ea1954af77
The already-up-to-date pull bug was fixed for --ff-only but it did not include the case where --ff or --ff-only are not specified. This updates the --ff-only fix to include the case where --ff or --ff-only are not specified in command line flags or config. Signed-off-by: Erwin Villejo <erwin.villejo@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
526 lines
14 KiB
Bash
Executable File
526 lines
14 KiB
Bash
Executable File
#!/bin/sh
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test_description='git merge
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Testing pull.* configuration parsing and other things.'
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. ./test-lib.sh
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test_expect_success 'setup' '
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echo c0 >c0.c &&
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git add c0.c &&
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git commit -m c0 &&
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git tag c0 &&
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echo c1 >c1.c &&
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git add c1.c &&
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git commit -m c1 &&
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git tag c1 &&
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git reset --hard c0 &&
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echo c2 >c2.c &&
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git add c2.c &&
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git commit -m c2 &&
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git tag c2 &&
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git reset --hard c0 &&
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echo c3 >c3.c &&
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git add c3.c &&
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git commit -m c3 &&
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git tag c3
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'
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test_expect_success 'pull.rebase not set, ff possible' '
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git reset --hard c0 &&
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git pull . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and pull.ff=true' '
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git reset --hard c0 &&
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test_config pull.ff true &&
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git pull . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and pull.ff=false' '
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git reset --hard c0 &&
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test_config pull.ff false &&
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git pull . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and pull.ff=only' '
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git reset --hard c0 &&
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test_config pull.ff only &&
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git pull . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and --rebase given' '
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git reset --hard c0 &&
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git pull --rebase . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and --no-rebase given' '
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git reset --hard c0 &&
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git pull --no-rebase . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and --ff given' '
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git reset --hard c0 &&
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git pull --ff . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and --no-ff given' '
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git reset --hard c0 &&
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git pull --no-ff . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and --ff-only given' '
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git reset --hard c0 &&
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git pull --ff-only . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set (not-fast-forward)' '
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git reset --hard c2 &&
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test_must_fail git -c color.advice=always pull . c1 2>err &&
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test_decode_color <err >decoded &&
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test_i18ngrep "<YELLOW>hint: " decoded &&
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test_i18ngrep "You have divergent branches" decoded
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'
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test_expect_success 'pull.rebase not set and pull.ff=true (not-fast-forward)' '
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git reset --hard c2 &&
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test_config pull.ff true &&
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git pull . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and pull.ff=false (not-fast-forward)' '
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git reset --hard c2 &&
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test_config pull.ff false &&
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git pull . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and pull.ff=only (not-fast-forward)' '
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git reset --hard c2 &&
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test_config pull.ff only &&
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test_must_fail git pull . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and --rebase given (not-fast-forward)' '
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git reset --hard c2 &&
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git pull --rebase . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and --no-rebase given (not-fast-forward)' '
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git reset --hard c2 &&
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git pull --no-rebase . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and --ff given (not-fast-forward)' '
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git reset --hard c2 &&
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git pull --ff . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and --no-ff given (not-fast-forward)' '
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git reset --hard c2 &&
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git pull --no-ff . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_expect_success 'pull.rebase not set and --ff-only given (not-fast-forward)' '
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git reset --hard c2 &&
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test_must_fail git pull --ff-only . c1 2>err &&
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test_i18ngrep ! "You have divergent branches" err
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'
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test_does_rebase () {
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git reset --hard c2 &&
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git "$@" . c1 &&
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# Check that we actually did a rebase
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git rev-list --count HEAD >actual &&
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git rev-list --merges --count HEAD >>actual &&
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test_write_lines 3 0 >expect &&
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test_cmp expect actual &&
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rm actual expect
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}
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# Prefers merge over fast-forward
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test_does_merge_when_ff_possible () {
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git reset --hard c0 &&
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git "$@" . c1 &&
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# Check that we actually did a merge
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git rev-list --count HEAD >actual &&
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git rev-list --merges --count HEAD >>actual &&
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test_write_lines 3 1 >expect &&
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test_cmp expect actual &&
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rm actual expect
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}
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# Prefers fast-forward over merge or rebase
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test_does_fast_forward () {
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git reset --hard c0 &&
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git "$@" . c1 &&
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# Check that we did not get any merges
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git rev-list --count HEAD >actual &&
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git rev-list --merges --count HEAD >>actual &&
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test_write_lines 2 0 >expect &&
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test_cmp expect actual &&
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# Check that we ended up at c1
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git rev-parse HEAD >actual &&
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git rev-parse c1^{commit} >expect &&
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test_cmp actual expect &&
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# Remove temporary files
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rm actual expect
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}
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# Doesn't fail when fast-forward not possible; does a merge
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test_falls_back_to_full_merge () {
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git reset --hard c2 &&
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git "$@" . c1 &&
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# Check that we actually did a merge
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git rev-list --count HEAD >actual &&
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git rev-list --merges --count HEAD >>actual &&
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test_write_lines 4 1 >expect &&
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test_cmp expect actual &&
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rm actual expect
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}
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# Attempts fast forward, which is impossible, and bails
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test_attempts_fast_forward () {
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git reset --hard c2 &&
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test_must_fail git "$@" . c1 2>err &&
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test_i18ngrep "Not possible to fast-forward, aborting" err
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}
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#
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# Group 1: Interaction of --ff-only with --[no-]rebase
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# (And related interaction of pull.ff=only with pull.rebase)
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#
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test_expect_success '--ff-only overrides --rebase' '
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test_attempts_fast_forward pull --rebase --ff-only
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'
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test_expect_success '--ff-only overrides --rebase even if first' '
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test_attempts_fast_forward pull --ff-only --rebase
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'
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test_expect_success '--ff-only overrides --no-rebase' '
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test_attempts_fast_forward pull --ff-only --no-rebase
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'
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test_expect_success 'pull.ff=only overrides pull.rebase=true' '
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test_attempts_fast_forward -c pull.ff=only -c pull.rebase=true pull
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'
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test_expect_success 'pull.ff=only overrides pull.rebase=false' '
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test_attempts_fast_forward -c pull.ff=only -c pull.rebase=false pull
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'
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# Group 2: --rebase=[!false] overrides --no-ff and --ff
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# (And related interaction of pull.rebase=!false and pull.ff=!only)
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test_expect_success '--rebase overrides --no-ff' '
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test_does_rebase pull --rebase --no-ff
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'
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test_expect_success '--rebase overrides --ff' '
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test_does_rebase pull --rebase --ff
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'
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test_expect_success '--rebase fast-forwards when possible' '
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test_does_fast_forward pull --rebase --ff
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'
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test_expect_success 'pull.rebase=true overrides pull.ff=false' '
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test_does_rebase -c pull.rebase=true -c pull.ff=false pull
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'
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test_expect_success 'pull.rebase=true overrides pull.ff=true' '
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test_does_rebase -c pull.rebase=true -c pull.ff=true pull
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'
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# Group 3: command line flags take precedence over config
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test_expect_success '--ff-only takes precedence over pull.rebase=true' '
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test_attempts_fast_forward -c pull.rebase=true pull --ff-only
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'
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test_expect_success '--ff-only takes precedence over pull.rebase=false' '
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test_attempts_fast_forward -c pull.rebase=false pull --ff-only
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'
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test_expect_success '--no-rebase takes precedence over pull.ff=only' '
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test_falls_back_to_full_merge -c pull.ff=only pull --no-rebase
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'
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test_expect_success '--rebase takes precedence over pull.ff=only' '
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test_does_rebase -c pull.ff=only pull --rebase
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'
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test_expect_success '--rebase overrides pull.ff=true' '
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test_does_rebase -c pull.ff=true pull --rebase
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'
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test_expect_success '--rebase overrides pull.ff=false' '
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test_does_rebase -c pull.ff=false pull --rebase
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'
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test_expect_success '--rebase overrides pull.ff unset' '
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test_does_rebase pull --rebase
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'
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# Group 4: --no-rebase heeds pull.ff=!only or explict --ff or --no-ff
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test_expect_success '--no-rebase works with --no-ff' '
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test_does_merge_when_ff_possible pull --no-rebase --no-ff
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'
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test_expect_success '--no-rebase works with --ff' '
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test_does_fast_forward pull --no-rebase --ff
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'
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test_expect_success '--no-rebase does ff if pull.ff unset' '
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test_does_fast_forward pull --no-rebase
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'
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test_expect_success '--no-rebase heeds pull.ff=true' '
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test_does_fast_forward -c pull.ff=true pull --no-rebase
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'
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test_expect_success '--no-rebase heeds pull.ff=false' '
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test_does_merge_when_ff_possible -c pull.ff=false pull --no-rebase
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'
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# Group 5: pull.rebase=!false in combination with --no-ff or --ff
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test_expect_success 'pull.rebase=true and --no-ff' '
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test_does_rebase -c pull.rebase=true pull --no-ff
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'
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test_expect_success 'pull.rebase=true and --ff' '
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test_does_rebase -c pull.rebase=true pull --ff
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'
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test_expect_success 'pull.rebase=false and --no-ff' '
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test_does_merge_when_ff_possible -c pull.rebase=false pull --no-ff
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'
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test_expect_success 'pull.rebase=false and --ff, ff possible' '
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test_does_fast_forward -c pull.rebase=false pull --ff
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'
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test_expect_success 'pull.rebase=false and --ff, ff not possible' '
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test_falls_back_to_full_merge -c pull.rebase=false pull --ff
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'
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# End of groupings for conflicting merge vs. rebase flags/options
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test_expect_success 'Multiple heads warns about inability to fast forward' '
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git reset --hard c1 &&
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test_must_fail git pull . c2 c3 2>err &&
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test_i18ngrep "You have divergent branches" err
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'
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test_expect_success 'Multiple can never be fast forwarded' '
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git reset --hard c0 &&
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test_must_fail git -c pull.ff=only pull . c1 c2 c3 2>err &&
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test_i18ngrep ! "You have divergent branches" err &&
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# In addition to calling out "cannot fast-forward", we very much
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# want the "multiple branches" piece to be called out to users.
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test_i18ngrep "Cannot fast-forward to multiple branches" err
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'
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test_expect_success 'Cannot rebase with multiple heads' '
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git reset --hard c0 &&
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test_must_fail git -c pull.rebase=true pull . c1 c2 c3 2>err &&
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test_i18ngrep ! "You have divergent branches" err &&
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test_i18ngrep "Cannot rebase onto multiple branches." err
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'
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test_expect_success 'merge c1 with c2' '
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git reset --hard c1 &&
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test -f c0.c &&
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test -f c1.c &&
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test ! -f c2.c &&
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test ! -f c3.c &&
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git merge c2 &&
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test -f c1.c &&
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test -f c2.c
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'
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test_expect_success 'fast-forward pull succeeds with "true" in pull.ff' '
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git reset --hard c0 &&
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test_config pull.ff true &&
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git pull . c1 &&
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test "$(git rev-parse HEAD)" = "$(git rev-parse c1)"
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'
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test_expect_success 'pull.ff=true overrides merge.ff=false' '
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git reset --hard c0 &&
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test_config merge.ff false &&
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test_config pull.ff true &&
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git pull . c1 &&
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test "$(git rev-parse HEAD)" = "$(git rev-parse c1)"
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'
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test_expect_success 'fast-forward pull creates merge with "false" in pull.ff' '
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git reset --hard c0 &&
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test_config pull.ff false &&
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git pull . c1 &&
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test "$(git rev-parse HEAD^1)" = "$(git rev-parse c0)" &&
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test "$(git rev-parse HEAD^2)" = "$(git rev-parse c1)"
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'
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test_expect_success 'pull prevents non-fast-forward with "only" in pull.ff' '
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git reset --hard c1 &&
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test_config pull.ff only &&
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test_must_fail git pull . c3
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'
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test_expect_success 'already-up-to-date pull succeeds with unspecified pull.ff' '
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git reset --hard c1 &&
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git pull . c0 &&
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test "$(git rev-parse HEAD)" = "$(git rev-parse c1)"
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'
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test_expect_success 'already-up-to-date pull succeeds with "only" in pull.ff' '
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git reset --hard c1 &&
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test_config pull.ff only &&
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git pull . c0 &&
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test "$(git rev-parse HEAD)" = "$(git rev-parse c1)"
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'
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test_expect_success 'already-up-to-date pull/rebase succeeds with "only" in pull.ff' '
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git reset --hard c1 &&
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test_config pull.ff only &&
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git -c pull.rebase=true pull . c0 &&
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test "$(git rev-parse HEAD)" = "$(git rev-parse c1)"
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'
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test_expect_success 'merge c1 with c2 (ours in pull.twohead)' '
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git reset --hard c1 &&
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git config pull.twohead ours &&
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git merge c2 &&
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test -f c1.c &&
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! test -f c2.c
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'
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test_expect_success 'merge c1 with c2 and c3 (recursive in pull.octopus)' '
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git reset --hard c1 &&
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git config pull.octopus "recursive" &&
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test_must_fail git merge c2 c3 &&
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test "$(git rev-parse c1)" = "$(git rev-parse HEAD)"
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'
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test_expect_success 'merge c1 with c2 and c3 (recursive and octopus in pull.octopus)' '
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git reset --hard c1 &&
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git config pull.octopus "recursive octopus" &&
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git merge c2 c3 &&
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test "$(git rev-parse c1)" != "$(git rev-parse HEAD)" &&
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test "$(git rev-parse c1)" = "$(git rev-parse HEAD^1)" &&
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test "$(git rev-parse c2)" = "$(git rev-parse HEAD^2)" &&
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test "$(git rev-parse c3)" = "$(git rev-parse HEAD^3)" &&
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git diff --exit-code &&
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test -f c0.c &&
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test -f c1.c &&
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test -f c2.c &&
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test -f c3.c
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'
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conflict_count()
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{
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{
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git diff-files --name-only
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git ls-files --unmerged
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} | wc -l
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}
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# c4 - c5
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# \ c6
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#
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# There are two conflicts here:
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#
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# 1) Because foo.c is renamed to bar.c, recursive will handle this,
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# resolve won't.
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#
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# 2) One in conflict.c and that will always fail.
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test_expect_success 'setup conflicted merge' '
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git reset --hard c0 &&
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echo A >conflict.c &&
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git add conflict.c &&
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echo contents >foo.c &&
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git add foo.c &&
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git commit -m c4 &&
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git tag c4 &&
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echo B >conflict.c &&
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git add conflict.c &&
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git mv foo.c bar.c &&
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git commit -m c5 &&
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git tag c5 &&
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git reset --hard c4 &&
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echo C >conflict.c &&
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git add conflict.c &&
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echo secondline >> foo.c &&
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git add foo.c &&
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git commit -m c6 &&
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git tag c6
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'
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# First do the merge with resolve and recursive then verify that
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# recursive is chosen.
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test_expect_success 'merge picks up the best result' '
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git config --unset-all pull.twohead &&
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git reset --hard c5 &&
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test_must_fail git merge -s resolve c6 &&
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resolve_count=$(conflict_count) &&
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git reset --hard c5 &&
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test_must_fail git merge -s recursive c6 &&
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|
recursive_count=$(conflict_count) &&
|
|
git reset --hard c5 &&
|
|
test_must_fail git merge -s recursive -s resolve c6 &&
|
|
auto_count=$(conflict_count) &&
|
|
test $auto_count = $recursive_count &&
|
|
test $auto_count != $resolve_count
|
|
'
|
|
|
|
test_expect_success 'merge picks up the best result (from config)' '
|
|
git config pull.twohead "recursive resolve" &&
|
|
git reset --hard c5 &&
|
|
test_must_fail git merge -s resolve c6 &&
|
|
resolve_count=$(conflict_count) &&
|
|
git reset --hard c5 &&
|
|
test_must_fail git merge -s recursive c6 &&
|
|
recursive_count=$(conflict_count) &&
|
|
git reset --hard c5 &&
|
|
test_must_fail git merge c6 &&
|
|
auto_count=$(conflict_count) &&
|
|
test $auto_count = $recursive_count &&
|
|
test $auto_count != $resolve_count
|
|
'
|
|
|
|
test_expect_success 'merge errors out on invalid strategy' '
|
|
git config pull.twohead "foobar" &&
|
|
git reset --hard c5 &&
|
|
test_must_fail git merge c6
|
|
'
|
|
|
|
test_expect_success 'merge errors out on invalid strategy' '
|
|
git config --unset-all pull.twohead &&
|
|
git reset --hard c5 &&
|
|
test_must_fail git merge -s "resolve recursive" c6
|
|
'
|
|
|
|
test_done
|