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-rwxr-xr-xt/t7601-merge-pull-config.sh525
1 files changed, 525 insertions, 0 deletions
diff --git a/t/t7601-merge-pull-config.sh b/t/t7601-merge-pull-config.sh
new file mode 100755
index 0000000..bd238d8
--- /dev/null
+++ b/t/t7601-merge-pull-config.sh
@@ -0,0 +1,525 @@
+#!/bin/sh
+
+test_description='git merge
+
+Testing pull.* configuration parsing and other things.'
+
+. ./test-lib.sh
+
+test_expect_success 'setup' '
+ echo c0 >c0.c &&
+ git add c0.c &&
+ git commit -m c0 &&
+ git tag c0 &&
+ echo c1 >c1.c &&
+ git add c1.c &&
+ git commit -m c1 &&
+ git tag c1 &&
+ git reset --hard c0 &&
+ echo c2 >c2.c &&
+ git add c2.c &&
+ git commit -m c2 &&
+ git tag c2 &&
+ git reset --hard c0 &&
+ echo c3 >c3.c &&
+ git add c3.c &&
+ git commit -m c3 &&
+ git tag c3
+'
+
+test_expect_success 'pull.rebase not set, ff possible' '
+ git reset --hard c0 &&
+ git pull . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and pull.ff=true' '
+ git reset --hard c0 &&
+ test_config pull.ff true &&
+ git pull . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and pull.ff=false' '
+ git reset --hard c0 &&
+ test_config pull.ff false &&
+ git pull . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and pull.ff=only' '
+ git reset --hard c0 &&
+ test_config pull.ff only &&
+ git pull . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and --rebase given' '
+ git reset --hard c0 &&
+ git pull --rebase . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and --no-rebase given' '
+ git reset --hard c0 &&
+ git pull --no-rebase . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and --ff given' '
+ git reset --hard c0 &&
+ git pull --ff . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and --no-ff given' '
+ git reset --hard c0 &&
+ git pull --no-ff . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and --ff-only given' '
+ git reset --hard c0 &&
+ git pull --ff-only . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set (not-fast-forward)' '
+ git reset --hard c2 &&
+ test_must_fail git -c color.advice=always pull . c1 2>err &&
+ test_decode_color <err >decoded &&
+ test_i18ngrep "<YELLOW>hint: " decoded &&
+ test_i18ngrep "You have divergent branches" decoded
+'
+
+test_expect_success 'pull.rebase not set and pull.ff=true (not-fast-forward)' '
+ git reset --hard c2 &&
+ test_config pull.ff true &&
+ git pull . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and pull.ff=false (not-fast-forward)' '
+ git reset --hard c2 &&
+ test_config pull.ff false &&
+ git pull . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and pull.ff=only (not-fast-forward)' '
+ git reset --hard c2 &&
+ test_config pull.ff only &&
+ test_must_fail git pull . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and --rebase given (not-fast-forward)' '
+ git reset --hard c2 &&
+ git pull --rebase . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and --no-rebase given (not-fast-forward)' '
+ git reset --hard c2 &&
+ git pull --no-rebase . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and --ff given (not-fast-forward)' '
+ git reset --hard c2 &&
+ git pull --ff . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and --no-ff given (not-fast-forward)' '
+ git reset --hard c2 &&
+ git pull --no-ff . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_expect_success 'pull.rebase not set and --ff-only given (not-fast-forward)' '
+ git reset --hard c2 &&
+ test_must_fail git pull --ff-only . c1 2>err &&
+ test_i18ngrep ! "You have divergent branches" err
+'
+
+test_does_rebase () {
+ git reset --hard c2 &&
+ git "$@" . c1 &&
+ # Check that we actually did a rebase
+ git rev-list --count HEAD >actual &&
+ git rev-list --merges --count HEAD >>actual &&
+ test_write_lines 3 0 >expect &&
+ test_cmp expect actual &&
+ rm actual expect
+}
+
+# Prefers merge over fast-forward
+test_does_merge_when_ff_possible () {
+ git reset --hard c0 &&
+ git "$@" . c1 &&
+ # Check that we actually did a merge
+ git rev-list --count HEAD >actual &&
+ git rev-list --merges --count HEAD >>actual &&
+ test_write_lines 3 1 >expect &&
+ test_cmp expect actual &&
+ rm actual expect
+}
+
+# Prefers fast-forward over merge or rebase
+test_does_fast_forward () {
+ git reset --hard c0 &&
+ git "$@" . c1 &&
+
+ # Check that we did not get any merges
+ git rev-list --count HEAD >actual &&
+ git rev-list --merges --count HEAD >>actual &&
+ test_write_lines 2 0 >expect &&
+ test_cmp expect actual &&
+
+ # Check that we ended up at c1
+ git rev-parse HEAD >actual &&
+ git rev-parse c1^{commit} >expect &&
+ test_cmp actual expect &&
+
+ # Remove temporary files
+ rm actual expect
+}
+
+# Doesn't fail when fast-forward not possible; does a merge
+test_falls_back_to_full_merge () {
+ git reset --hard c2 &&
+ git "$@" . c1 &&
+ # Check that we actually did a merge
+ git rev-list --count HEAD >actual &&
+ git rev-list --merges --count HEAD >>actual &&
+ test_write_lines 4 1 >expect &&
+ test_cmp expect actual &&
+ rm actual expect
+}
+
+# Attempts fast forward, which is impossible, and bails
+test_attempts_fast_forward () {
+ git reset --hard c2 &&
+ test_must_fail git "$@" . c1 2>err &&
+ test_i18ngrep "Not possible to fast-forward, aborting" err
+}
+
+#
+# Group 1: Interaction of --ff-only with --[no-]rebase
+# (And related interaction of pull.ff=only with pull.rebase)
+#
+test_expect_success '--ff-only overrides --rebase' '
+ test_attempts_fast_forward pull --rebase --ff-only
+'
+
+test_expect_success '--ff-only overrides --rebase even if first' '
+ test_attempts_fast_forward pull --ff-only --rebase
+'
+
+test_expect_success '--ff-only overrides --no-rebase' '
+ test_attempts_fast_forward pull --ff-only --no-rebase
+'
+
+test_expect_success 'pull.ff=only overrides pull.rebase=true' '
+ test_attempts_fast_forward -c pull.ff=only -c pull.rebase=true pull
+'
+
+test_expect_success 'pull.ff=only overrides pull.rebase=false' '
+ test_attempts_fast_forward -c pull.ff=only -c pull.rebase=false pull
+'
+
+# Group 2: --rebase=[!false] overrides --no-ff and --ff
+# (And related interaction of pull.rebase=!false and pull.ff=!only)
+test_expect_success '--rebase overrides --no-ff' '
+ test_does_rebase pull --rebase --no-ff
+'
+
+test_expect_success '--rebase overrides --ff' '
+ test_does_rebase pull --rebase --ff
+'
+
+test_expect_success '--rebase fast-forwards when possible' '
+ test_does_fast_forward pull --rebase --ff
+'
+
+test_expect_success 'pull.rebase=true overrides pull.ff=false' '
+ test_does_rebase -c pull.rebase=true -c pull.ff=false pull
+'
+
+test_expect_success 'pull.rebase=true overrides pull.ff=true' '
+ test_does_rebase -c pull.rebase=true -c pull.ff=true pull
+'
+
+# Group 3: command line flags take precedence over config
+test_expect_success '--ff-only takes precedence over pull.rebase=true' '
+ test_attempts_fast_forward -c pull.rebase=true pull --ff-only
+'
+
+test_expect_success '--ff-only takes precedence over pull.rebase=false' '
+ test_attempts_fast_forward -c pull.rebase=false pull --ff-only
+'
+
+test_expect_success '--no-rebase takes precedence over pull.ff=only' '
+ test_falls_back_to_full_merge -c pull.ff=only pull --no-rebase
+'
+
+test_expect_success '--rebase takes precedence over pull.ff=only' '
+ test_does_rebase -c pull.ff=only pull --rebase
+'
+
+test_expect_success '--rebase overrides pull.ff=true' '
+ test_does_rebase -c pull.ff=true pull --rebase
+'
+
+test_expect_success '--rebase overrides pull.ff=false' '
+ test_does_rebase -c pull.ff=false pull --rebase
+'
+
+test_expect_success '--rebase overrides pull.ff unset' '
+ test_does_rebase pull --rebase
+'
+
+# Group 4: --no-rebase heeds pull.ff=!only or explict --ff or --no-ff
+
+test_expect_success '--no-rebase works with --no-ff' '
+ test_does_merge_when_ff_possible pull --no-rebase --no-ff
+'
+
+test_expect_success '--no-rebase works with --ff' '
+ test_does_fast_forward pull --no-rebase --ff
+'
+
+test_expect_success '--no-rebase does ff if pull.ff unset' '
+ test_does_fast_forward pull --no-rebase
+'
+
+test_expect_success '--no-rebase heeds pull.ff=true' '
+ test_does_fast_forward -c pull.ff=true pull --no-rebase
+'
+
+test_expect_success '--no-rebase heeds pull.ff=false' '
+ test_does_merge_when_ff_possible -c pull.ff=false pull --no-rebase
+'
+
+# Group 5: pull.rebase=!false in combination with --no-ff or --ff
+test_expect_success 'pull.rebase=true and --no-ff' '
+ test_does_rebase -c pull.rebase=true pull --no-ff
+'
+
+test_expect_success 'pull.rebase=true and --ff' '
+ test_does_rebase -c pull.rebase=true pull --ff
+'
+
+test_expect_success 'pull.rebase=false and --no-ff' '
+ test_does_merge_when_ff_possible -c pull.rebase=false pull --no-ff
+'
+
+test_expect_success 'pull.rebase=false and --ff, ff possible' '
+ test_does_fast_forward -c pull.rebase=false pull --ff
+'
+
+test_expect_success 'pull.rebase=false and --ff, ff not possible' '
+ test_falls_back_to_full_merge -c pull.rebase=false pull --ff
+'
+
+# End of groupings for conflicting merge vs. rebase flags/options
+
+test_expect_success 'Multiple heads warns about inability to fast forward' '
+ git reset --hard c1 &&
+ test_must_fail git pull . c2 c3 2>err &&
+ test_i18ngrep "You have divergent branches" err
+'
+
+test_expect_success 'Multiple can never be fast forwarded' '
+ git reset --hard c0 &&
+ test_must_fail git -c pull.ff=only pull . c1 c2 c3 2>err &&
+ test_i18ngrep ! "You have divergent branches" err &&
+ # In addition to calling out "cannot fast-forward", we very much
+ # want the "multiple branches" piece to be called out to users.
+ test_i18ngrep "Cannot fast-forward to multiple branches" err
+'
+
+test_expect_success 'Cannot rebase with multiple heads' '
+ git reset --hard c0 &&
+ test_must_fail git -c pull.rebase=true pull . c1 c2 c3 2>err &&
+ test_i18ngrep ! "You have divergent branches" err &&
+ test_i18ngrep "Cannot rebase onto multiple branches." err
+'
+
+test_expect_success 'merge c1 with c2' '
+ git reset --hard c1 &&
+ test -f c0.c &&
+ test -f c1.c &&
+ test ! -f c2.c &&
+ test ! -f c3.c &&
+ git merge c2 &&
+ test -f c1.c &&
+ test -f c2.c
+'
+
+test_expect_success 'fast-forward pull succeeds with "true" in pull.ff' '
+ git reset --hard c0 &&
+ test_config pull.ff true &&
+ git pull . c1 &&
+ test "$(git rev-parse HEAD)" = "$(git rev-parse c1)"
+'
+
+test_expect_success 'pull.ff=true overrides merge.ff=false' '
+ git reset --hard c0 &&
+ test_config merge.ff false &&
+ test_config pull.ff true &&
+ git pull . c1 &&
+ test "$(git rev-parse HEAD)" = "$(git rev-parse c1)"
+'
+
+test_expect_success 'fast-forward pull creates merge with "false" in pull.ff' '
+ git reset --hard c0 &&
+ test_config pull.ff false &&
+ git pull . c1 &&
+ test "$(git rev-parse HEAD^1)" = "$(git rev-parse c0)" &&
+ test "$(git rev-parse HEAD^2)" = "$(git rev-parse c1)"
+'
+
+test_expect_success 'pull prevents non-fast-forward with "only" in pull.ff' '
+ git reset --hard c1 &&
+ test_config pull.ff only &&
+ test_must_fail git pull . c3
+'
+
+test_expect_success 'already-up-to-date pull succeeds with unspecified pull.ff' '
+ git reset --hard c1 &&
+ git pull . c0 &&
+ test "$(git rev-parse HEAD)" = "$(git rev-parse c1)"
+'
+
+test_expect_success 'already-up-to-date pull succeeds with "only" in pull.ff' '
+ git reset --hard c1 &&
+ test_config pull.ff only &&
+ git pull . c0 &&
+ test "$(git rev-parse HEAD)" = "$(git rev-parse c1)"
+'
+
+test_expect_success 'already-up-to-date pull/rebase succeeds with "only" in pull.ff' '
+ git reset --hard c1 &&
+ test_config pull.ff only &&
+ git -c pull.rebase=true pull . c0 &&
+ test "$(git rev-parse HEAD)" = "$(git rev-parse c1)"
+'
+
+test_expect_success 'merge c1 with c2 (ours in pull.twohead)' '
+ git reset --hard c1 &&
+ git config pull.twohead ours &&
+ git merge c2 &&
+ test -f c1.c &&
+ ! test -f c2.c
+'
+
+test_expect_success 'merge c1 with c2 and c3 (recursive in pull.octopus)' '
+ git reset --hard c1 &&
+ git config pull.octopus "recursive" &&
+ test_must_fail git merge c2 c3 &&
+ test "$(git rev-parse c1)" = "$(git rev-parse HEAD)"
+'
+
+test_expect_success 'merge c1 with c2 and c3 (recursive and octopus in pull.octopus)' '
+ git reset --hard c1 &&
+ git config pull.octopus "recursive octopus" &&
+ git merge c2 c3 &&
+ test "$(git rev-parse c1)" != "$(git rev-parse HEAD)" &&
+ test "$(git rev-parse c1)" = "$(git rev-parse HEAD^1)" &&
+ test "$(git rev-parse c2)" = "$(git rev-parse HEAD^2)" &&
+ test "$(git rev-parse c3)" = "$(git rev-parse HEAD^3)" &&
+ git diff --exit-code &&
+ test -f c0.c &&
+ test -f c1.c &&
+ test -f c2.c &&
+ test -f c3.c
+'
+
+conflict_count()
+{
+ {
+ git diff-files --name-only
+ git ls-files --unmerged
+ } | wc -l
+}
+
+# c4 - c5
+# \ c6
+#
+# There are two conflicts here:
+#
+# 1) Because foo.c is renamed to bar.c, recursive will handle this,
+# resolve won't.
+#
+# 2) One in conflict.c and that will always fail.
+
+test_expect_success 'setup conflicted merge' '
+ git reset --hard c0 &&
+ echo A >conflict.c &&
+ git add conflict.c &&
+ echo contents >foo.c &&
+ git add foo.c &&
+ git commit -m c4 &&
+ git tag c4 &&
+ echo B >conflict.c &&
+ git add conflict.c &&
+ git mv foo.c bar.c &&
+ git commit -m c5 &&
+ git tag c5 &&
+ git reset --hard c4 &&
+ echo C >conflict.c &&
+ git add conflict.c &&
+ echo secondline >> foo.c &&
+ git add foo.c &&
+ git commit -m c6 &&
+ git tag c6
+'
+
+# First do the merge with resolve and recursive then verify that
+# recursive is chosen.
+
+test_expect_success 'merge picks up the best result' '
+ git config --unset-all pull.twohead &&
+ git reset --hard c5 &&
+ test_must_fail git merge -s resolve c6 &&
+ resolve_count=$(conflict_count) &&
+ git reset --hard c5 &&
+ test_must_fail git merge -s recursive c6 &&
+ recursive_count=$(conflict_count) &&
+ git reset --hard c5 &&
+ test_must_fail git merge -s recursive -s resolve c6 &&
+ auto_count=$(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