#!/bin/sh

test_description='checkout handling of ambiguous (branch/tag) refs'
. ./test-lib.sh

test_expect_success 'setup ambiguous refs' '
        test_commit branch file &&
        git branch ambiguity &&
        git branch vagueness &&
        test_commit tag file &&
        git tag ambiguity &&
        git tag vagueness HEAD:file &&
        test_commit other file
'

test_expect_success 'checkout ambiguous ref succeeds' '
        git checkout ambiguity >stdout 2>stderr
'

test_expect_success 'checkout produces ambiguity warning' '
        grep "warning.*ambiguous" stderr
'

test_expect_success 'checkout chooses branch over tag' '
        echo refs/heads/ambiguity >expect &&
        git symbolic-ref HEAD >actual &&
        test_cmp expect actual &&
        echo branch >expect &&
        test_cmp expect file
'

test_expect_success 'checkout reports switch to branch' '
        test_i18ngrep "Switched to branch" stderr &&
        test_i18ngrep ! "^HEAD is now at" stderr
'

test_expect_success 'checkout vague ref succeeds' '
        git checkout vagueness >stdout 2>stderr &&
        test_set_prereq VAGUENESS_SUCCESS
'

test_expect_success VAGUENESS_SUCCESS 'checkout produces ambiguity warning' '
        grep "warning.*ambiguous" stderr
'

test_expect_success VAGUENESS_SUCCESS 'checkout chooses branch over tag' '
        echo refs/heads/vagueness >expect &&
        git symbolic-ref HEAD >actual &&
        test_cmp expect actual &&
        echo branch >expect &&
        test_cmp expect file
'

test_expect_success VAGUENESS_SUCCESS 'checkout reports switch to branch' '
        test_i18ngrep "Switched to branch" stderr &&
        test_i18ngrep ! "^HEAD is now at" stderr
'

test_expect_success 'wildcard ambiguation, paths win' '
        git init ambi &&
        (
                cd ambi &&
                echo a >a.c &&
                git add a.c &&
                echo b >a.c &&
                git checkout "*.c" &&
                echo a >expect &&
                test_cmp expect a.c
        )
'

test_expect_success !MINGW 'wildcard ambiguation, refs lose' '
        git init ambi2 &&
        (
                cd ambi2 &&
                echo a >"*.c" &&
                git add . &&
                test_must_fail git show :"*.c" &&
                git show :"*.c" -- >actual &&
                echo a >expect &&
                test_cmp expect actual
        )
'

test_done