Merge branch 'em/freebsd-cirrus-ci'

[git] / t / t4215-log-skewed-merges.sh

#!/bin/sh

test_description='git log --graph of skewed merges'

. ./test-lib.sh

check_graph () {
        cat >expect &&
        git log --graph --pretty=tformat:%s "$@" >actual.raw &&
        sed "s/ *$//" actual.raw >actual &&
        test_cmp expect actual
}

test_expect_success 'log --graph with merge fusing with its left and right neighbors' '
        git checkout --orphan _p &&
        test_commit A &&
        test_commit B &&
        git checkout -b _q @^ && test_commit C &&
        git checkout -b _r @^ && test_commit D &&
        git checkout _p && git merge --no-ff _q _r -m E &&
        git checkout _r && test_commit F &&
        git checkout _p && git merge --no-ff _r -m G &&
        git checkout @^^ && git merge --no-ff _p -m H &&

        check_graph <<-\EOF
        *   H
        |\
        | *   G
        | |\
        | | * F
        | * | E
        |/|\|
        | | * D
        | * | C
        | |/
        * / B
        |/
        * A
        EOF
'

test_expect_success 'log --graph with left-skewed merge' '
        git checkout --orphan 0_p && test_commit 0_A &&
        git checkout -b 0_q 0_p && test_commit 0_B &&
        git checkout -b 0_r 0_p &&
        test_commit 0_C &&
        test_commit 0_D &&
        git checkout -b 0_s 0_p && test_commit 0_E &&
        git checkout -b 0_t 0_p && git merge --no-ff 0_r^ 0_s -m 0_F &&
        git checkout 0_p && git merge --no-ff 0_s -m 0_G &&
        git checkout @^ && git merge --no-ff 0_q 0_r 0_t 0_p -m 0_H &&

        check_graph <<-\EOF
        *-----.   0_H
        |\ \ \ \
        | | | | * 0_G
        | |_|_|/|
        |/| | | |
        | | | * | 0_F
        | |_|/|\|
        |/| | | |
        | | | | * 0_E
        | |_|_|/
        |/| | |
        | | * | 0_D
        | | |/
        | | * 0_C
        | |/
        |/|
        | * 0_B
        |/
        * 0_A
        EOF
'

test_expect_success 'log --graph with nested left-skewed merge' '
        git checkout --orphan 1_p &&
        test_commit 1_A &&
        test_commit 1_B &&
        test_commit 1_C &&
        git checkout -b 1_q @^ && test_commit 1_D &&
        git checkout 1_p && git merge --no-ff 1_q -m 1_E &&
        git checkout -b 1_r @~3 && test_commit 1_F &&
        git checkout 1_p && git merge --no-ff 1_r -m 1_G &&
        git checkout @^^ && git merge --no-ff 1_p -m 1_H &&

        check_graph <<-\EOF
        *   1_H
        |\
        | *   1_G
        | |\
        | | * 1_F
        | * | 1_E
        |/| |
        | * | 1_D
        * | | 1_C
        |/ /
        * / 1_B
        |/
        * 1_A
        EOF
'

test_expect_success 'log --graph with nested left-skewed merge following normal merge' '
        git checkout --orphan 2_p &&
        test_commit 2_A &&
        test_commit 2_B &&
        test_commit 2_C &&
        git checkout -b 2_q @^^ &&
        test_commit 2_D &&
        test_commit 2_E &&
        git checkout -b 2_r @^ && test_commit 2_F &&
        git checkout 2_q &&
        git merge --no-ff 2_r -m 2_G &&
        git merge --no-ff 2_p^ -m 2_H &&
        git checkout -b 2_s @^^ && git merge --no-ff 2_q -m 2_J &&
        git checkout 2_p && git merge --no-ff 2_s -m 2_K &&

        check_graph <<-\EOF
        *   2_K
        |\
        | *   2_J
        | |\
        | | *   2_H
        | | |\
        | | * | 2_G
        | |/| |
        | | * | 2_F
        | * | | 2_E
        | |/ /
        | * | 2_D
        * | | 2_C
        | |/
        |/|
        * | 2_B
        |/
        * 2_A
        EOF
'

test_expect_success 'log --graph with nested right-skewed merge following left-skewed merge' '
        git checkout --orphan 3_p &&
        test_commit 3_A &&
        git checkout -b 3_q &&
        test_commit 3_B &&
        test_commit 3_C &&
        git checkout -b 3_r @^ &&
        test_commit 3_D &&
        git checkout 3_q && git merge --no-ff 3_r -m 3_E &&
        git checkout 3_p && git merge --no-ff 3_q -m 3_F &&
        git checkout 3_r && test_commit 3_G &&
        git checkout 3_p && git merge --no-ff 3_r -m 3_H &&
        git checkout @^^ && git merge --no-ff 3_p -m 3_J &&

        check_graph <<-\EOF
        *   3_J
        |\
        | *   3_H
        | |\
        | | * 3_G
        | * | 3_F
        |/| |
        | * | 3_E
        | |\|
        | | * 3_D
        | * | 3_C
        | |/
        | * 3_B
        |/
        * 3_A
        EOF
'

test_expect_success 'log --graph with right-skewed merge following a left-skewed one' '
        git checkout --orphan 4_p &&
        test_commit 4_A &&
        test_commit 4_B &&
        test_commit 4_C &&
        git checkout -b 4_q @^^ && test_commit 4_D &&
        git checkout -b 4_r 4_p^ && git merge --no-ff 4_q -m 4_E &&
        git checkout -b 4_s 4_p^^ &&
        git merge --no-ff 4_r -m 4_F &&
        git merge --no-ff 4_p -m 4_G &&
        git checkout @^^ && git merge --no-ff 4_s -m 4_H &&

        check_graph --date-order <<-\EOF
        *   4_H
        |\
        | *   4_G
        | |\
        | * | 4_F
        |/| |
        | * |   4_E
        | |\ \
        | | * | 4_D
        | |/ /
        |/| |
        | | * 4_C
        | |/
        | * 4_B
        |/
        * 4_A
        EOF
'

test_expect_success 'log --graph with octopus merge with column joining its penultimate parent' '
        git checkout --orphan 5_p &&
        test_commit 5_A &&
        git branch 5_q &&
        git branch 5_r &&
        test_commit 5_B &&
        git checkout 5_q && test_commit 5_C &&
        git checkout 5_r && test_commit 5_D &&
        git checkout 5_p &&
        git merge --no-ff 5_q 5_r -m 5_E &&
        git checkout 5_q && test_commit 5_F &&
        git checkout -b 5_s 5_p^ &&
        git merge --no-ff 5_p 5_q -m 5_G &&
        git checkout 5_r &&
        git merge --no-ff 5_s -m 5_H &&

        check_graph <<-\EOF
        *   5_H
        |\
        | *-.   5_G
        | |\ \
        | | | * 5_F
        | | * |   5_E
        | |/|\ \
        | |_|/ /
        |/| | /
        | | |/
        * | | 5_D
        | | * 5_C
        | |/
        |/|
        | * 5_B
        |/
        * 5_A
        EOF
'

test_done