#!/bin/sh setglobal test_description = ''checkout can switch to last branch and merge base'' source ./test-lib.sh test_expect_success 'setup' ' echo hello >world && git add world && git commit -m initial && git branch other && echo "hello again" >>world && git add world && git commit -m second ' test_expect_success '"checkout -" does not work initially' ' test_must_fail git checkout - ' test_expect_success 'first branch switch' ' git checkout other ' test_expect_success '"checkout -" switches back' ' git checkout - && test "z$(git symbolic-ref HEAD)" = "zrefs/heads/master" ' test_expect_success '"checkout -" switches forth' ' git checkout - && test "z$(git symbolic-ref HEAD)" = "zrefs/heads/other" ' test_expect_success 'detach HEAD' ' git checkout $(git rev-parse HEAD) ' test_expect_success '"checkout -" attaches again' ' git checkout - && test "z$(git symbolic-ref HEAD)" = "zrefs/heads/other" ' test_expect_success '"checkout -" detaches again' ' git checkout - && test "z$(git rev-parse HEAD)" = "z$(git rev-parse other)" && test_must_fail git symbolic-ref HEAD ' test_expect_success 'more switches' ' for i in 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 do git checkout -b branch$i done ' proc more_switches { for i in [16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1] { git checkout branch$i } } test_expect_success 'switch to the last' ' more_switches && git checkout @{-1} && test "z$(git symbolic-ref HEAD)" = "zrefs/heads/branch2" ' test_expect_success 'switch to second from the last' ' more_switches && git checkout @{-2} && test "z$(git symbolic-ref HEAD)" = "zrefs/heads/branch3" ' test_expect_success 'switch to third from the last' ' more_switches && git checkout @{-3} && test "z$(git symbolic-ref HEAD)" = "zrefs/heads/branch4" ' test_expect_success 'switch to fourth from the last' ' more_switches && git checkout @{-4} && test "z$(git symbolic-ref HEAD)" = "zrefs/heads/branch5" ' test_expect_success 'switch to twelfth from the last' ' more_switches && git checkout @{-12} && test "z$(git symbolic-ref HEAD)" = "zrefs/heads/branch13" ' test_expect_success 'merge base test setup' ' git checkout -b another other && echo "hello again" >>world && git add world && git commit -m third ' test_expect_success 'another...master' ' git checkout another && git checkout another...master && test "z$(git rev-parse --verify HEAD)" = "z$(git rev-parse --verify master^)" ' test_expect_success '...master' ' git checkout another && git checkout ...master && test "z$(git rev-parse --verify HEAD)" = "z$(git rev-parse --verify master^)" ' test_expect_success 'master...' ' git checkout another && git checkout master... && test "z$(git rev-parse --verify HEAD)" = "z$(git rev-parse --verify master^)" ' test_expect_success '"checkout -" works after a rebase A' ' git checkout master && git checkout other && git rebase master && git checkout - && test "z$(git symbolic-ref HEAD)" = "zrefs/heads/master" ' test_expect_success '"checkout -" works after a rebase A B' ' git branch moodle master~1 && git checkout master && git checkout other && git rebase master moodle && git checkout - && test "z$(git symbolic-ref HEAD)" = "zrefs/heads/master" ' test_expect_success '"checkout -" works after a rebase -i A' ' git checkout master && git checkout other && git rebase -i master && git checkout - && test "z$(git symbolic-ref HEAD)" = "zrefs/heads/master" ' test_expect_success '"checkout -" works after a rebase -i A B' ' git branch foodle master~1 && git checkout master && git checkout other && git rebase master foodle && git checkout - && test "z$(git symbolic-ref HEAD)" = "zrefs/heads/master" ' test_done