
  25
  26set_fake_editor () {
  27        write_script fake-editor.sh <<-\EOF
  28        case "$1" in
  29        */COMMIT_EDITMSG)
  30                test -z "$EXPECT_HEADER_COUNT" ||
  31                        test "$EXPECT_HEADER_COUNT" = "$(sed -n '1s/^# This is a combination of \(.*\) commits\./\1/p' < "$1")" ||
  32                        exit
  33                test -z "$FAKE_COMMIT_MESSAGE" || echo "$FAKE_COMMIT_MESSAGE" > "$1"
  34                test -z "$FAKE_COMMIT_AMEND" || echo "$FAKE_COMMIT_AMEND" >> "$1"
  35                exit
  36                ;;
  37        esac
  38        test -z "$EXPECT_COUNT" ||
  39                test "$EXPECT_COUNT" = $(sed -e '/^#/d' -e '/^$/d' < "$1" | wc -l) ||
  40                exit
  41        test -z "$FAKE_LINES" && exit
  42        grep -v '^#' < "$1" > "$1".tmp
  43        rm -f "$1"
  44        echo 'rebase -i script before editing:'
  45        cat "$1".tmp
  46        action=pick
  47        for line in $FAKE_LINES; do
  48                case $line in
  49                squash|fixup|edit|reword|drop)
  50                        action="$line";;
  51                exec*)
  52                        echo "$line" | sed 's/_/ /g' >> "$1";;
  53                "#")
  54                        echo '# comment' >> "$1";;
  55                ">")
  56                        echo >> "$1";;
  57                *)
  58                        sed -n "${line}s/^pick/$action/p" < "$1".tmp >> "$1"
  59                        action=pick;;
  60                esac
  61        done
  62        echo 'rebase -i script after editing:'
  63        cat "$1"
  64        EOF
  65
  66        test_set_editor "$(pwd)/fake-editor.sh"
  67}
  68
  69# After set_cat_todo_editor, rebase -i will write the todo list (ignoring
  70# blank lines and comments) to stdout, and exit failure (so you should run
  71# it with test_must_fail).  This can be used to verify the expected user
  72# experience, for todo list changes that do not affect the outcome of
  73# rebase; or as an extra check in addition to checking the outcome.
  74
  75set_cat_todo_editor () {
  76        write_script fake-editor.sh <<-\EOF
  77        grep "^[^#]" "$1"
  78        exit 1
  79        EOF
  80        test_set_editor "$(pwd)/fake-editor.sh"
  81}
  82
  83# checks that the revisions in "$2" represent a linear range with the
  84# subjects in "$1"
  85test_linear_range () {
  86        revlist_merges=$(git rev-list --merges "$2") &&
  87        test -z "$revlist_merges" &&
  88        expected=$1
  89        set -- $(git log --reverse --format=%s "$2")
  90        test "$expected" = "$*"
  91}
  92
  93reset_rebase () {
  94        test_might_fail git rebase --abort &&
  95        git reset --hard &&
  96        git clean -f
  97}
  98
  99cherry_pick () {
 100        git cherry-pick -n "$2" &&
 101        git commit -m "$1" &&
 102        git tag "$1"
 103}
 104
 105revert () {
 106        git revert -n "$2" &&
 107        git commit -m "$1" &&
 108        git tag "$1"
 109}
 110
 111make_empty () {
 112        git commit --allow-empty -m "$1" &&
 113        git tag "$1"
 114}